(十五)qt-tcp
基本流程
QT += core gui network
#include "tcp.h" #include "ui_tcp.h" #include <QDebug> Tcp::Tcp(QWidget *parent) : QWidget(parent), ui(new Ui::Tcp) { ui->setupUi(this); // ui init ui->ip_edit->setText("127.0.0.1"); ui->port_edit->setText("9999"); // 实例化 server = new QTcpServer(this); // 监听 server->listen(QHostAddress("127.0.0.1"),9999); // 新的链接 connect(server, &QTcpServer::newConnection, this, [=](){ // 接收客户端套接字对象 // sock_addr 结构体 == 类 QTcpSocket conn = server->nextPendingConnection(); ui->log_text->append("有新的链接"); // 接收数据 connect(conn,&QTcpSocket::readyRead, this, [=](){ QByteArray array = conn->readAll(); ui->log_text->append(array); }); }); connect(ui->send, &QPushButton::clicked, this, [=](){ // 发送数据 QTextEdit conn->write(ui->input_text->toPlainText().toUtf8()); ui->log_text->append("Me Say: " + ui->input_text->toPlainText()); ui->input_text->clear(); }); } Tcp::~Tcp() { delete ui; }
#ifndef TCP_H #define TCP_H #include <QWidget> #include <QTcpSocket> #include <QTcpServer> namespace Ui { class Tcp; } class Tcp : public QWidget { Q_OBJECT public: explicit Tcp(QWidget *parent = nullptr); ~Tcp(); private: Ui::Tcp *ui; QTcpServer *server; QTcpSocket *conn; }; #endif // TCP_H
#include "client.h" #include "ui_client.h" Client::Client(QWidget *parent) : QWidget(parent), ui(new Ui::Client) { ui->setupUi(this); // ui init ui->cip_edit->setText("127.0.0.1"); ui->cport_edit->setText("9999"); // 实例化 client = new QTcpSocket(this); // 链接服务器 client->connectToHost(QHostAddress("127.0.0.1"),9999); // 接收数据 connect(client, &QTcpSocket::readyRead, this, [=](){ QByteArray array = client->readAll(); ui->clog_text->append(array); }); connect(ui->csend, &QPushButton::clicked, this, [=](){ client->write(ui->cinput_text->toPlainText().toUtf8()); ui->clog_text->append("Me Say: " + ui->cinput_text->toPlainText().toUtf8()); ui->cinput_text->clear(); }); } Client::~Client() { delete ui; }
#ifndef CLIENT_H #define CLIENT_H #include <QWidget> #include <QTcpServer> #include <QTcpSocket> namespace Ui { class Client; } class Client : public QWidget { Q_OBJECT public: explicit Client(QWidget *parent = nullptr); ~Client(); private: Ui::Client *ui; QTcpSocket* client; }; #endif // CLIENT_H