引自：http://www.cnblogs.com/luangeng/p/6602667.html
CXF拦截器是功能的主要实现单元，也是主要的扩展点，可以在不对核心模块进行修改的情况下，动态添加功能。当服务被调用时，会经过多个拦截器链（Interceptor Chain）处理，拦截器链在服务输入（IN）或输出（OUT）阶段实现附加功能，拦截器可以在客户端加入，也可以在服务端加入。
拦截器链的阶段：
拦截器链有多个阶段，每个阶段都有多个拦截器。拦截器在拦截器链的哪个阶段起作用，可以在拦截器的构造函数中声明。 输入拦截器链有如下几个阶段，这些阶段按照在拦截器链中的先后顺序排列。
阶段名称阶段功能描述RECEIVETransport level processing(接收阶段，传输层处理)(PRE/USER/POST)_STREAMStream level processing/transformations(流处理/转换阶段)READThis is where header reading typically occurs(SOAPHeader读取)(PRE/USER/POST)_PROTOCOLProtocol processing, such as JAX-WS SOAP handlers(协议处理阶段，例如JAX-WS的Handler处理)UNMARSHALUnmarshalling of the request(SOAP请求解码阶段)(PRE/USER/POST)_LOGICALProcessing of the umarshalled request(SOAP请求解码处理阶段)PRE_INVOKEPre invocation actions(调用业务处理之前进入该阶段)INVOKEInvocation of the service(调用业务阶段)POST_INVOKEInvocation of the outgoing chain if there is one(提交业务处理结果，并触发输入连接器)输出拦截器链有如下几个阶段，这些阶段按照在拦截器链中的先后顺序排列。
阶段名称阶段功能描述SETUPAny set up for the following phases(设置阶段)(PRE/USER/POST)_LOGICALProcessing of objects about to marshalledPREPARE_SENDOpening of the connection(消息发送准备阶段，在该阶段创建Connection)PRE_STREAM流准备阶段PRE_PROTOCOLMisc protocol actions(协议准备阶段)WRITEWriting of the protocol message, such as the SOAP Envelope.(写消息阶段)MARSHALMarshalling of the objects(USER/POST)_PROTOCOLProcessing of the protocol message(USER/POST)_STREAMProcessing of the byte level message(字节处理阶段，在该阶段把消息转为字节)SEND消息发送在CXF中，所有对消息的处理都是通过各种拦截器实现。CXF已经实现了多种拦截器，如操纵消息头、执行认证检查、验证消息数据、日志记录、消息压缩等，有些拦截器在发布服务、访问服务时已经默认添加到拦截器链。
日志拦截器
CXF已经内置了一些拦截器，这些拦截器大部分默认添加到拦截器链中，有些需要手动添加，如CXF提供的日志拦截器：输入日志拦截器LoggingInInterceptor和输出日志拦截器LoggingOutInterceptor，可以用在服务端也可以用在客户端，用来在测试或调试的时候输出服务端、客户端请求和接收到的信息。
服务端配置方式如下：
<!-- 发布REST WebService --> <jaxrs:server id="restServiceContainer" address="/cxf"> <!--输入拦截器设置--> <jaxrs:inInterceptors> <bean class="org.apache.cxf.interceptor.LoggingInInterceptor"></bean> </jaxrs:inInterceptors> <!--输出拦截器设置--> <jaxrs:outInterceptors> <bean class="org.apache.cxf.interceptor.LoggingOutInterceptor"></bean> </jaxrs:outInterceptors> <!--WebService服务类--> <jaxrs:serviceBeans> <ref bean="restService"/> </jaxrs:serviceBeans> </jaxrs:server>
API方式：
JAXRSServerFactoryBean jrf = new JAXRSServerFactoryBean(); jrf.setResourceClasses(RestServiceImpl.class); jrf.setResourceProvider(RestServiceImpl.class, new SingletonResourceProvider(new RestServiceImpl())); jrf.setAddress(url); jrf.getInInterceptors().add(new LoggingInInterceptor()); jrf.getOutInterceptors().add(new LoggingOutInterceptor()); jrf.create();客户端配置方式：
JAXRSClientFactoryBean factory = new JAXRSClientFactoryBean(); factory.setServiceClass(RestService.class); factory.setAddress(url); factory.getInInterceptors().add(new LoggingInInterceptor()); factory.getOutInterceptors().add(new LoggingOutInterceptor()); RestService ser = factory.create(RestService.class); ser.get();
输出日志形式如下：客户端：
[INFO ] 03-22 22:33:39 org.apache.cxf.interceptor.AbstractLoggingInterceptor.log(AbstractLoggingInterceptor.java:250) Outbound Message --------------------------- ID: 1 Address: http://localhost:8080/webapp/ws/cxf/rest Http-Method: GET Content-Type: application/xml Headers: {Content-Type=[application/xml], Accept=[text/plain]} -------------------------------------- [INFO ] 03-22 22:33:39 org.apache.cxf.interceptor.AbstractLoggingInterceptor.log(AbstractLoggingInterceptor.java:250) Inbound Message ---------------------------- ID: 1 Response-Code: 200 Encoding: ISO-8859-1 Content-Type: text/plain Headers: {content-type=[text/plain], Date=[Wed, 22 Mar 2017 14:33:39 GMT], transfer-encoding=[chunked]} Payload: this is default get plain --------------------------------------
服务端：
[INFO ] 03-22 22:33:39 org.apache.cxf.interceptor.AbstractLoggingInterceptor.log(AbstractLoggingInterceptor.java:250) Inbound Message ---------------------------- ID: 4 Address: http://localhost:8080/webapp/ws/cxf/rest Encoding: UTF-8 Http-Method: GET Content-Type: application/xml Headers: {Accept=[text/plain], cache-control=[no-cache], connection=[keep-alive], content-type=[application/xml], host=[localhost:8080], pragma=[no-cache], user-agent=[Apache CXF 3.0.3]} -------------------------------------- [INFO ] 03-22 22:33:39 org.apache.cxf.interceptor.AbstractLoggingInterceptor.log(AbstractLoggingInterceptor.java:250) Outbound Message --------------------------- ID: 4 Response-Code: 200 Content-Type: text/plain Headers: {Content-Type=[text/plain], Date=[Wed, 22 Mar 2017 14:33:39 GMT]} Payload: this is default get plain --------------------------------------
自定义拦截器
CXF中也可以自定义拦截器，CXF中实现自定义拦截器需要继承AbstractPhaseInterceptor或者其子类如AbstractSoapInterceptor。
一个简单的拦截器：
/** * CXF 自定义拦截器 */ public class MyInterceptor extends AbstractPhaseInterceptor<Message>{ //必需提供一个带参数的构造函数 public MyInterceptor(String phase){ super(phase); } //覆写拦截后的动作 @Override public void handleMessage(Message message) throws Fault{ Q.p("~~~~~~~~~~~~~~~~~~"); if (message.getDestination() != null) { Q.p(message.getDestination().getAddress()); } if (message.getExchange() != null) { Q.p(message.getExchange().getInMessage()); Q.p(message.getExchange().getOutMessage()); } Q.p(message.getContent(String.class)); Q.p("~~~~~~~~~~~~~~~~~~~"); } }---
添加到客户端拦截器链：
JAXRSClientFactoryBean factory = new JAXRSClientFactoryBean(); factory.setServiceClass(RestService.class); factory.setAddress(url); factory.getInInterceptors().add(new MyInterceptor(Phase.RECEIVE)); factory.getOutInterceptors().add(new MyInterceptor(Phase.SEND)); ser = factory.create(RestService.class); ser.get();---
输出：
[DEBUG] 03-22 23:07:38 org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:304) Invoking handleMessage on interceptor cn.lg.ws.MyInterceptor@58cbafc2 ~~~~~~~~~~~~~~~~~~ null {org.apache.cxf.message.Message.PROTOCOL_HEADERS={Content-Type=[application/xml], Accept=[text/plain]}, org.apache.cxf.transport.Conduit=conduit: class org.apache.cxf.transport.http.URLConnectionHTTPConduit1715248762target: http://localhost:8080/webapp/ws/cxf/rest, org.apache.cxf.request.uri=http://localhost:8080/webapp/ws/cxf/rest, jaxrs.template.parameters=null, org.apache.cxf.message.Message.ENDPOINT_ADDRESS=http://localhost:8080/webapp/ws/cxf/rest, jaxrs.proxy=true, org.apache.cxf.request.method=GET, org.apache.cxf.transport.processOneWayResponse=true, http.connection=sun.net.www.protocol.http.HttpURLConnection:http://localhost:8080/webapp/ws/cxf/rest, org.apache.cxf.message.Message.BASE_PATH=http://localhost:8080/webapp/ws/cxf/, org.apache.cxf.client=true, org.apache.cxf.invocation.context={ResponseContext={}, RequestContext={org.apache.cxf.message.Message.PROTOCOL_HEADERS={Content-Type=[application/xml], Accept=[text/plain]}, org.apache.cxf.request.uri=http://localhost:8080/webapp/ws/cxf/rest, BODY_INDEX=-1, org.apache.cxf.message.Message.ENDPOINT_ADDRESS=http://localhost:8080/webapp/ws/cxf/rest, jaxrs.proxy=true, org.apache.cxf.jaxrs.model.OperationResourceInfo=org.apache.cxf.jaxrs.model.OperationResourceInfo@117159c0}}, java.lang.annotation.Annotation=[Ljava.lang.annotation.Annotation;@19e4653c, org.apache.cxf.message.inbound=false, http.scheme=http, Content-Type=application/xml, org.apache.cxf.empty.request=true} null ~~~~~~~~~~~~~~~~~~~---
[DEBUG] 03-22 23:07:38 org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:304) Invoking handleMessage on interceptor cn.lg.ws.MyInterceptor@795509d9 ~~~~~~~~~~~~~~~~~~ {org.apache.cxf.message.Message.PROTOCOL_HEADERS={content-type=[text/plain], Date=[Wed, 22 Mar 2017 15:07:38 GMT], transfer-encoding=[chunked]}, org.apache.cxf.transport.Conduit=conduit: class org.apache.cxf.transport.http.URLConnectionHTTPConduit1715248762target: http://localhost:8080/webapp/ws/cxf/rest, org.apache.cxf.client=true, org.apache.cxf.message.Message.ENCODING=ISO-8859-1, org.apache.cxf.message.inbound=true, org.apache.cxf.message.Message.RESPONSE_CODE=200, Content-Type=text/plain} {org.apache.cxf.message.Message.PROTOCOL_HEADERS={Content-Type=[application/xml], Accept=[text/plain]}, org.apache.cxf.transport.Conduit=conduit: class org.apache.cxf.transport.http.URLConnectionHTTPConduit1715248762target: http://localhost:8080/webapp/ws/cxf/rest, org.apache.cxf.request.uri=http://localhost:8080/webapp/ws/cxf/rest, jaxrs.template.parameters=null, org.apache.cxf.message.Message.ENDPOINT_ADDRESS=http://localhost:8080/webapp/ws/cxf/rest, jaxrs.proxy=true, org.apache.cxf.request.method=GET, org.apache.cxf.transport.processOneWayResponse=true, http.connection=sun.net.www.protocol.http.HttpURLConnection:http://localhost:8080/webapp/ws/cxf/rest, org.apache.cxf.message.Message.BASE_PATH=http://localhost:8080/webapp/ws/cxf/, org.apache.cxf.client=true, org.apache.cxf.invocation.context={ResponseContext={}, RequestContext={org.apache.cxf.message.Message.PROTOCOL_HEADERS={Content-Type=[application/xml], Accept=[text/plain]}, org.apache.cxf.request.uri=http://localhost:8080/webapp/ws/cxf/rest, BODY_INDEX=-1, org.apache.cxf.message.Message.ENDPOINT_ADDRESS=http://localhost:8080/webapp/ws/cxf/rest, jaxrs.proxy=true, org.apache.cxf.jaxrs.model.OperationResourceInfo=org.apache.cxf.jaxrs.model.OperationResourceInfo@117159c0}}, java.lang.annotation.Annotation=[Ljava.lang.annotation.Annotation;@19e4653c, org.apache.cxf.message.inbound=false, http.scheme=http, Content-Type=application/xml, org.apache.cxf.empty.request=true} null ~~~~~~~~~~~~~~~~~~~
end
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