twitter4j API - 拒絕連接

Question

我正在運行一個代碼，讓我的Web應用程序代表用戶發佈狀態更新。該代碼在本地工作得很好，但是當我將它放在Windows Server 2012 R2上時，出現ConnectionException。

15-Sep-2015 18:40:59.128 SEVERE [http-apr-8080-exec-12] socialmedia.TwitterService.updateTwitterStatus null 
Connection refused: connect 
Relevant discussions can be found on the Internet at: 
    http://www.google.co.jp/search?q=2fc5b7cb or 
    http://www.google.co.jp/search?q=0e20763e 
TwitterException{exceptionCode=[2fc5b7cb-0e20763e 2fc5b7cb-0e207614], statusCode=-1, message=null, code=-1, retryAfter=-1, rateLimitStatus=null, version=4.0.3} 
    at twitter4j.HttpClientImpl.handleRequest(HttpClientImpl.java:178) 
    at twitter4j.HttpClientBase.request(HttpClientBase.java:53) 
    at twitter4j.HttpClientBase.post(HttpClientBase.java:82) 
    at twitter4j.TwitterImpl.post(TwitterImpl.java:1598) 
    at twitter4j.TwitterImpl.updateStatus(TwitterImpl.java:205) 
    at de.materna.cmo.socialmedia.TwitterService.updateTwitterStatus(TwitterService.java:37) 
    at de.materna.cmo.socialmedia.TwitterService$Proxy$_$$_WeldClientProxy.updateTwitterStatus(Unknown Source) 
    at de.materna.cmo.campaignmanagment.CampaignService.deployTwitterContents(CampaignService.java:174) 
    at de.materna.cmo.campaignmanagment.CampaignService.deployCampaignContents(CampaignService.java:167) 
    at de.materna.cmo.campaignmanagment.CampaignService$Proxy$_$$_WeldClientProxy.deployCampaignContents(Unknown Source) 
    at de.materna.cmo.controller.CampaignController.releaseCampaign(CampaignController.java:184) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.el.parser.AstValue.invoke(AstValue.java:247) 
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:267) 
    at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:40) 
    at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50) 
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105) 
    at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:147) 
    at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88) 
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:813) 
    at javax.faces.component.UICommand.broadcast(UICommand.java:300) 
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790) 
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282) 
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81) 
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) 
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) 
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:654) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) 
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2503) 
    at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2492) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: java.net.ConnectException: Connection refused: connect 
    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) 
    at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) 
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) 
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) 
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source) 
    at java.net.PlainSocketImpl.connect(Unknown Source) 
    at java.net.Socket.connect(Unknown Source) 
    at sun.net.NetworkClient.doConnect(Unknown Source) 
    at sun.net.www.http.HttpClient.openServer(Unknown Source) 
    at sun.net.www.http.HttpClient$1.run(Unknown Source) 
    at sun.net.www.http.HttpClient$1.run(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at sun.net.www.http.HttpClient.privilegedOpenServer(Unknown Source) 
    at sun.net.www.http.HttpClient.openServer(Unknown Source) 
    at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source) 
    at sun.net.www.protocol.https.HttpsClient.New(Unknown Source) 
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source) 
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source) 
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source) 
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source) 
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(Unknown Source) 
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source) 
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(Unknown Source) 
    at twitter4j.HttpClientImpl.handleRequest(HttpClientImpl.java:136) 
    ... 50 more 

屬性配置如下

debug=true 
oauth.consumerKey=CONSUMER_KEY 
oauth.consumerSecret=CONSUMER_SECRET 
oauth.accessToken=ACCESS_TOKEN 
oauth.accessTokenSecret=ACCESS_TOKEN_SECRET 
http.proxyHost=proxy 
http.proxyPort=8080 

代碼：

@ApplicationScoped 
public class TwitterService { 
private Twitter twitter; 

@Inject 
private CmoTask task; 

@PostConstruct 
public void init() { 
    twitter = TwitterFactory.getSingleton(); 
} 

public void updateTwitterStatus(String status) { 
    try { 
     twitter.updateStatus(status); 
    } catch (TwitterException ex) { 
     Logger.getLogger(TwitterService.class.getName()).log(Level.SEVERE, null, ex); 
    } 

} 

}

奇怪的是我得到了它運行了幾個小時。我認爲這可能與我稍後在本地更改配置有關，而且Twitter不允許您在不同位置使用相同的配置。現在我做了一個更新，它又不起作用了。我試着註冊一個不同的webapp並在.properties文件中使用這些密鑰。不工作。

• 代理設置是否正確
• 防火牆是關閉服務器

我缺少什麼呢？

在此先感謝！

Answer 1

你在服務器上連接錯誤實際上取決於服務器上的訪問。 請檢查您是否能夠從chrome或任何其他網絡瀏覽器訪問https://api.twitter.com。