【开端】JAVA Mono＜Void＞向前端返回没有登陆或登录超时 暂无权限访问信息组装

一、绪论

   JAVA接口返回信息ServerHttpResponse response

等登录接口token过期时需要给前端返回相关状态码和状态信息

二、Mono<Void>向前端返回没有登陆或登录超时 暂无权限访问信息组装

返回Mono对象

public abstract class Mono<T> implements CorePublisher<T>

	/**
	 * 无权限
	 * 
	 * @param response
	 * @return
	 */
	private Mono<Void> noLogin(ServerHttpResponse response) {
		log.info("没有登陆或登录超时 暂无权限访问===========");
		String responseDataStr = JSON
				.toJSON(ResponseData.error(HttpStatus.UNAUTHORIZED.value(), "The Token has expired")).toString();
		byte[] bytes = responseDataStr.getBytes(StandardCharsets.UTF_8);
		DataBuffer buffer = response.bufferFactory().wrap(bytes);
		response.setStatusCode(HttpStatus.UNAUTHORIZED);
		return response.writeWith(Mono.just(buffer));
	}

信息组装。

1、返回ResponseData对象，输出状态码和状态信息：The Token has expired

ResponseData.error(HttpStatus.UNAUTHORIZED.value(), "The Token has expired")

转换成json信息

byte[] bytes = responseDataStr.getBytes(StandardCharsets.UTF_8);

转换成字节流

输出：

response.writeWith(Mono.just(buffer));

公共返回体封装：ResponseData

public class ResponseData<T> implements Serializable {
 
    /**
	 * 
	 */
	private static final long serialVersionUID = 7098362967623367826L;
 
	/**
     * 响应状态码
     */
    private Integer code;
 
    /**
     * 响应信息
     */
    private String message;
 
    /**
     * 响应对象
     */
    private T data;
 
    /** 是否加密返回参数*/
    private boolean encrypt;
 
    public Integer getCode() {
        return code;
    }
 
    public void setCode(Integer 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;
    }
 
    public static <T> ResponseData<T> success() {
        return success(ResponseCode.SUCCESS);
    }
 
    public static <T> ResponseData<T> success(ResponseCode code) {
        return success(code, null);
    }
 
    public static <T> ResponseData<T> success(T object) {
        return success(ResponseCode.SUCCESS, object);
    }
 
    public static <T> ResponseData<T> success(ResponseCode code, T object) {
        return success(code.getCode(), code.getMessage(), object);
    }
 
    public static <T> ResponseData<T> success(Integer code, String message, T data) {
        ResponseData<T> response = new ResponseData<>();
        response.setCode(code);
        response.setMessage(message);
        response.setData(data);
        return response;
    }
 
    public static <T> ResponseData<T> error() {
        return error(ResponseCode.FAILED);
    }
 
    public static <T> ResponseData<T> error(ResponseCode code) {
        return error(code, null);
    }
 
    public static <T> ResponseData<T> error(String message) {
        return error(ResponseCode.FAILED.getCode(), message, null);
    }
 
    public static <T> ResponseData<T> error(Integer code, String message) {
        return error(code, message, null);
    }
 
    public static <T> ResponseData<T> error(ResponseCode code, T data) {
        return error(code.getCode(), code.getMessage(), data);
    }
 
    public static <T> ResponseData<T> error(Integer code, String message, T data) {
        ResponseData<T> response = new ResponseData<>();
        response.setCode(code);
        response.setMessage(message);
        response.setData(data);
        return response;
    }
 
 
    public boolean isEncrypt() {
        return encrypt;
    }
 
    public void setEncrypt(boolean encrypt) {
        this.encrypt = encrypt;
    }
}