Tomcat启动错误及解决方法

错误信息 :


1. org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (Network error IOException: Connection refused: connect)


2. Caused by: java.sql.SQLException: Network error IOException: Connection refused: connect


3. Caused by: java.net.ConnectException: Connection refused: connect


解决方法：数据库未开情况下运行tomcat出现的问题，把数据库打开就行了


错误信息 : WARN  [struts2.config.Settings] Settings: Could not parse struts.locale setting, substituting default VM locale


解决方法 : 在 struts.properties 文件中加上 struts.locale=en_utf-8


错误信息 : log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).


                 log4j:WARN Please initialize the log4j system properly.


解决方法 : 在WEB-INF/classes/路径下加上文件 log4j.properties 其参考内容如下


# Set root logger level to error


log4j.rootLogger=INFO, Console, File


###### Console appender definition #######


# All outputs currently set to be a ConsoleAppender.


log4j.appender.COnsole=org.apache.log4j.ConsoleAppender


log4j.appender.Console.layout=org.apache.log4j.PatternLayout


log4j.appender.Console.layout.COnversionPattern=%d{ABSOLUTE} %-5p [%c{3}] %m%n


#log4j.appender.Console.layout.COnversionPattern=%d{ABSOLUTE} %-5p [%c] %m%n


###### File appender definition #######


log4j.appender.File=org.apache.log4j.DailyRollingFileAppender


log4j.appender.File.File=spring.log


log4j.appender.File.Append=false


log4j.appender.File.layout=org.apache.log4j.PatternLayout


log4j.appender.File.layout.COnversionPattern=%d{ABSOLUTE} %-5p [%c] %m%n


###### Hibernate specific appender definition #######


#log4j.appender.file=org.apache.log4j.FileAppender


#log4j.appender.file.File=hibernate.log


#log4j.appender.file.layout=org.apache.log4j.PatternLayout


#log4j.appender.file.layout.COnversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n


###### Log level overrides #######


# Hibernate


log4j.logger.org.hibernate.cache.EhCacheProvider=warn


log4j.logger.org.hibernate.type=warn


# log4j.logger.org.hibernate.persister.collection=DEBUG


# Spring


log4j.logger.org.springframework=warn


# Axis/WSS4J


log4j.logger.org.apache.axis=info


log4j.logger.org.apache.ws=info


# MyFaces


log4j.logger.org.apache.myfaces.util.DebugUtils=info


log4j.logger.org.apache.myfaces.el.VariableResolverImpl=error


log4j.logger.org.apache.myfaces.application.jsp.JspViewHandlerImpl=error


# log prepared statement cache activity ###


log4j.logger.org.hibernate.ps.PreparedStatementCache=info


###### Examples #######


# To dump performance results on VM termination


#log4j.logger.performance.summary.vm=debug


# To dump performance stats on every call


#log4j.logger.performance.summary.method=debug


# Examples of activating performance logging on various beans


#log4j.logger.performance.nodeDaoService=debug


#log4j.logger.performance.dbNodeService=debug


#log4j.logger.performance.indexingNodeService=debug


#log4j.logger.performance.indexerCompOnent=debug


错误信息 : WARN  [ehcache.config.ConfigurationFactory] No configuration found. Configuring ehcache from ehcache-failsafe.xml


解决方法 : 在WEB-INF/classes/路径下加上文件 ehcache.xml 其参考内容如下










    maxElementsInMemory="10000"


    eternal="false"


    timeToIdleSecOnds="10000"


    timeToLiveSecOnds="10000"


    overflowToDisk="true"


/>


 

    maxElementsInMemory="10000"


    eternal="false"


    timeToIdleSecOnds="10000"


    timeToLiveSecOnds="10000"


    overflowToDisk="true"


/>





错误信息：java.lang.NoSuchMethodError:

org.

objectweb

.asm.ClassVisitor.visit

(IILjava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)V


at net.sf.cglib.core.ClassEmitter.begin_class(ClassEmitter.java:77)

解决方法：Spring 和 Hibernate 共用的一些 jar 文件发生了版本冲突, 删除

WEB

-INF/lib/asm-2.2.3.jar 然后重启 Tomcat.

错误信息：javax.servlet.jsp.JspException: Invalid argument looking up property usersVO.account of bean loginForm


解决方法：Form中的usersVO没被实例化，在reset方法中new一下就OK了


错误信息：org.apache.jasper.JasperException: Failed to load or instantiate TagLibraryValidator class: org.apache.taglibs.standard.tlv.JstlCoreTLV


解决方法：加入standard.jar，重启tomcat


错误信息：严重: Exception loading sessions from persistent storage 


解决方法：tomcat安装目录\work\Catalina\localhost\{webAppName}\SESSIONS.ser，删除此文件

Tomcat启动错误及解决方法