RED5 中使用Spring RMI

由于RED5本身就基于spring的,所以在其上结合spring使用rmi是很简单的!

由于red5中已经存在spring的以下一些包,此文章是基本red5版本 : 1.0.0-rc

, 要使用rmi需要加入以下两个包:

加包时请根据red5版本选择正确的包(不要问我哪个版本对应哪些包,自己试吧)

ok ,准备工作完成

先写客户端和服务都需要的接口吧:

package org.freechat.chatserver.rmi;

public interface TestRMI {

	public void test();
}

接口实现:

package org.freechat.chatserver.rmi;

public class TestRMIImple implements TestRMI {

	@Override
	public void test() {
		System.out.println("rmi调用成功");

	}

}

添加以下spring配置: 

spring-rmi-exporter.xml 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
	<bean id="testBean" class="org.freechat.chatserver.TestBean"></bean>

	<bean id="testRMI" class="org.freechat.chatserver.rmi.TestRMIImple">
	</bean>

	<bean id="balanceChessGameServiceExporter" class="org.springframework.remoting.rmi.RmiServiceExporter">
		<property name="service">
			<ref bean="testRMI" />
		</property>
		<property name="serviceName">
			<value>testRMI</value>
		</property>
		<property name="serviceInterface">
			<value>org.freechat.chatserver.rmi.TestRMI
			</value>
		</property>
		<property name="registryPort">
			<value>1199</value>
		</property>
		<property name="servicePort">
			<value>2899</value>
		</property>
	</bean>

</beans>

以上配置将org.freechat.chatserver.rmi.TestRMI接口暴露为名为testRMI的远程服务, 服务端实现类为org.freechat.chatserver.rmi.TestRMIImple

在red5配置文件red5-web.xml中引入以上配置,即red5-web.xml中添加

<import resource="classpath:/spring-bean.xml" />

将应用部署到red5下,启动red5将看到以下信息:

ok, rmi注册成功..

接下来写客户端测试下:

首先配置远程rmi:

rmi.xml :

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING/DTD BEAN/EN" 
  "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>

	<bean id="testRed5RMI" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
		<property name="serviceUrl">
			<value>rmi://192.168.1.16:1199/testRMI</value>
		</property>
		<property name="serviceInterface">
			<value>org.freechat.chatserver.rmi.TestRMI</value>
		</property>
	</bean>
</beans>

测试类:

import org.freechat.chatserver.rmi.TestRMI;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		ApplicationContext context = new ClassPathXmlApplicationContext("rmi.xml");
		TestRMI testRMI = (TestRMI) context.getBean("testRed5RMI");
		testRMI.test();
	}

}

运行, red5控制台下看到:  

rmi调用成功

注意 事项:

rmi注册时默认注册到hostname : 0.0.0.0上, 本机调用肯定没问题, 要是客户端在不同机器上,或服务端多ip时,客户端调用可能会有以下错误 

java.rmi.ConnectException: Connection refused to host: 0.0.0.0;

这时应该在rmi注册前设置 系统变量:

System.setProperty("java.rmi.server.hostname", "192.168.1.212");指明注册的hostname

在red5中, 可在application启动时设置 ,即 start方法中加入以上语句;

网上也有说 在org.springframework.remoting.rmi.RmiServiceExporter暴露服务时,指定registryHost,即设置属性:

	<bean id="balanceChessGameServiceExporter" class="org.springframework.remoting.rmi.RmiServiceExporter">
		<property name="service">
			<ref bean="testRMI" />
		</property>
		<property name="serviceName">
			<value>testRMI</value>
		</property>
		<property name="serviceInterface">
			<value>org.freechat.chatserver.rmi.TestRMI
			</value>
		</property>
		<property name="registryPort">
			<value>1199</value>
		</property>
		<property name="servicePort">
			<value>2899</value>
		</property>
		<property name="registerHost">
			<value>192.168.1.212</value>
		</property>
	</bean>

但是我试了n次, 连注册时都报错了,希望高手指点,错误如下:

 

er' defined in class path resource [spring-bean.xml]: Invocation of init method
failed; nested exception is java.rmi.ConnectException: Connection refused to hos
t: 192.168.1.212; nested exception is:
        java.net.ConnectException: Connection refused: connect
        at org.springframework.beans.factory.support.AbstractAutowireCapableBean
Factory.initializeBean(AbstractAutowireCapableBeanFactory.java:1420)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBean
Factory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBean
Factory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getOb
ject(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistr
y.getSingleton(DefaultSingletonBeanRegistry.java:222)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBe
an(AbstractBeanFactory.java:288)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean
(AbstractBeanFactory.java:190)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.
preInstantiateSingletons(DefaultListableBeanFactory.java:580)
        at org.springframework.context.support.AbstractApplicationContext.finish
BeanFactoryInitialization(AbstractApplicationContext.java:895)
        at org.springframework.context.support.AbstractApplicationContext.refres
h(AbstractApplicationContext.java:425)
        at org.red5.server.tomcat.TomcatLoader$2.run(TomcatLoader.java:774)
Caused by: java.rmi.ConnectException: Connection refused to host: 192.168.1.212;
 nested exception is:
        java.net.ConnectException: Connection refused: connect
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:601)
        at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198
)
        at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
        at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
        at sun.rmi.registry.RegistryImpl_Stub.list(Unknown Source)
        at org.springframework.remoting.rmi.RmiServiceExporter.testRegistry(RmiS
erviceExporter.java:420)
        at org.springframework.remoting.rmi.RmiServiceExporter.getRegistry(RmiSe
rviceExporter.java:331)
        at org.springframework.remoting.rmi.RmiServiceExporter.prepare(RmiServic
eExporter.java:268)
        at org.springframework.remoting.rmi.RmiServiceExporter.afterPropertiesSe
t(RmiServiceExporter.java:229)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBean
Factory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBean
Factory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417)
        ... 10 more
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
        at java.net.Socket.connect(Socket.java:519)
        at java.net.Socket.connect(Socket.java:469)
        at java.net.Socket.<init>(Socket.java:366)
        at java.net.Socket.<init>(Socket.java:180)
        at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirect
SocketFactory.java:22)
        at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMaster
SocketFactory.java:128)
        at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595)
        ... 20 more

好了 完了 注你成功!