我正在尝试将客户端系统的详细信息发送到服务器系统,但服务器没有收到everthing。一旦到达第一行,它就会停止打印。有人帮我解决了这个问题。
//服务器
void connect_clients() throws ClassNotFoundException, InterruptedException
{
try {
ServerSocket listener = new ServerSocket(7700);
jButton1.setText("Server Running!");
jButton1.setEnabled(false);
ObjectInputStream ois; // = new ObjectInputStream(socket.getInputStream());
while (true) {
socket = listener.accept();
socketList.add(socket);
ois = new ObjectInputStream(socket.getInputStream());
String message = (String) ois.readObject();
System.out.println("Message Received: " + message); */*/*this is not printing everything
}
}
catch(IOException ex)
{
JOptionPane.showMessageDialog(null, ex);
}
}
//客户端
void connect_server() throws IOException
{
try {
// TODO code application logic here
String serverAddress = JOptionPane.showInputDialog(
"Enter IP Address of a machine that is\n" +
"running the date service on port 9090:");
s = new Socket(serverAddress, 7700);
ObjectOutputStream oos = new ObjectOutputStream(s.getOutputStream());
ObjectInputStream ois = null;
BufferedReader input;
String answer;
while(true){
input =
new BufferedReader(new InputStreamReader(s.getInputStream()));
DataOutputStream dOut = new DataOutputStream(s.getOutputStream());
answer = input.readLine();
System.out.println(answer);
if(answer != null)
{
oos.reset();
String line = "";
String command = "powershell.exe Get-ItemProperty HKLM:\\Software\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\* | Select-Object DisplayName, DisplayVersion, Publisher, InstallDate | \n" +
"Format-Table –AutoSize";
// Executing the command
Process powerShellProcess = Runtime.getRuntime().exec(command);
// Getting the results
powerShellProcess.getOutputStream().close();
System.out.println("Standard Output:");
BufferedReader stdout = new BufferedReader(new InputStreamReader(
powerShellProcess.getInputStream()));
while ((line = stdout.readLine()) != null) {
byte[] mybytearray = new byte[(int) line.length()];
oos.writeObject(mybytearray);
}
stdout.close();
System.out.println("Standard Error:");
BufferedReader stderr = new BufferedReader(new InputStreamReader(
powerShellProcess.getErrorStream()));
while ((line = stderr.readLine()) != null) {
oos.writeObject(line);
System.out.println("fdg"+line);
//printing the output to a file --start
try(PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("myfile.txt", true)))) {
out.println(line);
}
catch (IOException e)
{
JOptionPane.showMessageDialog(null, e);
}
}
stderr.close();
System.out.println("Done");
}
}
}
catch (ConnectException e) {
JOptionPane.showMessageDialog(null, e);
}
catch (SocketException e) {
JOptionPane.showMessageDialog(null, e);
}
}
答案 0 :(得分:1)
您在同一个writeObject
上多次致电ObjectOutputStream
- 但在阅读代码中,您只需拨打readObject
一次
您需要循环阅读代码,例如:
while (true) {
String message = (String) ois.readObject();
System.out.println("Message Received: " + message);
}
现在,当它到达流的末尾时会抛出异常,我怀疑 - 你应该有一些标记值(例如null)来表示“数据结束”。 (我不认为 ObjectInputStream
只是为你做这件事。)
此外,在您的客户端代码中,您正在创建包含相同套接字InputStreamReader
的多个InputStream
对象 - 这是一个坏主意。
从根本上说,我认为你需要更仔细地思考服务器和客户端之间的协议 - 考虑服务器如何知道客户端何时完成一组输出,以及何时应该发送下一个输出然后尝试重新设计你的代码,这样你只需要包装任何特定的流一次(当然,那个包装器可以自己包装)。最后,在一个方向上使用ObjectInputStream
/ ObjectOutputStream
似乎很奇怪,但在另一个方向上只使用纯文本。 IMO应该很少对协议进行不对称。