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perf(web): 优化文件工具类下载文件逻辑，减少堆内存占用 (#12)

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司马琦昂
2025-04-16 16:50:54 +08:00
committed by GitHub
parent a4d1731862
commit 4e7cd51868
1 changed files with 3 additions and 4 deletions
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7
continew-starter-web/src/main/java/top/continew/starter/web/util/FileUploadUtils.java
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@@ -18,7 +18,6 @@ package top.continew.starter.web.util;
import cn.hutool.core.date.DatePattern;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.io.IoUtil;
import cn.hutool.core.io.file.FileNameUtil;
import cn.hutool.core.util.IdUtil;
import cn.hutool.core.util.URLUtil;
@@ -104,11 +103,11 @@ public class FileUploadUtils {
public static void download(HttpServletResponse response,
InputStream inputStream,
String fileName) throws IOException {
byte[] bytes = IoUtil.readBytes(inputStream);
response.setCharacterEncoding(StandardCharsets.UTF_8.toString());
response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
response.setContentLength(bytes.length);
response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + URLUtil.encode(fileName));
IoUtil.write(response.getOutputStream(), true, bytes);
try (inputStream; var outputStream = response.getOutputStream()) {
response.setContentLengthLong(inputStream.transferTo(outputStream));
}
}
}