qt截获html请求（继承QNetworkAccessManager和QNetworkReply）

QtWebkit加载html页面，html中会有很多的请求，比如<img id="testImg" src="http://*.jpg" width="200" height="200" title="test图片"/>等等，如果想截获这些请求，然后自定义应答...

1.定义一个类，继承QNetworkAccessManager（请求） #ifndef NETWORKACCESSMANAGER_H #define NETWORKACCESSMANAGER_H   #include <QtNetwork/QNetworkAccessManager> #include <QtNetwork/QNetworkProxy> #include <QtNetwork/QNetworkReply> #include <QtNetwork/QNetworkRequest>   class NetworkAccessManager : public QNetworkAccessManager {       Q_OBJECT   public:     explicit NetworkAccessManager(QNetworkAccessManager *manager, QObject *parent);   protected:     QNetworkReply * createRequest(QNetworkAccessManager::Operation operation,                        const QNetworkRequest &request, QIODevice *device); };   #endif // NETWORKACCESSMANAGER_H   #include "networkaccessmanager.h"   #include <QtCore/QDebug>   NetworkAccessManager::NetworkAccessManager(QNetworkAccessManager *manager, QObject *parent)     : QNetworkAccessManager(parent) {     setCache(manager->cache());     setCookieJar(manager->cookieJar());     setProxy(manager->proxy());     setProxyFactory(manager->proxyFactory()); }   QNetworkReply * NetworkAccessManager::createRequest(QNetworkAccessManager::Operation operation,                    const QNetworkRequest &request, QIODevice *device) {     if (request.url().scheme() != "http")             return QNetworkAccessManager::createRequest(operation, request, device);     else      return new BlobReply(request.url); } 2.定义一个类，继承QNetworkReply（应答） #ifndef BLOBREPLY_H #define BLOBREPLY_H   #include <QtNetwork/QNetworkReply>   class BlobReply : public QNetworkReply {     Q_OBJECT   public:     BlobReply(const QUrl &url);     void abort();   protected:     qint64 readData(char *data, qint64 maxSize);   };   #endif // BLOBREPLY_H   #include "blobreply.h"   #include <QtCore/QDebug>   BlobReply::BlobReply(const QUrl &url)     : QNetworkReply() {     qDebug() << url.toString(); }   void BlobReply::abort() {   }   qint64 BlobReply::readData(char *data, qint64 maxSize) {     return -1; } 3.在初始化webview的时候，实例化上面的东东 QNetworkAccessManager *oldManager = ui->webView->page()->networkAccessManager(); NetworkAccessManager *newManager = new NetworkAccessManager(oldManager, this); ui->webView->page()->setNetworkAccessManager(newManager); ui->webView->page()->setForwardUnsupportedContent(true);   如有技术问题，请咨询博主QQ...   http://blog.sina.com.cn/s/blog_671732440100y3xx.html

qt截获html请求（继承QNetworkAccessManager和QNetworkReply）

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