qftp服务器源码,QFtp实现断点续传普通文件 | 求索阁

//实现#include "ftpmanager.h"

class FtpManager;

FtpManager::FtpManager(QString _host, QString userName, QString passWd, qint16 _port, QObject *parent):

QObject(parent),

m_userName(userName),

m_passwd(passWd),

m_File(0),

m_IsOpenFile(false)

{

//构建ftp对象

myFtp = new QFtp(this);

//连接ftp服务器

myFtp->connectToHost(_host,_port);

//进度条显示

connect(myFtp,SIGNAL(dataTransferProgress(qint64,qint64)),

SLOT(S_upDateProgress(qint64,qint64)));

//状态显示

connect(myFtp,SIGNAL(commandFinished(int,bool)),

SLOT(S_commandFinish(int,bool)));

}

FtpManager::~FtpManager()

{

delete myFtp;

}

//停止Ftp动作

void FtpManager::S_abort()

{

myFtp->abort();

}

//下载文件(当isRese==true为续传下载)

void FtpManager::S_dloadFile(QString _remoteFile,QString _localFile,bool isRese)

{

m_File = new QFile(_localFile);

if(!isRese)

{

qDebug() << tr("文件%1的普通下载... ...").arg(_remoteFile);

if(m_File->open(QIODevice::WriteOnly))

{

m_IsOpenFile = true;

myFtp->get(_remoteFile,m_File);

}

else

{

delete m_File;

m_File = NULL;

qDebug() << tr("本地文件%1打开失败！").arg(_localFile);

}

}

else

{

qDebug() << tr("文件%1的续传下载... ...").arg(_remoteFile);

if(m_File->open(QIODevice::Append))

{

m_IsOpenFile = true;

myFtp->rawCommand(tr("REST %1").arg(m_File->size()));

myFtp->m_isConLoad = true;          //设置当前现在为续传

myFtp->get(_remoteFile,m_File);

}

else

{

delete m_File;

m_File = NULL;

qDebug() << tr("本地文件%1打开失败！").arg(_localFile);

}

}

}

//上传文件(当isRese==true为续传上传)

void FtpManager::S_uloadFile(QString _localFile,QString _remoteFile,bool isRese)

{

m_File = new QFile(_localFile);

if(m_File->open(QIODevice::ReadOnly))

{

m_IsOpenFile = true;

if(!isRese)

{

qDebug() << tr("文件%1的普通上传... ...").arg(_localFile);

myFtp->put(m_File,_remoteFile);                                     //上传

}

else

{

qDebug() << tr("文件%1的续传... ...").arg(_localFile);

//在QFtp中定义续传方法

myFtp->conPut(m_File,_remoteFile);                                  //续传

}

}

else

{

delete m_File;

m_File = NULL;

qDebug() << tr("本地文件%1打开失败！").arg(_localFile);

}

}

//更新进度条

void FtpManager::S_upDateProgress(qint64 _used, qint64 _total)

{

int tmpVal = _used / (double)_total * 100;

emit G_getProgressVal(tmpVal);

}

//ftp服务提示信息

void FtpManager::S_commandFinish(int tmp, bool en)

{

Q_UNUSED(tmp);

if(myFtp->currentCommand() == QFtp::ConnectToHost){

if(en)

qDebug() << (tr("连接服务器出现错误：%1").arg(myFtp->errorString()));

else

{

qDebug() << (tr("连接到服务器成功"));

myFtp->login(m_userName,m_passwd);                           //登陆服务器

}

}

if (myFtp->currentCommand() == QFtp::Login){

if(en)

qDebug() << (tr("登录出现错误：%1").arg(myFtp->errorString()));

else

qDebug() << (tr("登录服务器成功"));

}

if (myFtp->currentCommand() == QFtp::Get)

{

if(en)

{

qDebug() << (tr("下载出现错误：%1").arg(myFtp->errorString()));

}

else

{

qDebug() << (tr("已经完成下载"));

m_File->flush();

}

m_File->close();

m_IsOpenFile = false;

delete m_File;

m_File = NULL;

}

else if(myFtp->currentCommand() == QFtp::Put)

{

if(en)

{

qDebug() << (tr("上传出现错误：%1").arg(myFtp->errorString()));

}

else

{

qDebug() << (tr("已经完成文件上传"));

}

m_File->close();

m_IsOpenFile = false;

delete m_File;

m_File = NULL;

}

else if (myFtp->currentCommand() == QFtp::Close)

{

qDebug() << (tr("已经关闭连接"));

if(m_IsOpenFile)

{

m_File->close();

delete m_File;

m_File = NULL;

}

}

}