Question

我创建了一个Spring Boot项目，在其中我使用restTemplate调用rest服务。但是我得到java.net.ConnectException: Connection timed out。

我试图增加超时时间，但是没有用，所以我认为这不是问题。
我尝试在httpclient中添加pom.xml依赖项，但再次失败。
我还尝试使用postForObject和getForEntity来代替交换功能，以便测试该项目中的其他调用，但得到的响应是相同的。
也许问题与spring-boot 2.2.0版本有关，因为来自2.1.8版本的另一个项目的相同调用可以工作。但是，我想在该项目中使用较新的版本。在google搜索中，我没有发现任何版本差异可以调用restTemplate。

我的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.0.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>test</groupId>
<artifactId>test</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>test</name>
<description>test</description>

<properties>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

我的RestController

import org.springframework.http.*;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
public class TestMe {

@GetMapping(path="/testMe", produces = MediaType.APPLICATION_JSON_VALUE)
public String testMe(){
    RestTemplate restTemplate = new RestTemplate();
    String fooResourceUrl = "https:....";

    HttpHeaders headers = new HttpHeaders();
    headers.add("Authorization", "Bearer ****");
    HttpEntity entity = new HttpEntity(headers);

    ResponseEntity<String> response = restTemplate.exchange(fooResourceUrl, HttpMethod.GET, entity, String.class);

    return response.toString();
}
}

还有StackTrace

2019-10-22 10：26：28,997错误[http-nio-3268-exec-1] org.apache.juli.logging.DirectJDKLog：Servlet [dispatcherServlet]的Servlet.service（）在路径为[ / ...]引发异常[请求处理失败；嵌套的异常是org.springframework.web.client.ResourceAccessException：GET请求“ https://eacrm--eadev1.my.salesforce.com/services/data/v46.0/query/”上的I / O错误：连接超时：connect;嵌套的异常是java.net.ConnectException：连接超时：具有根源的connect] java.net.ConnectException：连接超时：connect 在java.net.DualStackPlainSocketImpl.connect0（本机方法）在java.net.DualStackPlainSocketImpl.socketConnect（DualStackPlainSocketImpl.java:79）在java.net.AbstractPlainSocketImpl.doConnect（AbstractPlainSocketImpl.java:350）在java.net.AbstractPlainSocketImpl.connectToAddress（AbstractPlainSocketImpl.java:206）在java.net.AbstractPlainSocketImpl.connect（AbstractPlainSocketImpl.java:188）在java.net.PlainSocketImpl.connect（PlainSocketImpl.java:172）在java.net.SocksSocketImpl.connect（SocksSocketImpl.java:392）在java.net.Socket.connect（Socket.java:589）在sun.security.ssl.SSLSocketImpl.connect（SSLSocketImpl.java:666）在sun.security.ssl.BaseSSLSocketImpl.connect（BaseSSLSocketImpl.java:173）在sun.net.NetworkClient.doConnect（NetworkClient.java:180）在sun.net.www.http.HttpClient.openServer（HttpClient.java:463）在sun.net.www.http.HttpClient.openServer（HttpClient.java:558）在sun.net.www.protocol.https.HttpsClient。（HttpsClient.java:264）在sun.net.www.protocol.https.HttpsClient.New（HttpsClient.java:367）在sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient（AbstractDelegateHttpsURLConnection.java:191）在sun.net.www.protocol.http.HttpURLConnection.plainConnect0（HttpURLConnection.java:1156）在sun.net.www.protocol.http.HttpURLConnection.plainConnect（HttpURLConnection.java:1050）在sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect（AbstractDelegateHttpsURLConnection.java:177）在sun.net.www.protocol.https.HttpsURLConnectionImpl.connect（HttpsURLConnectionImpl.java:162）在org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal（SimpleBufferingClientHttpRequest.java:76）在org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal（AbstractBufferingClientHttpRequest.java:48）在org.springframework.http.client.AbstractClientHttpRequest.execute（AbstractClientHttpRequest.java:53）在org.springframework.web.client.RestTemplate.doExecute（RestTemplate.java:742）在org.springframework.web.client.RestTemplate.execute（RestTemplate.java:677）在org.springframework.web.client.RestTemplate.exchange（RestTemplate.java:586）在test.api.TestMe.testMe（TestMe.java:20）在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:498）在org.springframework.web.method.support.InvocableHandlerMethod.doInvoke（InvocableHandlerMethod.java:190）在org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest（InvocableHandlerMethod.java:138）在org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle（ServletInvocableHandlerMethod.java:106）在org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod（RequestMappingHandlerAdapter.java:888）在org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal（RequestMappingHandlerAdapter.java:793）在org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle（AbstractHandlerMethodAdapter.java:87）在org.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:1040）在org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:943）在org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:1006）在org.springframework.web.servlet.FrameworkServlet.doGet（FrameworkServlet.java:898）在javax.servlet.http.HttpServlet.service（HttpServlet.java:634）在org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:883）在javax.servlet.http.HttpServlet.service（HttpServlet.java:741）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:231）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:53）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.web.filter.RequestContextFilter.doFilterInternal（RequestContextFilter.java:100）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:119）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.web.filter.FormContentFilter.doFilterInternal（FormContentFilter.java:93）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:119）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal（CharacterEncodingFilter.java:201）在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:119）在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:202）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:96）在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:526）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:139）在org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:92）在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:74）在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:343）在org.apache.coyote.http11.Http11Processor.service（Http11Processor.java:408）在org.apache.coyote.AbstractProcessorLight.process（AbstractProcessorLight.java:66）在org.apache.coyote.AbstractProtocol $ ConnectionHandler.process（AbstractProtocol.java:861）在org.apache.tomcat.util.net.NioEndpoint $ SocketProcessor.doRun（NioEndpoint.java:1579）在org.apache.tomcat.util.net.SocketProcessorBase.run（SocketProcessorBase.java:49）在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）在java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:624）在org.apache.tomcat.util.threads.TaskThread $ WrappingRunnable.run（TaskThread.java:61）在java.lang.Thread.run（Thread.java:748）

预先感谢

restTemplate调用返回连接超时

0 个答案: