Question

java.lang.IllegalArgumentException

大家好，请问下，这是什么异常，改如何解决
java.lang.IllegalArgumentException: Invalid <url-pattern> HelloServlet in servlet mapping
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2725)
at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2751)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1060)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1561)
at org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:351)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:1034)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:260)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4119)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1089)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1187)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:292)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1305)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1569)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1558)
at java.lang.Thread.run(Unknown Source)
2009-9-24 17:39:38 org.apache.catalina.startup.ContextConfig applicationWebConfig
严重: Occurred at line 17 column 21
2009-9-24 17:39:38 org.apache.catalina.startup.ContextConfig start
严重: Marking this application unavailable due to previous error(s)
2009-9-24 17:39:38 org.apache.catalina.core.StandardContext start
严重: Error getConfigured
2009-9-24 17:39:38 org.apache.catalina.core.StandardContext start
严重: Context [/store] startup failed due to previous errors

Answer 1

简而言之，通常情况可能是tomcat版本与JDK版本不协调。
像我的tomcat6，用了jdk8，结果报这个错。JDK改成6就好了

Answer 2

好像是<url-pattern></url-pattern>中的参数异常，检查一下是否有非法字符。

Answer 3

方法传递了一个不合法或不正确的参数。

Answer 4

参数异常，你的url应该有问题

Answer 5

IllegalArgumentException是illegal参数异常