Qt QJson解析json数据

开发者梓轩技术 2022年11月18日

0 收藏 857 点赞 4,121 浏览 1213 个字

Qt QJson解析json数据

//加载根目录文件

void TeslaManageData::loadRootFolderFiles()
{
    QNetworkAccessManager *manager = new QNetworkAccessManager(this);;
    QNetworkRequest network_request;
    QByteArray post_data;    network_request.setUrl(QUrl("http://121.60.49.57:9080/tsinghuaVCService/init/selectAllFolder.action"));
    network_request.setHeader(QNetworkRequest::UserAgentHeader, "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 UBrowser/6.2.4098.3 Safari/537.36");    connect(manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyFinished(QNetworkReply*)));    //发送请求
    manager->get(network_request);
}

void TeslaManageData::replyFinished(QNetworkReply* networkReply)
{
    QTextCodec *codec = QTextCodec::codecForName("utf8");
    QByteArray allData = networkReply->readAll();
    //使用utf8编码，这样才可以显示中文
    QString all = codec->toUnicode(allData);    QJsonParseError jsonError;
    QJsonDocument doucment = QJsonDocument::fromJson(allData, &jsonError);  // 转化为 JSON 文档
    if (!doucment.isNull() && (jsonError.error == QJsonParseError::NoError)) {  // 解析未发生错误
        QJsonArray jsonArray1 = doucment.array();        QJsonArray::Iterator iter1;
        for (iter1 = jsonArray1.begin();iter1 != jsonArray1.end();++iter1)
        {
            QJsonObject jsonObject1 = (*iter1).toObject();
            parseJsonObjectI(jsonObject1);
        }
    }
    networkReply->deleteLater();
}