用qt5 socket写的服务器和客户端可以连接，但客户端不能给服务器传数据

服务器头文件/widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include<QtNetwork>
class QTcpServer;
class QTcpSocket;
namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();
private slots:
    void readMessage();
    //void DataReceived();
private:
    Ui::Widget *ui;
    QTcpServer *tcpServer;
    QTcpSocket *tcpSocket;
    QString message1;
};

#endif // WIDGET_H

服务器主函数/main.cpp

 #include "widget.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();

    return a.exec();
}

服务器源文件/widget.cpp

 #include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    tcpServer=new QTcpServer(this);
   tcpServer->listen(QHostAddress::Any,6666);

    connect(tcpServer,SIGNAL(newConnection()),this,SLOT(readMessage()));
    qDebug()<<"2";


}
Widget::~Widget()
{
    delete ui;
}
void Widget::readMessage()
{
    QTcpSocket *clientConnection=tcpServer->nextPendingConnection();
    qDebug()<<"2";
    message1=clientConnection->readAll();
    qDebug()<<message1;
    ui->statusLabel->setText(message1);
    qDebug()<<"1";
}

客户端头文件/widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include<QtNetwork>
class QTcpSocket;
namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();
private slots:
    void newConnect();
    void on_pushButton_clicked();

private:
    Ui::Widget *ui;
    QTcpSocket *tcpSocket;
};

#endif // WIDGET_H

客户端主函数/main.cpp

#include "widget.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();

    return a.exec();
}

客户端源文件/widget.cpp

#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    tcpSocket=new QTcpSocket(this);

}

Widget::~Widget()
{
    delete ui;
}
void Widget::newConnect()
{

    tcpSocket->abort();
    tcpSocket->connectToHost("localhost",6666);
    qDebug()<<"631";

}
void Widget::on_pushButton_clicked()
{
    newConnect();
    tcpSocket->write("2");
}

通过调试发现，服务器和客户端可以连接，但是就是不能**从客户端向服务器**发送数据，qt入门级别，请指教，谢谢啦

http://blog.csdn.net/qq_33425353/article/details/51884225