Java客户端服务器

Question

这个问题困扰了我整整一天，我找不到它的修复程序。我正在用Java写一个聊天应用程序。问题是服务器无法向客户端发送消息，而只能接收消息。这是我的问题类：

服务器类：

public class Server implements Runnable {
static InetAddress address;
static ArrayList<Integer> clients=new ArrayList<Integer>();
static ArrayList<Socket> socs=new ArrayList<>();
static String message="";
static DataOutputStream toClient;
static  ServerSocket socket;
static Socket socketNew;
static boolean running=false;
public Server(InetAddress address){
    this.address=address;

}
public static void main(String[] args) throws IOException
{
    socket=new ServerSocket(8000);
    System.out.println("Server started on port 8000");
    running=true;

    while(true)
    {   
        socketNew=socket.accept();
        socs.add(socketNew);
        address=socketNew.getInetAddress();

        System.out.println("connected to client at address: "+address);

        Server server=new Server(address);
        new Thread(server).start();


    }
}


public void run() {

    {
    try {
        BufferedReader br = new BufferedReader(new InputStreamReader(socketNew.getInputStream()));
        String message=br.readLine();
        System.out.println(message);
        for(Socket s:socs)      //sending the above msg. to all clients
        {
            OutputStream os=os = s.getOutputStream();
            PrintWriter pw = new PrintWriter(os, true);
            pw.write(message);
            pw.flush();

        }
    } catch (IOException e) {

        e.printStackTrace();
    }
    }

    }
private void message() {


}       


}

这是我的客户舱的相关功能：

private void receive_data()
    {
        BufferedReader br;
        try {
            br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            String message=br.readLine();
            console(message);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }



    }
private void send_data() {

    OutputStream os;
    try {
        os = socket.getOutputStream();
        PrintWriter pw = new PrintWriter(os, true);
        pw.println(this.name+": "+textField.getText());
        pw.flush();
        textField.setText("");
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }




}

另外，服务器在发出第一条消息后停止接收来自客户端的任何消息。我认为可以通过将while（）方法的内容包含在while循环内的服务器类中来解决此问题，但这会引发异常。以上问题的解决方案？

Answer 1

public void run() {
    try {
        BufferedReader br = new BufferedReader(new InputStreamReader(socketNew.getInputStream()));
        String message;
        PrintWriter out;

        while ((message = br.readLine()) != null) {
            for (Socket s : socs) // sending the above msg. to all clients
            {
                out = new PrintWriter(s.getOutputStream(), true);
                out.println(message);
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}

妳去 在一个小客户的测试下，我很快就写了自己，并且可以正常工作。

而且您绝对应该对代码格式进行操作。 （主要是那些没有理由的范围括号。）