在写一个多线程的UDP程序，想在服务器的一个端口上监听数据，每收到一个数据包的时候把数据提取出来丢给一个子线程去处理，处理完之后子线程返回一个返回数据给主程序，然后从该端口上把返回数据发回去，请问该怎么设计才能实现这个目的？怎么让主程序知道子线程已经处理完了呢？
下面是我的主程序，每收到一个数据就交给ServerSubThread_UDP子线程去处理，现在就是不知道怎么把子线程处理完的数据交给主程序。
- Java code
InetAddress bind_addr = InetAddress.getByName(DNSServer_UDP.BIND_ADDRESS); serverSocket = new DatagramSocket(DNSServer_UDP.BIND_PORT, bind_addr); while (bListerning) { System.out.println("\nUDP Listening...\n"); byte receiveData[] = new byte[DNSServer_UDP.PACKETBUFFSIZE]; DatagramPacket receivePacket = new DatagramPacket(receiveData, DNSServer_UDP.PACKETBUFFSIZE); // Receive a packet serverSocket.receive(receivePacket); // Print client IP and port System.out.println("Accept one: IP = " + receivePacket.getAddress().getHostAddress() + ", Port = " + receivePacket.getPort()); // Get the data ONSRecordAction recordAction = new ONSRecordAction(); ByteArrayInputStream bin = new ByteArrayInputStream(receiveData); ObjectInputStream oin = new ObjectInputStream(bin); recordAction = (ONSRecordAction)oin.readObject(); bin.close(); oin.close(); // Process the request in a new thread and keep listening in the port to get new packet new ServerSubThread_UDP(recordAction, receivePacket.getAddress().getHostAddress(), receivePacket.getPort()).start(); } }------解决方案--------------------
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