求救：socket服务程序僵死，急

Question

我的程序运行一段时间，就会僵死（就是进程还在，不处理任何客户端请求），求高人指点迷津！！！我的服务程序如下：
public class Server {    protected String SocketPort; // 监听的socket端口号
    private int count = 0; //计数器  08.12.24
    /**
     * @param SocketPort--socket端口号
     */
    public Server(String SocketPort) {
        this.SocketPort = SocketPort;
    }    // 启动线程
    public void start() {
        DBCall db = null;
        try {
            ServerSocket Server = new ServerSocket(Integer
                    .parseInt(this.SocketPort));
            db = new DBCall();
            db.getConnection();
            while (true) {
                Socket s = Server.accept();
                ServerThread st = new ServerThread(s, db);
                st.start();
            }        } catch (Exception ex) {
            ex.printStackTrace();        } finally {
            if (db != null) {
                db.closeConnection();
            }
        }
    }    // 内部线程类
    class ServerThread extends Thread {
        private Socket socket = null;        private DBCall db = null;//数据库连接，长连接        protected InputStream streamReader;        protected BufferedReader reader;        ServerThread(Socket s, DBCall db) {
            this.socket = s;
            this.db = db;
        }
        /*
         * (non-Javadoc)
         *
         * @see java.lang.Thread#run()
         */
        public void run() {
            Object obj = new Object();
            synchronized (obj) {
                while (true) {
                    if (Counter.parse()) {
                        Counter.add();
                        break;
                    } else {
                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException ex1) {
                        }
                        continue ;
                    }
                }
            }
            int localCount = 0;
            SimpleDateFormat sdf = new SimpleDateFormat("",
                    Locale.SIMPLIFIED_CHINESE);
            sdf.applyPattern("yyyy-MM-dd HH:mm:ss");
            String context = "";
            File f = null;
            if ("1".equals(NodeName.LOGFLAG)) {
                f = new File(NodeName.LOGPATH);
            }
            //File f = new File("c:\\socketInfo.txt");
            try {
                //// 08.12.24
                if (count == 10000) {
                    count = 0;
                }
                count++;
                localCount = count;
                FileWriter fw = null;
                BufferedWriter bw = null;
                if ("1".equals(NodeName.LOGFLAG)) {
                    if (!f.exists()) {
                        f.createNewFile();
                        if (!f.exists()) {
                            System.out.println("建立socketInfo.txt文件失败！");
                        }
                    }
                    fw = new FileWriter(f, true);
                    bw = new BufferedWriter(fw);                    Date d = new java.sql.Date(System.currentTimeMillis());
                    String timeStr = sdf.format(d);
                    System.out.println("NO" + localCount +
                                       ":go in ServerScocke=" +
                                       timeStr);                    bw.write("\r\n");
                    context = "NO" + localCount + ":go in ServerScocke=" +
                              timeStr;
                    bw.write(context);
                    bw.flush();                }
                //// 08.12.24
                streamReader = socket.getInputStream();                reader = new BufferedReader(new InputStreamReader(streamReader,
                        "UTF-8"));                String msg = "";
                StringBuffer msgBuffer = new StringBuffer();
                while ((msg = reader.readLine()) != null) {
                    msgBuffer.append(msg);
                }                String phone = ParseXMLStr.parse(msgBuffer.toString(),
                                                 NodeName.node1);
                String fmt = ParseXMLStr.parse(msgBuffer.toString(),
                                               NodeName.node2);
                String data = ParseXMLStr.parse(msgBuffer.toString(),
                                                NodeName.node3);                boolean result = false;
                try {
                    if (db.con == null) {
                        db.getConnection();
                    }
                    result = db.callprodure(phone, fmt, data, localCount);
                    if (result) {
                        System.out.println("sucessfully" + " phone:" + phone
                                           + " fmt: " + fmt + " data: " + data);
                    } else {
                        System.out.println("error" + " phone:" + phone
                                           + "  fmt: " + fmt + " data: " + data);
                    }
                } catch (SQLException e) {
                    e.printStackTrace();
                }            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    reader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                try {
                    streamReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                try {
                    socket.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            Counter.sub();
        }
    }1其中重要的Counter类如下：public class Counter {
    public static int counter=0;
    public static int max=new Integer(NodeName.THREADNUM).intValue();
    public synchronized static boolean parse(){
        if(Counter.counter < Counter.max){
            return true;
        }else{
            return false;
        }
    }
    public synchronized static void add(){
         Counter.counter += 1;
    }
    public synchronized static void sub(){
        Counter.counter-=1;
    }
}是不是Counter类中的conuter变量并发引起的啊？？？
高人指点啊，事情紧急，

Answer 1

如果是不接受请求的话，有可能是主线程挂了，而 ServerThread 又不是守护线程（daemon），所以出现进程在运行，却不接受请求的现象。如果这个程序是在命令行下运行的话，到后来应该会看到主线程输出异常信息。

Answer 2

package qqserver;
import java.net.*;
import java.io.*;
public class oneServerThread extends Thread{//发送数据
    private Socket s;
    private QQServerFrame QQ;
    public oneServerThread(Socket s,QQServerFrame QQ) {
        this.s=s;
        this.QQ=QQ;
    }
    public void run(){
        try{
            String info=QQ.txtUserSend.getText();
            BufferedReader in=new BufferedReader(new InputStreamReader(System.in,info));
            PrintWriter out=new PrintWriter(s.getOutputStream());
            while(true){
                String str=in.readLine();
                out.println(str);
                QQ.txtInfoShow.append(str+"\n");
                if(str.equals("bye")){
                    break;
                }
            }
         in.close();
         out.close();
        }catch(Exception se){
            se.printStackTrace();
        }
    }
}
----------------------------
package chatqq;import java.net.*;
import java.io.*;
public class ClientThread extends Thread{//接Server 数据
    private PrintWriter out = null;
    private Socket s = null;
    private BufferedReader in;
    private String str=null;
    private QQClientFrame QQ=null;
    public ClientThread(Socket s,QQClientFrame QQ){
        this.s = s;
        this.QQ=QQ;
    }
    public void run(){
        try {
                in = new BufferedReader(new InputStreamReader(s.getInputStream()));
                out = new PrintWriter(s.getOutputStream(),true);
                out.println(str);
                while(true){
                    str=in.readLine();
                    if(str.equals("bye")){
                        str="client from Server1"+str;
                        out.println(str);
                        QQ.txtInfoShow.append(str+"\n");
                        break;
                    }else{
                        str="client from Server2"+str;
                        out.println(str);
                        QQ.txtInfoShow.append(str+"\n");
                    }
                    this.stop();
                }
                in.close();
                out.close();
                s.close();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }    }}看看这个就OK了..