fix用户私聊消息

mec-im/src/main/java/com/ym/controller/PrivateController.java

@@ -1,5 +1,6 @@
 package com.ym.controller;
 
+import com.alibaba.fastjson.JSON;
 import com.google.common.collect.Lists;
 import com.microsvc.toolkit.middleware.common.http.ImageUtil;
 import com.microsvc.toolkit.middleware.im.ImPluginContext;
@@ -106,7 +107,7 @@ public class PrivateController {
             }
         }
         Boolean ret = imPluginContext.getPluginService().sendPrivateMessage(build);
-        log.info("privateMessage send ret:{}", ret);
+        log.info("privateMessage send ret:{}, service={}, content={}", ret, imPluginContext.defaultService(), JSON.toJSONString(build));
 
         return true;
     }