如何确保Producer
和Consumer
各自使用相同的套接字与服务器通信?或者,也许,另一个类应该处理套接字连接?生产者和消费者在客户端上 。
似乎套接字连接被绑定到Producer
和Consumer
,这样它们似乎无法解开,所以,虽然我想把连接放到第三个上课,我不知道该怎么做。
我非常喜欢Producer
和Consumer
的这种模式,只是我不知道如何在客户端代码的约束下实现它,以便与服务器的所有套接字通信都通过单个套接字。
我想可能会发送/检索唯一标识符,但这会使服务器过于复杂。
代码:
package net.bounceme.dur.client;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.Socket;
import java.util.concurrent.BlockingQueue;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.bounceme.dur.data.State;
import net.bounceme.dur.data.Title;
public class Producer implements Runnable {
private final BlockingQueue<Title> queue;
private final String server = "localhost";
private final int portNumber = 8080;
public Producer(BlockingQueue<Title> q) {
this.queue = q;
}
private Title connect() throws IOException, ClassNotFoundException {
Socket socket = new Socket(server, portNumber);
Title title = null;
State state = State.undefined;
ObjectInputStream objectInputStream = new ObjectInputStream(socket.getInputStream());
title = (Title) objectInputStream.readObject();
return title;
}
@Override
public void run() {
try {
connect();
} catch (IOException | ClassNotFoundException ex) {
Logger.getLogger(Producer.class.getName()).log(Level.SEVERE, null, ex);
//exit?
}
}
}
消费者:
package net.bounceme.dur.client;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.net.Socket;
import java.util.concurrent.BlockingQueue;
import java.util.logging.Level;
import java.util.logging.Logger;
import net.bounceme.dur.data.State;
import net.bounceme.dur.data.Title;
public class Consumer implements Runnable {
private final BlockingQueue<Title> queue;
private final String server = "localhost";
private final int portNumber = 8080;
public Consumer(BlockingQueue<Title> q) {
this.queue = q;
}
private void consume() throws IOException, ClassNotFoundException, InterruptedException {
Socket socket = new Socket(server, portNumber);
Title title = queue.take();
title.setState(State.x);
ObjectOutputStream objectOutputStream = new ObjectOutputStream(socket.getOutputStream());
objectOutputStream.writeObject(title);
}
@Override
public void run() {
try {
consume();
} catch (IOException | ClassNotFoundException | InterruptedException ex) {
Logger.getLogger(Consumer.class.getName()).log(Level.SEVERE, null, ex);
//exit?
}
}
}
改编自:
http://www.journaldev.com/1034/java-blockingqueue-example-implementing-producer-consumer-problem
答案 0 :(得分:1)
您需要创建一个Socket
并共享InputStream
和OutputStream
,每个一个(取决于哪个正在阅读以及哪个正在写入服务器)。< / p>
您的consume()
方法也不应该初始化任何内容,它应该准备好所有内容,以便它可以读取数据并对其进行处理。您的示例代码会显示实际创建新Socket
和新ObjectOutputStream
的方法,只应创建一次。
Socket s = new Socket(server, port);
InputStream in = s.getInputStream();
OutputStream out = s.getOutputStream();
consumer.setStream(in); // Or vice-versa
producer.setStream(out); // You can also provide it as a constructor argument