使用 Java 中的套接字编程将数据流从客户端程序(在 VM 中运行)发送到服务器程序(在主机操作系统上)

Question

客户端套接字程序(在 Windows VM 中(根据以下代码生成从 1 到 10 的整数

public class ClientSocket {
public static void main(String[] args)
{
try{
InetAddress inetAddress = InetAddress.getLocalHost();
String clientIP = inetAddress.getHostAddress();
System.out.println("Client IP address " + clientIP);
Integer dataSendingPort ;
dataSendingPort = 6999 ;
Socket socket = new Socket("192.168.0.32",dataSendingPort);
String WelcomeMessage = " hello server from " + clientIP ;

BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
if(socket.isConnected()){
System.out.println("connection was successful");
}
else{
System.out.println("Error- connection was not successful");
}

for (int x= 0 ; x< 10 ; x++){
bufferedWriter.write(x);
bufferedWriter.flush();
}
bufferedWriter.close();
}
catch (IOException e){
System.out.println(e);
}// catch
finally{
System.out.println("closing connection");
}
} // main
} // class

我的服务器套接字程序作为主机在Mac OS上运行，其代码如下所示

public class MyServer {
public static void main(String[] args) throws Exception {

try {
// get input data by connecting to the socket

InetAddress inetAddress = InetAddress.getLocalHost();
String ServerIP = inetAddress.getHostAddress();
System.out.println("n server IP address = " + ServerIP);
Integer ListeningPort ;
ListeningPort = 6999 ;
ServerSocket serverSocket = new ServerSocket(ListeningPort);
System.out.println("server is receiving data on port # "+ ListeningPort +"n");
// waiting for connection form client
Socket socket = serverSocket.accept();

if(socket.isConnected()){
System.out.println("Connection was successful");
}
else {
System.out.println("connection was not successful");
}

BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
Integer s = 0 ;
while (( s = input.read()) >= 0){
System.out.println(input.read());
}
} //try
catch (IOException e)
{
System.out.println(e);
} // catch

} //main
} //socket class

问题是当我使用 while 循环并接收第一个值(即 0 而不使用循环(时，我收到的输出是 -1。

但是，

我能够将单个值从客户端发送到服务器，但是 如何从客户端发送值流并将其打印在服务器上 边。

欢迎提出建议

Answer 1

• -1 表示流结束。
关闭
• 股票的输入或输出流将关闭套接字。
• socket.isConnected()在你测试它的时候不可能是假的。
• input.ready()不是对流结束、消息结束、传输结束或任何有用的东西的测试。
• 不要在环内冲洗。