Question

我正在尝试制作某种登录系统，但服务器和客户端不会互相交谈。我不太清楚为什么他们不会互相交谈，但任何帮助都表示赞赏。

P.S端口在我的路由器上正确设置。

客户端

public class Clients implements Runnable
{
String ip = "localhost";
int port = 25565;
Socket client;
static Thread thread;
boolean setup = false;
BufferedReader br;
PrintWriter pw;
public static void main(String[] args)
{
    thread = new Thread(new Clients());
    thread.start();
}
public void run()
{
    while(!setup)
    {
        try {
            client = new Socket(ip,port);
            setup = true;
        } catch (IOException e) {
            setup = false;
        }
    }
    try {
        br = new BufferedReader(new InputStreamReader(client.getInputStream()));
        pw = new PrintWriter(client.getOutputStream(),true);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    pw.flush();
    pw.write("client");
    while(true);
}
}

服务器

public class Server implements Runnable
{
int port = 25565;
String input;
ServerSocket server;
Socket clients;
BufferedReader br;
PrintWriter pw;
boolean setup = false;
static Thread thread;
public static void main(String[] args)
{
    thread = new Thread(new Server());
    thread.start();
}
public void run()
{
    try {
        server = new ServerSocket(port);
        clients = server.accept();
        br = new BufferedReader(new InputStreamReader(clients.getInputStream()));
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        System.out.println("getting input");
        while((input = br.readLine()) != null)
        {
            System.out.println(input);
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}
}

Answer 1

我看到两个问题。第一个是pw.flush之后应调用pw.write。第二个是服务器正在等待readLine()，它只会在遇到行结束时返回。您应该更改Clients以调用pw.write("clients\n")，添加换行符。

Answer 2

你应该先写，然后刷新

pw.write("client\n");
pw.flush();

同样将\ n放在您正在编写的行中，因为在您正在执行的客户端br.readline().所以它将等到新行可用。

服务器和客户端不会互相交谈

2 个答案: