java很多分布式框架都是基于远程通信技术实现的，，好像在java远程通信技术中，rmi的性能比较好，。。
rmi每次远程方法调用 是不是 多线程的了。。。。。测试了一下啊
server端
<beans>
<bean id="helloService" class="com.logcd.spring.rmi.HelloServiceImpl"/>
<!--RmiServiceExporter显示地支持使用RMI调用器暴露任何非RMI服务-->
<bean id="serviceExporter"
class="org.springframework.remoting.rmi.RmiServiceExporter">
<property name="service" ref="helloService"/>
<property name="serviceInterface"
value="com.logcd.spring.rmi.HelloService"/>
<!--定义要暴露的服务名可以与输出的bean不同名，客户端通过这个名字来调用服务-->
<property name="serviceName" value ="HelloService"/>
<!--覆盖RMI注册端口号(1099)，通常应用服务器也会维护RMI注册，最好不要冲突-->
<property name="registryPort" value="1199"/>
</bean>
client
<beans> <!--使用RmiProxyFactoryBean连接服务端 这里设置--scope="prototype"也还是单例的>
<bean id="serviceProxy"
class="org.springframework.remoting.rmi.RmiProxyFactoryBean" scope="prototype">
<property name="serviceUrl"
value="rmi://localhost:1199/HelloService"/>
<property name="serviceInterface"
value="com.logcd.spring.rmi.HelloService"/>
</bean>
<bean id="obj" class="java.lang.Object" scope="prototype">
</bean>
</beans>
server code
public String doHello(String name) {
int i = 0;
try {
Thread.sleep(1000);//每次都会sleep一秒
System.out.println(Thread.currentThread().getName());
} catch (InterruptedException e) {
e.printStackTrace();
}
return "Hello , " + name;
}
public static void main(String args[]){
ApplicationContext context= new ClassPathXmlApplicationContext(
new String[]{"rmi-server.xml"});
}
client code
public static void main(String args[]){
ApplicationContext context= new ClassPathXmlApplicationContext(
new String[]{"rmi-client.xml"});
for(int i=0;i<100;i++){
HelloService service = (HelloService)context.getBean("serviceProxy");
Object obj = context.getBean("obj");
System.out.println(service.hashCode()+"----obj=="+obj.hashCode());
System.out.println(service.doHello("logcd"));
System.out.println("----------------------"+i);
}
client 控制台打印
log4j:WARN No appenders could be found for logger (org.springframework.context.support.ClassPathXmlApplicationContext). log4j:WARN Please initialize the log4j system properly. 269856977----obj==13238549 Hello , logcd ----------------------0 269856977----obj==29131495 Hello , logcd ----------------------1 269856977----obj==14440411 Hello , logcd ----------------------2 269856977----obj==13459339 Hello , logcd ----------------------3 269856977----obj==7579563 Hello , logcd ----------------------4 269856977----obj==23255990 Hello , logcd ----------------------5 269856977----obj==9182681 Hello , logcd ----------------------6 269856977----obj==4898828 Hello , logcd ----------------------7 269856977----obj==22634321
scope="prototype" 设置了。。但是 rmi还是单利的。，，单线程的。。。
server 控制台
RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185 RMI TCP Connection(14)-10.191.72.185
说明 一个client 连接server是一个线程，，，，，，，，