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当我使用QJsonObject.insert()并传递一个 QJsonObject （之前调用 remove() ）作为参数时，它不能正常工作。我认为在这里发布代码更清楚：

QJsonObject mainObj = myProJsonDoc.object();
        QJsonObject modulesObj = mainObj.take(QLatin1String("modules")).toObject();
        modulesObj.remove(QString::number(tempItem->moduleID));
        qDebug()<<modulesObj;
        qDebug()<<mainObj;
        mainObj.insert(QLatin1String("modules"),modulesObj);
        qDebug()<<mainObj<<(QJsonValue)modulesObj;

像这样，输出将是错误的：

QJsonObject({"0":{"info":"balabala..","input":{"0":""},"name":"test1","output":{"0":""}}})
QJsonObject({})
QJsonObject({"modules":{"":null}}) QJsonValue(object, QJsonObject({"0":{"info":"balabala..","input":{"0":""},"name":"test1","output":{"0":""}}}) )

如果我删除该行，请使用 remove()：

QJsonObject mainObj = myProJsonDoc.object();
        QJsonObject modulesObj = mainObj.take(QLatin1String("modules")).toObject();
        //modulesObj.remove(QString::number(tempItem->moduleID));
        qDebug()<<modulesObj;
        qDebug()<<mainObj;
        mainObj.insert(QLatin1String("modules"),modulesObj);
        qDebug()<<mainObj<<(QJsonValue)modulesObj;

这次进展顺利：

QJsonObject({"0":{"info":"balabala..","input":{"0":""},"name":"test1","output":{"0":""}},"1":{"info":"balabala..","input":{"0":""},"name":"","output":{"0":""}}})
QJsonObject({})
QJsonObject({"modules":{"0":{"info":"balabala..","input":{"0":""},"name":"test1","output":{"0":""}},"1":{"info":"balabala..","input":{"0":""},"name":"","output":{"0":""}}}}) QJsonValue(object, QJsonObject({"0":{"info":"balabala..","input":{"0":""},"name":"test1","output":{"0":""}},"1":{"info":"balabala..","input":{"0":""},"name":"","output":{"0":""}}}) )

你知道为什么吗？

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0 回答 0