使用p.cglib监控system.out输出流

package test;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.lang.reflect.Method;

import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;

public class Test extends PrintStream implements MethodInterceptor {
private File targs;

public Test(File targs) throws FileNotFoundException {
super("D:/a.txt");
this.targs = targs;
}

public Object getTargs() {
return targs;
}

public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
return method.invoke(targs, args);
}

public void println(Object o) {
System.out.println(o);
}

public void println(String o) {
System.out.println(o);
}

public Object intercept(Object arg0, Method arg1, Object[] arg2,
MethodProxy arg3) throws Throwable {

try {
String s = new String(((String) arg2[0]).getBytes("gbk"), "utf-8");
} catch (Exception e) {

}

return arg3.invokeSuper(arg0, arg2);
}
}