Hessian入门

最新推荐文章于 2020-03-11 14:51:55 发布

原创最新推荐文章于 2020-03-11 14:51:55 发布 · 778 阅读

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#string #service #servlet #interface #exception #class

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本文介绍Hessian二进制WebService协议，并通过创建Java接口作为公共API、使用HessianProxyFactory创建客户端、实现服务接口类及配置Servlet引擎来演示如何搭建Hessian服务。

官方http://hessian.caucho.com/对hessian的描述很精辟:

The Hessian binary web service protocol makes web services usable without requiring a large framework, and without learning yet another alphabet soup of protocols. Because it is a binary protocol, it is well-suited to sending binary data without any need to extend the protocol with attachments.

只是怎么官方最近的jar to java貌似都不能用，鄙视下...

Creating a Hessian service using Java has four steps:

Create an Java interface as the public API
Create a client using HessianProxyFactory
Create the Service implementation class
Configure the service in your servlet engine.

public interface Hello { public String hello(String name); public Car getCar(); }

public class HelloImpl implements Hello { public String hello(String name) { return "hello " + name + ", you are very handsome!"; } public Car getCar() { Car car = new Car(); car.setName("丰田卡罗拉"); car.setColor("黑色"); car.setLength("三米六"); return car; } }

public class Car implements Serializable { /** * */ private static final long serialVersionUID = 1L; public String name; public String length; public String color; //getter setter省略 }

<servlet> <servlet-name>hessianService</servlet-name> <servlet-class>com.caucho.hessian.server.HessianServlet</servlet-class> <init-param> <param-name>home-class</param-name> <param-value>包名.HelloImpl</param-value> </init-param> <init-param> <param-name>home-api</param-name> <param-value>包名.Hello</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>hessianService</servlet-name> <url-pattern>/hs</url-pattern> </servlet-mapping>

public static void main(String[] args) throws Exception { String url = "http://localhost:8081/hessian/hs"; HessianProxyFactory factory = new HessianProxyFactory(); Hello d = (Hello) factory.create(Hello.class, url); System.out.println(d.hello("Allen")); System.out.println("his car:"+ d.getCar().getName()); System.out.println("car color:"+ d.getCar().getColor()); System.out.println("car length:"+ d.getCar().getLength()); }