因此,我需要能夠解析可能包含命名空間前綴的xml文件。我試着用一個示例文件來做這件事,當我嘗試獲取一個節點列表時,即使當我指定一個沒有屬性前綴的節點時,它也會返回null。關於如何使用命名空間前綴解析xml非常困惑
我一直在試圖研究這個問題,它一直回到事實上,沒有定義的名稱空間前綴,它不會工作,所以我添加了我認爲會這樣做的代碼,但它仍然給相同的結果。下面是一些代碼,我補充說:
protected void Page_Load(object sender, EventArgs e)
{
xml.Load(Server.MapPath("~/SomeLesson/imsmanifest.xml"));
populateBaseNodes();
}
private void populateBaseNodes()
{
treeViewMenu.Nodes.Clear(); // Clear any existing items
TreeNode treenode = new TreeNode();
treenode.Text = "organizations";
XmlNodeList baseNodeList;
string xmlns = xml.DocumentElement.Attributes["xmlns"].Value;
XmlNamespaceManager nsmgr = new XmlNamespaceManager(xml.NameTable);
nsmgr.AddNamespace("adlcp", "http://www.adlnet.org/xsd/adlcp_v1p3");
nsmgr.AddNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
nsmgr.AddNamespace("imscp", "http://www.w3.org/2001/XMLSchema-instance");
nsmgr.AddNamespace("imsss", "http://www.w3.org/2001/XMLSchema-instance");
nsmgr.AddNamespace("schemaLocation", "http://www.w3.org/2001/XMLSchema-instance");
baseNodeList = xml.SelectNodes("/manifest/organizations/organization/item", nsmgr);
TextBox1.Text = baseNodeList.Count.ToString();
foreach (XmlNode xmlnode in baseNodeList)
{
TreeNode treeNodeCatalog = new TreeNode();
treeNodeCatalog.Text = xmlnode.Attributes["identifier"].Value;
treeNodeCatalog.SelectAction = TreeNodeSelectAction.Expand;
treeViewMenu.Nodes.Add(treeNodeCatalog);
}
treeViewMenu.CollapseAll();
}
(marc_s)下面是需要被解析有問題的XML:
<manifest identifier="Navigating_in_QuickBooks_-_Introduction_MANIFEST" version="1.3"
xmlns="http://www.imsglobal.org/xsd/imscp_v1p1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:imscp="http://www.imsglobal.org/xsd/imscp_v1p1"
xmlns:adlcp="http://www.adlnet.org/xsd/adlcp_v1p3"
xmlns:imsss="http://www.imsglobal.org/xsd/imsss"
xsi:schemaLocation=" http://www.imsglobal.org/xsd/imscp_v1p1 imscp_v1p1.xsd
http://www.imsglobal.org/xsd/imsss imsss_v1p0.xsd
http://www.adlnet.org/xsd/adlcp_v1p3 adlcp_v1p3.xsd
http://www.adlnet.org/xsd/adlseq_v1p3 adlseq_v1p3.xsd
http://www.adlnet.org/xsd/adlnav_v1p3 adlnav_v1p3.xsd">
<metadata>
<!-- not relevant here ... -->
</metadata>
<organizations default="TOC1">
<organization identifier="TOC1">
<title>Navigating in QuickBooks - Introductory Lesson</title>
<item identifier="I_SCO0" identifierref="SCO0">
<title>Navigating in QuickBooks - Introductory Lesson</title>
</item>
</organization>
</organizations>
<resources>
<!-- not relevant here ... -->
</resources>
</manifest>
對不起,這裏是有一些東西泛型化,以保護無辜的;-) XML –
哎呀,我似乎無法在此添加XML代碼它太大。 –
問題是,在xml中,整個文檔中使用的唯一前綴是我不解析的節點,它只使用adcp。在我解析的節點中沒有前綴,所以在Xpath中使用它是沒有意義的,是嗎? –