这里记录一下在写一个普通的SocketServer中遇到问题，就是当readLine的时候，迟迟获取不到由客户端发来的请求，in.readLine，一直堵塞，原因是因为客户端发信息的时候，只发里内容，而缺少了换行符 write.write("hello\n");

这里是客户端

public class ClientMain {
    public static void main(String[] args) {
        try {
            Socket socket = new Socket("localhost", 9898);
            BufferedWriter write=new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
            while(true) {
                
                write.write("hello\n");
                write.flush();
                Thread.sleep(10000);
            }
        } catch (UnknownHostException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
    }
}

 

这是服务端

public class SocketServerMain {

    public static void main(String[] args) {
        ServerSocket ss = null;
        try {

            ss = new ServerSocket(9898);
            System.out.println("打开9898端口，正等待链接...");
            Socket socket = ss.accept();
            System.out.println("链接成功");
            boolean close = false;
            BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            while (!close) {
                System.out.println("等待接受信息...");
                String fromClient = in.readLine();
                System.out.println("Client say : " + fromClient);
            }

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            if (ss != null) {
                try {
                    ss.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }

        }

    }
}