log4j 驱动加载错误

错误：

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver

 

配置文件如下：

 

# JDBC Appender 
#######################
log4j.appender.DATABASE=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.DATABASE.URL=jdbc:mysql://localhost:3306/test
log4j.appender.DATABASE.driver=com.mysql.jdbc.Driver
log4j.appender.DATABASE.user=root
log4j.appender.DATABASE.password=root
log4j.appender.DATABASE.sql=INSERT INTO LOG4J (Message) VALUES ('[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n') 
log4j.appender.DATABASE.layout=org.apache.log4j.PatternLayout 
log4j.appender.DATABASE.layout.ConversionPattern=[framework] %d - %c -%-4r [%t] %-5p %c %x - %m%n
log4j.appender.A1=org.apache.log4j.DailyRollingFileAppender 
log4j.appender.A1.File=logs/jdbc.log4j 
log4j.appender.A1.DatePattern=yyyyMMdd-HH'.log4j' 
log4j.appender.A1.layout=org.apache.log4j.xml.XMLLayout

 

异常信息如下：

log4j:ERROR Failed to load driver
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
	at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:169)

 

在确保类引入，驱动com.mysql.jdbc.Driver名称正确的情况下，最后发现：删除log4j.propeties配置文件后面多余的空格即可解决此问题！