QWebEngineView拦截Url请求设置

QWebEngineView拦截Url请求设置

QWebEngineUrlRequestInterceptor类提供了一个拦截URL请求抽象基类，可通过实现QWebEngineUrlRequestInterceptor::interceptRequest接口拦截并修改相应的UIL请求，以达到相应需求效果，比如设置“Accept-Language”。

class TWebEngineUrlRequestInterceptor : public QWebEngineUrlRequestInterceptor
{
Q_OBJECT

public:
TWebEngineUrlRequestInterceptor(QObject *parent = Q_NULLPTR);
void interceptRequest(QWebEngineUrlRequestInfo &info);
};

　　拦截接口实现

TWebEngineUrlRequestInterceptor::TWebEngineUrlRequestInterceptor(QObject *parent)
: QWebEngineUrlRequestInterceptor(parent)
{
}

void TWebEngineUrlRequestInterceptor::interceptRequest(QWebEngineUrlRequestInfo &info)
{
QString strInfo = "";
switch (info.resourceType())
{
case 0:  //Top level page
strInfo = "ResourceTypeMainFrame";
break;

case 1:  //Frame
strInfo = "ResourceTypeSubFrame";
break;

case 2:  //CSS stylesheet
strInfo = "ResourceTypeStylesheet";
break;

case 3:  //External script
strInfo = "ResourceTypeScript";
break;

case 4:  //Image
strInfo = "ResourceTypeImage";
break;

case 5:  //Font
strInfo = "ResourceTypeFontResource";
break;

case 6:  //Sub-resource
strInfo = "ResourceTypeSubResource";
break;

case 7:  //Plugin object
strInfo = "ResourceTypeObject";
break;

case 8:  //Media resource
strInfo = "ResourceTypeMedia";
break;

case 9:  //Resource of dedicated worker
strInfo = "ResourceTypeWorker";
break;

case 10:  //Resource of shared worker
strInfo = "ResourceTypeSharedWorker";
break;

case 11:  //Explicitly requested prefetch
strInfo = "ResourceTypePrefetch";
break;

case 12:  //Favicon
strInfo = "ResourceTypeFavicon";
break;

case 13: //XML http request
strInfo = "ResourceTypeXhr";
break;

case 14: //Ping request
strInfo = "ResourceTypePing";
break;

case 15: //Resource of service worker
strInfo = "ResourceTypeServiceWorker";
break;

case 16: //Unknown resource
strInfo = "ResourceTypeUnknown";
break;

default:
strInfo = "Unknown type";
break;
}

qDebug() << "RequestMethod===" << info.requestMethod() << "\n"
<< "RequestUrl===" << info.requestUrl() << "\n"
<< "RequestType===" << strInfo;

//Set the value of the Accept-Language HTTP request-header.
info.setHttpHeader("Accept-Language", "zh-CN");
}

　　接口调用，通过设置默认QWebEngineProfile属性

TWebEngineUrlRequestInterceptor *webInterceptor = new TWebEngineUrlRequestInterceptor();
QWebEngineProfile::defaultProfile()->setRequestInterceptor(webInterceptor);

自己的实际代码例子：

#include "cmywebengineurlrequestinterceptor.h"
#include "QDebug"
#include "../../vDownLoadUi/src/vIoDownfile_global.h"
#include "../../common/common/common.h"
#include "../../vIoMainUi/src/mainframe.h"

extern MainFrame *g_pMainframe;
Downfilewidget *g_DownFileDialog1 = NULL;
extern Downfilewidget *g_DownFileDialog;
CMyWebEngineUrlRequestInterceptor::CMyWebEngineUrlRequestInterceptor(QObject *parent)
: QWebEngineUrlRequestInterceptor(parent)
{
}

bool CMyWebEngineUrlRequestInterceptor::LoadDownfileUISO()
{
CreateObjectPtr CreateObjPtr = NULL;
ReleaseObjectPtr ReleaseObjPtr = NULL;
bool z_bRet = InitDllImport("vrvlib/libvDownLoadUi.so", CreateObjPtr, ReleaseObjPtr);
if (!z_bRet || NULL == CreateObjPtr || NULL == ReleaseObjPtr)
{
QMessageBox msgBox;
msgBox.setText("InitDllImport libvDownLoadUi.so failed.");
msgBox.exec();
return false;
}

g_DownFileDialog1 = (Downfilewidget*)CreateObjPtr("DownLoadUi");
if (g_DownFileDialog1 == NULL)
{
QMessageBox msgBox;
msgBox.setText("DownLoadUi new failed.");
msgBox.exec();
return false;
}
return true;
}
bool g_test = false;

void CMyWebEngineUrlRequestInterceptor::interceptRequest(QWebEngineUrlRequestInfo &info)
{
//    if (g_test == false)
//    {
//        g_test = true;
//        emit g_MainFrame->signal_ShowDownLoadUI("207830", 2);
//        //g_DownFileDialog->DownloadFile("207830", 2, 1, 1);
//    }

QString strInfo = "";
switch (info.resourceType())
{
case 0:  //Top level page
strInfo = "ResourceTypeMainFrame";
break;

case 1:  //Frame
strInfo = "ResourceTypeSubFrame";
break;

case 2:  //CSS stylesheet
strInfo = "ResourceTypeStylesheet";
break;

case 3:  //External script
strInfo = "ResourceTypeScript";
break;

case 4:  //Image
strInfo = "ResourceTypeImage";
break;

case 5:  //Font
strInfo = "ResourceTypeFontResource";
break;

case 6:  //Sub-resource
strInfo = "ResourceTypeSubResource";
break;

case 7:  //Plugin object
strInfo = "ResourceTypeObject";
break;

case 8:  //Media resource
strInfo = "ResourceTypeMedia";
break;

case 9:  //Resource of dedicated worker
strInfo = "ResourceTypeWorker";
break;

case 10:  //Resource of shared worker
strInfo = "ResourceTypeSharedWorker";
break;

case 11:  //Explicitly requested prefetch
strInfo = "ResourceTypePrefetch";
break;

case 12:  //Favicon
strInfo = "ResourceTypeFavicon";
break;

case 13: //XML http request
strInfo = "ResourceTypeXhr";
break;

case 14: //Ping request
strInfo = "ResourceTypePing";
break;

case 15: //Resource of service worker
strInfo = "ResourceTypeServiceWorker";
break;

case 16: //Unknown resource
strInfo = "ResourceTypeUnknown";
break;

default:
strInfo = "Unknown type";
break;
}

//    qDebug()<< "RequestMethod===" << info.requestMethod() << "\n"
//        << "RequestUrl===" << info.requestUrl() << "\n"
//        << "RequestType===" << strInfo;

QString z_TaskSerial = "";
int z_TaskType = 0;
//?UserAccount=n2&TaskSerial=1234567&TaskType=1&DownAll=0
QUrl z_url(info.requestUrl());
QString z_strUrl = z_url.toString();
//QString z_strUrl = QString("downloadurl/downfile.html?UserAccount=n2&TaskSerial=1234567&TaskType=1&DownAll=0");
QString z_strDownloadurl = QString("downloadurl/downfile.html");

if(strstr(z_strUrl.toStdString().c_str(), z_strDownloadurl.toStdString().c_str()))
{
qDebug()<<"z_strUrl = "<<z_strUrl;
QStringList z_StringList = z_strUrl.split(QRegExp("&"));
QString z_Tmp = z_StringList.at(1);
z_TaskSerial = z_Tmp.section('=', 1, 1);
z_Tmp = z_StringList.at(2);
z_TaskType = z_Tmp.section('=', 1, 1).toInt();
//LoadDownfileUISO();
if(g_DownFileDialog != NULL)
{
//g_DownFileDialog->DownloadFile(z_TaskSerial, z_TaskType, 1, 1);
emit g_pMainframe->signal_ShowDownLoadUI(z_TaskSerial, z_TaskType);
//g_DownFileDialog->DownloadFile("207830", 2, 1, 1);
}
}

//Set the value of the Accept-Language HTTP request-header.
//    info.setHttpHeader("Accept-Language", "zh-CN");

//
//Blocks this request if shouldBlock is true, so that it will not proceed.
//This function can be used to prevent navigating away from a given domain, for example.
//    info.block(true);

}

#ifndef CMYWEBENGINEURLREQUESTINTERCEPTOR_H
#define CMYWEBENGINEURLREQUESTINTERCEPTOR_H

#include <QWebEngineUrlRequestInterceptor>

class CMyWebEngineUrlRequestInterceptor : public QWebEngineUrlRequestInterceptor
{
Q_OBJECT

public:
CMyWebEngineUrlRequestInterceptor(QObject *parent = Q_NULLPTR);
void interceptRequest(QWebEngineUrlRequestInfo &info);
bool LoadDownfileUISO();
};

#endif // CMYWEBENGINEURLREQUESTINTERCEPTOR_H

CMyWebEngineUrlRequestInterceptor *webInterceptor = new CMyWebEngineUrlRequestInterceptor();
QWebEngineProfile::defaultProfile()->setRequestInterceptor(webInterceptor);