Qt在多线程中使用QTcpSocket碰见的有关问题

class FileRecvThread : public QThread{    Q_OBJECTpublic:    explicit FileRecvThread(QObject *parent = 0);    FileRecvThread(quint32, QObject *parent = 0);    ~FileRecvThread();    void initSignalSlots();    void setPort(quint32 port);    quint32 getPort();     void dealShackHand(QByteArray *);    void replyExpectShackHand();protected:    void run();private:    quint32 port;    QTcpServer *pTcpServer;    QTcpSocket *pTcpSocket;public slots:    void startTcpServer();    void dealNewConnection();    void dealDatagram();FileRecvThread::FileRecvThread(quint32 port, QObject *parent) :    QThread(parent){    this->port = port;}void FileRecvThread::startTcpServer(){    if (!this->pTcpServer)    {        this->pTcpServer = new QTcpServer;        this->pTcpServer->listen(QHostAddress::Any, this->port);    }    else    {        this->pTcpServer->listen(QHostAddress::Any, this->port);    }}void FileRecvThread::run(){    this->startTcpServer();    this->initSignalSlots();    this->exec();}void FileRecvThread::initSignalSlots(){    connect(this->pTcpServer, SIGNAL(newConnection()), this, SLOT(dealNewConnection()));}void FileRecvThread::dealNewConnection(){    this->pTcpSocket = this->pTcpServer->nextPendingConnection();    connect(this->pTcpSocket, SIGNAL(readyRead()), this, SLOT(dealDatagram()));}void FileRecvThread::dealDatagram(){    QByteArray byteArray = this->pTcpSocket->readAll();    //这里出现问题    [color=#FF0000]this->pTcpSocket->write(QByteArray("deal"));[/color]}