严重: Parse error in application web.xml file at file:

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#严重: Parse error in application web.

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本文详细解析了在Tomcat上部署项目时遇到的web.xml配置错误，特别是关于<servlet-class>标签未正确闭合的问题，并提供了具体的解决方案。

问题发生两种情况:

自己部署到Tomcat上的工程web.xml的问题,
解决办法:
找到你自己的tomcat 路径下apache-tomcat-8.0.30\webapps\自己的工程\WEB-INF下面的web.xml

在这里<servlet-class>com.itszt.LoginService</servlet-class>后面的<servlet-class>加上/,就可以了

其他项目部署错误,或者自己手动搭建到tomca上的小项目出现类似的错误也影响你正在启动的项目,但都是因为你servlet-class没加/,别问我是怎么知道的QAQ

错误信息:
. 严重: Parse Fatal Error at line 17 column 5: 元素类型 “servlet-class” 必须由匹配的结束标记 “” 终止。严重: Parse Fatal Error at line 17 column 5: 元素类型 “servlet-class” 必须由匹配的结束标记 “” 终止。
org.xml.sax.SAXParseException; systemId: file:/D:/folder/java_Tomcat/apache-tomcat-8.0.30/webapps/Login_Form/WEB-INF/web.xml; lineNumber: 17; columnNumber: 5; 元素类型 “servlet-class” 必须由匹配的结束标记 “” 终止。
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:400)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1472)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1749)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl $F r a g m e n t C o n t e n t D r i v e r . n e x t (X M L D o c u m e n t F r a g m e n t S c a n n e r I m p l . j a v a : 2967) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . i m p l . X M L D o c u m e n t S c a n n e r I m p l . n e x t (X M L D o c u m e n t S c a n n e r I m p l . j a v a : 602) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . i m p l . X M L D o c u m e n t F r a g m e n t S c a n n e r I m p l . s c a n D o c u m e n t (X M L D o c u m e n t F r a g m e n t S c a n n e r I m p l . j a v a : 505) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . p a r s e r s . X M L 11 C o n f i g u r a t i o n . p a r s e (X M L 11 C o n f i g u r a t i o n . j a v a : 841) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . p a r s e r s . X M L 11 C o n f i g u r a t i o n . p a r s e (X M L 11 C o n f i g u r a t i o n . j a v a : 770) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . p a r s e r s . X M L P a r s e r . p a r s e (X M L P a r s e r . j a v a : 141) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . p a r s e r s . A b s t r a c t S A X P a r s e r . p a r s e (A b s t r a c t S A X P a r s e r . j a v a : 1213) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . j a x p . S A X P a r s e r I m p l$ JAXPSAXParser.parse(SAXParserImpl.java:643)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1451)
at org.apache.tomcat.util.descriptor.web.WebXmlParser.parseWebXml(WebXmlParser.java:120)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1107)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:771)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5154)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase $S t a r t C h i l d . c a l l (C o n t a i n e r B a s e . j a v a : 1408) a t o r g . a p a c h e . c a t a l i n a . c o r e . C o n t a i n e r B a s e$ StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

十二月 27, 2018 9:46:09 下午 org.apache.tomcat.util.descriptor.web.WebXmlParser parseWebXml
严重: Parse error in application web.xml file at file:/D:/folder/java_Tomcat/apache-tomcat-8.0.30/webapps/Login_Form/WEB-INF/web.xml
org.xml.sax.SAXParseException; systemId: file:/D:/folder/java_Tomcat/apache-tomcat-8.0.30/webapps/Login_Form/WEB-INF/web.xml; lineNumber: 17; columnNumber: 5; 元素类型 “servlet-class” 必须由匹配的结束标记 “” 终止。
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:400)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1472)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1749)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl $F r a g m e n t C o n t e n t D r i v e r . n e x t (X M L D o c u m e n t F r a g m e n t S c a n n e r I m p l . j a v a : 2967) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . i m p l . X M L D o c u m e n t S c a n n e r I m p l . n e x t (X M L D o c u m e n t S c a n n e r I m p l . j a v a : 602) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . i m p l . X M L D o c u m e n t F r a g m e n t S c a n n e r I m p l . s c a n D o c u m e n t (X M L D o c u m e n t F r a g m e n t S c a n n e r I m p l . j a v a : 505) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . p a r s e r s . X M L 11 C o n f i g u r a t i o n . p a r s e (X M L 11 C o n f i g u r a t i o n . j a v a : 841) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . p a r s e r s . X M L 11 C o n f i g u r a t i o n . p a r s e (X M L 11 C o n f i g u r a t i o n . j a v a : 770) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . p a r s e r s . X M L P a r s e r . p a r s e (X M L P a r s e r . j a v a : 141) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . p a r s e r s . A b s t r a c t S A X P a r s e r . p a r s e (A b s t r a c t S A X P a r s e r . j a v a : 1213) a t c o m . s u n . o r g . a p a c h e . x e r c e s . i n t e r n a l . j a x p . S A X P a r s e r I m p l$ JAXPSAXParser.parse(SAXParserImpl.java:643)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1451)
at org.apache.tomcat.util.descriptor.web.WebXmlParser.parseWebXml(WebXmlParser.java:120)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1107)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:771)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5154)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase $S t a r t C h i l d . c a l l (C o n t a i n e r B a s e . j a v a : 1408) a t o r g . a p a c h e . c a t a l i n a . c o r e . C o n t a i n e r B a s e$ StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)