SpringBoot封装Json数据

1.创建模块

2.创建封装数据类ResultCode，类R

public class ResultCode {

    public static Integer SUCCESS = 20000; //成功

    public static Integer ERROR = 20001; //失败

}

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

import java.util.HashMap;
import java.util.Map;

@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>();

    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(Map<String, Object> map){
        this.setData(map);
        return this;
    }
}

3.调用R类需要在其他模块的pom中引入模块

        <dependency>
            <groupId>com.mine</groupId>
            <artifactId>common_util</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>