SpringBoot通用返回JSON数据封装类

ResultCode接口

public interface ResultCode {
    public static Integer SUCCESS = 20000;
    public static Integer ERROR = 20001;
}

R实现类

@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 Map<String, Object> data = new HashMap<String, Object>();

   //构造方法私有化
    private R(){}

    //成功的静态方法

    public static R ok(){
        R r=new R();
        r.setSuccess(true);
        r.setCode(ResultCode.SUCCESS);
        r.setMessage("成功");
        return r;
    }

    //失败的静态方法

    public static R error(){
        R r=new R();
        r.setSuccess(true);
        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(Map<String, Object> map){
        this.setData(map);
        return this;
    }
}