struts2断网出现的错误java.net.UnknownHostException: struts.apache.org struts2断网出现的错误java.net.UnknownHo

今天在用struts2做项目的时候启动服务的时候突然就出错了.当时就郁闷了。因为从来没遇到过这样的错误.后来当时没网也不了了之了。

晚上回到家的时候想搜索错误结果启动服务的时候又不报错了.后来想了老半天是不是因为联网了的原因，果然我给网线拔了再次重启发布然后重启就又报错了。然后给错误记下来了联网后百度就搞定了。。

搜索出来的结果是。因为我struts2导入到dtd版本是2.3的。而我的struts2-core.jar包里面没有2.3的dtd。只有2.0
2.1和2.1.7的版本。我给2.3改成2.1后运行就可以了

以下是错误代码:

y原文:http://www.zhjie.net/struts2-disconnection-error-occurred-java-net-unknownhostexceptionstruts-apache-org.htm

Caused by: java.net.UnknownHostException:
struts.apache.org

Method: connect

Line: 177 – java/net/PlainSocketImpl.java:177:-1

at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:431)

at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)

at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)

at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)

at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)

at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)

at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4072)

at org.apache.catalina.core.StandardContext.start(StandardContext.java:4726)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)

at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1079)

at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1002)

at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:506)

at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)

at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)

at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)

at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)

at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)

at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)

at org.apache.catalina.core.StandardService.start(StandardService.java:525)

at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)

at org.apache.catalina.startup.Catalina.start(Catalina.java:595)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

Caused by: Unable to load configuration. – Class: java.net.PlainSocketImpl

File: PlainSocketImpl.java

Method: connect

Line: 177 – java/net/PlainSocketImpl.java:177:-1

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)

at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)

at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)

… 29 more

Caused by: Unable to load file:/D:/Develop/Tomcat6.0.14/webapps/ssh-crm/WEB-INF/classes/struts.xml
– Class: java.net.PlainSocketImpl

File: PlainSocketImpl.java

Method: connect

Line: 177 – java/net/PlainSocketImpl.java:177:-1

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:898)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadDocuments(XmlConfigurationProvider.java:143)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.init(XmlConfigurationProvider.java:110)

at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:168)

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)

… 31 more

Caused by: struts.apache.org – Class: java.net.PlainSocketImpl

File: PlainSocketImpl.java

Method: connect

Line: 177 – java/net/PlainSocketImpl.java:177:-1

at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:115)

at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:893)

… 35 more

Caused by: java.net.UnknownHostException:
struts.apache.org

at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)

at java.net.Socket.connect(Socket.java:519)

at java.net.Socket.connect(Socket.java:469)

at sun.net.NetworkClient.doConnect(NetworkClient.java:163)

at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)

at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)

at sun.net.www.http.HttpClient.<init>(HttpClient.java:233)

at sun.net.www.http.HttpClient.New(HttpClient.java:306)

at sun.net.www.http.HttpClient.New(HttpClient.java:323)

at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:852)

at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:793)

at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:718)

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1041)

at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:677)

at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(XMLEntityManager.java:1315)

at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(XMLEntityManager.java:1282)

at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(XMLDTDScannerImpl.java:283)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(XMLDocumentScannerImpl.java:1192)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(XMLDocumentScannerImpl.java:1089)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:1002)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)

at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)

at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)

at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)

at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)

at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)

at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)

at javax.xml.parsers.SAXParser.parse(SAXParser.java:395)

at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:113)

… 36 more