[求助]一个新手关于LOG4J连MYSQL数据库的问题,请高手解答,万分感谢!_MySQL, Oracle及数据库讨论区_Weblogic技术|Tuxedo技术|中间件技术|Oracle论坛|JAVA论坛|Linux/Unix技术|hadoop论坛

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主题： [求助]一个新手关于LOG4J连MYSQL数据库的问题,请高手解答,万分感谢!

snisn

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发表于：

2014-11-6 9:28:44 | [全部帖] [楼主帖]

楼主

我学习建立一个在线教育工程(eclipse+tomcat)的日志系统,我用的log4j记录日志,现在在把日志输到MYSQL数据库中出了问题.

我的LOG4J的properties配置如下:

###########################################
log4j.rootCategory=INFO,DatabaseApp
log4j.appender.DatabaseApp=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.DatabaseApp.URL=jdbc:mysql://localhost:3306/test
log4j.appender.DatabaseApp.driver=com.mysql.jdbc.Driver
log4j.appender.DatabaseApp.user=root
log4j.appender.DatabaseApp.password=
log4j.appender.DatabaseApp.layout=org.apache.log4j.PatternLayout
log4j.appender.DatabaseApp.layout.ConversionPattern=INSERT INTO log4j (createDate,thread,priority,category,message) values(getdate(),'%t','%-5p','%c','%m')
#############################################################

我装的是MYSQL5.0,从MYSQL网上下了最新的  mysql-connector-java-5.0.0-beta.zip

因为不知道把它配到哪,我在  CLASSPATH  放了F:\Java\mysql-connector-java-5.0.0-beta\mysql-connector-java-5.0.0-beta-bin.jar;F:\Java\mysql-connector-java-5.0.0-beta\debug\mysql-connector-java-5.0.0-beta-bin-g.jar;

并在eclipse下工程中添加外部的JAR包F:\Java\mysql-connector-java-5.0.0-beta\mysql-connector-java-5.0.0-beta-bin.jar;F:\Java\mysql-connector-java-5.0.0-beta\debug\mysql-connector-java-5.0.0-beta-bin-g.jar;

我在MYSQL也建好了名叫log4j的表

create  table  log4j
(            createDate  varchar(20),
thread  varchar(20),
priority  varchar(20),
caregory  varchar(20),
message  varchar(40),
primary  key(createDate)
)
-----------------------------------------------------------------

运行工程后出现错误

log4j:ERROR  Failed  to  load  driver
java.lang.ClassNotFoundException:  com.mysql.jdbc.Driver
at  java.net.URLClassLoader$1.run(Unknown  Source)
at  java.security.AccessController.doPrivileged(Native  Method)
at  java.net.URLClassLoader.findClass(Unknown  Source)
at  java.lang.ClassLoader.loadClass(Unknown  Source)
at  java.lang.ClassLoader.loadClass(Unknown  Source)
at  java.lang.ClassLoader.loadClassInternal(Unknown  Source)
at  java.lang.Class.forName0(Native  Method)
at  java.lang.Class.forName(Unknown  Source)
at  org.apache.log4j.jdbc.JDBCAppender.setDriver(JDBCAppender.java:351)
at  sun.reflect.NativeMethodAccessorImpl.invoke0(Native  Method)
at  sun.reflect.NativeMethodAccessorImpl.invoke(Unknown  Source)
at  sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown  Source)
at  java.lang.reflect.Method.invoke(Unknown  Source)
at  org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:205)
at  org.apache.log4j.config.PropertySetter.setProperty(PropertySetter.java:164)
at  org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:129)
at  org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:96)
at  org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:654)
at  org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:612)
at  org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:509)
at  org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:415)
at  org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:441)
at  org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:468)
at  org.apache.log4j.LogManager.<clinit>(LogManager.java:122)
at  org.apache.log4j.Logger.getLogger(Logger.java:104)
at  org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:229)
at  org.apache.commons.logging.impl.Log4JLogger.<init>(Log4JLogger.java:65)
at  sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native  Method)
at  sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown  Source)
at  sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown  Source)
at  java.lang.reflect.Constructor.newInstance(Unknown  Source)
at  org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
at  org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
at  org.apache.commons.logging.LogFactory.getLog(LogFactory.java:370)
at  org.apache.catalina.core.ContainerBase.getLogger(ContainerBase.java:380)
at  org.apache.catalina.core.StandardContext.start(StandardContext.java:4089)
at  org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at  org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at  org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at  org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at  org.apache.catalina.core.StandardService.start(StandardService.java:450)
at  org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at  org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at  sun.reflect.NativeMethodAccessorImpl.invoke0(Native  Method)
at  sun.reflect.NativeMethodAccessorImpl.invoke(Unknown  Source)
at  sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown  Source)
at  java.lang.reflect.Method.invoke(Unknown  Source)
at  org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:275)
at  org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
-------------------------------------------------------------------------------

请问怎么解决这个问题,另说明一下;

1.我用mysql-connector-java-3.1.12.zip也试过,不行.

2.我LOG4J写到普通文本可以成功.

是不是哪里配置错误?

--转自