Hessian入門(與Spring集成)

說明 ：

1.    講述如何配置Hessian的服務器端(與Spring集成).

2.    講述客戶端如何調用

①   使用HessianProxyFactory  Hessian代理工廠直接調用

②   使用HessianProxyFactoryBean Hessian代理工廠Bean來完成接口調用.

 

1.    講述如何配置Hessian的服務器端(與Spring集成).

接口定義類: com.wtang.isay. Isay:

 

package com.wtang.isay;

public interface Isay {
    public String sayHello(String arg1,String arg2);
}

 

接口具體實現類: com.wtang.isay. IsayImpl

package com.wtang.isay;

public class IsayImpl implements Isay {

    public String sayHello(String arg1, String arg2) {
        return "Hello:" + arg1 + arg2;
    }
}

配置Web.xml:

<servlet>
    <servlet-name>remote</servlet-name>
    <!-- 使用Spring的代理Servlet -->
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>namespace</param-name>
        <param-value>classes/remote-servlet</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>remote</servlet-name>
    <url-pattern>/remote/*</url-pattern>
</servlet-mapping>

配置remote-servlet.xml[該文件位於src目錄下,即編譯後存在與classes下]:

2.    講述客戶端如何調用

        ① 使用HessianProxyFactory  Hessian代理工廠直接調用

 即:

       

package com.wtang.test;

import java.net.MalformedURLException;
import com.caucho.hessian.client.HessianProxyFactory;
import com.wtang.isay.Isay;

public class NormalClient {
    public static void main(String[] args) throws MalformedURLException {
        //Spring Hessian代理Servelet
        String url = "http://localhost:8080/HessianSpring/remote/helloSpring";
        HessianProxyFactory factory = new HessianProxyFactory();
        Isay api = (Isay) factory.create(Isay.class, url);

        System.out.println(api.sayHello("chen", "weitang"));
    }
}

 

輸出Hello:chenweitang

 

2.    講述客戶端如何調用

        ② 使用HessianProxyFactoryBean Hessian代理工廠Bean來完成接口調用.

配置客戶端 remote-client.xml:

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <!-- 客戶端Hessian代理工廠Bean -->
    <bean id="clientSpring" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">
        <!-- 請求代理Servlet路徑 -->
        <property name="serviceUrl">
<value>http://localhost:8080/HessianSpring/remote/helloSpring</value>
        </property>
        <!-- 接口定義 -->
        <property name="serviceInterface">
            <value>com.wtang.isay.Isay</value>
        </property>
    </bean>
</beans>

 

調用:

package com.wtang.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.wtang.isay.Isay;

public class SpringClient {
    public static void main(String[] args) {
        ApplicationContext contex = new ClassPathXmlApplicationContext(
                "remote-client.xml");

        // 獲得客戶端的Hessian代理工廠bean
        Isay i = (Isay) contex.getBean("clientSpring");
        System.out.println(i.sayHello("chen", "weitang"));
    }
}

 

輸出Hello:chenweitang