使用hessian简单使用【续】- 与spring结合使用
hessian与spring结合使用
依旧使用前面用到的两个项目servicepro与clientpro,导入相应的jar包,之前已经导入了hessian,此处只导入spring用到的jar包与aopalliance.jar,注:导入工程的jar有些可能不需要。
一、配置服务器端(servicepro工程)
1.在web.xml中需要进行如下配置
<servlet><servlet-name>remoting</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param><!--指定spring加载的文件具体位置,可以任意定义,默认为WEB-INF下,默认名称为${servlet-name}-servlet.xml (即remoting-servlet.xml)--> <param-name>contextConfigLocation</param-name> <param-value>classpath:remote-service.xml</param-value> </init-param> ?<load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>remoting</servlet-name><url-pattern>/service/*</url-pattern></servlet-mapping>? Spring的DispatcherServlet可以将请求转发到Hessian服务
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2.创建相应的接口与接口实现类
a.接口HessianHelloWorld
package com.remote;public interface HessianHelloWorld {String target();}?b.接口实现类
package com.remote.impl;import com.caucho.hessian.server.HessianServlet;import com.remote.HessianHelloWorld;public class HessianHelloWorldImpl extends HessianServlet implementsHessianHelloWorld {private static final long serialVersionUID = -489831024851039867L;@Overridepublic String target() {return "target:one piece";}}?
3.在工程的源代码根目录下面创建remote-service.xml文件
<?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:jee="http://www.springframework.org/schema/jee"xmlns:tx="http://www.springframework.org/schema/tx"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-3.0.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsdhttp://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"default-lazy-init="true"><!-- 声明具体实现的累 --><bean id="helloWorld" /><!-- 使用HessianServiceExporter 将普通bean导出成Hessian服务--><bean name="/remote"<!--客户端访问时的路径-->ref="helloWorld" /><!-- 需要导出的目标bean--> <property name="serviceInterface" value="com.remote.HessianHelloWorld" /><!-- Hessian服务的接口--> </bean> </beans>?
?通过Tomcat启动servicepro工程
项目整体结构如附件中图片:service-2.jpg
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二、配置客户端(clientpro工程)
此处用到的HessianHelloWorld通过服务器端(servicepro工程)创建并已jar文件的形式导出,最后添加到客户端(clientpro工程)中
1.在spring文件中配置远程bean
a.在工程的源代码根目录下面创建remote-bean.xml文件
b.添加相应的配置,沿用之前的接口HessianHelloWorld
<?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:jee="http://www.springframework.org/schema/jee"xmlns:tx="http://www.springframework.org/schema/tx"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-3.0.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsdhttp://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"default-lazy-init="true"><bean id="myService" name="code">package com.client.remote.test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.remote.HessianHelloWorld;public class ClientBySpringTest {public static void main(String[] args) {ApplicationContext context = new ClassPathXmlApplicationContext("remote-bean.xml"); HessianHelloWorld hello = (HessianHelloWorld)context.getBean("myService"); System.out.println(hello.target());}}通过上下文类加载配置文件remote-bean.xml中的内容,获取的bean的名称“myService”是在配置文件中定义的bean的id
项目整体结构如附件中图片:clientpro-2.jpg
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当服务器端通过spring配置,客户端若不需要使用spring时,同样可以使用纯hessian,也能够正常访问。反过来也是一样的
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其他参考资料
http://www.iteye.com/topic/14887
http://www.blogjava.net/freeman1984/archive/2010/01/27/310999.html
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