捕获异常返回结果

common/src/main/java/com/diagbot/dto/RespDTO.java

@@ -20,6 +20,13 @@ public class RespDTO<T> implements Serializable {
         return resp;
     }
 
+    public static RespDTO onError(String errMsg) {
+        RespDTO resp = new RespDTO();
+        resp.code = "-1";
+        resp.msg = errMsg;
+        return resp;
+    }
+
     @Override
     public String toString() {
         return "RespDTO{" +