Qt XQuery 到 QStringList

发布于 2024-08-26 10:08:31 字数 851 浏览 7 评论 0 原文

我正在尝试使用 QtXmlQuery 从 XML 中提取一些数据。我想将其放入 QStringList 中。我尝试以下操作：

QByteArray in = "this is where my xml lives";
QBuffer received;
received.setData(in);
received.open(QIODevice::ReadOnly);

QXmlQuery query;
query.bindVariable("data", &received);
query.setQuery(NAMESPACE //contains definition of the t namespace
               "doc($data)//t:service/t:serviceID/text()");

QBuffer outb;
outb.open(QIODevice::ReadWrite);
QXmlSerializer s(query, &outb);
query.evaluateTo(&s);

qDebug() << "buffer" << outb.data(); //This works perfectly!

QStringList * queryResult = new QStringList();
query.evaluateTo(queryResult);

qDebug() << "string list" << *queryResult; //This gives me no output!

如您所见，当我通过 QXmlSerializer 将输出发送到 QBuffer 时，一切正常...但是当我尝试使用时我什么也没得到一个QStringList。

原文

I'm trying to use QtXmlQuery to extract some data from XML. I'd like to put this into a QStringList. I try the following:

QByteArray in = "this is where my xml lives";
QBuffer received;
received.setData(in);
received.open(QIODevice::ReadOnly);

QXmlQuery query;
query.bindVariable("data", &received);
query.setQuery(NAMESPACE //contains definition of the t namespace
               "doc($data)//t:service/t:serviceID/text()");

QBuffer outb;
outb.open(QIODevice::ReadWrite);
QXmlSerializer s(query, &outb);
query.evaluateTo(&s);

qDebug() << "buffer" << outb.data(); //This works perfectly!

QStringList * queryResult = new QStringList();
query.evaluateTo(queryResult);

qDebug() << "string list" << *queryResult; //This gives me no output!

As you can see, everything works fine when I send the output into a QBuffer via a QXmlSerializer... but I get nothing when I try to use a QStringList.