http请求返回的最外层对象

返回样式：

#成功
{
    "code": 0,
    "msg": "成功",
    "data": {
        "id": 7,
        "cupSize": "A",
        "age": 22,
        "money": 12
    }
}

#失败
{
    "code": 1,
    "msg": "金额必传",
    "data": null
}

Result类
使用泛型

package com.imooc.domain;

/**
 * http请求返回的最外层对象
 * Created by Administrator on 2018/12/1.
 */
public class Result<T> {
    /** 错误码 */
    private Integer code;

    /** 提示信息 */
    private String msg;

    /** 具体的内容 */
    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;
    }
}

ResultUtils工具类

package com.imooc.utils;

import com.imooc.domain.Result;

/**
 * Created by Administrator on 2018/12/1.
 */
public class ResultUtil {
    public static Result success(Object object){
        Result result = new Result();
        result.setCode(0);
        result.setMsg("成功");
        result.setData(object);
        return result;
    }

    public static Result success(){
        return success(null);
    }

    public static Result error(Integer code,String msg){
        Result result = new Result();
        result.setCode(code);
        result.setMsg(msg);
        return result;
    }
}

Controll层中调用

/**
     * 添加一个女生
     * @return
     */
    @PostMapping(value = "/girls")
    public Result<Girl> girlAdd(@Valid Girl girl, BindingResult bindingResult) {
        if (bindingResult.hasErrors()) {
			#返回失败信息
            return ResultUtil.error(1,bindingResult.getFieldError().getDefaultMessage());
        }

        girl.setCupSize(girl.getCupSize());
        girl.setAge(girl.getAge());
		#返回成功信息
        return ResultUtil.success(girlRepository.save(girl));
    }