解決方案： 我已經通過修改CutyCapt來源解決了這個問題。 想法是，獲取網址的HTML，然後將HTML設置爲WebKit。
CutyCapt.hpp
#include <QtWebKit>
class CutyCapt;
class CutyPage : public QWebPage {
Q_OBJECT
public:
void setAttribute(QWebSettings::WebAttribute option, const QString& value);
void setUserAgent(const QString& userAgent);
void setAlertString(const QString& alertString);
void setPrintAlerts(bool printAlerts);
void setCutyCapt(CutyCapt* cutyCapt);
QString getAlertString();
protected:
QString chooseFile(QWebFrame *frame, const QString& suggestedFile);
void javaScriptConsoleMessage(const QString& message, int lineNumber, const QString& sourceID);
bool javaScriptPrompt(QWebFrame* frame, const QString& msg, const QString& defaultValue, QString* result);
void javaScriptAlert(QWebFrame* frame, const QString& msg);
bool javaScriptConfirm(QWebFrame* frame, const QString& msg);
QString userAgentForUrl(const QUrl& url) const;
QString mUserAgent;
QString mAlertString;
bool mPrintAlerts;
CutyCapt* mCutyCapt;
};
class CutyCapt : public QObject {
Q_OBJECT
public:
QString mUrl;
// TODO: This should really be elsewhere and be named differently
enum OutputFormat { SvgFormat, PdfFormat, PsFormat, InnerTextFormat, HtmlFormat,
RenderTreeFormat, PngFormat, JpegFormat, MngFormat, TiffFormat, GifFormat,
BmpFormat, PpmFormat, XbmFormat, XpmFormat, OtherFormat };
CutyCapt(CutyPage* page,
const QString& output,
int delay,
OutputFormat format,
const QString& scriptProp,
const QString& scriptCode);
private slots:
void HtmlDownloadFinished(QNetworkReply * reply);
void HtmlDownloadError(QNetworkReply::NetworkError code);
void DocumentComplete(bool ok);
void InitialLayoutCompleted();
void JavaScriptWindowObjectCleared();
void Timeout();
void Delayed();
private:
void TryDelayedRender();
void saveSnapshot();
bool mSawInitialLayout;
bool mSawDocumentComplete;
protected:
QString mOutput;
int mDelay;
CutyPage* mPage;
OutputFormat mFormat;
QObject* mScriptObj;
QString mScriptProp;
QString mScriptCode;
};
CutyCapt.cpp
////////////////////////////////////////////////////////////////////
//
// CutyCapt - A Qt WebKit Web Page Rendering Capture Utility
//
// Copyright (C) 2003-2010 Bjoern Hoehrmann <[email protected]>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// $Id: CutyCapt.cpp 7 2011-11-30 10:56:34Z hoehrmann $
//
////////////////////////////////////////////////////////////////////
#include <QApplication>
#include <QtWebKit>
#include <QtGui>
#include <QSvgGenerator>
#include <QPrinter>
#include <QTimer>
#include <QByteArray>
#include <QNetworkRequest>
#include <QtCore>
#include "CutyCapt.hpp"
#if QT_VERSION >= 0x040600 && 0
#define CUTYCAPT_SCRIPT 1
#endif
#ifdef STATIC_PLUGINS
Q_IMPORT_PLUGIN(qjpeg)
Q_IMPORT_PLUGIN(qgif)
Q_IMPORT_PLUGIN(qtiff)
Q_IMPORT_PLUGIN(qsvg)
Q_IMPORT_PLUGIN(qmng)
Q_IMPORT_PLUGIN(qico)
#endif
static struct _CutyExtMap {
CutyCapt::OutputFormat id;
const char* extension;
const char* identifier;
} const CutyExtMap[] = {
{ CutyCapt::SvgFormat, ".svg", "svg" },
{ CutyCapt::PdfFormat, ".pdf", "pdf" },
{ CutyCapt::PsFormat, ".ps", "ps" },
{ CutyCapt::InnerTextFormat, ".txt", "itext" },
{ CutyCapt::HtmlFormat, ".html", "html" },
{ CutyCapt::RenderTreeFormat, ".rtree", "rtree" },
{ CutyCapt::JpegFormat, ".jpeg", "jpeg" },
{ CutyCapt::PngFormat, ".png", "png" },
{ CutyCapt::MngFormat, ".mng", "mng" },
{ CutyCapt::TiffFormat, ".tiff", "tiff" },
{ CutyCapt::GifFormat, ".gif", "gif" },
{ CutyCapt::BmpFormat, ".bmp", "bmp" },
{ CutyCapt::PpmFormat, ".ppm", "ppm" },
{ CutyCapt::XbmFormat, ".xbm", "xbm" },
{ CutyCapt::XpmFormat, ".xpm", "xpm" },
{ CutyCapt::OtherFormat, "", "" }
};
QString
CutyPage::chooseFile(QWebFrame* /*frame*/, const QString& /*suggestedFile*/) {
return QString::null;
}
bool
CutyPage::javaScriptConfirm(QWebFrame* /*frame*/, const QString& /*msg*/) {
return true;
}
bool
CutyPage::javaScriptPrompt(QWebFrame* /*frame*/,
const QString& /*msg*/,
const QString& /*defaultValue*/,
QString* /*result*/) {
return true;
}
void
CutyPage::javaScriptConsoleMessage(const QString& /*message*/,
int /*lineNumber*/,
const QString& /*sourceID*/) {
// noop
}
void
CutyPage::javaScriptAlert(QWebFrame* /*frame*/, const QString& msg) {
if (mPrintAlerts)
qDebug() << "[alert]" << msg;
if (mAlertString == msg) {
QTimer::singleShot(10, mCutyCapt, SLOT(Delayed()));
}
}
QString
CutyPage::userAgentForUrl(const QUrl& url) const {
if (!mUserAgent.isNull())
return mUserAgent;
return QWebPage::userAgentForUrl(url);
}
void
CutyPage::setUserAgent(const QString& userAgent) {
mUserAgent = userAgent;
}
void
CutyPage::setAlertString(const QString& alertString) {
mAlertString = alertString;
}
QString
CutyPage::getAlertString() {
return mAlertString;
}
void
CutyPage::setCutyCapt(CutyCapt* cutyCapt) {
mCutyCapt = cutyCapt;
}
void
CutyPage::setPrintAlerts(bool printAlerts) {
mPrintAlerts = printAlerts;
}
void
CutyPage::setAttribute(QWebSettings::WebAttribute option,
const QString& value) {
if (value == "on")
settings()->setAttribute(option, true);
else if (value == "off")
settings()->setAttribute(option, false);
else
(void)0; // TODO: ...
}
// TODO: Consider merging some of main() and CutyCap
CutyCapt::CutyCapt(CutyPage* page, const QString& output, int delay, OutputFormat format,
const QString& scriptProp, const QString& scriptCode) {
mPage = page;
mOutput = output;
mDelay = delay;
mSawInitialLayout = false;
mSawDocumentComplete = false;
mFormat = format;
mScriptProp = scriptProp;
mScriptCode = scriptCode;
mScriptObj = new QObject();
// This is not really nice, but some restructuring work is
// needed anyway, so this should not be that bad for now.
mPage->setCutyCapt(this);
}
void
CutyCapt::InitialLayoutCompleted() {
mSawInitialLayout = true;
if (mSawInitialLayout && mSawDocumentComplete)
TryDelayedRender();
}
void
CutyCapt::DocumentComplete(bool /*ok*/) {
mSawDocumentComplete = true;
if (mSawInitialLayout && mSawDocumentComplete)
TryDelayedRender();
}
void
CutyCapt::JavaScriptWindowObjectCleared() {
if (!mScriptProp.isEmpty()) {
QVariant var = mPage->mainFrame()->evaluateJavaScript(mScriptProp);
QObject* obj = var.value<QObject*>();
if (obj == mScriptObj)
return;
mPage->mainFrame()->addToJavaScriptWindowObject(mScriptProp, mScriptObj);
}
mPage->mainFrame()->evaluateJavaScript(mScriptCode);
}
void CutyCapt::HtmlDownloadFinished(QNetworkReply * reply)
{
QVariant statusCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
qDebug() << statusCode;
if (!statusCode.isValid())
{
QApplication::exit();
return;
}
int status = statusCode.toInt();
if(status == 301 || status == 302)
{
QVariant loc = reply->header(QNetworkRequest::LocationHeader);
qDebug() << "Location :" << loc.toString();
QApplication::exit();
return;
}
if (status != 200)
{
QString reason = reply->attribute(QNetworkRequest::HttpReasonPhraseAttribute).toString();
qDebug() << reason;
QApplication::exit();
return;
}
QString html=QString::fromUtf8(reply->readAll());
mPage->mainFrame()->setHtml(html, QUrl(mUrl));
}
void CutyCapt::HtmlDownloadError(QNetworkReply::NetworkError code)
{
QApplication::exit();
}
void
CutyCapt::TryDelayedRender() {
if (!mPage->getAlertString().isEmpty())
return;
if (mDelay > 0) {
QTimer::singleShot(mDelay, this, SLOT(Delayed()));
return;
}
saveSnapshot();
QApplication::exit();
}
void
CutyCapt::Timeout() {
saveSnapshot();
QApplication::exit();
}
void
CutyCapt::Delayed() {
saveSnapshot();
QApplication::exit();
}
void
CutyCapt::saveSnapshot() {
QWebFrame *mainFrame = mPage->mainFrame();
QPainter painter;
const char* format = NULL;
for (int ix = 0; CutyExtMap[ix].id != OtherFormat; ++ix)
if (CutyExtMap[ix].id == mFormat)
format = CutyExtMap[ix].identifier; //, break;
// TODO: sometimes contents/viewport can have size 0x0
// in which case saving them will fail. This is likely
// the result of the method being called too early. So
// far I've been unable to find a workaround, except
// using --delay with some substantial wait time. I've
// tried to resize multiple time, make a fake render,
// check for other events... This is primarily a problem
// under my Ubuntu virtual machine.
mPage->setViewportSize(mainFrame->contentsSize());
switch (mFormat) {
case SvgFormat: {
QSvgGenerator svg;
svg.setFileName(mOutput);
svg.setSize(mPage->viewportSize());
painter.begin(&svg);
mainFrame->render(&painter);
painter.end();
break;
}
case PdfFormat:
case PsFormat: {
QPrinter printer;
printer.setPageSize(QPrinter::A4);
printer.setOutputFileName(mOutput);
// TODO: change quality here?
mainFrame->print(&printer);
break;
}
case RenderTreeFormat:
case InnerTextFormat:
case HtmlFormat: {
QFile file(mOutput);
file.open(QIODevice::WriteOnly | QIODevice::Text);
QTextStream s(&file);
s.setCodec("utf-8");
s << (mFormat == RenderTreeFormat ? mainFrame->renderTreeDump() :
mFormat == InnerTextFormat ? mainFrame->toPlainText() :
mFormat == HtmlFormat ? mainFrame->toHtml() :
"bug");
break;
}
default: {
QImage image(mPage->viewportSize(), QImage::Format_ARGB32);
painter.begin(&image);
mainFrame->render(&painter);
painter.end();
// TODO: add quality
image.save(mOutput, format);
}
};
}
void
CaptHelp(void) {
printf("%s",
" -----------------------------------------------------------------------------\n"
" Usage: CutyCapt --url=http://www.example.org/ --out=localfile.png \n"
" -----------------------------------------------------------------------------\n"
" --help Print this help page and exit \n"
" --url=<url> The URL to capture (http:...|file:...|...) \n"
" --out=<path> The target file (.png|pdf|ps|svg|jpeg|...) \n"
" --out-format=<f> Like extension in --out, overrides heuristic \n"
// " --out-quality=<int> Output format quality from 1 to 100 \n"
" --min-width=<int> Minimal width for the image (default: 800) \n"
" --min-height=<int> Minimal height for the image (default: 600) \n"
" --max-wait=<ms> Don't wait more than (default: 90000, inf: 0)\n"
" --delay=<ms> After successful load, wait (default: 0) \n"
// " --user-styles=<url> Location of user style sheet (deprecated) \n"
" --user-style-path=<path> Location of user style sheet file, if any \n"
" --user-style-string=<css> User style rules specified as text \n"
" --header=<name>:<value> request header; repeatable; some can't be set\n"
" --method=<get|post|put> Specifies the request method (default: get) \n"
" --body-string=<string> Unencoded request body (default: none) \n"
" --body-base64=<base64> Base64-encoded request body (default: none) \n"
" --app-name=<name> appName used in User-Agent; default is none \n"
" --app-version=<version> appVers used in User-Agent; default is none \n"
" --user-agent=<string> Override the User-Agent header Qt would set \n"
" --javascript=<on|off> JavaScript execution (default: on) \n"
" --java=<on|off> Java execution (default: unknown) \n"
" --plugins=<on|off> Plugin execution (default: unknown) \n"
" --private-browsing=<on|off> Private browsing (default: unknown) \n"
" --auto-load-images=<on|off> Automatic image loading (default: on) \n"
" --js-can-open-windows=<on|off> Script can open windows? (default: unknown) \n"
" --js-can-access-clipboard=<on|off> Script clipboard privs (default: unknown)\n"
#if QT_VERSION >= 0x040500
" --print-backgrounds=<on|off> Backgrounds in PDF/PS output (default: off) \n"
" --zoom-factor=<float> Page zoom factor (default: no zooming) \n"
" --zoom-text-only=<on|off> Whether to zoom only the text (default: off) \n"
" --http-proxy=<url> Address for HTTP proxy server (default: none)\n"
#endif
#if CUTYCAPT_SCRIPT
" --inject-script=<path> JavaScript that will be injected into pages \n"
" --script-object=<string> Property to hold state for injected script \n"
" --expect-alert=<string> Try waiting for alert(string) before capture \n"
" --debug-print-alerts Prints out alert(...) strings for debugging. \n"
#endif
" -----------------------------------------------------------------------------\n"
" <f> is svg,ps,pdf,itext,html,rtree,png,jpeg,mng,tiff,gif,bmp,ppm,xbm,xpm \n"
" -----------------------------------------------------------------------------\n"
#if CUTYCAPT_SCRIPT
" The `inject-script` option can be used to inject script code into loaded web \n"
" pages. The code is called whenever the `javaScriptWindowObjectCleared` signal\n"
" is received. When `script-object` is set, an object under the specified name \n"
" will be available to the script to maintain state across page loads. When the\n"
" `expect-alert` option is specified, the shot will be taken when a script in- \n"
" vokes alert(string) with the string if that happens before `max-wait`. These \n"
" options effectively allow you to remote control the browser and the web page.\n"
" This an experimental and easily abused and misused feature. Use with caution.\n"
" -----------------------------------------------------------------------------\n"
#endif
" http://cutycapt.sf.net - (c) 2003-2010 Bjoern Hoehrmann - [email protected]\n"
"");
}
int
main(int argc, char *argv[]) {
int argHelp = 0;
int argDelay = 0;
int argSilent = 0;
int argMinWidth = 800;
int argMinHeight = 600;
int argMaxWait = 90000;
int argVerbosity = 0;
const char* argUrl = NULL;
const char* argUserStyle = NULL;
const char* argUserStylePath = NULL;
const char* argUserStyleString = NULL;
const char* argIconDbPath = NULL;
const char* argInjectScript = NULL;
const char* argScriptObject = NULL;
QString argOut;
CutyCapt::OutputFormat format = CutyCapt::OtherFormat;
QApplication app(argc, argv, true);
CutyPage page;
QNetworkAccessManager::Operation method =
QNetworkAccessManager::GetOperation;
QByteArray body;
QNetworkRequest req;
QNetworkAccessManager manager;
// Parse command line parameters
for (int ax = 1; ax < argc; ++ax) {
size_t nlen;
const char* s = argv[ax];
const char* value;
// boolean options
if (strcmp("--silent", s) == 0) {
argSilent = 1;
continue;
} else if (strcmp("--help", s) == 0) {
argHelp = 1;
break;
} else if (strcmp("--verbose", s) == 0) {
argVerbosity++;
continue;
#if CUTYCAPT_SCRIPT
} else if (strcmp("--debug-print-alerts", s) == 0) {
page.setPrintAlerts(true);
continue;
#endif
}
value = strchr(s, '=');
if (value == NULL) {
// TODO: error
argHelp = 1;
break;
}
nlen = value++ - s;
// --name=value options
if (strncmp("--url", s, nlen) == 0) {
argUrl = value;
} else if (strncmp("--min-width", s, nlen) == 0) {
// TODO: add error checking here?
argMinWidth = (unsigned int)atoi(value);
} else if (strncmp("--min-height", s, nlen) == 0) {
// TODO: add error checking here?
argMinHeight = (unsigned int)atoi(value);
} else if (strncmp("--delay", s, nlen) == 0) {
// TODO: see above
argDelay = (unsigned int)atoi(value);
} else if (strncmp("--max-wait", s, nlen) == 0) {
// TODO: see above
argMaxWait = (unsigned int)atoi(value);
} else if (strncmp("--out", s, nlen) == 0) {
argOut = value;
if (format == CutyCapt::OtherFormat)
for (int ix = 0; CutyExtMap[ix].id != CutyCapt::OtherFormat; ++ix)
if (argOut.endsWith(CutyExtMap[ix].extension))
format = CutyExtMap[ix].id; //, break;
} else if (strncmp("--user-styles", s, nlen) == 0) {
// This option is provided for backwards-compatibility only
argUserStyle = value;
} else if (strncmp("--user-style-path", s, nlen) == 0) {
argUserStylePath = value;
} else if (strncmp("--user-style-string", s, nlen) == 0) {
argUserStyleString = value;
} else if (strncmp("--icon-database-path", s, nlen) == 0) {
argIconDbPath = value;
} else if (strncmp("--auto-load-images", s, nlen) == 0) {
page.setAttribute(QWebSettings::AutoLoadImages, value);
} else if (strncmp("--javascript", s, nlen) == 0) {
page.setAttribute(QWebSettings::JavascriptEnabled, value);
} else if (strncmp("--java", s, nlen) == 0) {
page.setAttribute(QWebSettings::JavaEnabled, value);
} else if (strncmp("--plugins", s, nlen) == 0) {
page.setAttribute(QWebSettings::PluginsEnabled, value);
} else if (strncmp("--private-browsing", s, nlen) == 0) {
page.setAttribute(QWebSettings::PrivateBrowsingEnabled, value);
} else if (strncmp("--js-can-open-windows", s, nlen) == 0) {
page.setAttribute(QWebSettings::JavascriptCanOpenWindows, value);
} else if (strncmp("--js-can-access-clipboard", s, nlen) == 0) {
page.setAttribute(QWebSettings::JavascriptCanAccessClipboard, value);
} else if (strncmp("--developer-extras", s, nlen) == 0) {
page.setAttribute(QWebSettings::DeveloperExtrasEnabled, value);
} else if (strncmp("--links-included-in-focus-chain", s, nlen) == 0) {
page.setAttribute(QWebSettings::LinksIncludedInFocusChain, value);
#if QT_VERSION >= 0x040500
} else if (strncmp("--print-backgrounds", s, nlen) == 0) {
page.setAttribute(QWebSettings::PrintElementBackgrounds, value);
} else if (strncmp("--zoom-factor", s, nlen) == 0) {
page.mainFrame()->setZoomFactor(QString(value).toFloat());
} else if (strncmp("--zoom-text-only", s, nlen) == 0) {
page.setAttribute(QWebSettings::ZoomTextOnly, value);
} else if (strncmp("--http-proxy", s, nlen) == 0) {
QUrl p = QUrl::fromEncoded(value);
QNetworkProxy proxy = QNetworkProxy(QNetworkProxy::HttpProxy,
p.host(), p.port(80), p.userName(), p.password());
manager.setProxy(proxy);
page.setNetworkAccessManager(&manager);
#endif
#if CUTYCAPT_SCRIPT
} else if (strncmp("--inject-script", s, nlen) == 0) {
argInjectScript = value;
} else if (strncmp("--script-object", s, nlen) == 0) {
argScriptObject = value;
} else if (strncmp("--expect-alert", s, nlen) == 0) {
page.setAlertString(value);
#endif
} else if (strncmp("--app-name", s, nlen) == 0) {
app.setApplicationName(value);
} else if (strncmp("--app-version", s, nlen) == 0) {
app.setApplicationVersion(value);
} else if (strncmp("--body-base64", s, nlen) == 0) {
body = QByteArray::fromBase64(value);
} else if (strncmp("--body-string", s, nlen) == 0) {
body = QByteArray(value);
} else if (strncmp("--user-agent", s, nlen) == 0) {
page.setUserAgent(value);
} else if (strncmp("--out-format", s, nlen) == 0) {
for (int ix = 0; CutyExtMap[ix].id != CutyCapt::OtherFormat; ++ix)
if (strcmp(value, CutyExtMap[ix].identifier) == 0)
format = CutyExtMap[ix].id; //, break;
if (format == CutyCapt::OtherFormat) {
// TODO: error
argHelp = 1;
break;
}
} else if (strncmp("--header", s, nlen) == 0) {
const char* hv = strchr(value, ':');
if (hv == NULL) {
// TODO: error
argHelp = 1;
break;
}
req.setRawHeader(QByteArray(value, hv - value), hv + 1);
} else if (strncmp("--method", s, nlen) == 0) {
if (strcmp("value", "get") == 0)
method = QNetworkAccessManager::GetOperation;
else if (strcmp("value", "put") == 0)
method = QNetworkAccessManager::PutOperation;
else if (strcmp("value", "post") == 0)
method = QNetworkAccessManager::PostOperation;
else if (strcmp("value", "head") == 0)
method = QNetworkAccessManager::HeadOperation;
else
(void)0; // TODO: ...
} else {
// TODO: error
argHelp = 1;
}
}
if (argUrl == NULL || argOut == NULL || argHelp) {
CaptHelp();
return EXIT_FAILURE;
}
// This used to use QUrl(argUrl) but that escapes %hh sequences
// even though it should not, as URLs can assumed to be escaped.
req.setUrl(QUrl::fromEncoded(argUrl));
QString scriptProp(argScriptObject);
QString scriptCode;
if (argInjectScript) {
QFile file(argInjectScript);
if (file.open(QIODevice::ReadOnly)) {
QTextStream stream(&file);
stream.setCodec(QTextCodec::codecForName("UTF-8"));
stream.setAutoDetectUnicode(true);
scriptCode = stream.readAll();
file.close();
}
}
CutyCapt main(&page, argOut, argDelay, format, scriptProp, scriptCode);
main.mUrl = argUrl;
app.connect(&page,
SIGNAL(loadFinished(bool)),
&main,
SLOT(DocumentComplete(bool)));
app.connect(page.mainFrame(),
SIGNAL(initialLayoutCompleted()),
&main,
SLOT(InitialLayoutCompleted()));
if (argMaxWait > 0) {
// TODO: Should this also register one for the application?
QTimer::singleShot(argMaxWait, &main, SLOT(Timeout()));
}
if (argUserStyle != NULL)
// TODO: does this need any syntax checking?
page.settings()->setUserStyleSheetUrl(QUrl::fromEncoded(argUserStyle));
if (argUserStylePath != NULL) {
page.settings()->setUserStyleSheetUrl(QUrl::fromLocalFile(argUserStylePath));
}
if (argUserStyleString != NULL) {
QUrl data("data:text/css;charset=utf-8;base64," +
QByteArray(argUserStyleString).toBase64());
page.settings()->setUserStyleSheetUrl(data);
}
if (argIconDbPath != NULL)
// TODO: does this need any syntax checking?
page.settings()->setIconDatabasePath(argUserStyle);
// The documentation does not say, but it seems the mainFrame
// will never change, so we can set this here. Otherwise we'd
// have to set this in snapshot and trigger an update, which
// is not currently possible (Qt 4.4.0) as far as I can tell.
page.mainFrame()->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
page.mainFrame()->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
page.setViewportSize(QSize(argMinWidth, argMinHeight));
#if CUTYCAPT_SCRIPT
// javaScriptWindowObjectCleared does not get called on the
// initial load unless some JavaScript has been executed.
page.mainFrame()->evaluateJavaScript(QString(""));
app.connect(page.mainFrame(),
SIGNAL(javaScriptWindowObjectCleared()),
&main,
SLOT(JavaScriptWindowObjectCleared()));
#endif
app.connect(&manager,SIGNAL(finished(QNetworkReply *)), &main,SLOT(HtmlDownloadFinished(QNetworkReply *)));
QNetworkReply *reply = manager.get(req);
app.connect(reply,SIGNAL(error(QNetworkReply::NetworkError)), &main,SLOT(HtmlDownloadError(QNetworkReply::NetworkError)));
return app.exec();
}