運行截圖如下：

302重定向

QTcp
一般步驟
1.connectToHost連接服務器
2.響應connected信號，write數據

3.響應readyRead,read數據

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代碼如下：

tcp.pro

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QT += core network QT -= gui CONFIG += c++11 TARGET = tcp CONFIG += console CONFIG -= app_bundle TEMPLATE = app SOURCES += main.cpp \ client.cpp HEADERS += \ client.h

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client.h

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#ifndef CLIENT_H #define CLIENT_H #include <QObject> #include <QTcpSocket> class Client : public QObject { Q_OBJECT public: explicit Client(QObject *parent = 0); ~Client(){} void startConnect(QString host,quint16 port); protected slots: void onConnected(); void onReadyRead(); private: QTcpSocket *m_socket; }; #endif // CLIENT_H

client.cpp

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#include "client.h" #include <QDebug> Client::Client(QObject *parent) : QObject(parent),m_socket(0) { } void Client::startConnect(QString host, quint16 port){ m_socket=new QTcpSocket(this); connect(m_socket,SIGNAL(connected()),this,SLOT(onConnected())); connect(m_socket,SIGNAL(readyRead()),this,SLOT(onReadyRead())); m_socket->connectToHost(host,port); } void Client::onConnected(){ m_socket->write("GET / HTTP/1.1\r\n\r\n"); } void Client::onReadyRead(){ QString msg=m_socket->readAll(); qDebug()<<msg; }

main.cpp

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#include <QCoreApplication> #include "client.h" int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); Client client; client.startConnect("www.baidu.com",80); return a.exec(); }

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