cxf和spring mvc的集成

Spring MVC是通过DispatcherServlet来加载Spring配置文件的，因此不需要在web.xml中配置ContextLoaderListener。但是CXF却需要通过ContextLoaderListener来加载Spring。

这样就产生了一个矛盾，如果不配置ContextLoaderListener，CXF就无法正常使用。但如果配置ContextLoaderListener，又会造成Spring的重复加载（DispatcherServlet一次，ContextLoaderListener一次）

在网上查了一下资料，只看到一个国外的程序员提出不配置ContextLoaderListener，通过写一个CXFController，来替代默认的CXFServlet。但是这种HACK的方式总是不太好

所以我采用一种折中的方式，来解决Spring MVC和cxf并存的问题。但是也不是很优雅，希望有人能给出更好的办法

首先是web.xml的配置

<?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"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"id="MyFramework" version="3.0"><display-name>MyFramework</display-name><context-param>    <param-name>contextConfigLocation</param-name>        <param-value>         WEB-INF/beans.xml,             WEB-INF/cxf.xml        </param-value>    </context-param>    <listener>          <listener-class>              org.springframework.web.context.ContextLoaderListener          </listener-class>      </listener>  <servlet><servlet-name>framework</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param>          <param-name>contextConfigLocation</param-name>          <param-value>WEB-INF/spring-mvc.xml</param-value>     </init-param>     <load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>framework</servlet-name><url-pattern>/</url-pattern></servlet-mapping><servlet>          <servlet-name>CXFServlet</servlet-name>          <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>          <load-on-startup>2</load-on-startup>      </servlet>        <servlet-mapping>          <servlet-name>CXFServlet</servlet-name>          <url-pattern>/webservice/*</url-pattern>      </servlet-mapping>  </web-app>

在ContextLoaderListener里面，加载cxf和spring的公共配置信息。然后在DispatcherServlet中加载spring mvc所需的信息。利用Spring配置文件拆分的方式，既实现spring mvc和cxf的共存，又避免spring配置信息的重复加载

然后是公共的配置信息，beans.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:context="http://www.springframework.org/schema/context"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans       http://www.springframework.org/schema/beans/spring-beans-3.1.xsd       http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-3.1.xsd       http://www.springframework.org/schema/tx       http://www.springframework.org/schema/tx/spring-tx-3.1.xsd"><context:component-scan base-package="com.huawei.framework" /><bean id="propertyConfigurer"class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"><property name="locations"><list><value>classpath:jdbc.properties</value></list></property></bean><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="driverClass" value="${jdbc.driver}" /><property name="jdbcUrl" value="${jdbc.url}" /><property name="user" value="${jdbc.username}" /><property name="password" value="${jdbc.password}" /><property name="minPoolSize" value="10" /><property name="maxPoolSize" value="50" /></bean><bean id="sessionFactory"class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"><property name="dataSource" ref="dataSource" /><property name="mappingLocations"value="classpath:/com/huawei/framework/model/**/*.hbm.xml" /><property name="hibernateProperties"><props><prop key="hibernate.dialect">org.hibernate.dialect.OracleDialect</prop><prop key="hibernate.show_sql">true</prop><prop key="hibernate.format_sql">true</prop><prop key="hibernate.jdbc.fetch_size">50</prop><prop key="hibernate.jdbc.batch_size">25</prop><prop key="hibernate.temp.use_jdbc_metadata_defaults">false</prop></props></property></bean><bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"><property name="sessionFactory" ref="sessionFactory" /><property name="fetchSize" value="10" /></bean><bean id="transactionManager"class="org.springframework.orm.hibernate3.HibernateTransactionManager"><property name="sessionFactory" ref="sessionFactory" /></bean><tx:annotation-driven transaction-manager="transactionManager" /></beans>

然后是cxf所需的信息，cxf.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-3.1.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-servlet.xml" /><jaxws:endpoint id="helloWorld"implementorClass="com.huawei.framework.webservice.HelloWorldImpl"address="/HelloWorld" /></beans>

最后是spring mvc所需的信息，spring-mvc.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:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context"xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans       http://www.springframework.org/schema/beans/spring-beans-3.1.xsd       http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-3.1.xsd       http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd"><context:component-scan base-package="com.huawei.framework" /><mvc:annotation-driven /><mvc:default-servlet-handler /><beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"p:prefix="/WEB-INF/view/" p:suffix=".jsp"p:viewClass="org.springframework.web.servlet.view.JstlView" /></beans>

这顺便还带来一个附带的好处，即进行单元测试的时候，可以仅加载必须的类，比如做DAO组件的单元测试，就不需要加载spring-mvc.xml和cxf.xml了

@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = { "file:WebContent/WEB-INF/beans.xml" })public class UserDaoHibernateTest {@Autowiredprivate UserDao dao;private static String ID;@Testpublic void testInsert() {User user = new User();user.setName("fme001");user.setAge(23);dao.insert(user);}@Testpublic void testQueryByName() {String name = "fme001";User user = dao.queryByName(name);assertEquals(23, user.getAge());ID = user.getId();}@Testpublic void testQueryByAge() {int age = 23;List<User> result = dao.queryByAge(age);assertEquals(1, result.size());}@Testpublic void testQueryAll() {List<User> result = dao.queryAll();assertEquals(1, result.size());}@Testpublic void testQuery() {User user = dao.query(ID);assertEquals(23, user.getAge());assertEquals("fme001", user.getName());}@Testpublic void testUpdate() {User user = dao.query(ID);user.setAge(24);dao.update(user);user = dao.query(ID);assertEquals(24, user.getAge());}@Testpublic void testDelete() {User user = dao.query(ID);dao.delete(user);}}

可以看到，集成cxf和spring mvc确实不算很方便，需要绕一绕。上述方法只是一个折中的方案，希望新版本的cxf可以提供一个CXFController，这样的话就可以统一用DispatcherServlet来加载Spring，不配置ContextLoaderListener。这样的话web.xml可以简洁很多。或者如果哪位网友有更好的方式，请指教一下

转：http://kyfxbl.iteye.com/blog/1432920 请尊重作者劳动成果！