统一返回格式

返回类

package com.jimo.utils;

public class Result<T> {
    private Integer code;
    private String msg;
    private T data;

    public Integer getCode() {
        return code;
    }

    public void setCode(Integer code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
}

工具类

package com.jimo.utils;

public class ResultHelper {
    public static Result<Object> success(Object obj) {
        Result<Object> re = new Result<>();
        re.setCode(0);// 假设成功为0
        re.setMsg("OK");
        re.setData(obj);
        return re;
    }

    public static Result<Object> success() {
        Result<Object> re = new Result<>();
        re.setCode(0);// 假设成功为0
        re.setMsg("OK");
        re.setData(null);
        return re;
    }

    public static Result<Object> error(Integer code, String msg) {
        Result<Object> re = new Result<>();
        re.setCode(code);
        re.setMsg(msg);
        re.setData(null);
        return re;
    }
}

使用

然后在menAdd里使用：

原来：

@PostMapping("/addMen")
    public Men addOneMen(@Valid Men men, BindingResult br) {
        if (br.hasErrors()) {
            System.out.println(br.getAllErrors().toString());
            return null;
        }
        return mp.save(men);
    }

现在：

@PostMapping("/addMen")
    public Result<Object> addOneMen(@Valid Men men, BindingResult br) {
        if (br.hasErrors()) {
            return ResultHelper.error(1, br.getAllErrors().toString());
        }
        return ResultHelper.success(mp.save(men));
    }

结果：

{
  "code": 1,
  "msg": "[Field error in object 'men' on field 'age': rejected value [17]; codes [Min.men.age,Min.age,Min.java.lang.Integer,Min]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [men.age,age]; arguments []; default message [age],18]; default message [未成年禁止入内]]",
  "data": null
}

{
  "code": 0,
  "msg": "OK",
  "data": {
    "id": 4,
    "name": "lily12",
    "age": 20
  }
}