我们使用 QuotaGuard 代理来连接外部 API。
最近我们做了 Spring Boot 版本更新。
我们应用程序的技术配置。
Spring Boot版本更新之前。
Java 8
春季启动 2.7
Httt客户端4.5
Spring Boot版本更新后。
Java 17
Spring Boot 3.0
Htttclient5 5.2.1
但是迁移后我们无法连接到 API。我们收到以下错误消息。
Nov 29 02:57:08 app/web.1 org.springframework.web.client.ResourceAccessException: I/O error on POST request for "[https://test.com/postInfo]": [test.com:443] failed to respond
Nov 29 02:57:08 app/web.1 at org.springframework.web.client.RestTemplate.createResourceAccessException(RestTemplate.java:888)
Nov 29 02:57:08 app/web.1 at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:868)
Nov 29 02:57:08 app/web.1 at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:764)
Nov 29 02:57:08 app/web.1 at org.springframework.web.client.RestTemplate.postForEntity(RestTemplate.java:512)
Nov 29 02:57:08 app/web.1 at jp.co.sevenandinm.service.WinnerExportServiceImpl$3.doWithRetry(WinnerExportServiceImpl.java:381)
Nov 29 02:57:08 app/web.1 at jp.co.sevenandinm.service.WinnerExportServiceImpl$3.doWithRetry(WinnerExportServiceImpl.java:376)
Nov 29 02:57:08 app/web.1 at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:286)
Nov 29 02:57:08 app/web.1 at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:179)
Nov 29 02:57:08 app/web.1 at jp.co.sevenandinm.service.WinnerExportServiceImpl.execute(WinnerExportServiceImpl.java:376)
Nov 29 02:57:08 app/web.1 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Nov 29 02:57:08 app/web.1 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
Nov 29 02:57:08 app/web.1 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
Nov 29 02:57:08 app/web.1 at java.base/java.lang.reflect.Method.invoke(Method.java:568)
Nov 29 02:57:08 app/web.1 at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343)
Nov 29 02:57:08 app/web.1 at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:196)
Nov 29 02:57:08 app/web.1 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
Nov 29 02:57:08 app/web.1 at org.springframework.aop.interceptor.AsyncExecutionInterceptor.lambda$invoke$0(AsyncExecutionInterceptor.java:115)
Nov 29 02:57:08 app/web.1 at org.springframework.util.concurrent.FutureUtils.lambda$toSupplier$0(FutureUtils.java:74)
Nov 29 02:57:08 app/web.1 at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768)
Nov 29 02:57:08 app/web.1 at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
Nov 29 02:57:08 app/web.1 at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
Nov 29 02:57:08 app/web.1 at java.base/java.lang.Thread.run(Thread.java:840)
Nov 29 02:57:08 app/web.1 Caused by: org.apache.hc.core5.http.NoHttpResponseException: [test.com:443] failed to respond
Nov 29 02:57:08 app/web.1 at org.apache.hc.core5.http.impl.io.DefaultHttpResponseParser.createConnectionClosedException(DefaultHttpResponseParser.java:87)
Nov 29 02:57:08 app/web.1 at org.apache.hc.core5.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:243)
Nov 29 02:57:08 app/web.1 at org.apache.hc.core5.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:53)
Nov 29 02:57:08 app/web.1 at org.apache.hc.core5.http.impl.io.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:298)
Nov 29 02:57:08 app/web.1 at org.apache.hc.core5.http.impl.io.HttpRequestExecutor.execute(HttpRequestExecutor.java:175)
Nov 29 02:57:08 app/web.1 at org.apache.hc.core5.http.impl.io.HttpRequestExecutor.execute(HttpRequestExecutor.java:218)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager$InternalConnectionEndpoint.execute(PoolingHttpClientConnectionManager.java:712)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.InternalExecRuntime.execute(InternalExecRuntime.java:216)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ConnectExec.createTunnelToTarget(ConnectExec.java:233)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ConnectExec.execute(ConnectExec.java:151)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ProtocolExec.execute(ProtocolExec.java:192)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.HttpRequestRetryExec.execute(HttpRequestRetryExec.java:96)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ContentCompressionExec.execute(ContentCompressionExec.java:152)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.RedirectExec.execute(RedirectExec.java:115)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute(InternalHttpClient.java:170)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:106)
Nov 29 02:57:08 app/web.1 at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:55)
Nov 29 02:57:08 app/web.1 at org.springframework.http.client.HttpComponentsClientHttpRequest.executeInternal(HttpComponentsClientHttpRequest.java:93)
Nov 29 02:57:08 app/web.1 at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
Nov 29 02:57:08 app/web.1 at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:66)
Nov 29 02:57:08 app/web.1 at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:862)
Nov 29 02:57:08 app/web.1 ... 20 more
这是我们正在使用的示例代码，
URL proxy;
proxy = new URL(proxyUrl);
String userInfo = proxy.getUserInfo();
String user = userInfo.substring(0, userInfo.indexOf(':'));
String password = userInfo.substring(userInfo.indexOf(':') + 1);
final CredentialsProvider credsProvider = new BasicCredentialsProvider();
Credentials credentials = new UsernamePasswordCredentials(user, password.toCharArray());
((BasicCredentialsProvider) credsProvider).setCredentials(new AuthScope(proxy.getHost(), proxy.getPort()), credentials);
HttpHost p = new HttpHost(proxy.getHost(), proxy.getPort());
HttpClient httpClient = HttpClients.custom().setProxy(p).setDefaultCredentialsProvider(credsProvider).build();
final HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
factory.setHttpClient(httpClient);
RestTemplate restTemplate = new RestTemplate(factory);
ResponseEntity<ResponseData> response = restTemplate.postForEntity(APIURL, req, ResponseData.class);
ResponseData responseBody = response.getBody();
但是，如果我们在命令行上通过 CURL 使用配额保护代理请求 API，则会成功通过。
另外，如果我们使用 Postman 请求 API，它会成功通过。
最近更新 SpringBoot 3.0 和 Java 17 版本后，有人遇到使用 proxyserver 连接 API 的问题吗？
任何人都可以提供如何处理或解决此问题的任何指导吗？我们尝试了几种方法和示例代码，但都不起作用。
查看堆栈跟踪，似乎无法连接到端点。
我看到你也在使用代理。
也许从 httpclient4 到 httpclient5 后需要重写一些 api 更改（我已经发现一些方法从 v4 保留到 v5，但在 v5 中是无操作的）
setProxy似乎也已被弃用。
尝试以这种方式设置代理：
HttpHost proxy = new HttpHost("localhost", 8090);
DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
HttpClient httpclient = HttpClients.custom()
.setRoutePlanner(routePlanner)
.build();
您还可以查看带有身份验证信息的完整示例此处