code: public static MethodInvokeProxy proxyByName(Object target,String methodName,Object ...args)
  	{
  		Method m=findMethodByName(target, methodName);
  		if(m!=null)
  		{
  			return new MethodInvokeProxy(target, m, args);
  		}
  		return null;
  	}
docs: 根据方法名称获取对象的方法调用句柄
  @param target
  @param methodName
  @param args
  @return