强大的阿里fastjson JSON工具类

“fastjson是阿里巴巴的开源JSON解析库,它可以解析JSON格式的字符串,支持将Java Bean序列化为JSON字符串,也可以从JSON字符串反序列化到JavaBean。其具有速度快及使用简单的优点。”

使用前先导入Maven依赖

    com.alibaba
    fastjson
    1.2.70

开始封装

1.创建ResultStatus

import lombok.Getter;
import lombok.ToString;
import org.springframework.http.HttpStatus;

@ToString
@Getter
public enum ResultStatus {

    SUCCESS(HttpStatus.OK, 200, "OK"),
    BAD_REQUEST(HttpStatus.BAD_REQUEST, 400, "Bad Request"),
    INTERNAL_SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, 500, "Internal Server Error"),;

    
    private HttpStatus httpStatus;
    
    private Integer code;
    
    private String message;

    ResultStatus(HttpStatus httpStatus, Integer code, String message) {
        this.httpStatus = httpStatus;
        this.code = code;
        this.message = message;
    }
}

2.创建Result

import lombok.Getter;
import lombok.ToString;

@Getter
@ToString
public class Result {
    
    private Integer code;
    
    private String message;
    
    private T data;

    public Result(ResultStatus resultStatus, T data) {
        this.code = resultStatus.getCode();
        this.message = resultStatus.getMessage();
        this.data = data;
    }

    
    public static Result success() {
        return new Result(ResultStatus.SUCCESS, null);
    }

    
    public static  Result success(T data) {
        return new Result(ResultStatus.SUCCESS, data);
    }

    
    public static  Result success(ResultStatus resultStatus, T data) {
        if (resultStatus == null) {
            return success(data);
        }
        return new Result(resultStatus, data);
    }

    
    public static  Result failure() {
        return new Result(ResultStatus.INTERNAL_SERVER_ERROR, null);
    }

    
    public static  Result failure(ResultStatus resultStatus) {
        return failure(resultStatus, null);
    }

    
    public static  Result failure(ResultStatus resultStatus, T data) {
        if (resultStatus == null) {
            return new Result(ResultStatus.INTERNAL_SERVER_ERROR, null);
        }
        return new Result(resultStatus, data);
    }
}

3.如何在Controller中使用？

    @DeleteMapping("/UserDelete/{id}")
    public Result UserDelete(@PathVariable("id") Integer id) {
        int i = sysUserService.UserDelete(id);
        return Result.success(i);
    }