返回值工具类

1.常量值
public interface ResultCode {

    public static Integer SUCCESS = 20000;
    public static Integer ERROR = 20001;
}



2.返回值类

import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

import java.util.HashMap;

@Data
public class R {

  @ApiModelProperty(value = "是否成功")

  private Boolean success;


  @ApiModelProperty(value = "返回码")

  private Integer code;


  @ApiModelProperty(value = "返回消息")

  private String message;


  @ApiModelProperty(value = "返回数据")

  private java.util.Map<String, Object> data = new HashMap<String, Object>();


  private R(){}


  public static R ok(){

      R r = new R();

      r.setSuccess(true);

      r.setCode(ResultCode.SUCCESS);

      r.setMessage("成功");

      return r;

  }


  public static R error(){

      R r = new R();

      r.setSuccess(false);

      r.setCode(ResultCode.ERROR);

      r.setMessage("失败");

      return r;

  }


  public R success(Boolean success){

      this.setSuccess(success);

      return this;

  }


  public R message(String message){

      this.setMessage(message);

      return this;

  }


  public R code(Integer code){

      this.setCode(code);

      return this;

  }


  public R data(String key, Object value){

      this.data.put(key, value);

      return this;

  }


  public R data(java.util.Map<String, Object> map){

      this.setData(map);

      return this;

  }

}

返回值工具类

原文：https://www.cnblogs.com/upupup-999/p/14875030.html