返回统一结果

Result.java

public class Result<T> {
    //返回码
    private Integer code;
    //返回消息
    private String message;
    //返回数据
    private T data;

    public Result<T> message(String msg){
        this.setMessage(msg);
        return this;
    }
//    异常处理时用到
    public Result<T> code(Integer code){
        this.setCode(code);
        return this;
    }

    // 返回数据
    protected static <T> Result<T> build(T data) {
        Result<T> result = new Result<T>();
        if (data != null)
            result.setData(data);
        return result;
    }

    public static <T> Result<T> build(T body, Integer code, String message) {
        Result<T> result = build(body);
        result.setCode(code);
        result.setMessage(message);
        return result;
    }

    public static <T> Result<T> build(T body, ResultCodeEnum resultCodeEnum) {
        Result<T> result = build(body);
        result.setCode(resultCodeEnum.getCode());
        result.setMessage(resultCodeEnum.getMessage());
        return result;
    }



    public static<T> Result<T> ok(){
        return Result.ok(null);
    }

    /**
     * 操作成功
     * @param data  baseCategory1List
     * @param <T>
     * @return
     */
    public static<T> Result<T> ok(T data){
        return build(data, ResultCodeEnum.SUCCESS);
    }



    public static<T> Result<T> fail(){
        return Result.fail(null);
    }
    public static<T> Result<T> fail(T data){
        return build(data, ResultCodeEnum.FAIL);
    }

ResultCodeEnum.java

package com.nnutc.common.result;


import lombok.Getter;

@Getter
public enum ResultCodeEnum {

    SUCCESS(200,"成功"),
    FAIL(201, "失败"),
    SERVICE_ERROR(2012, "服务异常"),
    DATA_ERROR(204, "数据异常"),
    ILLEGAL_REQUEST(205, "非法请求"),
    REPEAT_SUBMIT(206, "重复提交"),
    ARGUMENT_VALID_ERROR(210, "参数校验异常"),

    LOGIN_AUTH(208, "未登陆"),
    PERMISSION(209, "没有权限"),
    ACCOUNT_ERROR(214, "账号不正确"),
    PASSWORD_ERROR(215, "密码不正确"),
    LOGIN_MOBLE_ERROR( 216, "账号不正确"),
    ACCOUNT_STOP( 217, "账号已停用"),
    NODE_ERROR( 218, "该节点下有子节点，不可以删除")
    ;

    private Integer code;

    private String message;

    private ResultCodeEnum(Integer code, String message) {
        this.code = code;
        this.message = message;
    }
}

使用

   @GetMapping("findAll")
    public Result findAll() {
        System.out.println("/admin/system/sysRole/findAll被访问");
        QueryWrapper<SysRole> wrapper = null;
        List<SysRole> sysRoleList = sysRoleService.list(wrapper);
        if (sysRoleList!=null){
            return Result.ok(sysRoleList).message("查询成功！");
        }else{
            return Result.fail(null).message("查询失败！");
        }

    }