Question

以下是我的xml文件

<?xml version="1.0" encoding="UTF-8"?>
<bookstore>

<book category="cooking">
<book>
    <bookID>1111</bookID>
</book>
<title lang="en">Everyday Italian</title>
<author>Giada De Laurentiis</author>
<year>2005</year>
<price>30.00</price>
</book>

<book category="children">
<book>
    <bookID>54655</bookID>
</book>
<title lang="en">Harry Potter</title>
<author>J K. Rowling</author>
<year>2005</year>
<price>29.99</price>
</book>

<book category="web">
<book>
    <bookID>5556</bookID>
</book>
<title lang="en">XQuery Kick Start</title>
<author>James McGovern</author>
<author>Per Bothner</author>
<author>Kurt Cagle</author>
<author>James Linn</author>
<author>Vaidyanathan Nagarajan</author>
<year>2003</year>
<price>49.99</price>
</book>

<book category="web" cover="paperback">
<book>
    <bookID>1111</bookID>
</book>
<title lang="en">Learning XML</title>
<author>Erik T. Ray</author>
<year>2003</year>
<price>39.95</price>
</book>

</bookstore>

我需要显示书籍的“标题”。

下面用于显示数据的asp代码

<%
'' #Load XML

Set xml= Server.CreateObject("Msxml2.DOMDocument.3.0")
    xml.async = False
    xml.load (Server.MapPath("test.xml"))

    if xml.parseError.errorcode<>0 then
    response.write   "error handling code" &xml.parseError.errorcode
    else

        Set objLst= xml.getElementsByTagName("bookstore").item(0).getElementsByTagName("book")
        TotalBooks = (objLst.Length)-1
        For i=0 to eval(TotalBooks)
            response.write xml.getElementsByTagName("bookstore").item(0).getElementsByTagName("book").item(i).getElementsByTagName("title").item(0).text&"<br/>"
        Next

    end if

%>

但是“objLst.length”显示了<book>

的子节点

因此导致错误

代码仅显示第一个节点书名。它不会进入第二个节点。我修好了吗？

i need out put like below

Everyday Italian

Harry Potter

XQuery Kick Start

Learning XML

Answer 1

如果您不能将System.Xml.Linq用作@sonjz建议，那么您可以使用SelectNodes和XPath表达式

set nodes = xml.documentElement.selectNodes("//book/title")

for each node in nodes
    response.write node.text & "<br/>"
next

Answer 2

使用System.Xml.Linq，这将是最简单的。

将其加载到XElement并使用Linq进行查询。

XDocument test = XDocument.Load(xmlFilename); // load from string if you want
XElement cooking = test.Element("bookstore")
                       .Descendants("book")
                       .Where(e => e.Attribute("category" => "cooking")
                       .FirstOrDefault();

如何从xml文件中选择一个节点？

2 个答案: