QJsonParseError::errorString() == “unterminated object“

 
    QFile file("D:/app/StringTest/doc.json");
    if (file.open(QIODevice::ReadOnly | QIODevice::Text))
    {
        QString text = file.readAll();
        qDebug() << text.toUtf8();
 
        QJsonParseError error;
        QJsonDocument doc = QJsonDocument::fromJson(text.toUtf8(), &error);
        if (doc.isNull())
        {
            qDebug() << "doc is null";
        }
        if (!doc.isObject())
        {
            qDebug() << "doc is not object";
        }
        if (error.error != QJsonParseError::NoError)
        {
            qDebug() << "error != NoError " << error.errorString();
        }
    }

打印结果：

"{\n\t[\n\t{\n\t\t\"name\": \"QianLong\",\n\t\t\"age\": 69,\n\t\t\"address\": \"ZiJinCheng\"\n\t},\n\t{\n\t\t\"name\": \"ZhaoHui\",\n\t\t\"age\": 39,\n\t\t\"address\": \"XinJiang\"\n\t},\n\t{\n\t\t\"name\": \"HeShen\",\n\t\t\"age\": 52,\n\t\t\"address\": \"BeiHai\"\n\t}\n\t]\n}"

doc is null

doc is not object

error != NoError "unterminated object"

解决方案：文本文件中的Json数据格式有误，可以将其改为数组格式或者重新更改整体格式

数组格式：[\n\t[\n\t{\n\t\t\"name\": \"QianLong\",\n\t\t\"age\": 69,\n\t\t\"address\": \"ZiJinCheng\"\n\t},\n\t{\n\t\t\"name\": \"ZhaoHui\",\n\t\t\"age\": 39,\n\t\t\"address\": \"XinJiang\"\n\t},\n\t{\n\t\t\"name\": \"HeShen\",\n\t\t\"age\": 52,\n\t\t\"address\": \"BeiHai\"\n\t}\n\t]\n]