feat(messaging/mail): 邮件支持自定义发件人

Closes #5

continew-starter-messaging/continew-starter-messaging-mail/src/main/java/top/continew/starter/messaging/mail/core/MailConfig.java

@@ -62,6 +62,11 @@ public class MailConfig {
      */
     private String password;
 
+    /**
+     * 发件人
+     */
+    private String from;
+
     /**
      * 是否启用 SSL 连接
      */
@@ -121,6 +126,14 @@ public class MailConfig {
         this.password = password;
     }
 
+    public String getFrom() {
+        return from;
+    }
+
+    public void setFrom(String from) {
+        this.from = from;
+    }
+
     public boolean isSslEnabled() {
         return sslEnabled;
     }
@@ -157,6 +170,7 @@ public class MailConfig {
     public Properties toJavaMailProperties() {
         Properties javaMailProperties = new Properties();
         javaMailProperties.putAll(this.getProperties());
+        javaMailProperties.put("mail.from", this.getFrom());
         javaMailProperties.put("mail.smtp.auth", true);
         javaMailProperties.put("mail.smtp.ssl.enable", this.isSslEnabled());
         if (this.isSslEnabled()) {

continew-starter-messaging/continew-starter-messaging-mail/src/main/java/top/continew/starter/messaging/mail/util/MailUtils.java

@@ -164,7 +164,8 @@ public class MailUtils {
         MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true, StandardCharsets.UTF_8
             .displayName());
         // 设置基本信息
-        messageHelper.setFrom(mailSender.getUsername());
+        messageHelper.setFrom(CharSequenceUtil.blankToDefault(mailSender.getJavaMailProperties()
+            .getProperty("mail.from"), mailSender.getUsername()));
         messageHelper.setSubject(subject);
         messageHelper.setText(content, isHtml);
         // 设置收信人