如果服务器是远程的(与客户端不在同一台机器上),我很困惑客户端如何连接到服务器。我的代码使用本地主机工作正常,但我无法弄清楚客户端如何实际连接到服务器主机,以便它查找rmiregistry。我很困惑什么被存储在服务器的注册表中,是Sample还是localhost?这可能是愚蠢的,但我试图将localhost转换为其在客户端的ipaddress,并做String url =“//”+ server +“:”+ 1099 +“/ Sample”;其中服务器是来自getbyname()的ip,但我得到一个异常:java.rmi.NotBoundException:127.0.0.1:1099/Sample 这是两台机器上的客户端和服务器。我只是想弄清楚两者如何远程连接,但它甚至不能使用localhost的ip地址在同一台机器上工作。连接客户端服务器RMI
客户:
import java.net.InetAddress;
import java.rmi.Naming;
import java.rmi.RemoteException;
public class SampleClient {
public static void main(String args[]) {
String url = "//" + "localhost" + ":" + 1099 + "/Sample";
SampleInterface sample = (SampleInterface)Naming.lookup(url);
} catch(Exception e) {
System.out.println("SampleClient exception: " + e);
}
}
}
服务器:
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.RMISecurityManager;
import java.rmi.server.UnicastRemoteObject;
public class SampleServer {
public static void main(String args[]) throws IOException {
// Create and install a security manager
if (System.getSecurityManager() == null)
System.setSecurityManager(new RMISecurityManager());
try {
String url = "//localhost:" + 1099 + "/Sample";
System.out.println("binding " + url);
Naming.rebind(url, new Sample());
// Naming.rebind("Sample", new Sample());
System.out.println("server " + url + " is running...");
}
catch (Exception e) {
System.out.println("Sample server failed:" + e.getMessage());
}
}
}