QJson使用

准备QJson  
      1. 将release文件夹里面的libQJSon.a放到\lib 目录中。如D:\Qt\Desktop\Qt\4.8.1\lib 
   2. 在release文件夹里面找到QJSon.dll文件，将它放到\bin目录中
   3. 创建一个名为QJSon的文件夹，然后将之前的代码目录中的所有头文件（*.h和*.hh）都拷贝到新创建的QJSon的文件夹中， 
   将QJson文件夹放到D:\Qt\Desktop\Qt\4.8.1\include目录中
 
 使用QJson
   1.设置pro文件 
        LIBS     += -lqjson1.
   2.引入头文件 

        #include

-----------------------------------------------------

   通过网址获取json

  

QString QJsonParser::getHtml(QString url)
{
    QNetworkAccessManager *manager = new QNetworkAccessManager();
    QNetworkReply *reply = manager->get(QNetworkRequest(QUrl(url)));
    QByteArray responseData;
    QEventLoop eventLoop;
    QObject::connect(manager, SIGNAL(finished(QNetworkReply*)), &eventLoop, SLOT(quit()));
    eventLoop.exec();       //block until finish
    responseData = reply->readAll();
    return QString(responseData);
}

 将json数据进行解析

void QJsonParser::parseAttribute()
{
    QJson::Parser parser;
    bool ok;
    QString query = getHtml( m_url );
    QVariantMap result = parser.parse(query.toAscii(), &ok).toMap();
    QVariantMap::iterator it = result.begin();
    if(ok)
    {
        for(; it != result.end(); ++it)
        {
            QVariantMap sub = it.value().toMap();
            QVariantMap::iterator subit = sub.begin();
            m_appEntity = new AppEntity;
            m_appEntity->m_appid = it.key()+"|"+subit.value().toString();
            ++subit;
            m_appEntity->m_appimg = subit.value().toString();
            ++subit;
            m_appEntity->m_appname = subit.value().toString();
            ++subit;
            m_appEntity->m_appurl = subit.value().toString();
            m_appEntityList.append(m_appEntity);
        }

    }
    else
        qDebug()<<"error occuring";
}