apache cxf服务端拦截器拦截客户端并中断返回自定义消息

   apache cxf框架最主要的扩展点就是拦截器了，拦截器可以在不对核心模块进行修改的情况下，动态添加很多功能。拦截器和JAX-WS Handler、Filter的功能类似，当服务被调用时，就会创建一个拦截器链（Interceptor Chain），拦截器链在服务输入（IN）或输出（OUT）阶段实现附加功能。

public class ValidateInterceptor extends AbstractPhaseInterceptor<XMLMessage>{
private Logger log = LoggerFactory.getLogger(getClass());

public ValidateInterceptor(String phase) {
super(phase);
}

public ValidateInterceptor() {
super(Phase.PRE_INVOKE);
}

@Override
public void handleMessage(XMLMessage arg0) throws Fault {
MessageContentsList lstContent = MessageContentsList.getContentsList(arg0);
try {
MsgObject msgObject = (MsgObject)ValidateUtil.valitWlefParams(lstContent.get(0));
if("error".equals(msgObject.getReturnCode())) {
HttpServletResponse response = (HttpServletResponse)arg0.get(AbstractHTTPDestination.HTTP_RESPONSE);
ServletOutputStream out = response.getOutputStream();
String outMsg = JsonUtil.toJson(msgObject);
log.info("回送字符串：" + outMsg);
try {
out.write(outMsg.getBytes("utf-8"));
out.flush();
arg0.getInterceptorChain().doInterceptStartingAfter(arg0, "org.apache.cxf.jaxrs.interceptor.JAXRSOutInterceptor");
} catch (Exception e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
}

}

}