Multithreading 写入QTcpSocket失败，出现不同的线程错误

我创建了一个简单的线程化TCP服务器，它收集从套接字读取的3行数据，然后尝试将它们回显到套接字。下面的函数echoCommand崩溃

#include "fortunethread.h"
#include <QtNetwork>
#include <QDataStream>

FortuneThread::FortuneThread(int socketDescriptor, QObject *parent)
    : QThread(parent), socketDescriptor(socketDescriptor), in(0)
{
}

void FortuneThread::run()
{
    tcpSocketPtr = new QTcpSocket;
    if (!tcpSocketPtr->setSocketDescriptor(socketDescriptor)) {
        emit error(tcpSocketPtr->error());
        return;
    }
    in = new QDataStream(tcpSocketPtr);
    connect(tcpSocketPtr, SIGNAL(readyRead()), this, SLOT(readCommand()) );
    QThread::exec();
}

void FortuneThread::echoCommand()
{
    QString block;
    QTextStream out(&block, QIODevice::WriteOnly);
    for (QStringList::Iterator it = commandList.begin(); it != commandList.end(); ++it) {
        out << "Command: " << *it << endl;
    }

    out << endl;
    tcpSocketPtr->write(block.toUtf8());
    tcpSocketPtr->disconnectFromHost();
    tcpSocketPtr->waitForDisconnected();
}

void FortuneThread::readCommand()
{
    while (tcpSocketPtr->canReadLine())
    {
        commandList << (tcpSocketPtr->readLine()).trimmed();
    }

    if (commandList.size() > 2)
    {
        echoCommand();
    }
}

因为我在run（）函数中创建了tcpSocketPtr，所以我知道它与这个函数在同一个线程中。为什么套接字写入会失败？我应该指出，写操作是成功的，因为我在telnet窗口上看到了输出…但是套接字写操作仍然失败

---

更多信息…我发现我不应该在QThread中放置插槽..不确定如何解决此问题，但下面是我的类定义：

class FortuneThread : public QThread
{
    Q_OBJECT

public:
    FortuneThread(int socketDescriptor, QObject *parent);
    void run();

signals:
    void error(QTcpSocket::SocketError socketError);

private slots:
    void readCommand();

private:
    void echoCommand();
    int socketDescriptor;
    QDataStream *in;
    QStringList commandList;
    QTcpSocket *tcpSocketPtr;

};

---

如何在run方法中创建指针？你能给我看一下相关的线路吗？这个tcpSocketPtr是您的FortuneThread类的成员吗？是的-FortuneServer.h文件定义了这个类，并且有私有成员：“QTcpSocket*tcpSocketPtr；”我们需要查看更多代码，Michelle。如何将插槽连接到其信号，如何准确构造堆对象等？我添加了第二个文件，用于启动线程并连接第一个插槽/信号，而第一个文件（运行中）连接readyRead的插槽/信号。建议不要继承

QThread

类<代码>QThead*T1=新的QThread（）；T1->start（）；对象->移动到线程（T1）更好

**QObject: Cannot create children for a parent that is in a different thread.
(Parent is QNativeSocketEngine(0x7f19cc002720), parent's thread is FortuneThread(0x25411d0), current thread is QThread(0x220ff90)**

class FortuneThread : public QThread
{
    Q_OBJECT

public:
    FortuneThread(int socketDescriptor, QObject *parent);
    void run();

signals:
    void error(QTcpSocket::SocketError socketError);

private slots:
    void readCommand();

private:
    void echoCommand();
    int socketDescriptor;
    QDataStream *in;
    QStringList commandList;
    QTcpSocket *tcpSocketPtr;

};