CXF实现webService服务（一）

以前工作中也用CXF,但都是用别人现成搭好的环境，这次自己重头搭建一遍环境。过程中也有遇到的问题，也做了简单的整理。

对于CXF是干什么用的，我不想多说，大家都知道这是我们在Java编程中webService技术的一种实现工具。我们说说为什么用CXF来实现webService：

1.      Java的webService实现本身就是一个很耗性能的实现方案（xml与java对象之间在服务端以及客户端的互转比较消耗性能）

2.      目前java主流的webService应用以CXF、AXIS2为主；

3.      通过网络渠道的了解,目前CXF的效率要比AXIS2高出至少50%；

4.      另外有一个webService的工具metro的效率比CXF高出10%；

5.      CXF的实现资料网上可以随便找出一大堆，metro的资料相对少一些；

6.      CXF在java应用实现中已经很成熟，企业更倾向于用这样一个成熟的解决方案；

基于以上原因，我选择CXF来实现webService。

参考资料：

JavaWeb 服务: CXF 性能比较----CXF 与最新版本的 Axis2 和 Metro 之间的性能对比

http://www.ibm.com/developerworks/cn/java/j-jws14/

一   以annotation注解方式实现发布webService应用

1、  基础环境

新建java web工程cxf之后，下载cxf工具包。解压CXF之后，把cxf工具包lib下的jar包全部放到工程的lib下。

此处用到的cxf工具包版本为：apache-cxf-2.7.12

下载地址：

http://www.apache.org/dyn/closer.cgi?path=/cxf/2.7.12/apache-cxf-2.7.12.zip

2、  编写服务接口

见文件HelloWorld.java

package com.hsy.server;

import java.util.List;

import javax.jws.WebParam;
import javax.jws.WebService;

import com.hsy.pojo.User;

@WebService
public interface HelloWorld {
	String sayHi(@WebParam(name="text")String text);
    String sayHiToUser(User user);
    String[] SayHiToUserList(List<User> userList);
}

3、  服务接口实现

见文件HelloWorldImpl.java

package com.hsy.server;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import javax.jws.WebParam;
import javax.jws.WebService;

import com.hsy.pojo.User;

@WebService(endpointInterface="com.hsy.server.HelloWorld",serviceName="HelloWorld")
public class HelloWorldImpl implements HelloWorld {
	Map<Integer, User> users = new LinkedHashMap<Integer, User>();

	public String sayHi(@WebParam(name = "text") String text) {
		return "Hello,"+text;
	}

	public String sayHiToUser(User user) {
		users.put(users.size()+1, user);
		return "Hello,"+user.getName();
	}

	public String[] SayHiToUserList(List<User> userList) {
		String[] result = new String[userList.size()];
		int i = 0;
		for(User u:userList){
			result[i] = "Hello " + u.getName();
            i++;
		}
		return result;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

}

4、  发布服务app

见文件webServiceApp.java

右键 run as 选择java application发布服务；然后在浏览器输入地址：http://localhost:8080/helloWorld?wsdl

如图：20140805132120.jpg

说明webService服务发布成功。

5、  客户端访问服务

见文件HelloWorldClient.java

package com.hsy.client;

import org.apache.cxf.jaxws.JaxWsProxyFactoryBean;

import com.hsy.pojo.User;
import com.hsy.server.HelloWorld;

public class HelloWorldClient {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		//首先右键run as 运行com.hsy.server.webServiceApp类，然后再运行这段客户端代码
		JaxWsProxyFactoryBean jwpfb = new JaxWsProxyFactoryBean();
		jwpfb.setServiceClass(HelloWorld.class);
		jwpfb.setAddress("http://localhost:8080/helloWorld");
        HelloWorld hw = (HelloWorld) jwpfb.create();
        User user = new User();
        user.setName("马克思");
        user.setDescription("怀念马克思");
        System.out.println(hw.sayHiToUser(user));

    }

}

右键 run as 选择java application，控制台打印如图：

20140805132610.jpg

Ok，客户端访问也成功了。

6、  附：

User.java

package com.hsy.pojo;

import java.io.Serializable;

@SuppressWarnings("serial")
public class User implements Serializable {

	private String id;
	private String name;
	private String age;
	private String description;

	public User() {
		super();
	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getAge() {
		return age;
	}

	public void setAge(String age) {
		this.age = age;
	}

	public String getDescription() {
		return description;
	}

	public void setDescription(String description) {
		this.description = description;
	}
}

二与spring集成实现webService

1、  配置web.xml

见文件web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>cxf</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>

 	<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>
        <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>/webservice/*</url-pattern>
  	</servlet-mapping>

  <!-- 字符过滤器 -->
    <filter>
        <filter-name>encoding</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>  

    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>*.jsp</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>*.html</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>*.do</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>*.action</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>*.jsp</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>*.html</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>*.do</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>*.3g</url-pattern>
    </filter-mapping>   

</web-app>

2、  配置applicationContext.xml

见文件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.xsd
             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="helloWorld"
             implementor="com.hsy.server.HelloWorldImpl"
             address="/helloWorld" />

     <bean id="client"
     		class="com.hsy.server.HelloWorld"
     		factory-bean="clientFactory"
     		factory-method="create"/>

     <bean id="clientFactory" class="org.apache.cxf.jaxws.JaxWsProxyFactoryBean">
            <property name="serviceClass" value="com.hsy.server.HelloWorld"/>
            <property name="address" value="http://localhost:8080/cxf/webservice/helloWorld"/>
     </bean>

</beans>

3、  修改客户端代码

见文件HelloWorldClient.java

package com.hsy.client;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;

import com.hsy.pojo.User;
import com.hsy.server.HelloWorld;

public class HelloWorldClient {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		//Resource resource= new FileSystemResource("F:/workspaces4me2013/.metadata/.me_tcat/WEB-INF/classes/applicationContext.xml");
		//BeanFactory factory= new XmlBeanFactory(resource );
		ApplicationContext factory = new ClassPathXmlApplicationContext("/applicationContext.xml");
		HelloWorld client = (HelloWorld)factory.getBean("client");
        User user1 = new User();
        user1.setName("马克思");
        user1.setDescription("怀念马克思");
        User user2 = new User();
        user2.setName("恩格斯");
        user2.setDescription("怀念恩格斯");
        List<User> userList= new ArrayList<User>();
        userList.add(user1);
        userList.add(user2);
        String[] res = client.SayHiToUserList(userList);
        System.out.println(res[0]);
        System.out.println(res[1]);  

    }

}

4、  启动tamcat发布webService

然后在浏览器输入地址：http://localhost:8080/cxf/webservice/helloWorld?wsdl

如图：20140805133642.jpg

说明webService服务发布成功

5、  运行客户端代码访问webService

右键 run as 选择java application，控制台打印如图：

20140805134838.jpg

Ok，客户端访问也成功了。

本文为转载文章

原文出处： blog.csdn.net/hu_shengyang/article/details/38384597