Qt之QTcpServer/QTcpSocket简单收发信息（1）

用QT包装好的东西做socket类东西，我只能说啥这么简单呢。

waitForConnected() 等待链接的建立
waitForReadyRead() 等待新数据的到来
waitForBytesWritten() 等待数据写入socket
waitForDisconnected() 等待链接断开

开始前在项目.pro里面添加如下：

QT += core guinetwork用QT包装好的东西做socket类东西，我只能说啥这么简单呢。
waitForConnected() 等待链接的建立
waitForReadyRead() 等待新数据的到来
waitForBytesWritten() 等待数据写入socket
waitForDisconnected() 等待链接断开
开始前在项目.pro里面添加如下：
QT += core guinetwork
=========server==============
[cpp] view plaincopyprint?
#include "testnet.h"
#include "ui_testnet.h"
#include <QtGui>
Testnet::Testnet(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::Testnet)
{
ui->setupUi(this);
this->connect(ui->pushButton_start,SIGNAL(clicked()),this,SLOT(startTcpserver()));
this->connect(ui->pushButton_send,SIGNAL(clicked()),this,SLOT(sendMessage()));
}
Testnet::~Testnet()
{
delete ui;
}
void Testnet::startTcpserver()
{
m_tcpServer = new QTcpServer(this);
m_tcpServer->listen(QHostAddress::Any,19999); //监听任何连上19999端口的ip
connect(m_tcpServer,SIGNAL(newConnection()),this,SLOT(newConnect())); //新连接信号触发，调用newConnect()槽函数，这个跟信号函数一样，其实你可以随便取。
}
void Testnet::newConnect()
{
m_tcpSocket = m_tcpServer->nextPendingConnection(); //得到每个连进来的socket
connect(m_tcpSocket,SIGNAL(readyRead()),this,SLOT(readMessage())); //有可读的信息，触发读函数槽
}
void Testnet::readMessage() //读取信息
{
// ui->textEdit_rec->te
QByteArray qba= m_tcpSocket->readAll(); //读取
qDebug()<<qba;
QString ss=QVariant(qba).toString();
ui->textEdit_rec->setText(ss);
}
void Testnet::sendMessage() //发送信息
{
QString strMesg= ui->lineEdit_sendmessage->text();
qDebug()<<strMesg;
m_tcpSocket->write(strMesg.toStdString().c_str(),strlen(strMesg.toStdString().c_str())); //发送
}


=======client========
[cpp] view plaincopyprint?
#include "testnet_c.h"
#include "ui_testnet_c.h"
testnet_c::testnet_c(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::testnet_c)
{
ui->setupUi(this);
this->connect(ui->pushButton_con,SIGNAL(clicked()),this,SLOT(connectServer()));
this->connect(ui->pushButton_send,SIGNAL(clicked()),this,SLOT(sendMesg()));
}
testnet_c::~testnet_c()
{
delete ui;
}
void testnet_c::connectServer()
{
m_tcpSocket = new QTcpSocket(this);
m_tcpSocket->abort();
m_tcpSocket->connectToHost("192.168.1.178",19999);
connect(m_tcpSocket,SIGNAL(readyRead()),this,SLOT(readMesg()));
}
void testnet_c::readMesg() //读取信息
{
QByteArray qba = m_tcpSocket->readAll();
ui->textEdit_recmesg->clear();
qDebug()<<qba;
QString ss=QVariant(qba).toString();
ui->textEdit_recmesg->setText(ss);
}
void testnet_c::sendMesg() //发送信息
{
QString ss= ui->lineEdit_sendmesg->text();
m_tcpSocket->write(ss.toStdString().c_str(),strlen(ss.toStdString().c_str()));
ui->lineEdit_sendmesg->clear();
}


实验结果如下：


 

=========server==============

[cpp] view plaincopyprint?

1. #include "testnet.h"
2. #include "ui_testnet.h"
3. #include <QtGui>
4. Testnet::Testnet(QWidget *parent) :
5. QMainWindow(parent),
6. ui(new Ui::Testnet)
7. {
8. ui->setupUi(this);
9. this->connect(ui->pushButton_start,SIGNAL(clicked()),this,SLOT(startTcpserver()));
10. this->connect(ui->pushButton_send,SIGNAL(clicked()),this,SLOT(sendMessage()));
11. }
12. Testnet::~Testnet()
13. {
14. delete ui;
15. }
16. void Testnet::startTcpserver()
17. {
18. m_tcpServer = new QTcpServer(this);
19. m_tcpServer->listen(QHostAddress::Any,19999); //监听任何连上19999端口的ip
20. connect(m_tcpServer,SIGNAL(newConnection()),this,SLOT(newConnect())); //新连接信号触发，调用newConnect()槽函数，这个跟信号函数一样，其实你可以随便取。
21. }
22. void Testnet::newConnect()
23. {
24. m_tcpSocket = m_tcpServer->nextPendingConnection(); //得到每个连进来的socket
25. connect(m_tcpSocket,SIGNAL(readyRead()),this,SLOT(readMessage())); //有可读的信息，触发读函数槽
26. }
27. void Testnet::readMessage() //读取信息
28. {
29. // ui->textEdit_rec->te
30. QByteArray qba= m_tcpSocket->readAll(); //读取
31. qDebug()<<qba;
32. QString ss=QVariant(qba).toString();
33. ui->textEdit_rec->setText(ss);
34. }
35. void Testnet::sendMessage() //发送信息
36. {
37. QString strMesg= ui->lineEdit_sendmessage->text();
38. qDebug()<<strMesg;
39. m_tcpSocket->write(strMesg.toStdString().c_str(),strlen(strMesg.toStdString().c_str())); //发送
40. }

=======client========

[cpp] view plaincopyprint?

1. #include "testnet_c.h"
2. #include "ui_testnet_c.h"
3. testnet_c::testnet_c(QWidget *parent) :
4. QMainWindow(parent),
5. ui(new Ui::testnet_c)
6. {
7. ui->setupUi(this);
8. this->connect(ui->pushButton_con,SIGNAL(clicked()),this,SLOT(connectServer()));
9. this->connect(ui->pushButton_send,SIGNAL(clicked()),this,SLOT(sendMesg()));
10. }
11. testnet_c::~testnet_c()
12. {
13. delete ui;
14. }
15. void testnet_c::connectServer()
16. {
17. m_tcpSocket = new QTcpSocket(this);
18. m_tcpSocket->abort();
19. m_tcpSocket->connectToHost("192.168.1.178",19999);
20. connect(m_tcpSocket,SIGNAL(readyRead()),this,SLOT(readMesg()));
21. }
22. void testnet_c::readMesg() //读取信息
23. {
24. QByteArray qba = m_tcpSocket->readAll();
25. ui->textEdit_recmesg->clear();
26. qDebug()<<qba;
27. QString ss=QVariant(qba).toString();
28. ui->textEdit_recmesg->setText(ss);
29. }
30. void testnet_c::sendMesg() //发送信息
31. {
32. QString ss= ui->lineEdit_sendmesg->text();
33. m_tcpSocket->write(ss.toStdString().c_str(),strlen(ss.toStdString().c_str()));
34. ui->lineEdit_sendmesg->clear();
35. }

实验结果如下：