CXF中的拦截器分为in拦截器和out拦截器，又有客户端拦截器和服务端拦截器。

拦截器使用流程：客户端（out）-> 服务端（in）->处理业务->服务端（out）->客户端（in），并不是每一步都需要拦截器。在这里我们用到的是客户端Out拦截器和服务端in拦截器。服务端in拦截器检查用户级权限，客户端out浏览器发送用户信息给服务端。

1、创建服务端验证

JaxWsServerFactoryBean或Endpoint都可以通过getInInterceptors方法，向WebService服务添加拦截器。

1.1 Endpoint方式

		HelloWorldService service = new HelloWorldServiceImpl();
		String address = "http://localhost:8080/hello";
		
		EndpointImpl endpoint = (EndpointImpl)Endpoint.publish(address, service);
		endpoint.getInInterceptors().add(new AuthInterceptor());

		HelloWorldServiceImpl impl = new HelloWorldServiceImpl();
		JaxWsServerFactoryBean factory = new JaxWsServerFactoryBean();
		factory.setAddress("http://localhost:8080/hello");
		factory.setServiceClass(HelloWorldService.class);
		factory.setServiceBean(impl);
		factory.getInInterceptors().add(new AuthInterceptor());
		factory.create();

package com.tiamaes.webservice.auth;

import java.util.List;

import org.apache.cxf.binding.soap.SoapMessage;
import org.apache.cxf.headers.Header;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

/**  
 * <p>类描述：用户权限验证拦截器  </p>
 * <p>修改人：王成委 </p>
 * <p>修改时间：2014-5-10 下午03:16:16  </p>
 * @version  
 */
public class AuthInterceptor extends AbstractPhaseInterceptor<SoapMessage> {

	//在调用之前拦截
	public AuthInterceptor() {
		super(Phase.PRE_INVOKE);
	}

	/**
	 * 自定义拦截器需要实现handleMessage方法，该方法抛出Fault异常，可以自定义异常集成自Fault，
	 * 也可以new Fault(new Throwable())
	 */
	public void handleMessage(SoapMessage soap) throws Fault {
		System.out.println("开始验证用户信息");
		List<Header> headers = soap.getHeaders();
		
		//检查headers是否存在
		if(headers == null | headers.size()<1){
			throw new Fault(new IllegalArgumentException("找不到Header，无法验证用户信息"));
		}
		
		Header header = headers.get(0);
		
		Element el = (Element)header.getObject();
		NodeList users = el.getElementsByTagName("username");
		NodeList passwords = el.getElementsByTagName("password");
		
		//检查是否有用户名和密码元素
		if(users.getLength()<1){
			throw new Fault(new IllegalArgumentException("找不到用户信息"));
		}
		String username = users.item(0).getTextContent().trim();
		
		if(passwords.getLength()<1){
			throw new Fault(new IllegalArgumentException("找不到密码信息"));
		}
		String password = passwords.item(0).getTextContent();
		
		//检查用户名和密码是否正确
		if(!"admin".equals(username) || !"admin".equals(password)){
			throw new Fault(new IllegalArgumentException("用户名或密码不正确"));
		}else{
			System.out.println("用户名密码正确允许访问");
		}
	}
}

2、客户端发送用户信息

客户端则需要添加out拦截器，在out拦截器中加入消息头

客户端拦截器：ClienLoginInterceptor

package com.tiamaes.webservice.auth;

import java.util.List;

import javax.xml.namespace.QName;

import org.apache.cxf.binding.soap.SoapMessage;
import org.apache.cxf.headers.Header;
import org.apache.cxf.helpers.DOMUtils;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.w3c.dom.Document;
import org.w3c.dom.Element;

/**  
 * <p>类描述：  </p>
 * <p>修改记录 ---------------- </p>
 * <p>修改人：王成委 </p>
 * <p>修改时间：2014-5-10 下午03:58:10  </p>
 * <p>修改备注：  </p>
 * @version  
 */
public class ClientLoginInterceptor extends AbstractPhaseInterceptor<SoapMessage> {

	private String username;
	private String password;
	public void setUsername(String username) {
		this.username = username;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	/**
	 * 创建一个新的实例 ClientLoginInterceptor.
	 *
	 * @param username
	 * @param password
	 */
	public ClientLoginInterceptor(String username, String password) {
		super(Phase.PREPARE_SEND);
		this.username = username;
		this.password = password;
	}
	/* (non-Javadoc)
	 * @see org.apache.cxf.interceptor.Interceptor#handleMessage(org.apache.cxf.message.Message)
	 */
	public void handleMessage(SoapMessage soap) throws Fault {
		// TODO Auto-generated method stub
		List<Header> headers = soap.getHeaders();
		
		Document doc = DOMUtils.createDocument();
		
		Element auth = doc.createElement("authrity");
		Element username = doc.createElement("username");
		Element password = doc.createElement("password");
		
		username.setTextContent(this.username);
		password.setTextContent(this.password);
		
		auth.appendChild(username);
		auth.appendChild(password);
		//doc.appendChild(auth);
		
		headers.add(0, new Header(new QName("tiamaes"),auth));
	}

}

	public static void main(String[] args) {
		JaxWsDynamicClientFactory dcf = JaxWsDynamicClientFactory.newInstance();
		Client client = dcf.createClient("http://127.0.0.1:8080/hello?wsdl");
		client.getOutInterceptors().add(new ClientLoginInterceptor("admin", "admin"));
		try {
			Object[] objs = client.invoke("syaHello", "Tom");
			System.out.println(objs[0].toString());
		} catch (Exception e) {
			e.printStackTrace();
		}
	}