Hession入门

昨天发现有这样的好东西！研究了一下，发现很不错！介绍个大家学习学习，而且这个资料比较少，希望能让大家入门了！

相比WebService，Hessian更简单、快捷。采用的是二进制RPC协议，因为采用的是二进制协议，所以它很适合于发送二进制数据。下面演示一个简单的Hessian示例程序。

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定义一个接口

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package study.hessian; public interface IBasic { public String hello(); public Person getPerson(); }

一个接口的实现类

package study.hessian; public class BasicService implements IBasic { private String hello= "Hello,Vincent"; public String hello() { return hello; } public Person getPerson() { Person person = new Person(); person.setColor("Yello"); person.setLength("176cm"); person.setName("vincent"); return person; } }

?定义一个实体，必须实现序列化接口，因为要通过网络传输

package study.hessian; import java.io.Serializable; public class Person implements Serializable{ private static final long serialVersionUID = 3276641446246664L; private String name; private String length; private String color; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getLength() { return length; } public void setLength(String length) { this.length = length; } public String getColor() { return color; } public void setColor(String color) { this.color = color; } }

web.xml文件

<?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"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>hello</servlet-name> <servlet-class> com.caucho.hessian.server.HessianServlet </servlet-class> <init-param> <param-name>home-class</param-name> <param-value>study.hessian.BasicService</param-value> </init-param> <init-param> <param-name>home-api</param-name> <param-value>study.hessian.IBasic</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>hello</servlet-name> <url-pattern>/hello</url-pattern> </servlet-mapping> </web-app>

客户端的类（JAVA）

package study.hessian; import com.caucho.hessian.client.HessianProxyFactory; public class BasicClient { public static void main(String []args) throws Exception { String url = "http://127.0.0.1:8080/WorkTest/hello"; HessianProxyFactory factory = new HessianProxyFactory(); IBasic basic = (IBasic) factory.create(IBasic.class,url); System.out.println(basic); Person person = basic.getPerson(); System.out.println("Hello: " + basic.hello()); System.out.println("Hello: " + person.toString()); } }

读后感：

1- 整个jar很小,200多K,3.1版本的,当然,我下载的for java的版本.

2- 配置很简单,基本上不需要花什么经历就配置出来了

3- 功能强大,可以将soap抛开,也可以把EJB抛开,采用二进制来传递对象

4- 拥有多种语言支持,python?c++? .net 甚至 flex 都可以做为client端?