Groovy拦截

class AInterceptable implements GroovyInterceptable {	def add(val1, val2) {		val1 + val2	}	public Object invokeMethod(String name, args) {		System.out.PRintln("invokeMethod: " + name)		def method = AInterceptable.metaClass.getMetaMethod(name, args)		if (method) {			method.invoke(this, args)		} else {			System.out.println("no method find: " + name)		}	}}obj = new AInterceptable()println obj.add(11, 13)println obj.add("Hello ", "World!")obj.add()obj.del()返回invokeMethod: add24invokeMethod: addHello World!invokeMethod: addno method find: addinvokeMethod: delno method find: del2、对于POJO和部分POGO类来说，无法修改原始类，使用MetaClass类的invokeMethod方法。
class AGroovyClass {	def add(val1, val2) {		val1 + val2	}}AGroovyClass.metaClass.invokeMethod = { name, args ->	System.out.println("invokeMethod: " + name)	method = AGroovyClass.metaClass.getMetaMethod(name, args);	if (method) {		method.invoke(delegate, args)	} else {		System.out.println("no method find: " + name)	}}obj = new AGroovyClass()println obj.add(11, 13)println obj.add("Hello ", "World!")obj.add()obj.del()返回invokeMethod: add24invokeMethod: addHello World!invokeMethod: addno method find: addinvokeMethod: delno method find: del