Qt操作xml引发内部异常(Qt5Xml.lib和Qt5Xmld.lib)

在VS2012中使用QT5.1，加载QtXml来操作xml档。可是出了一个很奇怪的问题。下面是实现代码

#include "XmlTest.h"
#include <QtDebug>
 
void XmlTest::write()
{
    QDomDocument document;
    QDomElement d=document.createElement("document");
    d.setAttribute("name","DocName");
 
    QDomElement a=document.createElement("author");
    a.setAttribute("name","AuthorName");
 
    QDomText text=document.createTextNode("Some text");
 
    document.appendChild(d);
    d.appendChild(a);
    d.appendChild(text);
 
    QFile file("simple.xml");
    if (!file.open(QIODevice::WriteOnly|QIODevice::Text))
    {
        qDebug("Failed to open file for writing.");
        return;
    }
 
    QTextStream stream(&file);
    stream<<document.toString();    
    file.close();
}