Java代碼
public interface IHello {
public void hello(String name);
}
Java代碼
public class HelloImpl implements IHello{
@Override
public void hello(String name) {
System.out.println("Hello:" name);
}
}
Java代碼
package proxy;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
public class LogHandler implements InvocationHandler {
private Logger logger = Logger.getLogger(this.getClass().getName());
private Object delegate;
public Object bind(Object delegate) {
this.delegate = delegate;
return Proxy.newProxyInstance(delegate.getClass().getClassLoader(), delegate.getClass().getInterfaces(), this);
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
Object result = null;
log("method starts..." method);
result = method.invoke(delegate, args);
logger.log(Level.INFO,"methods ends ..." method);
return result;
}
private void log(String message) {
logger.log(Level.INFO,message);
}
public static void main(String[] args) {
LogHandler logHandler = new LogHandler();
IHello helloProxy = (IHello)logHandler.bind(new HelloImpl());
helloProxy.hello("ssssssssssssss");
}
}
[火星人 ] spring技術手冊上的一個java動態代理例子已經有1036次圍觀
