RMI
rmi clinet:
public class RmiClient {
public static void main(String[] args) throws RemoteException, NotBoundException, MalformedURLException {
String remoteAddr = "rmi://localhost:8080/UserService";
UserService userService = (UserService) Naming.lookup(remoteAddr);
System.out.println(String.format("引用远程服务成功，当前主机:%s ", ManagementFactory.getRuntimeMXBean().getName()));
String response = userService.getName(11);
System.out.println("=======> " + response + " <=======");
}
}
/**
* @author Tommy
* Created by Tommy on 2019/12/1
**/
public class RmiRegister {
public static void main(String[] args) throws IOException {
// 本地主机上的远程对象注册表Registry的实例
LocateRegistry.createRegistry(8080);
System.out.println("======= 注册中心启动成功! =======");
System.in.read(new byte[1024]);
}
}
/**
* @author Tommy
* Created by Tommy on 2019/12/1
**/
public class RmiServer {
public static void main(String[] args) throws IOException, AlreadyBoundException {
// 创建一个远程对象
UserService hello = new UserServiceImpl();
//绑定的URL标准格式为：rmi://host:port/name
Naming.bind("rmi://localhost:8080/UserService3", hello);
System.out.println("======= 启动RMI服务注册成功! =======");
System.in.read(new byte[1024]);
}
}
/**
* @author Tommy
* Created by Tommy on 2019/12/1
**/
public interface UserService extends Remote {
String getName(Integer id) throws RemoteException;
}
/**
* @author Tommy
* Created by Tommy on 2019/12/1
**/
public class UserServiceImpl extends UnicastRemoteObject implements UserService {
protected UserServiceImpl() throws RemoteException {
}
@Override
public String getName(Integer id) {
return String.format("myName is luban :%s", ManagementFactory.getRuntimeMXBean().getName());
}
}
spi 思想:
/**
* @author Tommy
* Created by Tommy on 2019/12/1
**/
public class Main {
public static void main(String[] args) {
Iterator<UserService> iterator = ServiceLoader.load(UserService.class).iterator();
UserService service = iterator.next();
System.out.println(service.getName(11));
// Class.forName("com.mysql.jdbc.Driver");
// DriverManager.getConnection("");
}
}
public interface UserService {
public String getName(int id);
}
/**
* @author Tommy
* Created by Tommy on 2019/12/1
**/
public class UserServiceImpl implements UserService {
@Override
public String getName(int id) {
return "luban good ";
}
}