Spring是目前最流行的JavaEE Framework,但是使用Spring的Spring-WS開發WebService卻十分繁瑣。XFire是一個簡化WebService開發的開源項目,通過Spring和XFire的結合可以大大簡化基於Spring Framework的應用中的WebService開發。
Spring和XFire可以通過多種方式結合,下文介紹的是筆者常用的一種簡單而實用的方法。所用的Spring版本為2.0,XFire版本為1.2.6。
1、配置XFire Servlet
在web.xml中加入如下配置:
<servlet>
<servlet-name>XFireServlet</servlet-name>
<servlet-class>
org.codehaus.xfire.spring.XFireSpringServlet
</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>
2 配置Spring的監聽器,同基於spring的Web項目一樣Spring的監聽器是必不可少的。
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:org/codehaus/xfire/spring/xfire.xml,
/WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
以下是完整的web.xml配置文件
<?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>
classpath:org/codehaus/xfire/spring/xfire.xml,
/WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>XFireServlet</servlet-name>
<servlet-class>
org.codehaus.xfire.spring.XFireSpringServlet
</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>
3 定義接口及實現服務
定義接口,這個接口中定義要通過WebService暴露的方法
package org.ccsoft;
publicinterface HelloWS {
public String sayHello(String sb);
}
實現服務
package org.ccsoft;
publicclass HelloWSImp implements HelloWS {
public String sayHello(String sb) {
// TODO Auto-generated method stub
return"Hello "+sb;
}
}
4 配置服務
將上文中實現的服務,加入到spring的配置文件中。
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">
<bean id="helloWS" class="org.ccsoft.HelloWSImp"/>
<bean name="helloService" class="org.codehaus.xfire.spring.ServiceBean">
<property name="serviceBean" ref="helloWS"/>
<property name="serviceClass" value="org.ccsoft.HelloWS"/>
<property name="inHandlers">
<list>
<ref bean="addressingHandler"/>
</list>
</property>
</bean>
<bean id="addressingHandler" class="org.codehaus.xfire.addressing.AddressingInHandler"/>
</beans>