使用readUTF的EOFException DataInputStream

Question

我编写了一个监听客户机的简单服务器，当客户机连接时，它打开一个Datainputstream，读取从客户机发送的所有数据（我的客户机wirte UTF数据）。

    @Override
public void run() {
    // TODO Auto-generated method stub  
    try {           
        ServerSocket ss = new ServerSocket(7000);
        while(true){
        System.out.println("Il Server sta cercando Connessioni");
        Socket s = ss.accept();
        System.out.println("Il Server ha accettato un Client");

        Thread t2 = new Thread(new Runnable(){
            public void run(){             
                   try {
                    while(true){
                    DataInputStream dis = new DataInputStream(s.getInputStream());
                    isAlreadyOpened = true;                     
                    System.out.println(dis.readUTF());
                    }

                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    isAlreadyOpened = false;
                }  
            }           
        });
        if(!isAlreadyOpened){
        t2.start();
        }
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

 @Override
public void onClick(View v) {
    try {
        DataOutputStream out = new DataOutputStream(s.getOutputStream());
        out.writeUTF("Testiamo sto socket");
        out.flush();
        out.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

}

Il Server sta cercando Connessioni
Il Server ha accettato un Client
Il Server sta cercando Connessioni
Testiamo sto socket
java.io.EOFException
   at java.io.DataInputStream.readUnsignedShort(Unknown Source)
   at java.io.DataInputStream.readUTF(Unknown Source)
   at java.io.DataInputStream.readUTF(Unknown Source)

Answer 1

您正在发送一个字符串，然后关闭连接。您正在尝试读取无限多个字符串。他们没有被派去。相反，您得到的是预期的EOFException.

这里没有问题要解决。如果您需要通过同一个连接发送更多字符串，请不要在发送一个后关闭它。