GROOVY 类拦截器

class HelloWorld { String hello(name) { println "hello,$name" }}class SampleInterceptor implements Interceptor{ Object beforeInvoke(Object object, String methodName, Object[] arguments) { if(methodName == 'hello') { println "object: $object" println "method name: $methodName" println "method arguments: $arguments" } object } boolean doInvoke(){ true } //whether or not to invoke the intercepted Object afterInvoke(Object object, String methodName, Object[] arguments, Object result){ if(methodName == 'hello') result="23"; result }} def proxy= ProxyMetaClass.getInstance( HelloWorld ); proxy.interceptor= new SampleInterceptor(); proxy.use{ def helloworld= new HelloWorld() println helloworld.hello('world') }