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Client.java
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127 lines (112 loc) · 4.04 KB
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package com.hlkj.baojin;
import java.io.*;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.concurrent.ConcurrentHashMap;
/**
* C/S架构的客户端对象，持有该对象，可以随时向服务端发送消息。
*/
public class Client {
/**
* 处理服务端发回的对象，可实现该接口。
*/
public interface ObjectAction {
void doAction(Object obj, Client client);
}
public static final class DefaultObjectAction implements ObjectAction {
public void doAction(Object obj, Client client) {
System.out.println("处理：\t" + obj.toString());
}
}
public static void main(String[] args) throws UnknownHostException, IOException {
String serverIp = "127.0.0.1";
int port = 65432;
Client client = new Client(serverIp, port);
client.start();
}
private String serverIp;
private int port;
private Socket socket;
private boolean running = false;
private long lastSendTime;
private ConcurrentHashMap<Class, ObjectAction> actionMapping = new ConcurrentHashMap<Class, ObjectAction>();
public Client(String serverIp, int port) {
this.serverIp = serverIp;
this.port = port;
}
public void start() throws UnknownHostException, IOException {
if (running) return;
socket = new Socket(serverIp, port);
// socket.set
System.out.println("本地端口：" + socket.getLocalPort());
lastSendTime = System.currentTimeMillis();
running = true;
new Thread(new KeepAliveWatchDog()).start();
new Thread(new ReceiveWatchDog()).start();
}
public void stop() {
if (running) running = false;
}
/**
* 添加接收对象的处理对象。
*
* @param cls 待处理的对象，其所属的类。
* @param action 处理过程对象。
*/
public void addActionMap(Class<Object> cls, ObjectAction action) {
actionMapping.put(cls, action);
}
public void sendObject(Object obj) throws IOException {
ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
oos.writeObject(obj);
System.out.println("发送：\t" + obj);
oos.flush();
}
class KeepAliveWatchDog implements Runnable {
long checkDelay = 10;
long keepAliveDelay = 2000;
public void run() {
while (running) {
if (System.currentTimeMillis() - lastSendTime > keepAliveDelay) {
try {
Client.this.sendObject(new KeepAlive());
Client.this.sendObject("hello");
} catch (IOException e) {
e.printStackTrace();
Client.this.stop();
}
lastSendTime = System.currentTimeMillis();
} else {
try {
Thread.sleep(checkDelay);
} catch (InterruptedException e) {
e.printStackTrace();
Client.this.stop();
}
}
}
}
}
class ReceiveWatchDog implements Runnable {
public void run() {
while (running) {
try {
InputStream in = socket.getInputStream();
if (in.available() > 0) {
ObjectInputStream ois = new ObjectInputStream(in);
Object obj = ois.readObject();
System.out.println("接收：\t" + obj);
ObjectAction oa = actionMapping.get(obj.getClass());
oa = oa == null ? new DefaultObjectAction() : oa;
oa.doAction(obj, Client.this);
} else {
Thread.sleep(10);
}
} catch (Exception e) {
e.printStackTrace();
Client.this.stop();
}
}
}
}
}