最近一直在弄TCPIP进行数据传输，刚刚入门，网上搜了很多例子，今天终于完成了一个小demo
客户端发数组：主要就是数据类型的转化从float 转化成QByteArray
//1.建立客户端连接套接字connected 2.建立连接客户端不断监听服务器的信息readyread
//3.读取服务器信息readAll 4.设置连接按钮tcpsocket->connectToHost;
//5.设置发送信息的按钮write()
//6.关闭套接字disconnectFromHost()和close()
#include "widget.h"
#include "ui_widget.h"
#include <QHostAddress>
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
tcpsocket = new QTcpSocket(this);
connect(tcpsocket,&QTcpSocket::connected,
[=]()
{
QString str = "successfully connect!";
ui->textBrowser->append(str);
});
connect(tcpsocket,&QTcpSocket::readyRead,
[=]()
{
QByteArray array = tcpsocket->readAll();
QByteArray arrayServer;
arrayServer.append(array);
double dataServer[10];
memcpy(&dataServer,arrayServer.data(),sizeof(dataServer));
for(int i = 0;i<10;i++)
ui->textBrowser->append(QString::number(dataServer[i]));
});
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_connectBtn_clicked()
{
QString addr = ui->addrLed->text();
qint16 port = ui->portLed->text().toInt();
tcpsocket->connectToHost(QHostAddress(addr),port);
}
void Widget::on_closeBtn_clicked()
{
tcpsocket->disconnectFromHost();
tcpsocket->close();
}
void Widget::on_sendBtn_clicked()
{//QString str1 = "hello world!";
float data[20] = {1.1f,1.2f,1.3f,1.4f,1.5f,1.6f,1.7f,1.8f,1.9f,2.0f,2.1f,2.2f,2.3f,2.4f,2.5f,2.6f,2.7f,2.8f,2.9f,3.0f};
QByteArray array1;
array1.append((char*)&data,sizeof(data));
// QByteArray array = str1.toLocal8Bit();
qDebug()<<array1;
tcpsocket->write(array1);
}服务器接受：//服务器的步骤和函数
//1.建立套接字 2.监听listen(QHostAddress,888) 3.建立连接newConnection
//4.netPendingconnection,peerAdress,peerPort 5.建立连接不断监听readyread
//6.QByteArray array = tcpsocket->readAll();
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
tcpserver = new QTcpServer(this);
//监听，建立连接套接字
tcpserver->listen(QHostAddress::Any,8888);
connect(tcpserver,&QTcpServer::newConnection,//设置新连接
[=]()
{
tcpsocket = tcpserver->nextPendingConnection();
QString ip = tcpsocket->peerAddress().toString();
qint16 port = tcpsocket->peerPort();
QString temp = QString("[%1:%2]sucessfully connect!").arg(ip).arg(port);
ui->textBrowser->setText(temp);
connect(tcpsocket,&QTcpSocket::readyRead,
[=]()
{//解析浮点数据
QByteArray array = tcpsocket->readAll();//QByteArray转浮点数据
QByteArray arraybuffer;
arraybuffer.append(array);
float data[20];
memcpy(&data,arraybuffer.data(),sizeof(data));
// ui->textBrowser->append(data[10]);
for(int i = 0;i<20;i++)
{ qDebug()<<data[i];
ui->textBrowser->append(QString::number(data[i]));}
//写入客户端数据
double dataServer[10] = {11.1,11.2,11.3,11.4,11.5,11.6,11.7,11.8,11.9,12.0};
QByteArray arrayServer;
arrayServer.append((char*)&dataServer,sizeof(dataServer));
tcpsocket->write(arrayServer);
qDebug()<<"server:"<<arrayServer;
});
}
);
}
Widget::~Widget()
{
delete ui;
}
无论怎么样，今天终于实现了，开心，同时也希望各路大佬多多指教