在一个项目开发的过程中,需要使用统一的返回封装对象。这样里面有统一的code, 和对应的message.既方便了后端,也方便前端。
1.代码:

public class FastResponse<T> implements Serializable {

    @ApiModelProperty(value = "code编码")
    private String code;

    @ApiModelProperty(value = "返回信息")
    private String message;

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


    public boolean isSuccess() {
        return ResponseEnum.OK.value().equals(this.code);
    }

    public static <T> FastResponse<T> success(T data) {
        FastResponse<T> fastResponse = new FastResponse<>();
        fastResponse.setData(data);
        fastResponse.setCode(ResponseEnum.OK.value());
        return fastResponse;
    }

    public static <T> FastResponse<T> success() {
        FastResponse<T> fastResponse = new FastResponse<>();
        fastResponse.setCode(ResponseEnum.OK.value());
        fastResponse.setMessage(ResponseEnum.OK.getMsg());
        return fastResponse;
    }

    public static <T> FastResponse<T> fail(ResponseEnum responseEnum) {
        FastResponse<T> fastResponse = new FastResponse<>();
        fastResponse.setMessage(responseEnum.getMsg());
        fastResponse.setCode(responseEnum.value());
        return fastResponse;
    }

    public static <T> FastResponse<T> fail(ResponseEnum responseEnum, T data) {
        FastResponse<T> fastResponse = new FastResponse<>();
        fastResponse.setMessage(responseEnum.getMsg());
        fastResponse.setCode(responseEnum.value());
        fastResponse.setData(data);
        return fastResponse;
    }

    /**
     * 前端显示失败消息
     *
     * @param msg 失败消息
     * @return
     */
    public static <T> FastResponse<T> showFailMsg(String msg) {

        FastResponse<T> fastResponse = new FastResponse<>();
        fastResponse.setMessage(msg);
        fastResponse.setCode(ResponseEnum.SHOW_FAIL.value());
        return fastResponse;
    }

    public String getCode() {
        return code;
    }

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

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
}

然后再写代码的时候,调用合适的类方法即可。