hessian学习

  hessian是个轻量级的玩意，介绍为：http://hessian.caucho.com/doc/hessian-overview.xtp

一个典型的例子如下，先建立web工程

接口如下：

package hessian;

public interface IBasic {   
   
    /**  
     * 测试字符串  
     * @return  
     */  
    public String hello();   
  
    /**  
     * 取一辆汽车   测试对象传递  
     * @return  
     */  
    public Car getCar();   
  
}  

 

实现：

 

package hessian;

public class BasicService implements IBasic {   
   private String hello= "Hello, world";   
   
   public String hello()   
   {   
     return hello;   
   }   
   
     public Car getCar() {   
         Car car = new Car();   
         car.setColor("RED红色");   
         car.setLength("2400");   
         car.setName("HAHACHE");   
         return car;   
     }   
 }  

 

注意car中要实现序列化，否则出错

package hessian;
import java.io.Serializable; 
public class Car implements Serializable {
  private String color;
  private String length;
  private String name;
public String getColor() {
 return color;
}
public void setColor(String color) {
 this.color = color;
}
public String getLength() {
 return length;
}
public void setLength(String length) {
 this.length = length;
}
public String getName() {
 return name;
}
public void setName(String name) {
 this.name = name;
}
 
}

 

客户端:
package hessian;
import com.caucho.hessian.client.HessianProxyFactory;
public class BasicClient {   
    public static void main(String []args)   
        throws Exception   
      {   
        String url = "http://localhost:8085/HessianDemo1/hello";   
        HessianProxyFactory factory = new HessianProxyFactory();   
        IBasic basic = (IBasic) factory.create(IBasic.class, url);   
          Car car   = basic.getCar();   
          System.out.println("Hello: " + basic.hello());   
        System.out.println("Hello: " + car.getName());   
      }   
  
  
}  

web.xml:

<web-app version="2.4"
 xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
 http://java.sun.com/xml/ns/j2ee/web-app_2_4.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>hessian.BasicService</param-value>  
    </init-param>  
     <init-param>  
        <param-name>home-api</param-name>  
        <param-value>hessian.IBasic</param-value>  
    </init-param>  
   
</servlet>