实现登录，编写错误码，实现错误码返回json

src/main/java/com/fjy/spring/untils/ResultUtil.java

@@ -0,0 +1,12 @@
+package com.fjy.spring.untils;
+
+import com.fjy.spring.domain.Result;
+
+public class ResultUtil {
+    public static Result error(Integer code,String msg){
+        Result result = new Result();
+        result.setCode(code);
+        result.setMessage(msg);
+        return result;
+    }
+}