提取签名与源方法相同的方法。

/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements. See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership. The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License. You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing,

 * software distributed under the License is distributed on an

 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

 * KIND, either express or implied. See the License for the

 * specific language governing permissions and limitations

 * under the License.

 */

import java.lang.reflect.Method;

import javax.enterprise.inject.Typed;

import java.security.AccessController;/* 来 自 时 代      J a v a   公   众 号 - nowjava.com*/

import java.security.PrivilegedAction;

import java.util.jar.Manifest;

import java.util.jar.Attributes;

import java.net.URL;


public class Main{

    /**

     * Extracts a method with same signature as the source method.

     * 

     * @param clazz The target class

     * @param sourceMethod The source method.

     * @return the extracted method or <code>null</code>

     */

    public static Method extractMethod(Class<?> clazz, Method sourceMethod) {

        try {

            String name = sourc