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2022年 (12篇)</h2><div class="caret" role="button" aria-label="toggle section" tabindex="0" data-v-95d837d1><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="caret-icon" data-v-95d837d1><path d="M9,19c-0.3,0-0.5-0.1-0.7-0.3c-0.4-0.4-0.4-1,0-1.4l5.3-5.3L8.3,6.7c-0.4-0.4-0.4-1,0-1.4s1-0.4,1.4,0l6,6c0.4,0.4,0.4,1,0,1.4l-6,6C9.5,18.9,9.3,19,9,19z"></path></svg></div></div><div class="items" data-v-95d837d1><!--[--><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/11/23/%E8%A7%A3%E5%86%B3Maven%E4%BC%A0%E9%80%92%E4%BE%9D%E8%B5%96%E6%B1%A1%E6%9F%93%E7%9A%84%E9%97%AE%E9%A2%98" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-red mr-[6px]" style="font-weight: 550; display: inline-block;">1</div>解决 Maven 传递依赖污染的问题</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/11/06/%E8%A7%A3%E5%86%B3DotNET%E5%AE%89%E8%A3%85%E5%90%8E%E6%8A%A5%E9%94%99%E7%9A%84%E9%97%AE%E9%A2%98" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-orange mr-[6px]" style="font-weight: 550; display: inline-block;">2</div>解决 DotNet 安装完，报错：Couldn't find a valid ICU package installed on the system. Please install libicu using your package manager and try again</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/11/04/%E8%A7%A3%E5%86%B3Docker%E5%AE%89%E8%A3%85Prometheus%E5%90%AF%E5%8A%A8%E6%8A%A5%E9%94%99%E7%9A%84%E9%97%AE%E9%A2%98" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-yellow mr-[6px]" style="font-weight: 550; display: inline-block;">3</div>解决 Docker 安装 Prometheus 启动报 permission denied 的问题</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/10/29/Docker%E8%AE%BE%E7%BD%AE%E7%BD%91%E7%BB%9C%E4%BB%A3%E7%90%86" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; display: inline-block;">4</div>Docker 设置网络代理</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/10/25/%E8%A7%A3%E5%86%B3CentOS8%E6%89%A7%E8%A1%8Cyum%E5%AE%89%E8%A3%85%E6%8A%A5%E9%94%99" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; display: inline-block;">5</div>解决 CentOS 8 执行 yum install 报 Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist 的问题</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/10/15/%E8%A7%A3%E5%86%B3Windows%E6%A1%8C%E9%9D%A2%E9%83%A8%E5%88%86%E5%BF%AB%E6%8D%B7%E6%96%B9%E5%BC%8F%E5%9B%BE%E6%A0%87%E5%8F%98%E4%B8%BA%E7%A9%BA%E7%99%BD%E7%9A%84%E9%97%AE%E9%A2%98" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; 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display: inline-block;">8</div>Nginx转发请求，报13：Permission denied错误</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/08/31/SpringBoot%E9%A1%B9%E7%9B%AE%E5%BC%95%E5%85%A5OpenFeign%E5%90%8E%E6%97%A0%E6%B3%95%E5%90%AF%E5%8A%A8" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; display: inline-block;">9</div>SpringBoot项目引入OpenFeign后无法启动</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/08/11/%E6%89%A7%E8%A1%8CShell%E8%84%9A%E6%9C%AC%EF%BC%8C%E6%8A%A5java%20command%20not%20found" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; display: inline-block;">10</div>执行Shell脚本，报java: command not found</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/03/24/%E5%88%9B%E5%BB%BA%E4%B8%80%E4%B8%AA%E8%87%AA%E8%BA%AB%E7%B1%BB%E7%9A%84%E9%9D%99%E6%80%81%E5%AF%B9%E8%B1%A1%E5%8F%98%E9%87%8F%EF%BC%8C%E7%A9%B6%E7%AB%9F%E4%BC%9A%E5%A6%82%E4%BD%95%E6%89%A7%E8%A1%8C%EF%BC%9F" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; display: inline-block;">11</div>创建一个自身类的静态对象变量，究竟会如何执行？</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2022/01/26/JavaScript%20%E6%97%A0%E6%B3%95%E5%AD%98%E5%82%A8%20Java%20%20Long%20%E7%B1%BB%E5%9E%8B%E6%95%B0%E6%8D%AE%E9%97%AE%E9%A2%98" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; display: inline-block;">12</div>JavaScript 无法存储 Java Long 类型数据问题</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><div class="group" data-v-802ad7d8><section class="VPSidebarItem level-0 collapsible collapsed" data-v-802ad7d8 data-v-95d837d1><div class="item" role="button" tabindex="0" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><h2 class="text" data-v-95d837d1><img class="chinese-zodiac" style="position: static; vertical-align: middle; padding-bottom: 3px;" src="/img/svg/chinese-zodiac/ox.svg" title="牛年" alt="生肖">
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2021年 (5篇)</h2><div class="caret" role="button" aria-label="toggle section" tabindex="0" data-v-95d837d1><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="caret-icon" data-v-95d837d1><path d="M9,19c-0.3,0-0.5-0.1-0.7-0.3c-0.4-0.4-0.4-1,0-1.4l5.3-5.3L8.3,6.7c-0.4-0.4-0.4-1,0-1.4s1-0.4,1.4,0l6,6c0.4,0.4,0.4,1,0,1.4l-6,6C9.5,18.9,9.3,19,9,19z"></path></svg></div></div><div class="items" data-v-95d837d1><!--[--><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2021/12/13/%E6%97%A0%E6%B3%95%E8%AE%BF%E9%97%AEF%E7%9B%98%E3%80%82%E6%96%87%E4%BB%B6%E6%88%96%E7%9B%AE%E5%BD%95%E6%8D%9F%E5%9D%8F%E4%B8%94%E6%97%A0%E6%B3%95%E8%AF%BB%E5%8F%96" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-red mr-[6px]" style="font-weight: 550; display: inline-block;">1</div>无法访问 F:\。文件或目录损坏且无法读取。</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2021/12/11/SQL%20%E6%B3%A8%E5%85%A5%E6%94%BB%E5%87%BB%E9%A3%8E%E9%99%A9" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-orange mr-[6px]" style="font-weight: 550; display: inline-block;">2</div>SQL 注入攻击风险</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2021/12/10/Command%20line%20is%20too%20long.%20Shorten%20command%20line%20for%20XXX%20or%20also%20for%20Spring%20Boot%20default%20configuration" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-yellow mr-[6px]" style="font-weight: 550; display: inline-block;">3</div>Command line is too long. Shorten command line for XXX or also for Spring Boot default configuration？</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2021/12/08/for%E5%BE%AA%E7%8E%AF%E4%B8%AD%E5%88%A0%E9%99%A4%E9%9B%86%E5%90%88%E5%85%83%E7%B4%A0%E9%9A%90%E8%97%8F%E7%9A%84%E9%99%B7%E9%98%B1" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; display: inline-block;">4</div>for循环中删除集合元素隐藏的陷阱</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/issues/2021/12/01/F%E7%9B%98%E4%B8%8A%E7%9A%84%E5%9B%9E%E6%94%B6%E7%AB%99%E5%B7%B2%E6%8D%9F%E5%9D%8F%E3%80%82%E6%98%AF%E5%90%A6%E6%B8%85%E7%A9%BA%E8%AF%A5%E9%A9%B1%E5%8A%A8%E5%99%A8%E4%B8%8A%E7%9A%84%E5%9B%9E%E6%94%B6%E7%AB%99" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-gray mr-[6px]" style="font-weight: 550; display: inline-block;">5</div>F:\ 上的回收站已损坏。是否清空该驱动器上的"回收站"?</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><!--]--><!--[--><!--]--></nav></aside><div class="VPContent has-sidebar" id="VPContent" data-v-03322d68 data-v-2c336b25><div class="VPDoc has-sidebar has-aside" data-v-2c336b25 data-v-53ed897c><!--[--><!--]--><div class="container" data-v-53ed897c><div class="aside" data-v-53ed897c><div class="aside-curtain" data-v-53ed897c></div><div class="aside-container" data-v-53ed897c><div class="aside-content" data-v-53ed897c><div class="VPDocAside" data-v-53ed897c data-v-3d450548><!--[--><!--]--><!--[--><!--]--><div class="VPDocAsideOutline" role="navigation" data-v-3d450548 data-v-70b38f01><div class="content" data-v-70b38f01><div class="outline-marker" data-v-70b38f01></div><div class="outline-title" role="heading" aria-level="2" data-v-70b38f01>目录</div><nav aria-labelledby="doc-outline-aria-label" data-v-70b38f01><span class="visually-hidden" id="doc-outline-aria-label" data-v-70b38f01> Table of Contents for current page </span><ul class="root" data-v-70b38f01 data-v-e10534d6><!--[--><!--]--></ul></nav></div></div><!--[--><!--]--><div class="spacer" data-v-3d450548></div><!--[--><!--]--><!----><!--[--><!--]--><!--[--><!--]--></div></div></div></div><div class="content" data-v-53ed897c><div class="content-container" data-v-53ed897c><!--[--><!--]--><!----><main class="main" data-v-53ed897c><div style="position:relative;" class="vp-doc _categories_issues_2022_09_23_%E8%A7%A3%E5%86%B3%E6%97%A0%E6%B3%95%E9%87%8D%E5%A4%8D%E8%AF%BB%E5%8F%96%E8%AF%B7%E6%B1%82%E4%BD%93%E5%92%8C%E5%93%8D%E5%BA%94%E4%BD%93%E7%9A%84%E9%97%AE%E9%A2%98" data-v-53ed897c><div><h1 id="解决无法重复读取请求体和响应体的问题" tabindex="-1">解决无法重复读取请求体和响应体的问题 <a class="header-anchor" href="#解决无法重复读取请求体和响应体的问题" aria-label="Permalink to "解决无法重复读取请求体和响应体的问题""></a></h1><!----><h2 id="项目场景" tabindex="-1">项目场景 <a class="header-anchor" href="#项目场景" aria-label="Permalink to "项目场景""></a></h2><p><strong>C：</strong> 这两天实现了一个操作日志功能，需求是要记录指定操作的请求 URL，请求方式、请求头、请求体、响应码、响应头、响应体、请求耗时、操作人、操作IP、操作地址等信息。</p><p>考虑了几种方案，结合以前的经验，排掉了 AOP，综合评估后这次采用的是 Spring 拦截器的方式来记录，大体的实现流程是：</p><ol><li>提供一个 <code>@Log</code> 注解</li><li>在需要记录操作日志的接口类及方法上添加 <code>@Log</code> 注解，指定好资源名称和操作类型（具体为什么要在类和方法上都加，是考虑复用操作的资源名称）</li><li>提供一个拦截器，在拦截器中判断当前 Handler 是否存在 <code>@Log</code> 注解</li><li>存在该注解，就在 <code>preHandle()</code> 中开始计时，在 <code>afterCompletion()</code> 中结束计时并获取请求和响应信息</li><li>将请求和响应信息异步存储到数据库中</li></ol><h2 id="问题描述" tabindex="-1">问题描述 <a class="header-anchor" href="#问题描述" aria-label="Permalink to "问题描述""></a></h2><p>流程很简单，但是在获取 requestBody（请求体）和 responseBody（响应体）时出了些问题。如果我在 <code>preHandle()</code> 中获取了请求体信息，那么对应 Handler 就无法获取了，反之如果我是在 <code>afterCompletion</code> 中获取请求体信息，那么就获取不到了。而对于响应体，在我获取完之后，向前端响应就没内容了。</p><h2 id="原因分析" tabindex="-1">原因分析 <a class="header-anchor" href="#原因分析" aria-label="Permalink to "原因分析""></a></h2><p>之所以如此，是由于请求体和响应体分别对应的是 InputStream 和 OutputStream，由于流的特性，使用完之后就无法再被使用了。</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">/**</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * Retrieves the body of the request as binary data using a {@link ServletInputStream}. Either this method or</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * {@link #getReader} may be called to read the body, not both.</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@return</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> a {@link ServletInputStream} object containing the body of the request</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@exception</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> IllegalStateException</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> if the {@link #getReader} method has already been called for this request</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@exception</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> IOException</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> if an input or output exception occurred</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> */</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> ServletInputStream </span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getInputStream</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">() throws IOException;</span></span></code></pre></div><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">/**</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * Returns a {@link ServletOutputStream} suitable for writing binary data in the response. The servlet container</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * does not encode the binary data.</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * <p></span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * Calling flush() on the ServletOutputStream commits the response.</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * Either this method or {@link #getWriter} may be called to write the body, not both, except when {@link #reset}</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * has been called.</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@return</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> a {@link ServletOutputStream} for writing binary data</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@exception</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> IllegalStateException</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> if the <code>getWriter</code> method has been called on this response</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@exception</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> IOException</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> if an input or output exception occurred</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@see</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> #getWriter</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@see</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> #reset</span></span>
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<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> */</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> ServletOutputStream </span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getOutputStream</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">() throws IOException;</span></span></code></pre></div><p>想要解决的话就要想办法把这信息使用完再“塞回去”，直接“塞回去”是不可能的。</p><h2 id="解决方案" tabindex="-1">解决方案 <a class="header-anchor" href="#解决方案" aria-label="Permalink to "解决方案""></a></h2><p>为了解决这个问题，Servlet 提供了两个类 HttpServletRequestWrapper、HttpServletResponseWrapper，我们可以继承它们来实现请求体和响应体内容的缓存，达到重复读取请求体和响应体的目的。</p><p>不过既然我们在使用 Spring 框架，贴心的 Spring 也提供了两个实现类：ContentCachingRequestWrapper、ContentCachingResponseWrapper，这样我们就无需再自行定义相应 Wrapper 直接使用它们就可以解决这个问题了。</p><p>下面是在过滤器中对请求对象和响应对象进行包装处理的代码段：</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> org.springframework.core.Ordered;</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> org.springframework.stereotype.Component;</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> org.springframework.web.filter.OncePerRequestFilter;</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> org.springframework.web.util.ContentCachingRequestWrapper;</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> org.springframework.web.util.ContentCachingResponseWrapper;</span></span>
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<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> org.springframework.web.util.WebUtils;</span></span>
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<span class="line"></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> javax.servlet.FilterChain;</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> javax.servlet.ServletException;</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> javax.servlet.http.HttpServletRequest;</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> javax.servlet.http.HttpServletResponse;</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> java.io.IOException;</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> java.util.Objects;</span></span>
|
||
<span class="line"></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">/**</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * 缓存请求体和响应体过滤器</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * <p></span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * 由于 requestBody 和 responseBody 分别对应的是 InputStream 和 OutputStream，由于流的特性，读取完之后就无法再被使用了。</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * 所以，需要额外缓存一次流信息。</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </p></span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@author</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> Charles7c</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@since</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> 2022/9/22 16:33</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> */</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Component</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> ContentCachingWrapperFilter</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#6CB6FF;"> OncePerRequestFilter</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> implements</span><span style="--shiki-light:#6F42C1;--shiki-dark:#6CB6FF;"> Ordered</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> {</span></span>
|
||
<span class="line"></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Override</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> int</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> getOrder</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">() {</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> return</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> Ordered.LOWEST_PRECEDENCE </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">-</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;"> 10</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">;</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> }</span></span>
|
||
<span class="line"></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Override</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> void</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> doFilterInternal</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(HttpServletRequest </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">request</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, HttpServletResponse </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">response</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, FilterChain </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">filterChain</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> throws</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> ServletException, IOException {</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> // 包装流，可重复读取</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> (</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">!</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(request </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">instanceof</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> ContentCachingRequestWrapper)) {</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> request </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">=</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> new</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> ContentCachingRequestWrapper</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(request);</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> }</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> (</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">!</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(response </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">instanceof</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> ContentCachingResponseWrapper)) {</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> response </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">=</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> new</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> ContentCachingResponseWrapper</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(response);</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> }</span></span>
|
||
<span class="line"></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> filterChain.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">doFilter</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(request, response);</span></span>
|
||
<span class="line"><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> updateResponse</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(response);</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> }</span></span>
|
||
<span class="line"></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> /**</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * 更新响应（不操作这一步，会导致接口响应空白）</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@param</span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;"> response</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> 响应对象</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@throws</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> IOException</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> /</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> */</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> private</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> void</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> updateResponse</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(HttpServletResponse </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">response</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">throws</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> IOException {</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> ContentCachingResponseWrapper</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> responseWrapper</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> WebUtils.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getNativeResponse</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(response, ContentCachingResponseWrapper.class);</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> Objects.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">requireNonNull</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(responseWrapper).</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">copyBodyToResponse</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> }</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><p>下面是使用缓存对象来获取请求体或响应体的代码段，在你需要的地方使用就可以了：</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">import</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> org.apache.commons.io.IOUtils;</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">// --------------------------------------------</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">/**</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * 获取请求体</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@param</span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;"> request</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> 请求对象</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@return</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> 请求体</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> */</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">private</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> String </span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getRequestBody</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(HttpServletRequest request) {</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> String</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> requestBody</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;"> ""</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">;</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> ContentCachingRequestWrapper</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> wrapper</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> WebUtils.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getNativeRequest</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(request, ContentCachingRequestWrapper.class);</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> (wrapper </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">!=</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;"> null</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">) {</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> requestBody </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> IOUtils.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">toString</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(wrapper.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getContentAsByteArray</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(), StandardCharsets.UTF_8.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">toString</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">());</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> }</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> return</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> requestBody;</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span>
|
||
<span class="line"></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">/**</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * 获取响应体</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> *</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@param</span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;"> response</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> 响应对象</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> * </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">@return</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> 响应体</span></span>
|
||
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> */</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">private</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> String </span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getResponseBody</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(HttpServletResponse response) {</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> String</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> responseBody</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;"> ""</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">;</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> ContentCachingResponseWrapper</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> wrapper</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> WebUtils.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getNativeResponse</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(response, ContentCachingResponseWrapper.class);</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> if</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> (wrapper </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">!=</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;"> null</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">) {</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> responseBody </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">=</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> IOUtils.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">toString</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(wrapper.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getContentAsByteArray</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(), StandardCharsets.UTF_8.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">toString</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">());</span></span>
|
||
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> }</span></span>
|
||
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> return</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> responseBody;</span></span>
|
||
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Please install libicu using your package manager and try again\",\"link\":\"/categories/issues/2022/11/06/解决DotNET安装后报错的问题\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>解决 Docker 安装 Prometheus 启动报 permission denied 的问题\",\"link\":\"/categories/issues/2022/11/04/解决Docker安装Prometheus启动报错的问题\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>Docker 设置网络代理\",\"link\":\"/categories/issues/2022/10/29/Docker设置网络代理\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>解决 CentOS 8 执行 yum install 报 Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist 的问题\",\"link\":\"/categories/issues/2022/10/25/解决CentOS8执行yum安装报错\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">6</div>解决 Windows 桌面部分快捷方式图标变为空白的问题\",\"link\":\"/categories/issues/2022/10/15/解决Windows桌面部分快捷方式图标变为空白的问题\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">7</div>解决无法重复读取请求体和响应体的问题\",\"link\":\"/categories/issues/2022/09/23/解决无法重复读取请求体和响应体的问题\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">8</div>Nginx转发请求，报13：Permission denied错误\",\"link\":\"/categories/issues/2022/09/05/Nginx转发请求，报13：Permission denied错误\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">9</div>SpringBoot项目引入OpenFeign后无法启动\",\"link\":\"/categories/issues/2022/08/31/SpringBoot项目引入OpenFeign后无法启动\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">10</div>执行Shell脚本，报java: command not found\",\"link\":\"/categories/issues/2022/08/11/执行Shell脚本，报java command not found\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">11</div>创建一个自身类的静态对象变量，究竟会如何执行？\",\"link\":\"/categories/issues/2022/03/24/创建一个自身类的静态对象变量，究竟会如何执行？\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">12</div>JavaScript 无法存储 Java Long 类型数据问题\",\"link\":\"/categories/issues/2022/01/26/JavaScript 无法存储 Java Long 类型数据问题\"}],\"collapsed\":false},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/ox.svg\\\" title=\\\"牛年\\\" alt=\\\"生肖\\\">\\n 2021年 (5篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>无法访问 F:\\\\。文件或目录损坏且无法读取。\",\"link\":\"/categories/issues/2021/12/13/无法访问F盘。文件或目录损坏且无法读取\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>SQL 注入攻击风险\",\"link\":\"/categories/issues/2021/12/11/SQL 注入攻击风险\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>Command line is too long. Shorten command line for XXX or also for Spring Boot default configuration？\",\"link\":\"/categories/issues/2021/12/10/Command line is too long. Shorten command line for XXX or also for Spring Boot default configuration\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>for循环中删除集合元素隐藏的陷阱\",\"link\":\"/categories/issues/2021/12/08/for循环中删除集合元素隐藏的陷阱\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>F:\\\\ 上的回收站已损坏。是否清空该驱动器上的\\\"回收站\\\"?\",\"link\":\"/categories/issues/2021/12/01/F盘上的回收站已损坏。是否清空该驱动器上的回收站\"}],\"collapsed\":true}],\"/categories/fragments/\":[{\"text\":\"<svg style=\\\"display: inline-block; vertical-align: middle; padding-bottom: 3px;\\\" viewBox=\\\"0 0 1920 1024\\\" version=\\\"1.1\\\" xmlns=\\\"http://www.w3.org/2000/svg\\\" width=\\\"30\\\" height=\\\"30\\\"><path d=\\\"M367.488 667.904h423.744v47.232H367.488v-47.232zM320.256 204.352h137.28v68.992h-137.28v-68.992zM367.488 754.112h423.744v48H367.488v-48zM693.76 204.352h137.984v68.992H693.76v-68.992zM507.008 204.352h137.28v68.992h-137.28v-68.992z\\\" p-id=\\\"10749\\\" fill=\\\"#d81e06\\\"></path><path d=\\\"M1792.512 0H127.488C57.472 0 0 57.152 0 127.616v768.768C0 966.72 57.088 1024 127.488 1024h1665.088c69.952 0 127.424-57.152 127.424-127.616V127.616C1920 57.216 1862.912 0 1792.512 0z m-528 175.104h446.976v54.016H1494.72l-24 101.248h206.976V689.6h-57.728V384.32h-289.472v308.224h-57.728v-362.24h140.224l20.992-101.248h-169.472v-53.952z m-996.032-11.2h614.272v167.232h-51.008v-17.28H320.256v17.28H268.48V163.904z m678.784 681.728h-744v-43.52h111.744V454.848h229.504v-48.704H221.248v-42.048h323.264v-39.744h54.016v39.744h331.52v41.984h-331.52v48.768h245.248v347.264h103.488v43.52z m203.264-94.528c0 59.52-30.72 89.28-92.224 89.28-25.472 0-46.016-0.512-61.504-1.472-2.496-22.976-6.528-45.248-12.032-66.752 22.976 5.504 46.72 8.256 71.232 8.256 24 0 35.968-11.52 35.968-34.496V247.872H971.2v-54.72h278.976v54.72H1150.4v503.232z m521.216 121.536c-67.008-55.488-137.28-108.032-210.752-157.504-4.992 9.984-10.496 19.008-16.512 27.008-41.472 57.024-113.28 101.504-215.232 133.504-9.472-16.512-21.504-34.496-35.968-54.016 94.528-27.008 161.28-64.512 200.256-112.512 34.496-44.992 51.776-113.024 51.776-204.032V421.12h57.728v82.496c0 62.528-6.72 115.776-20.224 159.744 84.48 54.016 161.472 107.008 230.976 158.976l-42.048 50.304z\\\" p-id=\\\"10750\\\" fill=\\\"#d81e06\\\"></path><path d=\\\"M367.488 495.36h423.744v47.232H367.488V495.36zM367.488 581.632h423.744v47.232H367.488v-47.232z\\\" p-id=\\\"10751\\\" fill=\\\"#d81e06\\\"></path></svg>\\n 我的置顶 (8篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>个人常用快捷键\",\"link\":\"/categories/fragments/2022/10/06/个人常用快捷键\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>个人常用 Git 命令\",\"link\":\"/categories/fragments/2022/10/05/个人常用Git命令\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>个人常用 Docker 命令\",\"link\":\"/categories/fragments/2022/10/01/个人常用Docker命令\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>个人常用 SQL 函数\",\"link\":\"/categories/fragments/2022/02/16/个人常用SQL函数\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>个人常用 Linux 命令\",\"link\":\"/categories/fragments/2019/12/31/个人常用Linux命令\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">6</div>个人常用 Hutool 工具类\",\"link\":\"/categories/fragments/2019/12/30/个人常用Hutool工具类\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">7</div>个人常用 Stream 使用技巧\",\"link\":\"/categories/fragments/2019/12/29/个人常用Stream使用技巧\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">8</div>个人 SQL 优化技巧\",\"link\":\"/categories/fragments/2019/12/28/个人SQL优化技巧\"}],\"collapsed\":false},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/rabbit.svg\\\" title=\\\"兔年\\\" alt=\\\"生肖\\\">\\n 2023年 (2篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>一文详解限流接口实现\",\"link\":\"/categories/fragments/2023/12/21/一文详解限流接口实现\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>阿里巴巴的Code Review方法论与实践总结\",\"link\":\"/categories/fragments/2023/01/06/CodeReview方法论与实践总结\"}],\"collapsed\":false},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/tiger.svg\\\" title=\\\"虎年\\\" alt=\\\"生肖\\\">\\n 2022年 (15篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>简单聊聊如何让网站开启灰色显示\",\"link\":\"/categories/fragments/2022/12/07/网站开启灰色显示\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>使用 IntelliJ IDEA 进行远程程序调试\",\"link\":\"/categories/fragments/2022/11/01/使用IDEA进行远程程序调试\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>CentOS 安装 Docker、Docker Compose\",\"link\":\"/categories/fragments/2022/10/31/CentOS安装Docker\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>Docker 安装 MinIO 详细步骤\",\"link\":\"/categories/fragments/2022/10/28/Docker安装MinIO\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>Docker 安装 Consul 详细步骤\",\"link\":\"/categories/fragments/2022/10/27/Docker安装Consul\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">6</div>Docker 安装 OpenLDAP 详细步骤\",\"link\":\"/categories/fragments/2022/10/26/Docker安装OpenLDAP\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">7</div>个人常用快捷键\",\"link\":\"/categories/fragments/2022/10/06/个人常用快捷键\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">8</div>个人常用 Git 命令\",\"link\":\"/categories/fragments/2022/10/05/个人常用Git命令\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">9</div>个人常用 Docker 命令\",\"link\":\"/categories/fragments/2022/10/01/个人常用Docker命令\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">10</div>内网CentOS服务器设置网络代理\",\"link\":\"/categories/fragments/2022/08/29/内网CentOS服务器设置网络代理\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">11</div>为指定Git仓库单独配置用户名和邮箱\",\"link\":\"/categories/fragments/2022/03/28/为指定Git仓库单独配置用户名和邮箱\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">12</div>修改Git所有提交记录中的作者和邮箱\",\"link\":\"/categories/fragments/2022/03/27/修改Git所有提交记录中的作者和邮箱\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">13</div>修改Git最后一次提交记录的作者和邮箱\",\"link\":\"/categories/fragments/2022/03/26/修改Git最后一次提交记录的作者和邮箱\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">14</div>合并两个Git仓库的历史提交记录\",\"link\":\"/categories/fragments/2022/03/25/合并两个Git仓库的历史提交记录\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">15</div>个人常用 SQL 函数\",\"link\":\"/categories/fragments/2022/02/16/个人常用SQL函数\"}],\"collapsed\":true},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/ox.svg\\\" title=\\\"牛年\\\" alt=\\\"生肖\\\">\\n 2021年 (2篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>设计模式之单例模式\",\"link\":\"/categories/fragments/2021/05/29/设计模式之单例模式\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>精密计算工具类-BigDecimal\",\"link\":\"/categories/fragments/2021/03/12/精密计算工具类-BigDecimal\"}],\"collapsed\":true},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/pig.svg\\\" title=\\\"猪年\\\" alt=\\\"生肖\\\">\\n 2019年 (4篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>个人常用 Linux 命令\",\"link\":\"/categories/fragments/2019/12/31/个人常用Linux命令\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>个人常用 Hutool 工具类\",\"link\":\"/categories/fragments/2019/12/30/个人常用Hutool工具类\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>个人常用 Stream 使用技巧\",\"link\":\"/categories/fragments/2019/12/29/个人常用Stream使用技巧\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>个人 SQL 优化技巧\",\"link\":\"/categories/fragments/2019/12/28/个人SQL优化技巧\"}],\"collapsed\":true}],\"/categories/solutions/\":[{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/tiger.svg\\\" title=\\\"虎年\\\" alt=\\\"生肖\\\">\\n 2022年 (1篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>递归查询树型结构数据的性能优化方案\",\"link\":\"/categories/solutions/2022/09/07/递归查询树型结构数据的性能优化方案\"}],\"collapsed\":false},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/ox.svg\\\" title=\\\"牛年\\\" alt=\\\"生肖\\\">\\n 2021年 (2篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>一条SQL查询今年每月统计信息\",\"link\":\"/categories/solutions/2021/11/22/一条SQL查询今年每月统计信息\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>用Java8获取近N天日期\",\"link\":\"/categories/solutions/2021/11/18/用Java8获取近N天日期\"}],\"collapsed\":true}],\"/categories/tools/\":[{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/ox.svg\\\" title=\\\"牛年\\\" alt=\\\"生肖\\\">\\n 2021年 (5篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>Quartz 快速入门\",\"link\":\"/categories/tools/2021/03/10/Quartz快速入门\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>Postman 快速入门\",\"link\":\"/categories/tools/2021/03/06/Postman快速入门\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>Another Redis Desktop Manager 快速入门\",\"link\":\"/categories/tools/2021/03/04/ARDM快速入门\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>Redis Desktop Manager 快速入门\",\"link\":\"/categories/tools/2021/02/22/RDM快速入门\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>初识 Lombok\",\"link\":\"/categories/tools/2021/01/14/初识Lombok\"}],\"collapsed\":false}],\"/courses/java/\":[{\"text\":\"Java语法入门 (14篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>开发环境搭建\",\"link\":\"/courses/java/01-Java语法入门/01-开发环境搭建\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>第一个Java程序\",\"link\":\"/courses/java/01-Java语法入门/02-第一个Java程序\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>初识Eclipse\",\"link\":\"/courses/java/01-Java语法入门/03-初识Eclipse\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>程序和计算机的那点事儿\",\"link\":\"/courses/java/01-Java语法入门/04-程序和计算机的那点事儿\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>变量和常量\",\"link\":\"/courses/java/01-Java语法入门/05-变量和常量\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">6</div>常用的运算符\",\"link\":\"/courses/java/01-Java语法入门/06-常用的运算符\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">7</div>控制语句和流程图\",\"link\":\"/courses/java/01-Java语法入门/07-控制语句和流程图\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; 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