QJson生成文件和解析文件
作者:互联网
QJson生成.json文件
生成简单的json文件
QVariantHash data; QVariantHash patientData; patientData.insert("patient ID","22334"); patientData.insert("Name","ZYL_YY"); patientData.insert("age","26"); patientData.insert("clinicalData","wwwww"); patientData.insert("Selected site","lever"); patientData.insert("Selected mode","pulse mode"); data.insert("patientInformation",patientData); QJsonObject rootobj = QJsonObject::fromVariantHash(data); QJsonDocument document; document.setObject(rootobj); QByteArray byte_array = document.toJson(); QString json_str = (byte_array); QFile file("/home/wxh1/1.json"); if(!file.open(QIODevice::ReadWrite | QIODevice::Text | QIODevice::Truncate)) { qDebug()<<"file error"; } QTextStream in(&file); in<<json_str; file.close();
生成的jison文件
{ "patientInformation": { "Name": "ZYL_YY", "Selected mode": "pulse mode", "Selected site": "lever", "age": "26", "clinicalData": "wwwww", "patient ID": "22334" } }
解析json文件QFile file("/home/wxh1/1.json");
// file.open(QIODevice::ReadOnly | QIODevice::Text); //
QString value = file.readAll(); file.close(); // QJsonParseError jsonError; QJsonDocument doucement = QJsonDocument::fromJson(value.toUtf8(),&jsonError); // if(!doucement.isNull()&&(jsonError.error == QJsonParseError::NoError)) { // if(doucement.isObject()) { // _jsonObject = doucement.object(); QVector<QString> patien_item(6); // if(_jsonObject.contains("patientInformation")) { // QJsonValue jsonValueList = _jsonObject.value(QStringLiteral("patientInformation")); QJsonObject item = jsonValueList.toObject(); // patien_item[0]=item["Name"].toString(); patien_item[1]=item["Selected mode"].toString(); patien_item[2]=item["Selected site"].toString(); patien_item[3]=item["patient ID"].toString(); patien_item[4]=item["age"].toString(); patien_item[5]=item["clinicalData"].toString(); } } }
构建json数组
QJsonArray probePlacementData; for(int i =0;i<5;i++) { QJsonObject obj; obj.insert("voltage","3000"); obj.insert("distance","2.4"); obj.insert("pulseLength","100"); obj.insert("numpulse","90"); probePlacementData.append(obj); } data.insert("probePlacementData",probePlacementData); QJsonObject rootobj = QJsonObject::fromVariantHash(data); QJsonDocument document; document.setObject(rootobj); QByteArray byte_array = document.toJson(); QString json_str = (byte_array); QFile file("/home/wxh1/1.json"); if(!file.open(QIODevice::ReadWrite | QIODevice::Text | QIODevice::Truncate)) { qDebug()<<"file error"; } QTextStream in(&file); in<<json_str; file.close();
生成的json文件
{ "probePlacementData": [ { "distance": "2.4", "numpulse": "90", "pulseLength": "100", "voltage": "3000" }, { "distance": "2.4", "numpulse": "90", "pulseLength": "100", "voltage": "3000" }, { "distance": "2.4", "numpulse": "90", "pulseLength": "100", "voltage": "3000" }, { "distance": "2.4", "numpulse": "90", "pulseLength": "100", "voltage": "3000" }, { "distance": "2.4", "numpulse": "90", "pulseLength": "100", "voltage": "3000" } ] }
解析json文件
struct _probePlacementDataStruct { QString voltage; QString distance; QString pulseLegth; QString numpulse; }; QFile file("/home/wxh1/1.json"); // file.open(QIODevice::ReadOnly | QIODevice::Text); //
QString value = file.readAll(); file.close(); // QJsonParseError jsonError; QJsonDocument doucement = QJsonDocument::fromJson(value.toUtf8(),&jsonError); // if(!doucement.isNull()&&(jsonError.error == QJsonParseError::NoError)) { // if(doucement.isObject()) { // _jsonObject = doucement.object(); if(_jsonObject.contains(QStringLiteral("probePlacementData"))) { QJsonValue arrayVaule = _jsonObject.value(QStringLiteral("probePlacementData")); if(arrayVaule.isArray()) { QJsonArray array = arrayVaule.toArray(); for(int i = 0;i<array.size();i++) { QJsonValue iconArray = array.at(i); QJsonObject childrens = iconArray.toObject(); QString pAdd = childrens["P+"].toString(); QString pdec = childrens["P-"].toString(); QString voltage = childrens["voltage"].toString(); QString distance = childrens["distance"].toString(); QString pulseLength = childrens["pulseLength"].toString(); QString numPulse = childrens["numpulse"].toString(); QString v_cm = childrens["v/cm"].toString(); _probePlacementDataStruct list; list.voltage = voltage; list.distance = distance; list.pulseLegth = pulseLength; list.numpulse = numPulse; } } } } }
标签:文件,doucement,insert,item,json,file,patientData,解析,QJson 来源: https://www.cnblogs.com/wxh-53919/p/10910495.html