helloservicehandler.java

来自「一组使用XML的JAVA源代码」· Java 代码 · 共 33 行

package reflect.proxy;

import java.lang.reflect.*;

public class HelloServiceHandler implements InvocationHandler {
      private HelloService handler;

      public HelloServiceHandler(HelloService hs){
        handler = hs;
      }
     /**
     * invoke
     *
     * @param object Object
     * @param method Method
     * @param objectArray Object[]
     * @return Object
     * @throws Throwable
     * @todo Implement this java.lang.reflect.InvocationHandler method
     */
    public Object invoke(Object object, Method method, Object[] objectArray) throws
            Throwable {
        String methodName = method.getName();
        if(methodName.equals("sayHello")){
          System.out.println("before sayHello");
          Class[] params = method.getParameterTypes();
          Method m = handler.getClass().getMethod(methodName, params);
          return m.invoke(handler,objectArray);
        }
        return new RuntimeException("No handler");
    }
}