From 9f8e21383d227ae9e46b04048c57e763d65235c8 Mon Sep 17 00:00:00 2001
From: 18792927508 <1322446236@qq.com>
Date: Mon, 25 Dec 2023 16:03:10 +0800
Subject: [PATCH] 1

---
 .../com/ruoyi/common/utils/EmailUtil.java     | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 ruoyi-common/src/main/java/com/ruoyi/common/utils/EmailUtil.java

diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/EmailUtil.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/EmailUtil.java
new file mode 100644
index 0000000..bb1f2d2
--- /dev/null
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/EmailUtil.java
@@ -0,0 +1,68 @@
+package com.ruoyi.common.utils;
+
+import lombok.extern.slf4j.Slf4j;
+
+import javax.mail.*;
+import javax.mail.internet.MimeMessage;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+@Slf4j
+public final class EmailUtil {
+
+    private static final String multipart = "multipart/*";
+
+
+
+    public static String getMessageId(Part part, Session session) throws Exception {
+         if (!part.isMimeType(multipart)) {
+            return "";
+
+        }
+
+        Multipart multipart = (Multipart) part.getContent();
+        for (int i = 0; i < multipart.getCount(); i++) {
+            BodyPart bodyPart = multipart.getBodyPart(i);
+            if(bodyPart.getContentType().contains("Message/Rfc822")){
+                MimeMessage mimeMessage = new MimeMessage(session, bodyPart.getInputStream());
+               if(mimeMessage.getSubject()!=null&&mimeMessage.getSubject().contains("裁决书")){
+                   String[] split = mimeMessage.getSubject().split("裁决书");
+                   if(split.length>0){
+                       return split[0];
+                   }
+               }
+            }
+        } return "";
+    }
+
+    public static boolean isContainAttachment(Part part) {
+        boolean attachFlag = false;
+        try {
+            if (part.isMimeType(multipart)) {
+                Multipart mp = (Multipart) part.getContent();
+                for (int i = 0; i < mp.getCount(); i++) {
+                    BodyPart mpart = mp.getBodyPart(i);
+                    String disposition = mpart.getDisposition();
+                    if ((disposition != null) && ((disposition.equals(Part.ATTACHMENT)) || (disposition.equals(Part.INLINE))))
+                        attachFlag = true;
+                    else if (mpart.isMimeType(multipart)) {
+                        attachFlag = isContainAttachment((Part) mpart);
+                    } else {
+                        String contype = mpart.getContentType();
+                        if (contype.toLowerCase().contains("application"))
+                            attachFlag = true;
+                        if (contype.toLowerCase().contains("name"))
+                            attachFlag = true;
+                    }
+                }
+            } else if (part.isMimeType("message/rfc822")) {
+                attachFlag = isContainAttachment((Part) part.getContent());
+            }
+        } catch (MessagingException | IOException e) {
+            e.printStackTrace();
+        }
+        return attachFlag;
+    }
+}
\ No newline at end of file