CXF对Interceptor拦截器的支持

在每个请求响应之前或响应之后，做一些事情。这里的Interceptor就和Filter、Struts的Interceptor很类似，提供它的主要作用就是为了很好的降低代码的耦合性，提供代码的内聚性。下面我们就看看CXF的Interceptor是怎么样工作的。

1、 我们就用上面的HelloWorldService，客户端的调用代码重新写一份，代码如下：

package com.hoo.client;import org.apache.cxf.interceptor.LoggingInInterceptor;import org.apache.cxf.interceptor.LoggingOutInterceptor;import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;import com.hoo.service.IHelloWorldService;public class ServiceMessageInterceperClient {    public static void main(String args[]){        //调用WebService        JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();        factory.setServiceClass(IHelloWorldService.class);        factory.setAddress("http://localhost:9000/helloWorld");        factory.getInInterceptors().add(new LoggingInInterceptor());        factory.getOutInterceptors().add(new LoggingOutInterceptor());        IHelloWorldService service = (IHelloWorldService) factory.create();        System.out.println("[result]"+service.sayHello("e421083458"));    }}

上面的CXF的拦截器是添加在客户端，同样在服务器端也是可以添加拦截器Interceptor的。运行后结果如下：


2013-5-28 23:40:08 org.apache.cxf.service.factory.ReflectionServiceFactoryBean buildServiceFromClass
信息: Creating Service {http://service.hoo.com/}IHelloWorldServiceService from class com.hoo.service.IHelloWorldService
2013-5-28 23:40:09 org.apache.cxf.interceptor.AbstractLoggingInterceptor log
信息: Outbound Message
---------------------------
ID: 1
Address: http://localhost:9000/helloWorld
Encoding: UTF-8
Content-Type: text/xml
Headers: {SOAPAction=[""], Accept=[*/*]}
Payload: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ns1:sayHello xmlns:ns1="http://service.hoo.com/"><name>e421083458</name></ns1:sayHello></soap:Body></soap:Envelope>
--------------------------------------
2013-5-28 23:40:09 org.apache.cxf.interceptor.AbstractLoggingInterceptor log
信息: Inbound Message
----------------------------
ID: 1
Response-Code: 200
Encoding: UTF-8
Content-Type: text/xml;charset=UTF-8
Headers: {content-type=[text/xml;charset=UTF-8], Content-Length=[234], Server=[Jetty(7.2.2.v20101205)]}
Payload: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ns1:sayHelloResponse xmlns:ns1="http://service.hoo.com/"><return>e421083458say : Hello World</return></ns1:sayHelloResponse></soap:Body></soap:Envelope>
--------------------------------------
[result]e421083458say : Hello World


上面的部分信息是LoggingInterceptor输出的日志信息，分别在请求和响应的时候输出日志信息，还有输出请求的时候参数的信息以及响应的时候返回值的信息。

2、 刚才是客户端添加Interceptor，现在我们自己编写一个Interceptor，这个Interceptor需要继承AbstractPhaseInterceptor，实现handleMessage和一个带参数的构造函数。然后在服务器端添加这个Interceptor。
Interceptor代码如下：

package com.hoo.interceptor;import org.apache.cxf.interceptor.Fault;import org.apache.cxf.message.Message;import org.apache.cxf.phase.AbstractPhaseInterceptor;/** * 自定义消息拦截器 * @author Administrator * @createDate 2013-5-28下午5:28:38 * @file MessageInterceptor.java * @package com.hoo.interceptor * @project cxf_demo02 */public class MessageInterceptor extends AbstractPhaseInterceptor<Message> {    //至少要一个带参的构造函数    public MessageInterceptor(String phase) {        super(phase);    }    public void handleMessage(Message message) throws Fault {        System.out.println("############handleMessage##########");        System.out.println(message);        if (message.getDestination() != null) {            System.out.println(message.getId() + "#" + message.getDestination().getMessageObserver());        }        if (message.getExchange() != null) {            System.out.println(message.getExchange().getInMessage() + "#" + message.getExchange().getInFaultMessage());            System.out.println(message.getExchange().getOutMessage() + "#" + message.getExchange().getOutFaultMessage());        }    }}

下面看看发布服务和添加自定义拦截器的代码：

package com.hoo.delpoy;import org.apache.cxf.jaxws.JaxWsServerFactoryBean;import org.apache.cxf.phase.Phase;import com.hoo.interceptor.MessageInterceptor;import com.hoo.service.HelloWorldService;public class DeployInterceptorService {    public static void main(String args[])throws InterruptedException{        //发布WebService        JaxWsServerFactoryBean factory = new JaxWsServerFactoryBean();        //设置Service Class        factory.setServiceClass(HelloWorldService.class);        factory.setAddress("http://localhost:9000/helloWorld");        //设置ServiceBean对象        factory.setServiceBean(new HelloWorldService());                //添加请求和相应的拦截器,Phase.RECEIVE只对In有效，Phase.SEND只对Out有效        factory.getInInterceptors().add(new MessageInterceptor(Phase.RECEIVE));        factory.getOutInterceptors().add(new MessageInterceptor(Phase.SEND));                factory.create();                System.out.println("Server start......");        Thread.sleep(1000 * 60);        System.exit(0);        System.out.println("Server exit ");            }}

值得说的是，以前发布WebService是用Endpoint的push方法。这里用的是JaxWsServerFactoryBean和客户端调用的代码JaxWsProxyFactoryBean有点不同。

客户端调用代码：

package com.hoo.client;import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;import com.hoo.service.IHelloWorldService;public class HelloWorldServiceClient {     public static void main(String[] args) {        //调用WebService        JaxWsProxyFactoryBean factory = new JaxWsProxyFactoryBean();        factory.setServiceClass(IHelloWorldService.class);        factory.setAddress("http://localhost:9000/helloWorld");        IHelloWorldService service = (IHelloWorldService) factory.create();        System.out.println("[result]" + service.sayHello("hoojo"));    }}