5. Unified Return Type

Custom return type

package com.gunsmoke.commonUtils;

import lombok.Data;


@Data
public class BaseResult
{
    private String code;

    private String message;

    private boolean status;

    private Object data;

    private BaseResult() {

    }

    public static BaseResult success()
    {
        BaseResult baseResult = new BaseResult();
        baseResult.setCode(ResultNum.SUCCESS.getCode());
        baseResult.setMessage(ResultNum.SUCCESS.getMessage());
        baseResult.setData(null);
        return  baseResult;
    }

    public static BaseResult success(Object data)
    {
        BaseResult baseResult = new BaseResult();
        baseResult.setCode(ResultNum.SUCCESS.getCode());
        baseResult.setMessage(ResultNum.SUCCESS.getMessage());
        baseResult.setData(data);
        return  baseResult;
    }

    public static BaseResult error(ResultNum resultNum)
    {
        BaseResult baseResult = new BaseResult();
        baseResult.setCode(resultNum.getCode());
        baseResult.setMessage(resultNum.getMessage());
        return baseResult;
    }

}

Enumerated type

/**
 * Copyright (c) 2020 ucsmy.com, All rights reserved.
 */
package com.gunsmoke.commonUtils;


public enum ResultNum
{

    SUCCESS("200", "成功"),

    GLOBAL_ERROR("-1","接口调用错误"),

    PARAM_ERROR("201", "参数不合法"),

    DATABASE_ERROR("202", "数据库异常");


    private String code;
    private String message;

    ResultNum(String code, String message) {
        this.code = code;
        this.message = message;
    }

    public String getCode() {
        return code;
    }

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

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

}

controller used

@Api(description = "讲师管理")
@RestController
@RequestMapping("/eduservice/edu-teacher")
public class EduTeacherController {

    @Autowired
    private EduTeacherService teacherService;

    @ApiOperation(value = "查询所有讲师列表")
    @GetMapping("findAll")
    public BaseResult findAllTeacher()
    {
        List<EduTeacher> list = teacherService.list(null);
        //return  BaseResult.success(list);
        return  BaseResult.error(ResultNum.GLOBAL_ERROR);
    }

}

Figure engineering structures