spring boot获取本机ip和端口号/请求参数和返回值（ResponseBodyAdvice/RequestBodyAdvice ）

最新推荐文章于 2025-07-06 15:39:04 发布

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本文介绍了一种在SpringBoot中获取应用程序运行端口号的方法，并展示了如何通过自定义RequestBodyAdvice来处理请求参数，包括解密操作。同时，提供了ResponseBodyAdvice的实现，用于在响应前对数据进行预处理。

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获取系统端口号：

@Configuration
public class ServiceInfoUtil implements ApplicationListener<EmbeddedServletContainerInitializedEvent> {
    private static EmbeddedServletContainerInitializedEvent event;

    @Override
    public void onApplicationEvent(EmbeddedServletContainerInitializedEvent event) {
        ServiceInfoUtil.event = event;
    }

    public static int getIpAndPort() {
        int port = event.getEmbeddedServletContainer().getPort();
        Assert.state(port != -1, "端口号获取失败");
        InetAddress address = null;
        try {
            address = InetAddress.getLocalHost();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
        return address.getHostAddress() +":"+port;
    }
 }

请求参数

@ControllerAdvice
public class ××××RequestBodyAdvice implements RequestBodyAdvice {

	@Override
	public boolean supports(MethodParameter methodParameter, Type type, Class<? extends HttpMessageConverter<?>> aClass) {
		return methodParameter.hasParameterAnnotation(RequestBody.class);
	}

	@Override
	public Object handleEmptyBody(Object o, HttpInputMessage httpInputMessage, MethodParameter methodParameter, Type type, Class<? extends HttpMessageConverter<?>> aClass) {
		return o;
	}

	@Override
	public HttpInputMessage beforeBodyRead(HttpInputMessage httpInputMessage, MethodParameter methodParameter, Type type, Class<? extends HttpMessageConverter<?>> aClass) throws IOException {
		return new HttpInputMessage() {
			@Override
			public InputStream getBody() throws IOException {
				return new ByteArrayInputStream(IOUtils.toString(httpInputMessage.getBody()).replace("-encrypt", "").getBytes(StandardCharsets.UTF_8));
			}

			@Override
			public HttpHeaders getHeaders() {
				return httpInputMessage.getHeaders();
			}
		};
	}

	@Override
	public Object afterBodyRead(Object o, HttpInputMessage httpInputMessage, MethodParameter methodParameter, Type type, Class<? extends HttpMessageConverter<?>> aClass) {
		return o;
	}
}

返回值

@ControllerAdvice
public class TestResponseBodyAdvice implements ResponseBodyAdvice {

    @Override
    public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType, Class aClass, ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {

        System.out.println("TestResponseBodyAdvice==>beforeBodyWrite:" + o.toString() + ","
                + methodParameter);
        return o;
    }


    @Override
    public boolean supports(MethodParameter methodParameter, Class aClass) {
        return true;
    }
}