Caused by: java.net.UnknownHostException: www.mybatis.org

1、错误描述

org.activiti.engine.ActivitiException: Error while building ibatis SqlSessionFactory: Error creating document instance.  Cause: java.net.UnknownHostException: www.mybatis.orgat org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initSqlSessionFactory(ProcessEngineConfigurationImpl.java:895)at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.init(ProcessEngineConfigurationImpl.java:620)at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.buildProcessEngine(ProcessEngineConfigurationImpl.java:590)at org.activiti.engine.impl.test.TestHelper.getProcessEngine(TestHelper.java:229)at org.activiti.engine.test.ActivitiRule.initializeProcessEngine(ActivitiRule.java:237)at org.activiti.engine.test.ActivitiRule.starting(ActivitiRule.java:205)at org.activiti.engine.test.ActivitiRule.startingQuietly(ActivitiRule.java:171)at org.activiti.engine.test.ActivitiRule.access$000(ActivitiRule.java:86)at org.activiti.engine.test.ActivitiRule$1.evaluate(ActivitiRule.java:124)at org.junit.rules.RunRules.evaluate(RunRules.java:20)at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)at org.junit.runners.ParentRunner.run(ParentRunner.java:363)at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)Caused by: org.apache.ibatis.builder.BuilderException: Error creating document instance.  Cause: java.net.UnknownHostException: www.mybatis.orgat org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:136)at org.apache.ibatis.parsing.XPathParser.<init>(XPathParser.java:32)at org.apache.ibatis.builder.xml.XMLConfigBuilder.<init>(XMLConfigBuilder.java:47)at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initMybatisConfiguration(ProcessEngineConfigurationImpl.java:903)at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initSqlSessionFactory(ProcessEngineConfigurationImpl.java:891)... 24 moreCaused by: java.net.UnknownHostException: www.mybatis.orgat java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)at java.net.Socket.connect(Socket.java:579)at java.net.Socket.connect(Socket.java:528)at sun.net.NetworkClient.doConnect(NetworkClient.java:180)at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)at sun.net.www.http.HttpClient.New(HttpClient.java:308)at sun.net.www.http.HttpClient.New(HttpClient.java:326)at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)at sun.net.www.protocol.http.HttpURLConnection.followRedirect(HttpURLConnection.java:2398)at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1557)at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:637)at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(XMLEntityManager.java:1290)at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(XMLEntityManager.java:1257)at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(XMLDTDScannerImpl.java:263)at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(XMLDocumentScannerImpl.java:1164)at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(XMLDocumentScannerImpl.java:1050)at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:964)at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)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:848)at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:347)at org.apache.ibatis.parsing.XPathParser.createDocument(XPathParser.java:134)... 28 morejava.lang.NullPointerExceptionat org.activiti.designer.test.ProcessTestMyProcess.startProcess(ProcessTestMyProcess.java:28)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:606)at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)at org.activiti.engine.test.ActivitiRule$1.evaluate(ActivitiRule.java:126)at org.junit.rules.RunRules.evaluate(RunRules.java:20)at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)at org.junit.runners.ParentRunner.run(ParentRunner.java:363)at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)org.activiti.engine.ActivitiException: Programmatic error: could not instantiate org.activiti.designer.test.ProcessTestMyProcessat org.activiti.engine.test.ActivitiRule.finished(ActivitiRule.java:269)at org.activiti.engine.test.ActivitiRule.finishedQuietly(ActivitiRule.java:179)at org.activiti.engine.test.ActivitiRule.access$400(ActivitiRule.java:86)at org.activiti.engine.test.ActivitiRule$1.evaluate(ActivitiRule.java:135)at org.junit.rules.RunRules.evaluate(RunRules.java:20)at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)at org.junit.runners.ParentRunner.run(ParentRunner.java:363)at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)Caused by: java.lang.ClassNotFoundException: org/activiti/designer/test/ProcessTestMyProcessat java.lang.Class.forName0(Native Method)at java.lang.Class.forName(Class.java:190)at org.activiti.engine.test.ActivitiRule.finished(ActivitiRule.java:266)... 19 more

2、错误原因

        由错误提示，我查找了些资料，网上说缺少mybatis-3-config.dtd

3、解决办法

      于是下载mybatis-3-config.dtd，将其放到resource下

<?xml version="1.0" encoding="UTF-8" ?><!--       Copyright 2009-2016 the original author or authors.       Licensed under the Apache License, Version 2.0 (the "License");       you may not use this file except in compliance with the License.       You may obtain a copy of the License at          http://www.apache.org/licenses/LICENSE-2.0       Unless required by applicable law or agreed to in writing, software       distributed under the License is distributed on an "AS IS" BASIS,       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.       See the License for the specific language governing permissions and       limitations under the License.--><!ELEMENT configuration (properties?, settings?, typeAliases?, typeHandlers?, objectFactory?, objectWrapperFactory?, reflectorFactory?, plugins?, environments?, databaseIdProvider?, mappers?)><!ELEMENT databaseIdProvider (property*)><!ATTLIST databaseIdProvidertype CDATA #REQUIRED><!ELEMENT properties (property*)><!ATTLIST propertiesresource CDATA #IMPLIEDurl CDATA #IMPLIED><!ELEMENT property EMPTY><!ATTLIST propertyname CDATA #REQUIREDvalue CDATA #REQUIRED><!ELEMENT settings (setting+)><!ELEMENT setting EMPTY><!ATTLIST settingname CDATA #REQUIREDvalue CDATA #REQUIRED><!ELEMENT typeAliases (typeAlias*,package*)><!ELEMENT typeAlias EMPTY><!ATTLIST typeAliastype CDATA #REQUIREDalias CDATA #IMPLIED><!ELEMENT typeHandlers (typeHandler*,package*)><!ELEMENT typeHandler EMPTY><!ATTLIST typeHandlerjavaType CDATA #IMPLIEDjdbcType CDATA #IMPLIEDhandler CDATA #REQUIRED><!ELEMENT objectFactory (property*)><!ATTLIST objectFactorytype CDATA #REQUIRED><!ELEMENT objectWrapperFactory (property*)><!ATTLIST objectWrapperFactorytype CDATA #REQUIRED><!ELEMENT reflectorFactory EMPTY><!ATTLIST reflectorFactorytype CDATA #REQUIRED><!ELEMENT plugins (plugin+)><!ELEMENT plugin (property*)><!ATTLIST plugininterceptor CDATA #REQUIRED><!ELEMENT environments (environment+)><!ATTLIST environmentsdefault CDATA #REQUIRED><!ELEMENT environment (transactionManager,dataSource)><!ATTLIST environmentid CDATA #REQUIRED><!ELEMENT transactionManager (property*)><!ATTLIST transactionManagertype CDATA #REQUIRED><!ELEMENT dataSource (property*)><!ATTLIST dataSourcetype CDATA #REQUIRED><!ELEMENT mappers (mapper*,package*)><!ELEMENT mapper EMPTY><!ATTLIST mapperresource CDATA #IMPLIEDurl CDATA #IMPLIEDclass CDATA #IMPLIED><!ELEMENT package EMPTY><!ATTLIST packagename CDATA #REQUIRED>