qt网络通讯出现中文乱码

转自：https://blog.csdn.net/i_fuqiang/article/details/21174227

发送：

void TcpS::btn_send()
{
     QByteArray datasend = ui->textEdit->toPlainText().toLocal8Bit();
     m_tcpsocket->write(datasend);
}

接收：

void TcpS::read_datagram()
{
    QByteArray dataread = m_tcpsocket->readAll();
    QString str = QString::fromLocal8Bit(dataread);
    ui->textBrowser->insertPlainText(str+"\n");
}