update

mec-im/src/main/java/com/ym/mec/im/message/ExamSongDownloadMessageMessage.java

@@ -2,6 +2,7 @@ package com.ym.mec.im.message;
 
 import com.ym.mec.im.BaseMessage;
 import com.ym.pojo.ExamSongMessage;
+import org.apache.commons.lang3.StringUtils;
 
 public class ExamSongDownloadMessageMessage extends BaseMessage {
     private ExamSongMessage content;
@@ -17,10 +18,9 @@ public class ExamSongDownloadMessageMessage extends BaseMessage {
 
     @Override
     public String toString() {
-        return "{" +
-                "url='" + content.getUrl() + '\'' +
-                ", songName='" + content.getSongName() + '\'' +
-                ", songId=" + content.getSongId() +
+        return "{\"url\":" + content.getUrl() +
+                ", \"songName\":" + content.getSongName() +
+                ", \"songId\":" + content.getSongId() +
                 '}';
     }
 

mec-im/src/main/java/com/ym/pojo/ExamSongMessage.java

@@ -39,10 +39,9 @@ public class ExamSongMessage extends BaseMessage {
 
     @Override
     public String toString() {
-        return "{" +
-                "url='" + url + '\'' +
-                ", songName='" + songName + '\'' +
-                ", songId=" + songId +
+        return "{\"url\":" + url +
+                ", \"songName\":" + songName +
+                ", \"songId\":" + songId +
                 '}';
     }
 }