webservice一个简单应用程序

以下的WEB工程虽然在实际应用中没有实际作用，但能很好的说明webservice的应用原理：
准备条件：
1. 创建一个工程Xfire
2. 导入Xfire的jar包，可到http://xfire.codehaus.org下载
步聚：
1. 写接口：Calculator.java

package com.test.service;

public interface Calculator {
	public int add(int a,int b);
	
	public int subtract(int a,int b);
	
	public int multiply(int a,int b);
	
	public int divide(int a,int b);
}

2. 写实现类：CalculatorImpl.java

package com.test.service.impl;

import com.test.service.Calculator;

public class CalculatorImpl implements Calculator {

	public int add(int a, int b) {
		return a+b;
	}

	public int divide(int a, int b) {
		return a/b;
	}

	public int multiply(int a, int b) {
		return a*b;
	}

	public int subtract(int a, int b) {
		return a-b;
	}

}

3. 写映射文件：web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	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_2_5.xsd">
  <servlet>
    <servlet-name>XFireServlet</servlet-name>
    <servlet-class>
        org.codehaus.xfire.transport.http.XFireConfigurableServlet
    </servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>XFireServlet</servlet-name>
    <url-pattern>/servlet/XFireServlet/*</url-pattern>
  </servlet-mapping>

  <servlet-mapping>
    <servlet-name>XFireServlet</servlet-name>
    <url-pattern>/services/*</url-pattern>
  </servlet-mapping>
</web-app>

4. 写配置文件：src/META-INF/xfire/services.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://xfire.codehaus.org/config/1.0">
<service>
    <name>Calculator</name>
    <serviceClass>com.test.service.Calculator</serviceClass>
    <implementationClass>com.test.service.impl.CalculatorImpl</implementationClass>
</service>
</beans>

5. 客户端：Client.java

package com.test.client;

import java.net.MalformedURLException;

import org.codehaus.xfire.XFireFactory;
import org.codehaus.xfire.client.XFireProxyFactory;
import org.codehaus.xfire.service.Service;
import org.codehaus.xfire.service.binding.ObjectServiceFactory;

import com.test.service.Calculator;

public class Client {

	/**
	 * @param args
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception {
		Service service=new ObjectServiceFactory().create(Calculator.class);
		
		String url="http://localhost:8080/XFire/services/Calculator";
		
		XFireProxyFactory factory=new XFireProxyFactory(XFireFactory.newInstance().getXFire());
		
		Calculator c=(Calculator)factory.create(service, url);
		
		System.out.println(c.getClass().getName());
		
		System.out.println(c.add(1, 2));
		System.out.println(c.subtract(1, 2));
		System.out.println(c.multiply(1, 2));
		System.out.println(c.divide(1, 2));
	}

}