[转载]spring的httpInvoker远程调用 示例

转自http://jer-gavin.iteye.com/blog/1490505

服务端

实体类 注意实现Serializable接口，这是执行远程调用传递数据对象的第一要求——数据对象必须实现Serializable接口，因为，要执行序列化/反序列化操作！ 

public class User implements Serializable {

    private static final long serialVersionUID = -2270657445785947163L;

    private String userName;
    
    private int age;

    public User(String userName,int age){
        this.userName = userName;
        this.age = age;
    }
    
    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
    
    public String toString(){
        return "my name is:"+userName+"and my age is:"+age;
    }
}

接口

public interface TestHttpInvokerInterface {

    User getUser(String userName,int age);
}

实现类

public class TestHttpInvokerInterfaceImpl implements TestHttpInvokerInterface {
     private Logger logger = Logger.getLogger(TestHttpInvokerInterfaceImpl.class);  
    
    public User getUser(String userName, int age) {
        User user = new User(userName,age);
        logger.debug(user);
        return user;
    }
    
    
}

web.xml

<servlet>  
    <servlet-name>dispatcherServlet</servlet-name>  
    <servlet-class>  
        org.springframework.web.servlet.DispatcherServlet  
    </servlet-class>  
    <init-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>classpath:/spring/service-config.xml</param-value>  
    </init-param>  
    <load-on-startup>1</load-on-startup>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>dispatcherServlet</servlet-name>  
        <url-pattern>*.service</url-pattern>  
    </servlet-mapping>  

service-config.xml　　HttpInvokerServiceExporter，这个类用来在服务器端包装需要暴露的接口。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
               http://www.springframework.org/schema/context           
               http://www.springframework.org/schema/context/spring-context-2.5.xsd
               http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
               http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

    <bean id="userService"  class="com.wyq.service.impl.TestHttpInvokerInterfaceImpl" />  
    
    <bean id="serviceExporter"    class="org.springframework.remoting.httpinvoker.HttpInvokerServiceExporter">
        <property name="service" ref="userService" />
        <property name="serviceInterface" value="com.wyq.service.TestHttpInvokerInterface" />
    </bean>
     <bean id="urlMapping"  
        class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">  
        <property name="mappings">  
     <!--          <map>  
                    <entry  key="/user.service" value-ref="userService" />  
               </map>  -->
             <props>  
                <prop key="/user.service">serviceExporter</prop>  
            </props>  
        </property>  
    </bean>  

</beans>

服务端设置完毕

客户端

定义一个相同的接口

定义一个测试方法

public class HttpInvokerClinet {

    private static Logger logger = Logger.getLogger(HttpInvokerClinet.class);
    
    public static void main(String[] args){
        ApplicationContext context = new ClassPathXmlApplicationContext("classpath:/spring/httpInvokerClinet-config.xml");
        TestHttpInvokerInterface service = (TestHttpInvokerInterface)context.getBean("userService");
        User user = service.getUser("wyq", 25);
        logger.debug(user);
    }
}

定义httpInvokerClient-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
               http://www.springframework.org/schema/context           
               http://www.springframework.org/schema/context/spring-context-2.5.xsd
               http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
               http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
    <!-- 配置文件导入 -->
    <bean id="configure"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location"
            value="classpath:/config.properties" />
    </bean>
    
    <bean  id="userService"  
        class="org.springframework.remoting.httpinvoker.HttpInvokerProxyFactoryBean">  
    <!-- 服务端地址 -->
    <property  name="serviceUrl"  value="${HttpInvokerServer}/WYQ/user.service" />  
    <property   name="serviceInterface"  
        value="com.wyq.service.TestHttpInvokerInterface" />  
    <!-- 若用默认可不定义此属性 -->
    <property name="httpInvokerRequestExecutor" ref="httpInvokerRequestExecutor"></property>
    </bean>  
    
<!--  单线程
    <bean  id="httpInvokerRequestExecutor" class="org.springframework.remoting.httpinvoker.CommonsHttpInvokerRequestExecutor">  
        <property  name="httpClient">  
            <bean  class="org.apache.commons.httpclient.HttpClient">  
                <property   name="connectionTimeout"  value="2000" />  
                <property  name="timeout"  value="5000" />  
            </bean>  
        </property>  
    </bean>-->
    
    <bean  id="httpInvokerRequestExecutor" class="org.springframework.remoting.httpinvoker.CommonsHttpInvokerRequestExecutor">  
        <property name="httpClient" ref="httpclient" /> 
    </bean>
    <!--  HttpClient 启用Apache HttpClient 通信 
        默认实现，服务器平均10s左右才能响应一个请求。 
        多线程实现，服务器平均20ms左右响应一个请求。 -->  
     <bean id="httpclient" class="org.apache.commons.httpclient.HttpClient">    
        <constructor-arg>    
            <ref bean="connectionManager"/>    
        </constructor-arg>     
    </bean>  
    
     <!-- http管理参数配置 -->  
    <bean id="connectionManager" class="org.apache.commons.httpclient.MultiThreadedHttpConnectionManager">    
        <property name="params" ref="connectionManagerParams"/>    
    </bean>   
      
    <!-- httpclient线程池 -->    
    <bean id="connectionManagerParams" class="org.apache.commons.httpclient.params.HttpConnectionManagerParams">  
        <!-- 设置 连接超时时间(毫秒),默认为0不使用 -->    
        <property name="connectionTimeout" value="5000"/>   
        <!-- 设置 读取数据超时(毫秒),默认为0不使用 -->   
        <property name="soTimeout" value="10000"/>    
        <!-- 设置默认的连接数量最大允许对一个给定的主机配置 -->  
        <property name="maxTotalConnections" value="30"/>  
        <!-- 允许的最大连接数 -->    
        <property name="defaultMaxConnectionsPerHost" value="20"/>    
    </bean>   
</beans>