基于QT制作一个简易的传输文件小工具基于QT制作一个简易的传输文件

最近因为一个事情很恼火，因为办公需要用到企业微信，但是企业微信只能在一个电脑上登陆，所以当别人发文件给你的时候，你只能一个电脑接收，创建共享文件夹也很麻烦，每次都需要去访问，很麻烦。所以准备自己写一个文件传输小工具。
功能就是能实现文件的双向传输，即客户端能传给服务端，服务端可以传给客户端。
使用的tcp通信，其实就是发消息，但是组合数据我是借鉴了IT1995大神写的代码。
先看下效果图

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可以看到既可以接受文件也可进行发送文件，只要2台电脑在统一局域网内，就可发送和接受数据。

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本地文件下出现了一份传输的文件。
直接看代码
.h

#ifndef WIDGET_H#define WIDGET_H#include #include #include #include #include #include #include #include class Widget : public QWidget{Q_OBJECTpublic:Widget(QWidget *parent = nullptr); ~Widget(); void Init(); private slots:void onTcpConnected(); void onConnectClicked(); void ServerNewConnect(); void SocketReadData(); void onOpenFileClicked(); void onSendClicked(); void updateClientProgress(qint64 numBytes); private:QPushButton *m_pConnectBtn=nullptr; QLineEdit *m_pIpAddressEdit=nullptr; QLineEdit *m_pPortEdit=nullptr; QWidget *m_pTitleWgt=nullptr; QLineEdit *m_pFilePathEdit=nullptr; QPushButton *m_pOpenFileBtn=nullptr; QPushButton *m_pSendBtn=nullptr; QTextEdit *m_pTextEdit=nullptr; QProgressBar *m_pReceiverBar=nullptr; QProgressBar *m_pSendBar=nullptr; QTcpSocket *m_pTcpSocket=nullptr; QTcpServer *m_pTcpServer=nullptr; QTcpSocket *m_pTcpServerSocket=nullptr; //------receiverqint64 m_bytesReceived; qint64 m_fileNameSize; qint64 m_totalBytes; QString m_fileName; QFile *m_localFile; QByteArray m_inBlock; //sendQFile *m_ClientlocalFile; QString m_ClientfileName; qint64 m_ClienttotalBytes; qint64 m_ClientbytesWritten=0; qint64 m_ClientbytesToWrite; qint64 m_ClinetpayloadSize; QByteArray m_ClientoutBlock; }; #endif // WIDGET_H

.cpp

#include "widget.h"#include #include #include #include #include Widget::Widget(QWidget *parent): QWidget(parent){this->resize(800,600); Init(); m_pTcpSocket=new QTcpSocket(this); connect(m_pTcpSocket,&QTcpSocket::connected,this,&Widget::onTcpConnected); //若连接成功，则触发此信号connect(m_pTcpSocket,SIGNAL(bytesWritten(qint64)),this,SLOT(updateClientProgress(qint64))); //发送数据m_pTcpServer=new QTcpServer(this); m_totalBytes=0; m_bytesReceived=0; m_fileNameSize=0; connect(m_pTcpServer,&QTcpServer::newConnection,this,&Widget::ServerNewConnect); if(!m_pTcpServer->listen(QHostAddress::Any, 2021))//端口为2021{QMessageBox::warning(this,"Warning",m_pTcpServer->errorString(),QMessageBox::Ok); return; }}Widget::~Widget(){}void Widget::Init(){m_pConnectBtn=new QPushButton(tr("Connect"),this); m_pIpAddressEdit=new QLineEdit(this); m_pPortEdit=new QLineEdit(this); m_pPortEdit->setValidator(new QIntValidator()); m_pTitleWgt=new QWidget(this); m_pIpAddressEdit->setFixedWidth(200); m_pPortEdit->setFixedWidth(200); m_pConnectBtn->setFixedSize(100,25); QLabel *ipLabel=new QLabel(tr("IpAddress:"),this); QLabel *portLabel=new QLabel(tr("Port:"),this); ipLabel->setFixedWidth(60); portLabel->setFixedWidth(40); QHBoxLayout *titleLayout=new QHBoxLayout(this); titleLayout->addWidget(ipLabel); titleLayout->addWidget(m_pIpAddressEdit); titleLayout->addWidget(portLabel); titleLayout->addWidget(m_pPortEdit); titleLayout->addWidget(m_pConnectBtn); titleLayout->setMargin(5); titleLayout->setSpacing(10); titleLayout->addStretch(); m_pTitleWgt->setFixedHeight(40); m_pTitleWgt->setLayout(titleLayout); m_pIpAddressEdit->setText("192.168.2.110"); m_pPortEdit->setText("2021"); m_pPortEdit->setEnabled(false); m_pFilePathEdit=new QLineEdit(this); m_pOpenFileBtn=new QPushButton(tr("Open File"),this); m_pSendBtn=new QPushButton(tr("Send")); m_pFilePathEdit->setFixedWidth(500); m_pOpenFileBtn->setFixedSize(100,25); m_pSendBtn->setFixedSize(100,25); m_pSendBtn->setEnabled(false); QWidget *bottomWgt=new QWidget(this); QHBoxLayout *bottomLayout=new QHBoxLayout(this); bottomLayout->addWidget(m_pFilePathEdit); bottomLayout->addWidget(m_pOpenFileBtn); bottomLayout->addWidget(m_pSendBtn); bottomLayout->setMargin(5); bottomLayout->setSpacing(5); bottomLayout->addStretch(); bottomWgt->setLayout(bottomLayout); m_pTextEdit=new QTextEdit(this); QLabel *receiverLabel=new QLabel(tr("Receiver Speed"),this); QLabel *SendLabel=new QLabel(tr("Send Speed"),this); receiverLabel->setFixedWidth(100); SendLabel->setFixedWidth(100); m_pReceiverBar=new QProgressBar(this); m_pSendBar=new QProgressBar(this); m_pReceiverBar->setFixedSize(300,30); m_pSendBar->setFixedSize(300,30); m_pReceiverBar->setOrientation(Qt::Horizontal); m_pSendBar->setOrientation(Qt::Horizontal); QWidget *receiverBarWgt=new QWidget(this); QHBoxLayout *receiverBarLayout=new QHBoxLayout(this); receiverBarLayout->addWidget(receiverLabel); receiverBarLayout->addWidget(m_pReceiverBar); receiverBarLayout->addStretch(); receiverBarLayout->setSpacing(5); receiverBarWgt->setLayout(receiverBarLayout); QWidget *sendBarWgt=new QWidget(this); QHBoxLayout *sendBarLayout=new QHBoxLayout(this); sendBarLayout->addWidget(SendLabel); sendBarLayout->addWidget(m_pSendBar); sendBarLayout->addStretch(); sendBarLayout->setSpacing(5); sendBarWgt->setLayout(sendBarLayout); connect(m_pConnectBtn,&QPushButton::clicked,this,&Widget::onConnectClicked); connect(m_pOpenFileBtn,&QPushButton::clicked,this,&Widget::onOpenFileClicked); connect(m_pSendBtn,&QPushButton::clicked,this,&Widget::onSendClicked); QVBoxLayout *mainLayout=new QVBoxLayout(this); mainLayout->addWidget(m_pTitleWgt); mainLayout->addWidget(bottomWgt); mainLayout->addWidget(receiverBarWgt); mainLayout->addWidget(sendBarWgt); mainLayout->addWidget(m_pTextEdit); mainLayout->setMargin(0); mainLayout->addStretch(); this->setLayout(mainLayout); }void Widget::onTcpConnected(){m_pTextEdit->append("Connect Server Success!"); }void Widget::onConnectClicked(){QString strip=m_pIpAddressEdit->text(); QString strport=m_pPortEdit->text(); if(strip!=""&&strport!=""){m_pTcpSocket->connectToHost(strip,strport.toInt()); //请求连接}else{QMessageBox::warning(this,"Warning","IpAddress or Port is Null",QMessageBox::Ok); }}void Widget::ServerNewConnect(){m_pTcpServerSocket = m_pTcpServer->nextPendingConnection(); //服务端接受消息QObject::connect(m_pTcpServerSocket, &QTcpSocket::readyRead, this, &Widget::SocketReadData); m_pTextEdit->append("Connect Client Success"); }void Widget::SocketReadData(){QDataStream in(m_pTcpServerSocket); in.setVersion(QDataStream::Qt_5_11); if (m_bytesReceived<=sizeof(qint64)*2){if((m_pTcpServerSocket->bytesAvailable()>=sizeof(qint64)*2)&&(m_fileNameSize==0)){in>>m_totalBytes>>m_fileNameSize; m_bytesReceived +=sizeof(qint64)*2; }if((m_pTcpServerSocket->bytesAvailable()>=m_fileNameSize)&&(m_fileNameSize!=0)){in>>m_fileName; m_bytesReceived+=m_fileNameSize; m_localFile = new QFile(m_fileName); if (!m_localFile->open(QFile::WriteOnly)){qDebug() << "server: open file error!"; return; }}else{return; }}if(m_bytesReceivedbytesAvailable(); m_inBlock = m_pTcpServerSocket->readAll(); m_localFile->write(m_inBlock); m_inBlock.resize(0); }m_pReceiverBar->setMaximum(m_totalBytes); m_pReceiverBar->setValue(m_bytesReceived); if (m_bytesReceived==m_totalBytes){m_localFile->close(); QString strSuccess=QString("File %1 ReceiverSucess").arg(m_fileName); m_pTextEdit->append(strSuccess); m_pTcpServerSocket->close(); m_totalBytes=0; m_bytesReceived=0; m_fileNameSize=0; }}void Widget::onOpenFileClicked(){QString fileName = QFileDialog::getOpenFileName(this, tr("Open File"),"/home",tr("File (*.*)")); if(fileName!=""){m_ClientfileName=fileName; m_pSendBtn->setEnabled(true); m_pFilePathEdit->setText(fileName); }}void Widget::onSendClicked(){m_ClientoutBlock.clear(); m_ClientlocalFile=new QFile(m_ClientfileName); if(!m_ClientlocalFile->open(QFile::ReadOnly)){qDebug()<<"client:open file error!"; return; }m_ClienttotalBytes=m_ClientlocalFile->size(); QDataStream sendOut(&m_ClientoutBlock,QIODevice::WriteOnly); sendOut.setVersion(QDataStream::Qt_5_11); QString currentFileName=m_ClientfileName.right(m_ClientfileName.size()-m_ClientfileName.lastIndexOf('/')-1); sendOut<seek(0); sendOut<write(m_ClientoutBlock); m_ClientoutBlock.resize(0); }void Widget::updateClientProgress(qint64 numBytes){m_ClientbytesWritten+=(int)numBytes; if(m_ClientbytesToWrite>0){m_ClientoutBlock=m_ClientlocalFile->read(qMin(m_ClientbytesToWrite,m_ClinetpayloadSize)); m_ClientbytesToWrite-=(int)m_pTcpSocket->write(m_ClientoutBlock); m_ClientoutBlock.resize(0); }else{m_ClientlocalFile->close(); }m_pSendBar->setMaximum(m_ClienttotalBytes); m_pSendBar->setValue(m_ClientbytesWritten); if(m_ClientbytesWritten==m_ClienttotalBytes){QString sendSuccess=QString("Send File %1 Success").arg(m_fileName); m_pTextEdit->append(sendSuccess); m_ClientlocalFile->close(); m_pTcpSocket->close(); m_ClientbytesWritten=0; }}

这个小工具我会一直用的
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