in class B:private void CallMethodInA()
{
try
{
new B().MethodName();
}
catch(Exception ex)
{
//异常处理,如写入日志等
}
}
{
try
{
new B().MethodName();
}
catch(Exception ex)
{
//异常处理,如写入日志等
}
}
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...
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
...
class B {
protected Log log = null;
public B() {
log = LogFactory.getLog(this.getClass());
}
...
try {
A a = new A();
a.someMethod();
}
catch (Exception e) {
log.error(e);
}
}其它详见
http://blog.csdn.net/changzheng/archive/2004/12/01/201098.aspx
log4j.properties
# For JBoss: Avoid to setup log4j outside $JBOSS_HOME/server/default/deploy/log4j.xml!
# For all other servers: Comment out the Log4J listener in web.xml too.
log4j.rootLogger=INFO, stdout, logfile
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - <%m>%n
log4j.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=springapp.log
log4j.appender.logfile.MaxFileSize=512KB
# Keep three backup files.
log4j.appender.logfile.MaxBackupIndex=3
# Pattern to output: date priority [category] - message
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n
in class B:protected final Log logger = LogFactory.getLog(getClass());
private void CallMethodInA()
{
try
{
new B().MethodName();
}
catch(Exception ex)
{
logger.info(ex.getMessage());
}
}