// 反射调用某个对象的方法

public Object invokeMethod(Object methodObject, String methodName,

Object[] args) throws Exception {

Class ownerClass = methodObject.getClass();

Class[] argsClass = new Class[args.length];

for (int i = 0, j = args.length; i < j; i++) {

argsClass[i] = args[i].getClass();

}

Method method = ownerClass.getMethod(methodName, argsClass);

return method.invoke(methodObject, args);

}