RabbitMQ学习之基于spring-rabbitmq的RPC远程调用

spring-rabbitmq中实现远程接口调用，主要在com.rabbitmq.spring.remoting下几个类：
发布服务端(Server)：RabbitInvokerServiceExporter.java
接口调用客户端(Client)：RabbitInvokerProxyFactoryBean.java，RabbitInvokerClientInterceptor.java，
RabbitRpcClient.java（对RpcClient的简单封装，添加了发送消息时的选项：

mandatory--是否强制发送，immediate--是否立即发送，timeoutMs--超时时间）

实例如下创建自动删除非持久队列）：

1.测试服务接口TestService.Java

 package cn.slimsmart.rabbitmq.spring.rabbitmq.demo.rpc;

 /**
  * RPC服务接口
  * @author ztw-pc
  *
  */
 public interface TestService {
     String say(String msg);
 }

2.测试服务接口实现TestServiceImpl.java

 package cn.slimsmart.rabbitmq.spring.rabbitmq.demo.rpc;

 public class TestServiceImpl implements TestService {

     public String say(String msg) {
         return "hello "+msg;
     }
 }

3..资源配置application.properties

 #============== rabbitmq config ====================
 rabbit.hosts=192.168.36.102
 rabbit.username=admin
 rabbit.password=admin
 rabbit.virtualHost=/
 rabbit.exchange=spring-queue-async
 rabbit.queue=spring-queue-async
 rabbit.routingKey=spring-queue-async

4.服务端配置applicationContext-rabbitmq-rpc-server.xml

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

      <context:property-placeholder location="classpath:application.properties"/>

      <bean id="rabbitConnectionFactory" class="com.rabbitmq.spring.connection.RabbitConnectionFactory">
         <property name="connectionFactory">
             <bean class="com.rabbitmq.client.ConnectionFactory">
                <property name="username" value="${rabbit.username}"/>
                <property name="password" value="${rabbit.password}"/>
                <property name="virtualHost" value="${rabbit.virtualHost}"/>
             </bean>
         </property>
         <property name="hosts" value="${rabbit.hosts}"/>
     </bean>
      <bean id="rabbitChannelFactory" class="com.rabbitmq.spring.channel.RabbitChannelFactory">
         <property name="connectionFactory" ref="rabbitConnectionFactory"/>
     </bean>

     <bean id="testServiceImpl" class="cn.slimsmart.rabbitmq.spring.rabbitmq.demo.rpc.TestServiceImpl"/>

     <bean id="testServiceExport" class="com.rabbitmq.spring.remoting.RabbitInvokerServiceExporter">
         <property name="channelFactory" ref="rabbitChannelFactory"/>
         <property name="serviceInterface" value="cn.slimsmart.rabbitmq.spring.rabbitmq.demo.rpc.TestService"/>
         <property name="service" ref="testServiceImpl"/>
          <property name="exchange" value="${rabbit.exchange}"/>
          <!-- 必须大写  -->
         <property name="exchangeType" value="TOPIC"/>
         <property name="routingKey" value="${rabbit.routingKey}"/>
         <property name="queueName" value="${rabbit.queue}"/>
         <property name="poolsize" value="5"/>
     </bean>

 </beans>

5.客服端配置applicationContext-rabbitmq-rpc-client.xml

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

      <context:property-placeholder location="classpath:application.properties"/>

      <bean id="rabbitConnectionFactory" class="com.rabbitmq.spring.connection.RabbitConnectionFactory">
         <property name="connectionFactory">
             <bean class="com.rabbitmq.client.ConnectionFactory">
                <property name="username" value="${rabbit.username}"/>
                <property name="password" value="${rabbit.password}"/>
                <property name="virtualHost" value="${rabbit.virtualHost}"/>
             </bean>
         </property>
         <property name="hosts" value="${rabbit.hosts}"/>
     </bean>
      <bean id="rabbitChannelFactory" class="com.rabbitmq.spring.channel.RabbitChannelFactory">
         <property name="connectionFactory" ref="rabbitConnectionFactory"/>
     </bean>

     <bean id="testService" class="com.rabbitmq.spring.remoting.RabbitInvokerProxyFactoryBean">
         <property name="channelFactory" ref="rabbitChannelFactory"/>
         <property name="serviceInterface" value="cn.slimsmart.rabbitmq.spring.rabbitmq.demo.rpc.TestService"/>
         <property name="exchange" value="${rabbit.exchange}"/>
          <!-- 必须大写  -->
         <property name="exchangeType" value="TOPIC"/>
         <property name="routingKey" value="${rabbit.routingKey}"/>
         <!--optional-->
         <property name="mandatory" value="true"/>
         <property name="immediate" value="false"/>
         <property name="timeoutMs" value="3000"/>
         <property name="poolSize" value="10"/>
     </bean>

 </beans>

6.启动服务端代码Server.java

 package cn.slimsmart.rabbitmq.spring.rabbitmq.demo.rpc;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 public class Server {

     public static void main(String[] args) {
         new ClassPathXmlApplicationContext("applicationContext-rabbitmq-rpc-server.xml");
     }
 }

7.客户端调用代码Client.java

 package cn.slimsmart.rabbitmq.spring.rabbitmq.demo.rpc;

 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;

 public class Client {

     public static void main(String[] args) {
         ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext-rabbitmq-rpc-client.xml");
         TestService testService = (TestService) context.getBean("testService");
         System.out.println(testService.say(" Tom"));
     }
 }

先启动服务端，再运行客户端调用。

运行结果：hello  Tom