java 抛出异常和消息返回格式设置

原创已于 2023-03-01 16:21:24 修改 · 195 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#java #spring #mybatis

于 2023-03-01 16:21:09 首次发布

java 专栏收录该内容

9 篇文章

订阅专栏

本文展示了如何在Java中创建自定义异常类(BaseException和服务异常ServiceException)，以及定义一个表示成功或失败状态的CodeEnum枚举。ResponseEntity是一个用于构建服务响应的类，包含了数据、状态码和消息。提供了静态方法来方便创建成功或失败的响应。

service异常抛出

public class BaseException extends RuntimeException {

    /**
     * 
     */
    private static final long serialVersionUID = 7859712770754900356L;

    public BaseException(String msg) {
      super(msg);
    }

    public BaseException(Exception e){
      this(e.getMessage());
    }
}

public class ServiceException extends BaseException {

    /**
     * 
     */
    private static final long serialVersionUID = -2437160791033393978L;

    public ServiceException(String msg) {
      super(msg);
    }

    public ServiceException(Exception e){
      this(e.getMessage());
    }
}

返回消息格式code=0成功 code=1失败

public enum CodeEnum {
    SUCCESS(0),
    ERROR(1);

    private Integer code;
    CodeEnum(Integer code){
        this.code = code;
    }

    public Integer getCode() {
        return code;
    }

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

@Data
@NoArgsConstructor
@AllArgsConstructor
public class ResponseEntity<T> implements Serializable {


    private static final long serialVersionUID = -4696008537295855861L;
    private T data;
    private Integer code;
    private String msg;

    public static <T> ResponseEntity<T> succeed(String msg) {
        return succeedWith(null, CodeEnum.SUCCESS.getCode(), msg);
    }

    public static <T> ResponseEntity<T> succeed(T model, String msg) {
        return succeedWith(model, CodeEnum.SUCCESS.getCode(), msg);
    }

    public static <T> ResponseEntity<T> succeedWith(T data, Integer code, String msg) {
        return new ResponseEntity<T>(data, code, msg);
    }

    public static <T> ResponseEntity<T> failed(String msg) {
        return failedWith(null, CodeEnum.ERROR.getCode(), msg);
    }

    public static <T> ResponseEntity<T> failed(T model, String msg) {
        return failedWith(model, CodeEnum.ERROR.getCode(), msg);
    }

    public static <T> ResponseEntity<T> failedWith(T data, Integer code, String msg) {
        return new ResponseEntity<T>(data, code, msg);
    }

}

使用案例：