【Java定义统一返回类型】

@Data
@ApiModel(value = "接口返回对象", description = "接口返回对象")
public class Result implements Serializable {

    private static final long serialVersionUID = 1L;

    
    @ApiModelProperty(value = "返回处理消息")
    private String message = "操作成功！";

    
    @ApiModelProperty(value = "返回代码")
    private Integer code = 0;

    
    @ApiModelProperty(value = "返回数据对象")
    private T data;

    
    @ApiModelProperty(value = "时间戳")
    private long timestamp = System.currentTimeMillis();

    public boolean ok()
    {
        return CommonConstant.SC_OK_200.equals(this.code);
    }

    public Result() {

    }

    
    public static  Result success(String msg, T data) {
        Result r = new Result();
        r.setCode(CommonConstant.SC_OK_200);
        r.setMessage(msg);
        r.setData(data);
        return r;
    }

    
    public static  Result fail(String msg, T data) {
        Result r = new Result();
        r.setCode(CommonConstant.SC_INTERNAL_SERVER_ERROR_500);
        r.setMessage(msg);
        r.setData(data);
        return r;
    }

    public static  Result success(T data) {
        Result r = new Result();
        r.setCode(CommonConstant.SC_OK_200);
        r.setMessage(CommonConstant.SUCCESS);
        r.setData(data);
        return r;
    }

    public static  Result fail(T data) {
        Result r = new Result();
        r.setCode(CommonConstant.SC_INTERNAL_SERVER_ERROR_500);
        r.setMessage(CommonConstant.FAIL);
        r.setData(data);
        return r;
    }

    public static  Result success(String msg) {
        Result r = new Result();
        r.setCode(CommonConstant.SC_OK_200);
        r.setMessage(msg);
        return r;
    }

    public static  Result fail(String msg) {
        Result r = new Result();
        r.setCode(CommonConstant.SC_INTERNAL_SERVER_ERROR_500);
        r.setMessage(msg);
        return r;
    }
}

public interface CommonConstant {

	
    public static final Integer SC_INTERNAL_SERVER_ERROR_500 = 500;
    
    public static final Integer SC_OK_200 = 200;

    
    public static final String SUCCESS = "成功";

    
    public static final String FAIL = "失败";

}