JAVA

首先介绍下CXF的拦截器:
简单地说，CXF使用流水线型(或者说总线型)处理机制，它的核心是一个Bus。一个客户端的请求或者一个对客户端桩代码的调用被组织成为一个Message。同时，所有的CXF功能都组织成Interceptor挂接在Bus上，分阶段依次处理Message。Message本质上是一个Map数据结构，既包含系统公共的也包含Interceptor自定义的数据。

AbstractPhaseInterceptor<Message>这个抽象类拦截器类,自定义拦截器类可以继承它实现它其中一个抽象方法public void handleMessage(Message message) throws Fault

如下代码实现:

package com.jd.train.service.webservice.ipinterceptor;

import com.jd.train.service.util.CodesUtil;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.message.Message;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.transport.http.AbstractHTTPDestination;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

import javax.servlet.http.HttpServletRequest;
import java.util.List;

/**
 * Created by IntelliJ IDEA.
 * User: zhangzhaozhao
 * Date: 12-3-26
 * Time: 下午4:06
 * To change this template use File | Settings | File Templates.
 */
public class IpAddressInInterceptor extends AbstractPhaseInterceptor<Message> {
    //这个属性是注入进来的,你也可以从properties,xml文件中去读取,也可以从数据库中去获取;
    private List<String> ipList;

    public void setIpList(List<String> ipList) {
        this.ipList = ipList;
    }

    private final static Logger logger = LogManager.getLogger(IpAddressInInterceptor.class);
    public IpAddressInInterceptor() {
        super(Phase.RECEIVE);
    }

    public void handleMessage(Message message) throws Fault {
        //指定CXF获取客户端的HttpServletRequest : http-request；
        HttpServletRequest request = (HttpServletRequest) message.get(AbstractHTTPDestination.HTTP_REQUEST);
        String ipAddress="";
        boolean flag = false;
        if (null != request) {
            ipAddress = getUserIpAddr(request); // 取客户端IP地址
            logger.info("请求客户端的IP地址:" + ipAddress);
            for (String s : ipList) {
                if (s.equals(ipAddress)) {
                    flag = true;
                    break;
                }
            }
        }
        if(!flag) {
            throw new Fault(new IllegalAccessException("IP address " + ipAddress + " is stint"));
        }
    }

    /**
     * 获取IP地址的方法
     * @param request
     * @return
     */
    private String getUserIpAddr(HttpServletRequest request) {
        //获取经过代理的客户端的IP地址; 排除了request.getRemoteAddr() 方法 在通过了Apache,Squid等反向代理软件就不能获取到客户端的真实IP地址了
        String ip = CodesUtil.getIpAddr(request);
        if (ip != null && ip.indexOf(",") > 0) {
            logger.info("取到客户多个ip1====================" + ip);
            String[] arr = ip.split(",");
            ip = arr[arr.length - 1].trim();//有多个ip时取最后一个ip
            logger.info("取到客户多个ip2====================" + ip);
        }
        return ip;
    }
}

看下Spring 配置文件的信息:

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:jaxws="http://cxf.apache.org/jaxws"
       xmlns:http-conf="http://cxf.apache.org/transports/http/configuration" xmlns:cxf="http://cxf.apache.org/core"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
             http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
             http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd
             http://cxf.apache.org/transports/http/configuration
             http://cxf.apache.org/schemas/configuration/http-conf.xsd http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd"
       default-autowire="byName">

    <import resource="classpath:META-INF/cxf/cxf.xml"/>
    <import resource="classpath:META-INF/cxf/cxf-extension-soap.xml"/>
    <import resource="classpath:META-INF/cxf/cxf-servlet.xml"/>

    <jaxws:endpoint id="messageNotifyServices" address="/MessageNotifyServices" >
        <jaxws:implementor>
            <bean class="com.jd.train.service.webservice.impl.MessageNotifyServicesImpl"/>
        </jaxws:implementor>
        <jaxws:inInterceptors>
            <ref bean="ipInterceptor"/>
        </jaxws:inInterceptors>
    </jaxws:endpoint>
    <!-- 订单推送WebService接口-->
    <jaxws:endpoint id="orderStatusServices" address="/OrderStatusServices">
        <!--这是需要发布的实现类 -->
        <jaxws:implementor>
            <bean class="com.jd.train.service.webservice.impl.OrderStatusServicesImpl"/>
        </jaxws:implementor>
        <jaxws:inInterceptors>
            <ref bean="ipInterceptor"/>
        </jaxws:inInterceptors>
    </jaxws:endpoint>

    <!--毫秒单位 name 为 webservice 的域名 或者地址-->
    <http-conf:conduit name="${train.api.domain.name}.*">
        <http-conf:client ConnectionTimeout="10000" ReceiveTimeout="20000"/>
    </http-conf:conduit>

    <bean id="logIn" class="org.apache.cxf.interceptor.LoggingInInterceptor"/>
    <bean id="logOut" class="org.apache.cxf.interceptor.LoggingOutInterceptor"/>
     <!-- 自定义拦截器-->
    <bean id="ipInterceptor" class="com.jd.train.service.webservice.ipinterceptor.IpAddressInInterceptor"/>
    <!-- 合法的IP地址,如果第三方IP变动需要修改 -->
    <bean id="ipList" class="java.util.ArrayList">
        <constructor-arg>
            <list>
                <value>114.80.202.120</value>
            </list>
        </constructor-arg>
    </bean>

    <!-- CXF 全局的拦截器-->
   <cxf:bus>
       <cxf:inInterceptors>
           <ref bean="logIn"/>
       </cxf:inInterceptors>
       <cxf:outInterceptors>
           <ref bean="logOut" />
       </cxf:outInterceptors>
   </cxf:bus>

   
</beans>

解释下里面东西:
<jaxws:endpoint id="messageNotifyServices" address="/MessageNotifyServices" >
<jaxws:implementor>
    <bean class="com.jd.train.service.webservice.impl.MessageNotifyServicesImpl"/>
</jaxws:implementor>
<jaxws:inInterceptors>
    <ref bean="ipInterceptor"/>
</jaxws:inInterceptors>
</jaxws:endpoint>

<!-- 订单推送WebService接口-->
<jaxws:endpoint id="orderStatusServices" address="/OrderStatusServices">
<!--这是需要发布的实现类 -->
<jaxws:implementor>
    <bean class="com.jd.train.service.webservice.impl.OrderStatusServicesImpl"/>
</jaxws:implementor>
<jaxws:inInterceptors>
    <ref bean="ipInterceptor"/>
</jaxws:inInterceptors>
</jaxws:endpoint>
这两个是我发布出去的WebService 接口(这里需要你自己去实现,我并没有把代码贴出来);
<jaxws:inInterceptors>
    <ref bean="ipInterceptor"/>
</jaxws:inInterceptors> 这个是自定义的拦截器类

说到这里需要注意下了:如果把自定义的拦截器引入到发布出去的接口当中,而不是引入到全局的<cxf:bus>中,这样只对你发布出去的接口起作用
如果配置到全局的<cxf:bus>中对你访问第三方的WebService接口和别人访问你发布出去的WebService接口,都起到拦截作用,我开发过程遇到此问题,我调用第三方的webService接口时候也被拦截了,其中在自定义拦截器的HttpServletRequest request = (HttpServletRequest) message.get(AbstractHTTPDestination.HTTP_REQUEST);
request是null ,并且IP也被过过滤掉了,使其我不能访问第三方的接口了.

第二个问题:就是Spring 配置文件的头信息http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd搞进去!

第三个问题:就是在获取客户IP时候,request.getRemoteAddr()取得客户端的IP地址,但是在通过了Apache,Squid等反向代理软件就不能获取到客户端的真实IP地址了。
经过代理以后，由于在客户端和服务之间增加了中间层，因此服务器无法直接拿到客户端的IP，服务器端应用也无法直接通过转发请求的地址返回给客户端。但是在转发请求的HTTP头信息中，增加了X－FORWARDED－FOR信息用以跟踪原有的客户端IP地址和原来客户端请求的服务器地址。
给出比较靠谱实现:
 public static String getIpAddr(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串ip值，其中哪个才是真正的用户端的真实IP呢？
答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。如：X-Forwarded-For：192.168.1.110, 192.168.1.120, 192.168.1.130, 192.168.1.100,用户真实IP为： 192.168.1.110
如果朋友遇到以上问题,请多加注意.