英文:
finishConnect(..) failed: Connection refused: localhost/127.0.0.1 , error: Webflux, Webclient, Spring boot, java
问题
我在使用本地主机中的 webclient 时遇到了这个错误，你们能帮我解决吗？
ERROR org.springframework.boot.autoconfigure.web.reactive.error.AbstractErrorWebExceptionHandler - [0e1ef5cd-1] 500 服务器错误，HTTP GET "/product/spec/template/posts"。
product | io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) 失败：连接被拒绝：localhost/127.0.0.1:8090
product | 被抑制的异常：reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
product | 在以下位置观察到错误：
product | |_ checkpoint ⇢ 发起 GET 请求 http://localhost:8090/retailer/retailer/posts/12 [DefaultWebClient]
product | |_ checkpoint ⇢ 处理器 com.zucco.tech.hm.service.product.controller.ProductSpecTemplateController#posts() [DispatcherHandler]
product | |_ checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
product | |_ checkpoint ⇢ HTTP GET "/product/spec/template/posts" [ExceptionHandlingWebHandler]
product | 堆栈跟踪：
product | 由于：java.net.ConnectException: finishConnect(..) 失败：连接被拒绝
product | 在 io.netty.channel.unix.Errors.throwConnectException(Errors.java:124) ~[netty-transport-native-unix-common-4.1.51.Final.jar!/:4.1.51.Final]
英文:
I'm having this error while using webclient in localhost, can you help me guys ??
ERROR org.springframework.boot.autoconfigure.web.reactive.error.AbstractErrorWebExceptionHandler - [0e1ef5cd-1] 500 Server Error for HTTP G
ET "/product/spec/template/posts"
product | io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: localhost/127.0.0.1:8090
product | Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
product | Error has been observed at the following site(s):
product | |_ checkpoint ⇢ Request to GET http://localhost:8090/retailer/retailer/posts/12 [DefaultWebClient]
product | |_ checkpoint ⇢ Handler com.zucco.tech.hm.service.product.controller.ProductSpecTemplateController#posts() [DispatcherHandler]
product | |_ checkpoint ⇢ org.springframework.boot.actuate.metrics.web.reactive.server.MetricsWebFilter [DefaultWebFilterChain]
product | |_ checkpoint ⇢ HTTP GET "/product/spec/template/posts" [ExceptionHandlingWebHandler]
product | Stack trace:
product | Caused by: java.net.ConnectException: finishConnect(..) failed: Connection refused
product | at io.netty.channel.unix.Errors.throwConnectException(Errors.java:124) ~[netty-transport-native-unix-common-4.1.51.Final.jar!/:4.1.51.Final]
答案1
得分: 3
不，我们不能直接通过localhost进行调用，这里的术语是“容器调用容器”，因此我们应该通过容器名称一起进行调用。
- 将docker-compose更改如下：
order-service:
build: docker/order-service
container_name: order-service
ports:
- 8082:8080
- 然后，在客户端服务中，我们只需像下面这样定义主机：
private String hostname = "http://order-service:8080/order-service/welcome";
您可以看到，当我们通过浏览器（真实客户端）调用订单服务时，我们通过扩展端口（8082）进行调用，但在容器调用容器的情况下，我们应该通过容器的名称和端口（8080）进行调用。
英文:
No, we can not call direct by localhost, the term here is "container call container", so, we should call together by container name.
- change the docker-compose like this:
> order-service:
> build: docker/order-service
> container_name: order-service
> ports:
> - 8082:8080
- And then, in the client service, we just define host like below:
> private String hostname =
> "http://order-service:8080/order-service/welcome";
You can see, when we call order service by browser (real client), we call throught extend port (8082), but in case container call container, we should call by its containers name and it`s port (8080).
答案2
得分: 1
拒绝连接意味着在地址:端口上没有服务器正在监听。您可以使用 netstat -tulpen 命令检查哪些地址上打开了哪些端口。
英文:
Connection refused means that there was no server listening on the address:port. You can check with netstat -tulpen what ports are open on which address.
答案3
得分: 0
我也遇到了相同的问题，在运行我的应用程序时，但我发现问题是在应用程序的 application.yml 中有两个同名的微服务。请确认您定义的所有微服务都具有唯一的名称和端口。
英文:
I also had the same issue, while running my application, but I found out that the issue was that I had two micro-services that were having the same name in the application.yml.
Kindly confirm that all the micro-services you have defined have unique name and ports.
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