Java 如何在spring boot应用程序中关闭客户端sse连接
我有一个spring启动应用程序,我必须使用SSE连接到一些外部服务。WebClient建立连接,然后我使用Flux读取响应。一切正常,但问题是连接保持打开状态,因为在第三方服务中,流程不是设计为每次都达到终点。我想作为客户端手动关闭连接,因为我知道此连接应该在何时完成。我该怎么做 建立连接:Java 如何在spring boot应用程序中关闭客户端sse连接,java,spring-boot,webclient,flux,Java,Spring Boot,Webclient,Flux,我有一个spring启动应用程序,我必须使用SSE连接到一些外部服务。WebClient建立连接,然后我使用Flux读取响应。一切正常,但问题是连接保持打开状态,因为在第三方服务中,流程不是设计为每次都达到终点。我想作为客户端手动关闭连接,因为我知道此连接应该在何时完成。我该怎么做 建立连接: private Flux<ServerSentEvent<String>> connect(String accessToken) { TcpClient timeoutC
private Flux<ServerSentEvent<String>> connect(String accessToken) {
TcpClient timeoutClient = createTimeoutClient();
ReactorClientHttpConnector reactorClientHttpConnector = new ReactorClientHttpConnector(HttpClient.from(timeoutClient));
String url = npzServerBaseUrl+uniqueCodePath;
WebClient client = WebClient
.builder()
.clientConnector(reactorClientHttpConnector)
.defaultHeader(HttpHeaders.AUTHORIZATION, Naming.TOKEN_PREFIX + accessToken)
.baseUrl(url)
.build();
ParameterizedTypeReference<ServerSentEvent<String>> type
= new ParameterizedTypeReference<ServerSentEvent<String>>() {};
return client.get()
.retrieve()
.onStatus(HttpStatus::is4xxClientError, clientResponse -> {
String msg = "Error from server: "+clientResponse.statusCode().toString();
//invalidate access token
if (clientResponse.statusCode().value()==401) {
//remove invalid token and connect again
loginContext.invalidToken(accessToken);
return Mono.error(new InvalidNpzToken(msg));
}
return Mono.error(new IllegalStateException(msg));
}
)
.onStatus(HttpStatus::is5xxServerError, clientResponse ->
Mono.error(new IllegalStateException("Error from server: "+clientResponse.statusCode().toString()))
)
.bodyToFlux(type);
}
private TcpClient createTimeoutClient() {
return TcpClient.create()
.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, SECONDS*1000)
.option(EpollChannelOption.TCP_USER_TIMEOUT, SECONDS*1000)
.doOnConnected(
c -> c.addHandlerLast(new ReadTimeoutHandler(SECONDS))
.addHandlerLast(new WriteTimeoutHandler(SECONDS)));
}
弹簧靴:
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>
org.springframework.boot
spring启动程序父级
2.1.1.1发布
eventStream.subscribe()
返回一个reactor.core.Disposable
您可以在其上调用
dispose()
,以取消订阅和基础资源。谢谢。我实际上是在阅读这种方法的文档,但不是一直读到最后一行:)
import io.netty.channel.ChannelOption;
import io.netty.channel.epoll.EpollChannelOption;
import io.netty.handler.timeout.ReadTimeoutHandler;
import io.netty.handler.timeout.WriteTimeoutHandler;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.http.codec.ServerSentEvent;
import org.springframework.stereotype.Component;
import org.springframework.web.reactive.function.client.WebClient;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.netty.http.client.HttpClient;
import reactor.netty.tcp.TcpClient;
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.1.RELEASE</version>