封装QNetworkAccessManager实现Ftp的上传

效果:

头文件:

#ifndef FTPMANAGER_H#define FTPMANAGER_H/*** @brief Ftp文件上传，支持大文件* @author HAN* @date 2017-11-8*/#include <QString>#include <QDebug>#include <QUrl>#include <QNetworkAccessManager>#include <QFile>#include <QByteArray>#include <QUrl>#include <QNetworkRequest>#include <QNetworkReply>class FtpManager{public:    FtpManager(QString rftpUsesrname,QString rftpUserPwd,QString rftpIP,int rftpPort = 21);  //账号登录    QString uploadFile(QString path_fileName,QString ftpFileName);    QNetworkReply *getRelay();private:    QFile *sourceFile;    QByteArray by_txt;    QNetworkAccessManager *manager;    QUrl *ftpUrl;    QString ftpIP;    QString ftpUsesrname;    int ftpPort;    QString ftpUserPwd;    QNetworkReply *replyOrg;};#endif // FTPMANAGER_H

cpp:

#include "ftpmanager.h"#include <QException>/*** @brief 账号登录,初始化* @author HAN* @date 2017-11-8*/FtpManager::FtpManager(QString rftpUsesrname,QString rftpUserPwd,QString rftpIP,int rftpPort){    ftpIP =  rftpIP;    ftpUsesrname = rftpUsesrname;    ftpPort = rftpPort;    ftpUserPwd = rftpUserPwd;}/*** @brief 利用QNetworkAccessManager上传文件到ftp* @author HAN* @date 2017-11-8* @param fileName 上传的文件，包含路径* @param ftpFileName 服务器上的路径* @return*/QString FtpManager::uploadFile(QString path_fileName,QString ftpFileName){    if(ftpIP == "")    {        return "请设置ftp服务器信息";    }    try{        sourceFile = new QFile(path_fileName);      //设置文件路径        sourceFile->open(QIODevice::ReadOnly);  //读取模式        //by_txt=sourceFile->readAll();   //全部读取,遇到大文件时会内存溢出        //sourceFile->close();            //关闭文件        manager = new QNetworkAccessManager;        ftpUrl = new QUrl();      //设置QUrl数据         ftpUrl->setScheme("ftp"); //设置URL的类型（或协议）        ftpUrl->setHost(ftpIP);   //设置主机地址        ftpUrl->setPort(ftpPort);           //端口        ftpUrl->setUserName(ftpUsesrname);  //ftp用户名        ftpUrl->setPassword(ftpUserPwd);   //ftp密码        ftpUrl->setPath(ftpFileName);//设置路径+文件名,这里为ftp根目录        replyOrg = manager->put(QNetworkRequest(*ftpUrl), sourceFile);  //上传    }catch(QException e)    {        return "错误："+QString(e.what());    }    return "success";}/*** @brief 获取上传得到的QNetworkReply，用于进度条显示、获取上传结果等* @date 2017/12/15* @param han* @return void*/QNetworkReply *FtpManager::getRelay(){    return replyOrg;}

用法:

    FtpManager *ftp = new FtpManager(FtpNumber,FtpPwd,FtpServerIP);    ftp->uploadFile(path,fileName);  //上传测试文件    reply = ftp->getRelay();  //获取    connect(reply, SIGNAL(finished()), this, SLOT(OnFinishRelay()));    connect(reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(upLoadError(QNetworkReply::NetworkError)));    connect(reply, SIGNAL(uploadProgress(qint64 ,qint64)),this,SLOT(OnUploadProgress(qint64,qint64)));    p, li { white-space: pre-wrap; }

槽函数

/*** @brief 显示上传进度条* @date 2017/12/15* @param han* @return void*/void OnUploadProgress(qint64 bytesSent, qint64 bytesTotal){    ui->uploadProgressBar->setValue(bytesSent*1.0/bytesTotal*100);}/*** @brief 上传错误* @date 2017/12/15* @param han* @return void*/void upLoadError(QNetworkReply::NetworkError errorCode){}/*** @brief 发送结果回调函数* @date 2017/12/15* @param han* @return void*/void OnFinishRelay(){        if(reply->error() == QNetworkReply::NoError)    {             //成功    }    else    {        //错误    }    reply->deleteLater();}