JSTL XML 解析xml 的Tag标签
The <x:parse> tag is used to parse XML data specified either via an attribute or in the tag body.
准备所必须的jar 包 以下三个jar包缺一不可:
jstl.jar
standard.jar
xalan-2.7.1.jar
将这些jar包放在tomcat 服务器器下的 webapps\ project 下的 \WEB-INF\lib 里即可
books.xml 和 test.jsp放在同一目录
Attribute:
The <x:parse> tag has following attributes:
| var | A variable that contains the parsed XML data | No | None |
| xml | Text of the document to parse (String or Reader) | No | Body |
| systemId | The system identifier URI for parsing the document | No | None |
| filter | The filter to be applied to the source document | No | None |
| doc | XML document to be parsed | No | Page |
| scope | Scope of the variable specified in the var attribute. | No | Page |
| varDom | A variable that contains the parsed XML data. | No | Page |
| scopeDom | Scope of the variable specified in the varDom attribute. | No | Page |
Example:
Following example shows how parse can be used to read external XML file and it can be parsed:
We have seen how we can parse XML from the body of the given document. Now let us put following content in books.xml file:
<?xml version="1.0" encoding="GBK"?> <books> <book> <name>Padam History</name> <author>ZARA</author> <price>100</price> </book> <book> <name>Great Mistry</name> <author>NUHA</author> <price>2000</price> </book> <book number="index1"> <values-list> <values> <value>hello</value> <value>jason</value> <value>2000</value> <value>www.baidu.com</value> </values> <values> <value>hello</value> <value>jason</value> <value>2000</value> <value>www.goole.com</value> </values> </values-list> </book> </books>
Now try the following test.jsp, keeping in the same directory:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="x" uri="http://java.sun.com/jsp/jstl/xml" %>
<html>
<head>
<title>JSTL x:parse Tags</title>
</head>
<body>
<h3>Books Info:</h3>
<c:import var="bookInfo" url="books.xml"/>
<x:parse xml="${bookInfo}" var="rss"/>
<b>The title of the first book is</b>:
<x:out select="$rss/books/book[1]/name" />
<br>
<b>The price of the second book</b>:
<x:out select="$rss/books/book[2]/price" />
<br>
<x:forEach varStatus="status" select="$rss/books/book[@number='index1']/values-list/values">
<li>
<a href="<x:out select="value[4]" escapeXml="false"/>" target="_blank">
<x:out select="value[4]" />
</a>
</li>
</x:forEach>
</body>
</html>
Now try to access above JSP using http://localhost:8080/test.jsp, this would produce following result:
Books Info: The title of the first book is: Padam History The price of the second book: 2000 www.baidu.com www.goole.com