QObject:没有这样的插槽 QThread::readyRead(）

我正在尝试弄清楚如何正确使用Qt TCP套接字以及多线程。我希望，作为一个支持更复杂但类似的东西的测试项目，我将在未来尝试执行以下操作：一个简单的应用程序，它要么只侦听一个传入连接，要么连接到服务器套接字;接下来，它打印通过该套接字接收的所有内容。

连接到服务器套接字的情况（我为此使用带有 -l 选项的 netcat）工作正常：netcat 发送到我的应用程序的所有内容都正确打印。但是，当我使用我的程序侦听那个传入连接（由netcat生成）时，连接成功，但随后出现以下运行时错误：

QObject::connect: No such signal QThread::readyRead() in ..QTcpTestlistener.cpp:8

这是整个代码（不要介意我有时使用的普通C I/O，我稍后会删除它）：

[ 主要.cpp ]

#include "peer.h"
#include <QCoreApplication>
#include <QThread>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static bool askIfServer();
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    Peer *p;
    int rval;
    if (askIfServer())
        p = new Peer;
    else
        p = new Peer(false);
    rval = a.exec();
    delete p;
    return rval;
}
static bool askIfServer()
{
    bool isServer;
    char ibuf[BUFSIZ];
    fputs("Choose 'host' or 'join': ", stderr);
    fgets(ibuf, BUFSIZ, stdin);
    ibuf[strlen(ibuf) - 1] = '';
    fflush(stdin);
    if (strcmp(ibuf, "host") == 0)
        isServer = true;
    else if (strcmp(ibuf, "join") == 0)
        isServer = false;
    else
    {
        fputs("Failure.n", stderr);
        exit(-1);
    }
    return isServer;
}

[ 对等 ]

#ifndef PEER_H
#define PEER_H
#include "listener.h"
#include <QObject>
#include <QThread>
#include <QtNetwork/QTcpSocket>
#include <QtNetwork/QTcpServer>
class Peer : public QObject
{
    Q_OBJECT
public:
    static const quint16 PORT = 5483;
    explicit Peer(bool isHost = true, QString hostname = "localhost", QObject *parent = 0);
public slots:
    void acceptPeer();
private:
    bool _isHost;
    QTcpServer *_server;
    QTcpSocket *_socket;
    QThread *_lThread;
    Listener *_listener;
};
#endif // PEER_H

[ 对等.cpp ]

#include "peer.h"
Peer::Peer(bool isHost, QString hostname, QObject *parent) :
    QObject(parent),
    _isHost(isHost)
{
    if (_isHost)
    {
        _server = new QTcpServer;
        connect(_server, SIGNAL(newConnection()), this, SLOT(acceptPeer()));
        _server->listen(QHostAddress::Any, PORT);
    }
    else
    {
        _socket = new QTcpSocket;
        connect(_socket, SIGNAL(hostFound()), this, SLOT(acceptPeer()));
        _socket->connectToHost(hostname, PORT);
    }
}
void Peer::acceptPeer()
{
    disconnect(this, SLOT(acceptPeer()));
    if (_isHost)
    {
        _socket = _server->nextPendingConnection();
        delete _server;
        _server = NULL;
    }
    _lThread = new QThread;
    _listener = new Listener(_socket);
    _listener->moveToThread(_lThread);
    _lThread->start();
}

[ 听众 ]

#ifndef LISTENER_H
#define LISTENER_H
#include <iostream>
#include <QObject>
#include <QByteArray>
#include <QtNetwork/QTcpSocket>
using std::cout;
class Listener : public QObject
{
    Q_OBJECT
public:
    explicit Listener(QTcpSocket *socket, QObject *parent = 0);
public slots:
    void acceptData();
private:
    QTcpSocket *_socket;
};
#endif // LISTENER_H

[ 听众.cpp ]

#include "listener.h"
Listener::Listener(QTcpSocket *socket, QObject *parent) :
    QObject(parent),
    _socket(socket)
{
    // I guess this is where it goes wrong
    connect(_socket, SIGNAL(readyRead()), this, SLOT(acceptData()), Qt::QueuedConnection);
}
void Listener::acceptData()
{
    QByteArray data = _socket->readAll();
    cout << data.constData();
}

没有得到的是错误消息声称我尝试连接来自QThread的一些信号（我显然没有：参见listener.cpp：8）;更奇怪的是，这只发生在QTcpServer实例创建套接字时，而不是在其他情况下。我错过了什么？

编辑：已解决

看看我自己的答案。