fix：修改gamma报告 #MINIMUM 部分，mdc标题增加单位，mda没数据则不显示

jeecg-boot-base-core/src/main/java/org/jeecg/common/util/MyMailUtil.java

@@ -0,0 +1,83 @@
+package org.jeecg.common.util;
+
+import cn.hutool.core.util.StrUtil;
+
+import javax.mail.Message;
+import javax.mail.MessagingException;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeMessage;
+import java.util.Date;
+import java.util.Objects;
+
+public class MyMailUtil {
+
+    private Integer port;
+
+    public MyMailUtil(Integer port){
+        this.port = port;
+    }
+
+    /**
+     * 获取邮件主题
+     * @param message
+     * @return
+     */
+    public static String getSubject(Message message) throws MessagingException{
+        String subject = null;
+        try {
+            subject = message.getSubject();
+        } catch (MessagingException e) {
+            try {
+                subject = message.getHeader("subject")[0];
+            } catch (MessagingException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+        return subject;
+    }
+
+    public static Date getReceivedDate(Message message) throws MessagingException{
+        Date receivedDate = null;
+        try {
+            receivedDate = message.getReceivedDate();
+        } catch (MessagingException e) {
+            try {
+                receivedDate = new Date(message.getHeader("Date")[0]);
+            } catch (MessagingException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+        return receivedDate;
+    }
+
+    public static String getMessageID(Message message) throws MessagingException{
+        String messageId = "";
+        try {
+            messageId = ((MimeMessage) message).getMessageID();
+        } catch (MessagingException e) {
+            try {
+                messageId = Objects.isNull(message.getHeader("Message-ID")) ? "" : message.getHeader("Message-ID")[0];
+            } catch (MessagingException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+        return messageId;
+    }
+
+    public static String getAddress(Message message) throws MessagingException{
+        String address = "";
+        try {
+            address = ((InternetAddress) message.getFrom()[0]).getAddress();
+        } catch (MessagingException e) {
+            try {
+                String[] froms = message.getHeader("From");
+                if (null != froms) {
+                    address = StrUtil.subBetween(froms[0], "<",">");
+                }
+            } catch (MessagingException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+        return address;
+    }
+}