tomcat7中在项目META-INF中自己写数据库连接池报错解决方法

java.lang.NullPointerException
    at org.apache.catalina.core.StandardContext.getObjectNameKeyProperties(StandardContext.java:5551)
    at org.apache.catalina.core.StandardContext.setNamingResources(StandardContext.java:1757)
    at org.apache.catalina.core.StandardContext.getNamingResources(StandardContext.java:1735)
    at org.apache.catalina.startup.SetNextNamingRule.end(SetNextNamingRule.java:99)
    at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1058)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
    at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:180)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1343)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2755)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
    at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1544)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:515)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:551)
    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.load(Bootstrap.java:260)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
26-set-2010 2.02.25 org.apache.catalina.startup.Catalina load
AVVERTENZA: Catalina.start using conf/server.xml: 
java.lang.NullPointerException
    at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2688)
    at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2714)
    at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1061)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
    at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:180)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1343)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2755)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
    at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1544)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:515)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:551)
    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.load(Bootstrap.java:260)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: java.lang.NullPointerException
    at org.apache.catalina.core.StandardContext.getObjectNameKeyProperties(StandardContext.java:5551)
    at org.apache.catalina.core.StandardContext.setNamingResources(StandardContext.java:1757)
    at org.apache.catalina.core.StandardContext.getNamingResources(StandardContext.java:1735)
    at org.apache.catalina.startup.SetNextNamingRule.end(SetNextNamingRule.java:99)
    at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1058)
    ... 20 more
26-set-2010 2.02.25 org.apache.tomcat.util.digester.SetPropertiesRule begin
AVVERTENZA: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:DocSourcesProject' did not find a matching property.
26-set-2010 2.02.25 org.apache.tomcat.util.digester.Digester endElement
GRAVE: End event threw exception
java.lang.NullPointerException
    at org.apache.catalina.core.StandardContext.getObjectNameKeyProperties(StandardContext.java:5551)
    at org.apache.catalina.core.StandardContext.setNamingResources(StandardContext.java:1757)
    at org.apache.catalina.core.StandardContext.getNamingResources(StandardContext.java:1735)
    at org.apache.catalina.startup.SetNextNamingRule.end(SetNextNamingRule.java:99)
    at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1058)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
    at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:180)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1343)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2755)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
    at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1544)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:515)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:564)
    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:288)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:415)
26-set-2010 2.02.25 org.apache.catalina.startup.Catalina load
AVVERTENZA: Catalina.start using conf/server.xml: 
java.lang.NullPointerException
    at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2688)
    at org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:2714)
    at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1061)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
    at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:180)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1343)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2755)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
    at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1544)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:515)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:564)
    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:288)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:415)
Caused by: java.lang.NullPointerException
    at org.apache.catalina.core.StandardContext.getObjectNameKeyProperties(StandardContext.java:5551)
    at org.apache.catalina.core.StandardContext.setNamingResources(StandardContext.java:1757)
    at org.apache.catalina.core.StandardContext.getNamingResources(StandardContext.java:1735)
    at org.apache.catalina.startup.SetNextNamingRule.end(SetNextNamingRule.java:99)
    at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:1058)
    ... 20 more
26-set-2010 2.02.25 org.apache.catalina.startup.Catalina start
GRAVE: Cannot start server. Server instance is not configured.


我是在context.xml写的数据库连接池信息,一直报上边的错。
试了好多网上说的方法,基本都不行。解决方法:将tomcat7换成tomcat6,问题解决.......  
看了几个国外论坛说貌似是tomcat7的bug


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