#ifndef PROCESSION_H#define PROCESSION_H#include QWidget#include QTcpSocketnamespace Ui class Procession;class Procession public QWidget Q_OBJECTpublic explicit Processionint useridQWidget pare

#include "procession.h" #include "ui_procession.h" #include #include

Procession::Procession(int userid,QWidget *parent) : QWidget(parent), ui(new Ui::Procession), userid(userid) { ui->setupUi(this); processionWidget(); m_socket = new QTcpSocket(this); connect(ui->connectBtn, &QPushButton::clicked, this, &Procession::on_connectBtn_clicked); connect(m_socket, &QTcpSocket::readyRead, this, &Procession::readyRead); connect(m_socket, &QTcpSocket::connected, this, &Procession::connected); connect(m_socket, &QTcpSocket::disconnected,this,&Procession::disconnected); connect(m_socket, QOverloadQAbstractSocket::SocketError::of(&QTcpSocket::error), this, &Procession::displayError); }

Procession::~Procession() { delete ui; }

void Procession::processionWidget() { setWindowTitle("服务器通信"); setAutoFillBackground(true); QPalette palette=this->palette(); QPixmap pixmap(":/user/image/image/net.jpg"); palette.setBrush(QPalette::Window, QBrush(pixmap)); setPalette(palette); setFixedSize(600,400); }

void Procession::connected() { ui->message->append("连接成功"); // 发送userid给服务器 QByteArray block; QDataStream out(&block, QIODevice::WriteOnly); out << this->userid; if (m_socket->write(block) == -1) { ui->message->append("发送userid失败"); m_socket->close(); } }

void Procession::disconnected() { ui->message->append("连接失败"); m_socket->close(); }

void Procession::readyRead() { QByteArray data = m_socket->readAll(); if (data.isEmpty()) { ui->message->append("读取的数据为空"); return; } // 解析服务器返回的数据 QDataStream in(&data, QIODevice::ReadOnly); QString suggestion; in >> suggestion; // 使用重载的 >> 运算符来读取数据 if (in.status() != QDataStream::Ok) { ui->message->append("解析服务器返回的数据失败"); return; } ui->message->append(suggestion); m_socket->close(); }

void Procession::displayError(QAbstractSocket::SocketError error) { QString errorMessage; switch (error) { case QAbstractSocket::ConnectionRefusedError: errorMessage = "连接被拒绝"; break; case QAbstractSocket::RemoteHostClosedError: errorMessage = "远程主机关闭"; break; case QAbstractSocket::HostNotFoundError: errorMessage = "未找到主机"; break; case QAbstractSocket::SocketTimeoutError: errorMessage = "连接超时"; break; case QAbstractSocket::NetworkError: errorMessage = "网络错误"; break; default: errorMessage = "未知错误"; break; } ui->message->append("连接失败：" + errorMessage); }

void Procession::on_connectBtn_clicked() { if (m_socket->state() == QAbstractSocket::ConnectedState) { m_socket->disconnectFromHost(); // 先关闭套接字 }

ui->message->append("已经连接上服务器");
QString ip = ui->IP->text();
QString port = ui->port->text();

if (ip.isEmpty() || port.isEmpty()) {
    ui->message->clear();
    ui->message->append("请输入有效的IP地址和端口号");
    return;
}

ui->message->clear();
ui->message->append("正在连接中...");
m_socket->connectToHost(ip, static_cast<quint16>(ui->port->text().toInt()));