怎样生成日志文件

[baal]

我想在servlet 里直接把日志写到一个log文件里去，但我用java.util.logging的时， try {
// Create a file handler that write log record to a file called my.log
FileHandler handler = new FileHandler("my.log");
// Add to the desired logger
Logger logger = Logger.getLogger("examples.servlets.LoginServlet");
logger.addHandler(handler);
} catch (IOException e) {
}
编译通过，但调用的时候出现下列错误！


<2002-8-17 下午02时11分37秒> <Error> <HTTP> <101020> <[ServletContext(id=4787716
,name=DefaultWebApp,context-path=)] Servlet failed with Exception
java.lang.SecurityException: Prohibited package name: java.util.logging
at java.lang.ClassLoader.defineClass(ClassLoader.java:479)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:11
1)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:248)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:286)
at java.lang.ClassLoader.loadClass(ClassLoader.java:292)
at java.lang.ClassLoader.loadClass(ClassLoader.java:292)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at weblogic.utils.classloaders.ChangeAwareClassLoader.loadClass(ChangeAw
areClassLoader.java:43)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:315)
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at weblogic.servlet.internal.ServletStubImpl.createServlet(ServletStubIm
pl.java:765)
at weblogic.servlet.internal.ServletStubImpl.createInstances(ServletStub
Impl.java:743)
at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubI
mpl.java:687)
at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.
java:447)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:287)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:242)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:5363)
at weblogic.security.service.SecurityServiceManager.runAs(SecurityServic
eManager.java:721)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
rvletContext.java:3043)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
pl.java:2466)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:152)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:133)


高手们看看，给我一点意见

[wjmmml]

System.out.println("");
就直接写到log文件里面去了啊，

[IMarksman]

采用apache的log4j吧！

[baal]

System.out.println("");不是写到控制台吗？怎么写到.log文件去？