逻辑优化

lib/EmergencyService/zdxtEmergencyKnowledgeService/src/main/java/com/zdxt/knowledge/controller/WechatLoginController.java

@@ -136,7 +136,8 @@ public class WechatLoginController extends BaseController {
                 return ZDResponse.success("0", null);
             }
             // 否则更新
-            medalStr += StringUtils.isNotEmpty(medalStr) ? "," + medalObj.getGuid() : medalObj.getGuid();
+            medalStr = StringUtils.isNotEmpty(medalStr) ? medalStr + "," + medalObj.getGuid() : medalObj.getGuid();
+            // medalStr += StringUtils.isNotEmpty(medalStr) ? "," + medalObj.getGuid() : medalObj.getGuid();
             wechatUser.setMedal(medalStr);
             wechatUser.setActive(0);
             return wechatService.update(wechatUser) > 0