因此，在我创建QJsonModel，加载数据并设置treeView模型之后，它会将数据正常加载到treeView中。虽然，当我在完成网络请求（subprocess.check_process(cmd, shell=True, stdout=False)
）后执行此操作时，它并不是真的。我可以qDebug传递的Json数据，但是当它归结为Json加载和模型设置时。它没能完成。此外，由于某种原因，它不会从网络请求中设置Json，但如果我只是将其设置为从单独的按钮设置json，则json会成功添加。这意味着Json格式正确。 QJsonModel＆amp; QJsonItem是未提供Qt的外部类，位于here。
这是我的代码：
Mainwindow.h：
serviceRequestFinished(QNetworkReply* reply)Mainwindow.cpp
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QModelIndex>
#include <QItemSelection>
#include <QFile>
#include <QFileInfo>
#include <QList>
#include <QtNetwork/QNetworkAccessManager>
#include <QtNetwork/QNetworkRequest>
#include <QtNetwork/QNetworkReply>
#include <QStringList>
#include <QTimer>
#include <QUrl>
#include <QTreeWidgetItem>
#include <QJsonDocument>
#include <QJsonObject>
#include "qjsonmodel.h"
#include <QClipboard>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
void setJson(QString json);
void getPlaylistList(QString accessToken);
QString disableStreams();
void appendEditValues(int currentRow);
void addVectorItems();
void streamCheck();
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private slots:
void on_radioButtonNoStream_clicked()
{
streamCheck();
}
void on_radioButtonTwitchStream_clicked()
{
streamCheck();
}
void on_radioButtonYTStream_clicked()
{
streamCheck();
}
void on_pushButtonAddVid_clicked();
void on_pushButtonApplyAddVid_clicked();
void on_pushButtonDeleteSelection_clicked();
void on_pushButtonApplyAll_clicked();
public slots:
void serviceRequestFinished(QNetworkReply* reply);
void connectAPI(QString code);
signals:
void authenticate(QString accessCode);
private:
Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H
Main.cpp的：
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "authdialog.h"
#include <qDebug>
#include <QVector>
#include <QMessageBox>
#include <QStandardItemModel>
#include <QFile>
#include <QUrlQuery>
int val = 0;
int selected;
QVector<QString> vidTitles;
QVector<QString> vidUrls;
QVector<int> vidNumber;
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
streamCheck();
ui->groupBoxEditVideo->setEnabled(false);
connect(this, SIGNAL(authenticate(QString)), SLOT(connectAPI(QString)));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::streamCheck()
{
if (ui->radioButtonNoStream->isChecked())
{
ui->groupBoxStreamSetup->setEnabled(false);
ui->groupBoxStreamSetup->setTitle("No Stream Selected!");
}
else if (ui->radioButtonTwitchStream->isChecked())
{
ui->groupBoxStreamSetup->setEnabled(true);
ui->groupBoxStreamSetup->setTitle("Twitch Setup");
}
else if (ui->radioButtonYTStream->isChecked())
{
ui->groupBoxStreamSetup->setEnabled(true);
ui->groupBoxStreamSetup->setTitle("YouTube Stream Setup");
}
}
void MainWindow::on_pushButtonAddVid_clicked()
{
AuthDialog *auth = new AuthDialog(this);
auth->setModal(true);
auth->exec();
delete auth;
}
void MainWindow::setJson(QString json)
{
qDebug() << json;
QJsonModel * model = new QJsonModel;
model->loadJson(json.toUtf8());
ui->treeView->setModel(model);
delete model;
}
void MainWindow::getPlaylistList(QString accessToken)
{
QNetworkAccessManager *networkManager = new QNetworkAccessManager(this);
connect(networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(serviceRequestFinished(QNetworkReply*)));
//
QNetworkRequest request(QUrl("https://www.googleapis.com/youtube/v3/search?part=snippet&forMine=true&order=viewCount&type=video&access_token=" + accessToken));
networkManager->get(request);
}
QString MainWindow::disableStreams()
{
QString line = "";
QString test = "";
QFile file;
file.setFileName("C:/WampStack/apache2/htdocs/index.html");
file.open(QIODevice::ReadWrite);
QTextStream in(&file);
while(!in.atEnd())
{
line += in.readAll();
}
if (line.contains("<!--t-->") && !line.contains("<!--y-->"))
{
//Twitch Stream is on, must turn it off
test = line.replace("<!--t-->", "<!--t");
test = test.replace("><!--tt-->", ">tt-->");
return test;
}
else if (line.contains("<!--y-->") && !line.contains("<!--t-->"))
{
//YouTube Stream is on, must turn it off
test = line.replace("<!--y-->", "<!--y");
test = test.replace("><!--yy-->", ">yy-->");
return test;
}
else if (line.contains("<!--y-->") && line.contains("<!--t-->"))
{
test = line.replace("<!--y-->", "<!--y");
test = test.replace("><!--yy-->", ">yy-->");
test = test.replace("<!--t-->", "<!--t");
test = test.replace("><!--tt-->", ">tt-->");
return test;
}
else
{
return line;
}
file.close();
return line;
}
void MainWindow::connectAPI(QString code)
{
QNetworkAccessManager *networkManager = new QNetworkAccessManager(this);
connect(networkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(serviceRequestFinished(QNetworkReply*)));
QUrlQuery postData;
postData.addQueryItem("code", code);
postData.addQueryItem("client_id", "CLIENT-ID");
postData.addQueryItem("client_secret", "CLIENT-SECRET");
postData.addQueryItem("redirect_uri", "REDIRECT-URI");
postData.addQueryItem("grant_type", "authorization_code");
QNetworkRequest request(QUrl("https://accounts.google.com/o/oauth2/token"));
request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
networkManager->post(request, postData.toString(QUrl::FullyEncoded).toUtf8());
}
void MainWindow::appendEditValues(int currentRow)
{
}
void MainWindow::addVectorItems()
{
}
void MainWindow::on_pushButtonApplyAddVid_clicked()
{
}
void MainWindow::on_pushButtonDeleteSelection_clicked()
{
QMessageBox::StandardButton reply;
reply = QMessageBox::question(this, "Are you sure?", "Do you want to permanently delete this entry?", QMessageBox::Yes|QMessageBox::No);
if (reply == QMessageBox::Yes)
{
}
addVectorItems();
}
void MainWindow::on_pushButtonApplyAll_clicked()
{
QString line = disableStreams();
QFile::remove("C:/WampStack/apache2/htdocs/index.html");
QFile file;
file.setFileName("C:/WampStack/apache2/htdocs/index.html");
file.open(QIODevice::ReadWrite);
//Start code for streaming
if (ui->radioButtonTwitchStream->isChecked() && line.contains("<!--t") && line.contains(">tt-->") && !line.contains("<!--t-->") && !line.contains("<!--tt-->"))
{
QString test = line.replace("<!--t", "<!--t-->");
test = line.replace(">tt-->", "><!--tt-->");
QTextStream stream( &file );
stream << test;
}
else if (ui->radioButtonYTStream->isChecked() && line.contains("<!--y") && line.contains(">yy-->") && !line.contains("<!--y-->") && !line.contains("<!--yy-->"))
{
QString test = line.replace("<!--y", "<!--y-->");
test = test.replace(">yy-->", "><!--yy-->");
QTextStream stream( &file );
stream << test;
}
else if (ui->radioButtonNoStream->isChecked())
{
QTextStream stream(&file);
stream << line;
}
//End code for streaming
file.close();
}
void MainWindow::serviceRequestFinished(QNetworkReply* reply)
{
QByteArray json = reply->readAll();
QString output = QString::fromUtf8(json);
QJsonDocument settdoc = QJsonDocument::fromJson(output.toUtf8());
QJsonObject sett2 = settdoc.object();
if (val == 0)
{
val++;
getPlaylistList(sett2.value(QString("access_token")).toString());
}
else if (val == 1)
{
setJson(output.toUtf8());
}
}