[Java/Servlet]Read timed out 에러

Posted by 에브리플라워
2017.07.12 16:14 프로그래밍/Java
작업중에 아래와 같은 오류가 발생했다.

 org.apache.catalina.core.StandardWrapperValve invoke
심각: Servlet.service() for servlet [appServlet] in context with path [] threw exception [Request processing failed; nested exception is org.apache.tiles.definition.DefinitionsFactoryException: I/O Error reading definitions.] with root cause
java.net.SocketTimeoutException: Read timed out
       at java.net.SocketInputStream.socketRead0(Native Method)
       at java.net.SocketInputStream.read(Unknown Source)
       at java.net.SocketInputStream.read(Unknown Source)
       at java.io.BufferedInputStream.fill(Unknown Source)
       at java.io.BufferedInputStream.read1(Unknown Source)
       at java.io.BufferedInputStream.read(Unknown Source)
       at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
       at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
       at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
       at org.apache.commons.digester.Digester.createInputSourceFromURL(Digester.java:2072)
       at org.apache.commons.digester.Digester.resolveEntity(Digester.java:1725)
       at com.sun.org.apache.xerces.internal.util.EntityResolverWrapper.resolveEntity(Unknown Source)
       at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.resolveEntityAsPerStax(Unknown Source)
       at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(Unknown Source)
       at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(Unknown Source)
       at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
       at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
       at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
       at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
       at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
       at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
       at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
       at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
       at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
       at org.apache.commons.digester.Digester.parse(Digester.java:1887)
       at org.apache.tiles.definition.digester.DigesterDefinitionsReader.read(DigesterDefinitionsReader.java:325)
       at org.apache.tiles.definition.dao.BaseLocaleUrlDefinitionDAO.loadDefinitionsFromResource(BaseLocaleUrlDefinitionDAO.java:150)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.loadRawDefinitionsFromResources(CachingLocaleUrlDefinitionDAO.java:239)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.loadRawDefinitionsFromResources(CachingLocaleUrlDefinitionDAO.java:230)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.loadRawDefinitionsFromResources(CachingLocaleUrlDefinitionDAO.java:230)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.loadDefinitionsFromResources(CachingLocaleUrlDefinitionDAO.java:208)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.loadDefinitions(CachingLocaleUrlDefinitionDAO.java:197)
       at org.apache.tiles.definition.dao.ResolvingLocaleUrlDefinitionDAO.loadDefinitions(ResolvingLocaleUrlDefinitionDAO.java:68)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.checkAndloadDefinitions(CachingLocaleUrlDefinitionDAO.java:179)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.getDefinitions(CachingLocaleUrlDefinitionDAO.java:131)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.getDefinition(CachingLocaleUrlDefinitionDAO.java:105)
       at org.apache.tiles.definition.dao.CachingLocaleUrlDefinitionDAO.getDefinition(CachingLocaleUrlDefinitionDAO.java:49)
       at org.apache.tiles.definition.UnresolvingLocaleDefinitionsFactory.getDefinition(UnresolvingLocaleDefinitionsFactory.java:89)
       at org.apache.tiles.impl.BasicTilesContainer.getDefinition(BasicTilesContainer.java:286)
       at org.apache.tiles.impl.BasicTilesContainer.isValidDefinition(BasicTilesContainer.java:273)
       at org.apache.tiles.renderer.DefinitionRenderer.isRenderable(DefinitionRenderer.java:64)
       at org.springframework.web.servlet.view.tiles3.TilesView.checkResource(TilesView.java:116)
       at org.springframework.web.servlet.view.UrlBasedViewResolver.loadView(UrlBasedViewResolver.java:509)
       at org.springframework.web.servlet.view.AbstractCachingViewResolver.createView(AbstractCachingViewResolver.java:244)
       at org.springframework.web.servlet.view.UrlBasedViewResolver.createView(UrlBasedViewResolver.java:472)
       at org.springframework.web.servlet.view.AbstractCachingViewResolver.resolveViewName(AbstractCachingViewResolver.java:156)
       at org.springframework.web.servlet.DispatcherServlet.resolveViewName(DispatcherServlet.java:1321)
       at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1259)
       at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1037)
       at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:980)
       at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
       at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
       at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
       at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
       at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
       at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
       at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
       at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
       at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
       at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1115)
       at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
       at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
       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)

무슨 문제일까 고민 중에 SonarLint 덕에 원인을 확인했다.

내가 사용중인 컴퓨터에서 Apache Tiles 사이트로 접속도 안되고 더불어 dtd도 못불러오는 것이다.
나중을 위해서 offline으로 dtd를 로드하도록 수정해 두기로 했다. 
이런 경우는 처음으로 글로 남긴다.
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