就像在主题中一样-系统输出和错误流似乎在内核类的“更新”方法中的 catch 子句中被“冻结”。奇怪的是,当我调试项目并停在 System.out 行时,我什至可以删除突破并且一切正常。
除了最后一个 System.out 之外的所有内容都已执行,即使我替换了默认 System.out,它也不起作用。
目前,我正在建立连接后断开用户连接。
我的代码,StartServer.java:
公共类 StartServer { 公共静态无效主要(字符串[]参数){ 内核内核=新内核(4444); 内核.run(); 而(真){ kernel.update(); } } }
内核.java:
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Kernel {
ArrayList<Socket> clients;
ServerSocket socket;
public Kernel(int port) {
try {
socket = new ServerSocket(port);
clients = new ArrayList<>();
System.out.println("Server initialized");
} catch (IOException ex) {
Logger.getLogger(StartServer.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void run() {
Thread thread = new Thread(){
public void run() {
try {
while (true) {
Socket client = socket.accept();
clients.add(client);
System.out.println("New user on the server!");
}
} catch (IOException ex) {
Logger.getLogger(Kernel.class.getName()).log(Level.SEVERE, null, ex);
}
}
};
thread.start();
}
public void update() {
for (int i=0; i<clients.size(); i++) {
Socket s = clients.get(i);
try {
/*String result;
if (s.getInputStream().available()!=0) {
byte[] byteRes = new byte[s.getInputStream().available()];
char[] charRes = new char[s.getInputStream().available()];
s.getInputStream().read(byteRes);
for (int i2=0; i2<charRes.length; i2++) {
charRes[i2] = (char) byteRes[i2];
}
result = String.copyValueOf(charRes);
System.out.println(result);
}*/
throw new IOException();
} catch (IOException ex) {
try {
System.out.println("Client disconnected"); //working only in debug mode
clients.remove(s);
s.close();
i--;
} catch (IOException ex1) {
Logger.getLogger(Kernel.class.getName()).log(Level.SEVERE, null, ex1);
}
}
}
}
}