Qt5 http/HTTPS访问 以及JSON解析的实用

 ?1 #include "mywidget.h" ?2 #include "ui_mywidget.h" ?3 #include <QUrl> ?4 #include <QDebug> ?5 #include <QByteArray> ?6 #include <QSslConfiguration> ?7 #include <QJsonDocument> ?8 #include <QJsonParseError> ?9 #include <QJsonObject> 10 #include <QJsonValue> 11 MyWidget::MyWidget(QWidget *parent) : 12 ????QWidget(parent), 13 ????ui(new Ui::MyWidget) 14 { 15 ????ui->setupUi(this); 16 ????QUrl url; 17 ????m_AccessManager = new QNetworkAccessManager(this); 18 ????url.setUrl("http://ip.taobao.com/service/getIpInfo2.php"); 19 ????QSslConfiguration config; 20 ????config.setPeerVerifyMode(QSslSocket::VerifyNone); 21 ????config.setProtocol(QSsl::TlsV1SslV3); 22 ????m_Request.setSslConfiguration(config); 23 ????m_Request.setUrl(url); 24 ????QByteArray sendData; 25 ????sendData = QString::fromStdString("ip=27.106.204.0").toLocal8Bit(); 26 ????m_Request.setRawHeader("Accept","*/*"); 27 ????m_Request.setRawHeader("Accept-Language","zh-CN,zh;q=0.9"); 28 ????m_Request.setRawHeader("Content-Type","application/x-www-form-urlencoded"); 29 ????m_Request.setRawHeader("User-Agent","Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36"); 30 ????m_Request.setRawHeader("X-Requested-With:","XMLHttpRequest"); 31 ????m_Request.setRawHeader("Referer","http://ip.taobao.com/ipSearch.html"); 32 ????m_Reply = m_AccessManager->post(m_Request,sendData); 33 ?34 ????connect(m_AccessManager,&QNetworkAccessManager::finished,this,&MyWidget::ReplyReadFunc); 35 ?36 } 37 ?38 MyWidget::~MyWidget() 39 { 40 ????delete ui; 41 } 42 void MyWidget::ReplyReadFunc(QNetworkReply* Reply) 43 { 44 ????int NetworkErrors = -1; 45 ????NetworkErrors = Reply->error(); 46 ????QString ip; 47 ????QString country; 48 ????QString region; 49 ????QString isp; 50 ?51 ????if(NetworkErrors ==QNetworkReply::NoError) 52 ????{ 53 ????????QByteArray databuff = Reply->readAll(); 54 ????????QString result = QString::fromStdString(databuff.toStdString()).toUtf8(); 55 ????????QJsonDocument document; 56 ????????QJsonParseError ParseError; 57 ????????document =QJsonDocument::fromJson(result.toUtf8(),&ParseError); 58 ????????if(!document.isNull() && ParseError.error == QJsonParseError::NoError) 59 ????????{ 60 ????????????if(document.isObject()) 61 ????????????{ 62 ????????????????QJsonObject Object = document.object(); //获取文档对象 63 ????????????????if(!Object.isEmpty()) 64 ????????????????{ 65 ?66 ????????????????????if(Object.contains("data")) //先判断有没有 67 ????????????????????{ 68 ????????????????????????QJsonValue dataObj = Object.value("data"); 69 ????????????????????????if(dataObj.isObject()) ?//判断是否是对象 70 ????????????????????????{ 71 ????????????????????????????QJsonObject ObjectData = dataObj.toObject(); 72 ????????????????????????????if(ObjectData.contains("ip")) 73 ????????????????????????????{ 74 ????????????????????????????????QJsonValue ipVal = ObjectData.value("ip"); 75 ????????????????????????????????if(ipVal.isString()) 76 ????????????????????????????????{ 77 ????????????????????????????????????ip = ipVal.toString(); 78 ????????????????????????????????} 79 ????????????????????????????} 80 ????????????????????????????if(ObjectData.contains("region")) 81 ????????????????????????????{ 82 ????????????????????????????????QJsonValue regionVal = ObjectData.value("region"); 83 ????????????????????????????????if(regionVal.isString()) 84 ????????????????????????????????{ 85 ????????????????????????????????????region = regionVal.toString(); 86 ????????????????????????????????} 87 ????????????????????????????} 88 ????????????????????????????if(ObjectData.contains("isp")) 89 ????????????????????????????{ 90 ????????????????????????????????QJsonValue ispVal = ObjectData.value("isp"); 91 ????????????????????????????????if(ispVal.isString()) 92 ????????????????????????????????{ 93 ????????????????????????????????????isp = ispVal.toString(); 94 ????????????????????????????????} 95 ????????????????????????????} 96 ????????????????????????} 97 ????????????????????} 98 ????????????????} 99 ????????????}100 ????????????country+="您的ip:"+ip;101 ????????????country+="所在城市:"+region;102 ????????????country+="运营商:"+isp;103 104 ????????????qDebug()<<country.toStdString().c_str();105 ????????}106 ????}107 }