问题描述
我正在编写代码以获取服务器到客户端的日期。但是当我跑步时,结果是null
。
我不明白为什么,从服务器到客户端的格式化日期也很麻烦。
我可以同步时钟,但不能同步日期。
我需要帮助:我想从服务器同步客户端上的日期和时钟
服务器:
public class ServerDemo{
public static void main(String []args) throws IOException{
ServerSocket s = new ServerSocket(50555);
int server_timeout = 10000;
s.setSoTimeout(server_timeout);
displayBanner();
System.out.println("|\n|-Server is running...");
try{
while(true){
Socket s1 = s.accept();
System.out.println("|\n|-Connection Received : " + s1);
BufferedWriter dos = new BufferedWriter(new OutputStreamWriter(s1.getOutputStream()));
SimpleDateFormat outDate = new SimpleDateFormat("dd/MM/yyyy");
//DateFormat timeFormat = new SimpleDateFormat("HH:mm:ss");
Date dt = new Date();
System.out.println(" |\n |-Sent to client : " + dt);
dos.write(outDate.format(dt) + " ");
//dos.writeChars(timeFormat.format(dt) + '\n');
System.out.println(" |\n |-Connection Terminated : " + s1);
s1.close();
dos.close();
}
} catch(SocketTimeoutException e){
System.out.println("|\nTerminating server due to timeout...");
System.out.println("Server is terminated!");
s.close();
}
}
System.out.println("[+]--Clock Synchronization Server v1.0.1--- initializing...");
}
客户
:public class ClientDemo{
public static void main(String []args) throws Exception{
Socket s = new Socket("192.168.1.190",50555);
BufferedReader InFromServer = new BufferedReader(new InputStreamReader(s.getInputStream()));
BufferedWriter OutToServer = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
String date = InFromServer.readLine();
System.out.println(date);
/*
DateFormat Format = new SimpleDateFormat("dd/MM/yyyy");
//parse the data from the server
Date serverDate = Format.parse(date);
//format the server for the Runtime commands
DateFormat newFormatDate = new SimpleDateFormat("dd-MM-yy");
String sysdate = "" + newFormatDate.format(serverDate);
System.out.println(sysdate);
*/
InFromServer.close();
s.close();
}
解决方法
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