CXF+Spring构建webservice

CXF实现了Spring的完美结合，使webservice的开发更加方便,废话少说，马上开始

环境：JDK1.5,tomcat5.5,myeclipse7.5

开始之前，先从apache下载CXF．

1.先创建一个web project工程CXF_project，把从上面从apahce上下载的CXF的lib目录下所有的jar导入工程

2.接口的创建

package com.cxf;

import javax.jws.WebService;

@WebService  //1
public interface IHelloWorld {
	public String sayHello(String name);
}

实现类的创建

package com.cxf;

import javax.jws.WebService;

@WebService  //2
public class HelloWorld implements IHelloWorld {

	public String sayHello(String name) {
		return "Hello, "+(name==null?"":name.trim());
	}

	public String sayGoodBy(String name) {
		return "Goodbye, "+(name==null?"":name.trim());
	}
}

3.新建spring配置文件applicationContext.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-2.0.xsd
		http://cxf.apache.org/jaxws
		http://cxf.apache.org/schemas/jaxws.xsd">

	<!-- Import apache CXF bean definition -->
	<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"/>
    
	<!-- Define HelloWorld Bean -->
	<bean id="helloWorld" class="com.cxf.HelloWorld"></bean>
	
	<!-- Define HelloWorld service-->
	<jaxws:server id="helloWorldService"
    		serviceClass="com.cxf.IHelloWorld"
    		address="/HelloWorld">
    		<jaxws:serviceBean>
    			<ref bean="helloWorld"/>
    		</jaxws:serviceBean>
	  </jaxws:server>  
</beans>

上面显示,spring通过jaxws:server发布webservice服务端应用接口,serviceClass表示发布的接口,address表示接口的地址,如http://localhost:8080/CXF/services/HelloWorld

4.web.xml应用配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/classes/applicationContext.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	<servlet>
		<display-name>CXF Servlet</display-name>
		<servlet-name>CXFServlet</servlet-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>/services/*</url-pattern>
	</servlet-mapping>
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>
</web-app>

上面除了定义spring，还定义了CXF的访问路径

目前为止，开发webservice的步聚完毕，只需把CXF_project发布到tomcat并重启server，访问
http://localhost:8080/CXF/services/HelloWorld?wsdl，就可以看到相关的信息，webservice发布成功．

5.下面是编写客户端程序，所对于xfire，CXF+Spring更加灵活，以bean的方式调用，客户端的webservice配置文件如下

<?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-2.0.xsd
		http://cxf.apache.org/jaxws
		http://cxf.apache.org/schemas/jaxws.xsd">

	<!-- Import apache CXF bean definition -->
	<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:client id="helloWorld"
    	serviceClass="com.cxf.IHelloWorld"
    	address="http://localhost:8080/CXF/services/HelloWorld">
    </jaxws:client>
</beans>

如上所示，spring通过jaxws:client形式定义了客户端的bean，通过它可以调用服务端的方法

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.cxf.IHelloWorld;

public class HelloWorldClient {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception{
		// TODO Auto-generated method stub
		ApplicationContext context = new ClassPathXmlApplicationContext("applicationContextClient.xml");
		IHelloWorld helloWorld = (IHelloWorld)context.getBean("helloWorld");
		System.out.println(helloWorld.sayHello("Tom"));
	}

}

运行上面的程序，输出:Hello, Tom.

总结：
所对于axis2，CXF支持Spring，以配置文件形式定义webservice，而客户端访问程序简单灵活．