多系统（异构系统）进行交互时，一种良好的方式便是调用Web Service，本示例基于Apache组织的CXF，为了方便起见特将服务端和客户端写在同一个工程下，实际项目中是不可能的，但是客户端却依赖于服务 端的Web Service接口，那么可以通过导出jar的方式。

环境：
MyEclipse10
JDK6
Tomcat7
CXF2.5
Spring3

示例项目结构图：

如上图所示，全部依赖的第三方库都在lib中，下面贴出全部代码。
IHelloService.java

package bing.server;

import javax.jws.WebService;

/**
* <p>
* WebService接口
* </p>
*
* @author IceWee
* @date 2012-7-6
* @version 1.0
*/
@WebService
public interface IHelloService {

    public String sayHello(String username);
   
}

HelloServiceImpl.java

package bing.server;

import javax.jws.WebService;

/**
* <p>
* WebService实现类
* </p>
*
* @author IceWee
* @date 2012-7-6
* @version 1.0
*/
@WebService(endpointInterface = "bing.server.IHelloService", serviceName = "HelloService")
public class HelloServiceImpl implements IHelloService {

    @Override
    public String sayHello(String username) {
        return "hello, " + username;
    }

}

HelloServiceClient.java

package bing.client;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import bing.server.IHelloService;

/**
* <p>
* WebService调用方-客户端
* </p>
*
* @author IceWee
* @date 2012-7-6
* @version 1.0
*/
public class HelloServiceClient {

    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext-client.xml");
        IHelloService helloService = (IHelloService) context.getBean("client");
        String response = helloService.sayHello("Peter");
        System.out.println(response);
    }

}

applicationContext-server.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jaxws="http://cxf.apache.org/jaxws"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                       http://www.springframework.org/schema/beans/spring-beans.xsd
                       http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd">
    <!--
        ***注意***
        手动添加的内容：
        xmlns:jaxws="http://cxf.apache.org/jaxws"
        http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd"
     -->
   
    <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="helloService" implementor="bing.server.HelloServiceImpl" address="/helloService" />
       
</beans>

applicationContext-client.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jaxws="http://cxf.apache.org/jaxws"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                       http://www.springframework.org/schema/beans/spring-beans.xsd
                       http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd">
    <!--
        ***注意***
        手动添加的内容：
        xmlns:jaxws="http://cxf.apache.org/jaxws"
        http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd"
     -->
   
    <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" />

    <bean id="client" class="bing.server.IHelloService" factory-bean="clientFactory" factory-method="create" />

    <bean id="clientFactory" class="org.apache.cxf.jaxws.JaxWsProxyFactoryBean">
        <property name="serviceClass" value="bing.server.IHelloService" />
        <property name="address" value="http://localhost:8080/CXFDemo/ws/helloService" />
    </bean>
</beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
  <display-name>CXFDemo</display-name>
 
  <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:applicationContext-server.xml</param-value>
  </context-param>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
 
  <servlet>
    <servlet-name>CXFServlet</servlet-name>
    <display-name>CXFServlet</display-name>
    <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>CXFServlet</servlet-name>
    <url-pattern>/ws/*</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

所有项目都已配置完成，可以发布到Tomcat了，在浏览器中输入：http://localhost:8080/CXFDemo/ws，返回如图：

从上图中可以看到我们对外发布的WebService接口，点击蓝色超链接，返回如图：

到此，证明我们的Web Service已经发布成功，可以进行调用测试了。运行HelloServiceClient，返回如图：

全文完！