Hessian的使用介绍

来源：互联网发布：数据有效性indirect 编辑：程序博客网时间：2024/05/21 14:59

一：添加hessian-4.0.7.jar至工程中

二：服务端发布的服务代码

建立web工程

1.接口Isay

 package fly.sun.demo1;public interface Isay {public String sayHello(String arg1,String arg2);}

2.接口的实现类IsayImpl

package fly.sun.demo1;public class IsayImpl implements Isay {public String sayHello(String arg1, String arg2) {return "Hello:" + arg1 + arg2; }}

3.在web.xml中配置Hessian的Servlet

<?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">  <display-name></display-name>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>     <servlet>   <servlet-name>hello</servlet-name>   <!-- 配置Hessian的Servlet(来源于jar包) -->     <servlet-class>com.caucho.hessian.server.HessianServlet</servlet-class>   <init-param>      <!-- 固定写为service-class --><param-name>service-class</param-name><param-value>fly.sun.demo1.IsayImpl</param-value></init-param>   </servlet>      <servlet-mapping>   <servlet-name>hello</servlet-name>   <url-pattern>/hello</url-pattern>   </servlet-mapping>  </web-app>

tomcat中启动工程即已经将服务发布了。

三：客户端调用服务端发布的服务

客户端也需要导入hessian-4.0.7.jar

客户端代码如下：

import com.caucho.hessian.client.HessianProxyFactory;public class HelloTest {public static void main(String[] args) throws Exception {// Hessian代理工厂HessianProxyFactory factory = new HessianProxyFactory();// 访问配置的Servlet路径 String url = "http://localhost:8080/发布服务的工程名/hello";  // 使用Hessian工厂获得接口的具体实现类Isay i = (Isay)factory.create(Isay.class, url);System.out.println(i.sayHello("fly", "sun"));}}

运行结果：

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