QT 实现仿制 网络调试器(未实现连接唯一性) QT5.12.3环境 C++实现

网络调试助手：

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提前准备：在编写代码前，要在.pro工程文件中，添加network模块。

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服务端：

代码：

widget.h

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QtWidgets>
#include <QTcpServer> // 监听套接字
#include <QTcpSocket> // 通讯套接字
namespace Ui {
class Widget;
}class Widget : public QWidget
{Q_OBJECTpublic:explicit Widget(QWidget *parent = nullptr);~Widget();private slots:void on_start_button_clicked(); // 启动按钮slotvoid new_connection_slot(); // 连接slotvoid ready_read_slot(); // 可读slotvoid on_send_button_clicked(); // 发送按钮slotprivate:Ui::Widget *ui;QTcpServer *tcp_server; // 服务端QTcpSocket *tcp_socket; // socket
};#endif // WIDGET_H

widget.cpp

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent) :QWidget(parent),ui(new Ui::Widget)
{ui->setupUi(this);this->setWindowTitle("网络调试器服务端"); // 标题// 实例化监听套接字tcp_server = new QTcpServer(this);tcp_socket = nullptr;connect(tcp_server,&QTcpServer::newConnection,this,&Widget::new_connection_slot);
}Widget::~Widget()
{delete ui;
}void Widget::on_start_button_clicked()
{// 监听( bind() + listen() )if(ui->start_button->text() == "启动"){QString ip = ui->ip_edit->text(); // 读取ipQString port = ui->port_edit->text(); // 读取portif(!tcp_server->listen(QHostAddress(ip),port.toUShort())){ui->plainTextEdit->setPlainText("服务端启动失败....");}else{ui->plainTextEdit->setPlainText("服务端启动成功....");ui->start_button->setText("断开"); // 改变按钮文本}}else if(ui->start_button->text() == "断开"){tcp_server->close(); // 关闭ui->plainTextEdit->appendPlainText("服务器断开成功....");ui->start_button->setText("启动"); // 改变按钮文本}
}void Widget::new_connection_slot()
{tcp_socket = tcp_server->nextPendingConnection();QString client_ip = tcp_socket->peerAddress().toString(); // 获取客户端ip(转换成QString)quint16 client_port = tcp_socket->peerPort();ui->plainTextEdit->appendPlainText(QString("客户端 IP： %1  PORT：%2 连接成功").arg(client_ip).arg(client_port));connect(tcp_socket,&QTcpSocket::readyRead,this,&Widget::ready_read_slot);
}void Widget::ready_read_slot()
{QByteArray buf = tcp_socket->readAll(); // 读数据QString s = QString::fromLocal8Bit(buf); // 编码转换ui->plainTextEdit->appendPlainText(QString("服务端发来数据：%1").arg(QString(s))); // 显示
}void Widget::on_send_button_clicked()
{QString buf = ui->send_edit->text(); // 读数据tcp_socket->write(buf.toLocal8Bit()); // 发送数据ui->plainTextEdit->appendPlainText(QString("服务端发送数据：%1").arg(buf)); // 显示}

widget.ui

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输出：

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客户端：

代码：

widget.h

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include <QTcpSocket>
namespace Ui {
class Widget;
}class Widget : public QWidget
{Q_OBJECTpublic:explicit Widget(QWidget *parent = nullptr);~Widget();private slots:void on_start_button_clicked(); // 连接按钮slotvoid ready_read_slot(); // 可读slotvoid on_send_button_clicked(); // 发送按钮slotprivate:Ui::Widget *ui;QTcpSocket *tcp_sock; // socket
};#endif // WIDGET_H

widget.cpp

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent) :QWidget(parent),ui(new Ui::Widget)
{ui->setupUi(this);tcp_sock = new QTcpSocket(this);this->setWindowTitle("网络调试器客户端"); // 标题connect(tcp_sock,&QTcpSocket::readyRead,this,&Widget::ready_read_slot);
}Widget::~Widget()
{delete ui;
}void Widget::on_start_button_clicked()
{QString ip = ui->ip_edit->text(); // 获取ipQString port = ui->port_edit->text(); // 获取portif(ui->start_button->text() == "连接"){tcp_sock->connectToHost(ip,port.toUShort()); // 连接if(tcp_sock->waitForConnected()){ui->plainTextEdit->setPlainText("连接服务器成功...");ui->start_button->setText("断开"); // 改变按钮文本}else{ui->plainTextEdit->setPlainText("连接服务器失败...");}}else if(ui->start_button->text() == "断开"){tcp_sock->close(); // 关闭ui->plainTextEdit->appendPlainText("客户端断开成功....");ui->start_button->setText("连接"); // 改变按钮文本}
}void Widget::ready_read_slot(){QByteArray buf = tcp_sock->readAll(); // 读数据QString data = QString::fromLocal8Bit(buf); // 编码转换ui->plainTextEdit->appendPlainText(QString("服务端发来数据 %1").arg(data));
}void Widget::on_send_button_clicked()
{QString buf = ui->send_edit->text(); // 获取数据tcp_sock->write(buf.toLocal8Bit()); // 编码转换ui->plainTextEdit->appendPlainText(QString("服务端发送数据 %1").arg(buf));
}

widget.ui

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输出：

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测试：

同时打开服务端和客户端

启动服务端并连接客户端

发送文本测试

断开连接