代码文件目录:
RMI:
MyRemote
package Chapter11_ProxyPattern.RMI;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface MyRemote extends Remote {
public String sayHello() throws RemoteException;
}
MyRemoteClient
package Chapter11_ProxyPattern.RMI;
import java.rmi.Naming;
public class MyRemoteClient {
public static void main(String[] args) {
new MyRemoteClient().go();
}
public void go(){
try{
MyRemote service = (MyRemote) Naming.lookup("rmi://127.0.0.1/RemoteHello");
String s = service.sayHello();
System.out.println(s);
}catch (Exception ex){
ex.printStackTrace();
}
}
}
MyRemoteImpl
package Chapter11_ProxyPattern.RMI;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
public class MyRemoteImpl extends UnicastRemoteObject implements MyRemote {
private static final long serialVersion = 1L;
public String sayHello() throws RemoteException {
return "Server says: Hey!";
}
public MyRemoteImpl()throws RemoteException{}
public static void main(String[] args) {
try{
MyRemote service = new MyRemoteImpl();
Naming.rebind("RemoteHello",service);
}catch (Exception ex){
ex.printStackTrace();
}
}
}
能够远程监控的糖果机:
在上一章的代码的基础上做一些修改文章来源:https://www.toymoban.com/news/detail-661399.html
GumballMachine
public class GumballMachine
extends UnicastRemoteObject implements GumballMachineRemote
{
private static final long serialVersionUID = 2L;
//加上地理位置支持
String location;
State soldOutState;
State noQuarterState;
State hasQuarterState;
State soldState;
State winnerState;
State state = soldOutState;
int count = 0;
public GumballMachine(String location,int numberGumballs) throws RemoteException {
soldOutState = new SoldOutState(this);
noQuarterState = new NoQuarterState(this);
hasQuarterState = new HasQuarterState(this);
soldState = new SoldState(this);
winnerState = new WinnerState(this);
this.location = location;
this.count = numberGumballs;
if (numberGumballs > 0) {
state = noQuarterState;
}
}
GumballMachineRemote
package Chapter11_ProxyPattern.Origin;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface GumballMachineRemote extends Remote {
public int getCount() throws RemoteException;
public String getLocation() throws RemoteException;
public State getState() throws RemoteException;
}
GumballMachineTestDrive
package Chapter11_ProxyPattern.Origin;
import java.rmi.Naming;
/**
* @Author 竹心
* @Date 2023/8/19
**/
public class GumballMachineTestDrive {
public static void main(String[] args) {
GumballMachineRemote gumballMachine = null;
int count;
if (args.length < 2) {
System.out.println("GumballMachine <name> <inventory>");
System.exit(1);
}
try {
count = Integer.parseInt(args[1]);
gumballMachine =
new GumballMachine(args[0], count);
Naming.rebind("//" + args[0] + "/gumballmachine", gumballMachine);
} catch (Exception e) {
e.printStackTrace();
}
}
}
GumballMonitor
package Chapter11_ProxyPattern.Origin;
import java.rmi.RemoteException;
/**
* @Author 竹心
* @Date 2023/8/20
**/
//糖果监视器
public class GumballMonitor {
GumballMachineRemote gumballMachine;
public GumballMonitor(GumballMachineRemote machine){
this.gumballMachine = machine;
}
public void report(){
try{
System.out.println("Gumball Machine: "+this.gumballMachine.getLocation());
System.out.println("Current inventory: "+this.gumballMachine.getCount()+" gumballs");
System.out.println("Current State: "+this.gumballMachine.getState());
}catch (RemoteException e){
e.printStackTrace();
}
}
}
GumballMonitorTestDrive
package Chapter11_ProxyPattern.Origin;
import java.rmi.Naming;
public class GumballMonitorTestDrive {
public static void main(String[] args) {
String[] location = {"rmi://127.0.0.1/gumballmachine",
"rmi://127.0.0.1/gumballmachine",
"rmi://127.0.0.1/gumballmachine"};
if (args.length >= 0)
{
location = new String[1];
location[0] = "rmi://" + args[0] + "/gumballmachine";
}
GumballMonitor[] monitor = new GumballMonitor[location.length];
for (int i=0;i < location.length; i++) {
try {
GumballMachineRemote machine =
(GumballMachineRemote) Naming.lookup(location[i]);
monitor[i] = new GumballMonitor(machine);
System.out.println(monitor[i]);
} catch (Exception e) {
e.printStackTrace();
}
}
for (int i=0; i < monitor.length; i++) {
monitor[i].report();
}
}
}
五个状态类:
同样的修改:文章来源地址https://www.toymoban.com/news/detail-661399.html
public class HasQuarterState implements State {
private static final long serialVersionUID = 2L;
Random randomWinner = new Random(System.currentTimeMillis());
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