JINI学习笔记2-HelloWorld
下载安装jini
配置环境变量
<略>
<非正常操作顺序>
WinXP
开启服务
1 HTTP服务器
D:/jini2_1>java -jar lib/tools.jar -port 8080 -dir lib –verbose
2 RMI激活守护进程
D:/jini2_1>rmid -J-Dsun.rmi.activation.execPolicy=none
3 查找服务
D:/jini2_1>java -Djava.ext.dirs=lib -Djava.security.policy=configentry/all.policy -jar lib/start.jar configentry/start-reggie.config
4.编译
D:/jini2_1/helloworld/HelloWorld.java [interface]
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface HelloWorld extends Remote {
public String getMessage() throws RemoteException;
}
D:/jini2_1/helloworld/HelloWorldClient.java [class]
import java.io.IOException;
import java.rmi.RMISecurityManager;
import com.sun.jini.config.ConfigUtil;
import net.jini.core.discovery.LookupLocator;
import net.jini.core.lookup.ServiceRegistrar;
import net.jini.core.lookup.ServiceTemplate;
public class HelloWorldClient {
private ServiceRegistrar registrar;
private ServiceTemplate template;
private HelloWorld helloItem;
public HelloWorldClient() throws IOException, ClassNotFoundException{
if(System.getSecurityManager() == null){
System.setSecurityManager(new RMISecurityManager());
}
Class[] type = new Class[]{HelloWorld.class};
template = new ServiceTemplate(null,type,null);
LookupLocator locator = new LookupLocator("jini://" + ConfigUtil.getHostName());
registrar = locator.getRegistrar();
helloItem = (HelloWorld) registrar.lookup(template);
System.out.println(helloItem.getMessage());
}
public static void main(String[] args) {
try {
new HelloWorldClient();
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
}
D:/jini2_1/helloworld/HelloWorldProxy.java [class]
import java.io.Serializable;
import java.rmi.RemoteException;
import net.jini.core.lookup.ServiceID;
import net.jini.lookup.ServiceIDListener;
public class HelloWorldProxy implements Serializable, ServiceIDListener, HelloWorld {
private static final long serialVersionUID = -4111105409575620426L;
public HelloWorldProxy() throws RemoteException{
super();
}
public String getMessage() throws RemoteException {
return "Hello World!!! JINI TEST SUCCESS";
}
public void serviceIDNotify(ServiceID serviceID) {
System.out.println("ServiceID is " + serviceID);
}
}
D:/jini2_1/helloworld/HelloWorldService.java [class]
import java.io.IOException;
import java.rmi.RMISecurityManager;
import net.jini.discovery.LookupDiscovery;
import net.jini.discovery.LookupDiscoveryManager;
import net.jini.lookup.JoinManager;
public class HelloWorldService {
public HelloWorldService() throws IOException{
if(System.getSecurityManager() == null){
System.setSecurityManager(new RMISecurityManager());
}
HelloWorldProxy helloProxy = new HelloWorldProxy();
LookupDiscoveryManager ldm = new LookupDiscoveryManager(LookupDiscovery.ALL_GROUPS,null,null);
JoinManager jm = new JoinManager(helloProxy,null,helloProxy,ldm,null);
}
public static void main(String[] args) {
try {
new HelloWorldService();
Object obj = new Object();
synchronized (obj) {
obj.wait();
}
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
编译:
D:/jini2_1/helloworld>javac -classpath ../lib/jini-core.jar;../lib/jini-ext.jar;../lib/sun-util.jar; *.java
5 开启一个自己的JINI-http服务<可选>
D:/jini2_1>java -jar lib/tools.jar -port 8089 -dir helloworld –verbose
6 开启HelloWorldService服务
D:/jini2_1>java -cp lib/jini-core.jar;lib/jini-ext.jar;lib/sun-util.jar;hellowold
-Djava.rmi.server.codebase=http://COMPUTERNAME:8089/
-Djava.security.policy=configentry/all.policy
HelloWorldService
显示结果:ServiceID is 357eb6c6-1620-41d0-9738-e82c225f0ab6
7 开启HelloWorldClient服务
D:/jini2_1>java -cp lib/jini-core.jar;lib/jini-ext.jar;lib/sun-util.jar;helloworld
-Djava.security.policy=configentry/all.policy
HelloWorldClient
显示结果: Hello World!!! JINI TEST SUCCESS