[经验总结]XSLT开发总结
注意XSLT不能对输入文档的DOM树进行更改
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1 循环 for-each
xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text" indent="no"/>
<xsl:template match="a">
<xsl:for-each select="./node()">
<xsl:choose>
<!--Text node -->
<xsl:when test="./self::text()">StartATag<xsl:copy select="."/>EndATag</xsl:when>
<!--Element node-->
<xsl:when test="./self::*">StartBTag<xsl:copy-of select="./node()"/>EndBTag</xsl:when>
</xsl:choose>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
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2 div 定义元素与属性
<xsl:element name="div">
<xsl:attribute name="type"><xsl:text>maintitle</xsl:text></xsl:attribute>
<xsl:attribute name="name"><xsl:value-of select="./PAM_Attributes/PAM_Attr[@name='tqID']/@value"/></xsl:attribute>
<xsl:attribute name="class"><xsl:text>maintitle</xsl:text></xsl:attribute>
<xsl:copy-of select="./PAM_Attributes/following-sibling::*"/>
</xsl:element>
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3 在XSLT中操作多个XML文件
<xsl:variable name="docs1" select="document('./file1.XML')"/>
<xsl:copy-of select="$docs1"/>
<xsl:variable name="docs2" select="document('./file2.XML')"/>
<xsl:copy-of select="$docs2"/>
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4 无穷递归 错误提示
The XSL processor stack has overflowed - probable cause is
infinite template recursion.
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5 变量算术操作示例
<xsl:value-of select="$nsLength*10"/>
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6 xslt模板 参数 param
<?xml version="1.0" encoding="UTF-8" ?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:param name="Key1"/>
<xsl:param name="Path"/>
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7 Makefile for xsltproc
# For XSLT
PARSE = xsltproc
SRC = main1.xml
STYLESHEET = ../../xsl/makepaper.xsl
OUTPUT = ../../output.html
all : $(SRC) $(STYLE)
$(PARSE) $(STYLESHEET) $(SRC) > $(OUTPUT)
clean:
del $(OUTPUT)
==================================================================
8 libxslt库辅助工具xlstproc 用法示例
带参数的xslt para xslt
WURFL XSLT Tools
by Roland Guelle
The WURFL information is stored in XML. So the simpliest way to manipulate and transformm WURLF is XSLT.
If you have ideas or own XSLT, your help is welcome :)
These stylesheets are tested with xsltproc from the package libxslt. I only use this on the command line, if you need a GUI - there are lot of tools that helps you working with XSLT.
Some exslt extensions are used, so please check if your XSLT processor supports this.
If you have never worked with a XSLT processor or the command line before, add to WURFL and open the file with Firefox.
Available XSLTs
patch_wurfl.xsl
Patch WURFL with your own devices, groups and capabilities.
Example:
run: xsltproc --stringparam 'file' "your_patch_file" patch_wurfl.xsl wurfl.xml > wurfl_patched.xml
If you like to format the output (with xmllint):
run: xsltproc --stringparam 'file' "your_patch_file" patch_wurfl.xsl wurfl.xml | xmllint --format - > wurfl_patched.xml
If you like to format the output (with tidy):
run: xsltproc --stringparam 'file' "your_patch_file" patch_wurfl.xsl wurfl.xml | tidy -config tidy_config - > wurfl_patched.xml
check_wurfl.xsl
Checks your patched/modified WURFL consistency if:
id attribute is present and unique
user_agent attribute is present and unique
fall_back is available and could be resolved
Example:
run: xsltproc check_wurfl.xsl wurfl.xml
roll out XSLT
Resolve WURFL fallbacks for all values and capabilities defined in roll_out_capabilities.xml.
Check the parameters in the XSLT for more options.
roll_out_into_txt.xsl
Create text (maybe CSV compatible) version of WURFL.
Example:
run: xsltproc roll_out_into_txt.xsl wurfl.xml > wurfl.txt
roll_out_into_xml.xsl
Create a flat WURFL version, with each capability as device attribute SQL.
Example:
run: xsltproc roll_out_into_xml.xsl wurfl.xml > flat_wurfl.xml
roll_out_into_sql.xsl
Create SQL statements for insert WURFL into a SQL database.
If you like, you can also generate the create statement with this script (default).
Example:
run: xsltproc roll_out_into_sql.xsl wurfl.xml > wurfl.sql
remove_elements.xsl
WURFL lists many capabilities and groups. If you don't need each of these elements, you will find this tool really useful.
Create a small XML listing the unwanted groups, run the XSLT and you'll get a new WURFL without the groups and the capabilities that you have selected. This should help you keep WURFL smaller and make your applications faster.
Example:
edit remove_elements.xml
<?xml version="1.0" encoding="UTF-8"?>
<elements>
<groups>
<group>wta</group>
<group>object_download</group>
<group>streaming</group>
<group>wap_push</group>
<group>j2me</group>
<group>mms</group>
<group>sms</group>
<group>sound_format</group>
</groups>
<capabilities>
<capability>tiff</capability>
</capabilities>
</elements>
run: xsltproc --stringparam 'file' "remove_elements.xml" remove_elements.xsl wurfl.xml > clean_wurfl.xml
Some (maybe) outdated stylesheets:
get_capabilities.xsl
Get capabilities without groups from WURFL for selected user agent.
Example:
run: xsltproc --stringparam 'ua' "Nokia3650" get_capabilities.xsl wurfl.xml
convert_wurfl_markups.xsl
Convert the WURLF markups to the 'old' names.
The markup names have changed from wml11 to wml_1_1 standard.
If you don't want to change your application, you can use this XSLT to transform the names into the old format.
Example:
run: xsltproc convert_wurfl_markups.xsl wurfl.xml > wurfl_converted.xml
count_useragents.xsl
Answers your question "how many useragents/capabilities are stored in WURFL?"
Example:
run: xsltproc count_useragents.xsl wurfl.xml
convert_2_html.xsl
Create an HTML page from the WURFL.xml
Example:
run: xsltproc convert_2_html.xsl wurfl.xml > wurfl.html
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9 XSLT 2.0 使用 XPath 2.0 和 XSLT 2.0 节省开发时间并减少代码量
http://www.ibm.com/developerworks/cn/xml/x-xslt20xpath20/
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10 XSLT中模拟 map与 固定次数的循环
<!--将数字转换成字母 以用作选项-->
<xsl:template name='digital2letter'>
<xsl:param name='digit' select='0'/>
<xsl:choose>
<xsl:when test='$digit = 0'>A</xsl:when>
<xsl:when test='$digit = 1'>B</xsl:when>
<xsl:when test='$digit = 2'>C</xsl:when>
<xsl:when test='$digit = 3'>D</xsl:when>
<xsl:when test='$digit = 4'>E</xsl:when>
<xsl:when test='$digit = 5'>F</xsl:when>
<xsl:when test='$digit = 6'>G</xsl:when>
<xsl:otherwise><p>Error Choice</p></xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="AddGeneralChoises">
<xsl:param name="QuestionID"/>
<xsl:param name="level" select="0" /> <!--递归深度-->
<xsl:if test="$level < 6"> <!--固定添加六个选项-->
<xsl:variable name="choiceLetter">
<xsl:call-template name="digital2letter">
<xsl:with-param name="digit" select="$level"/>
</xsl:call-template>
</xsl:variable>
<xsl:element name="input">
<xsl:attribute name="type">radio</xsl:attribute>
<xsl:attribute name="name"><xsl:value-of select="$QuestionID"/></xsl:attribute>
<xsl:attribute name="choice"> <xsl:value-of select="."/> </xsl:attribute>
<xsl:attribute name="onfocus"><xsl:text>blur()</xsl:text></xsl:attribute>
</xsl:element>
<xsl:value-of select="$choiceLetter"/>
<xsl:text> </xsl:text>
<xsl:variable name="levelPlus" select="$level + 1" />
<xsl:call-template name="AddGeneralChoises"> <!--XSLT 1.0不支持固定循环次数的for-each,只能用递归模拟循环-->
<xsl:with-param name="QuestionID" select="$QuestionID"/>
<xsl:with-param name="level" select="$levelPlus"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
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15 xslt 输出方法 outmethod 很重要
标准文档： http://www.w3.org/TR/xslt#section-XML-Output-Method
同样一个<b/> html输出成<b></b> xml输出成<b/>
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16 xslt output method引起的网页显示问题。
环境：Windows XP SP3 + IE 8.0
xslt:
makepaper.xsl: <xsl:output method="xml" encoding="utf-8" omit-xml-declaration="yes" indent="yes"/>
mainbody.html: <html>
问题: <br />输成<br/> IE8对<br/>当成<br>解析，导致<br/>后面的文字都变成黑体。
将<xsl:output method="xml" />改为<xs:output method="html" />
出现新问题，图片不显示，图片链接中的汉字为乱码：
file:///E:/%25E5%25B1%25B1%25E8%25A5%25BF%25E5%2585%2589%25E7%259B%2598/web/data/demo/image/image2.jpeg
file:///E:/光盘/web/data/demo/image/image2.jpeg
最终解决办法：
更改mainbody.html: 为xhtml格式
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
xsl的输出格式为xml，xhtml中能正确解析 <br/>而不是将之当成<br>处理。
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17 处理文本结果的技巧
<xsl:template match="text()">
<xsl:variable name="parentName" select="name(..)" />
<xsl:if test='$parentName != "OOXML"'> <!--过滤OOXML的信息-->
<xsl:copy-of select="."/>
</xsl:if>
</xsl:template>
==================================================================
18 XSLT 判断XML结点的类型 XSLT
<?xml version="1.0"?>
<!--以下代码摘自XSLTSL工程-->
<!--在XSLT中判断XML文档的结点类型 -->
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:doc="http://xsltsl.org/xsl/documentation/1.0"
xmlns:node="http://xsltsl.org/node"
extension-element-prefixes="doc node">
<xsl:template name="node:type">
<xsl:param name="node" select="."/>
<xsl:choose>
<xsl:when test="not($node)"/>
<!--运用了self轴-->
<xsl:when test="$node[1]/self::*"> <!--元素结点-->
<xsl:text>element</xsl:text>
</xsl:when>
<xsl:when test="$node[1]/self::text()"> <!--文本结点-->
<xsl:text>text</xsl:text>
</xsl:when>
<xsl:when test="$node[1]/self::comment()"> <!--注释结点-->
<xsl:text>comment</xsl:text>
</xsl:when>
<xsl:when test="$node[1]/self::processing-instruction()"> <!--处理指令结点-->
<xsl:text>processing instruction</xsl:text>
</xsl:when>
<xsl:when test="not($node[1]/parent::*)"> <!--根结点-->
<xsl:text>root</xsl:text>
</xsl:when>
<!--下面两种类型的判断巧妙运用了集合的概念-->
<xsl:when test="count($node[1] | $node[1]/../namespace::*) = count($node[1]/../namespace::*)">
<xsl:text>namespace</xsl:text>
</xsl:when>
<xsl:when test="count($node[1] | $node[1]/../@*) = count($node[1]/../@*)">
<xsl:text>attribute</xsl:text>
</xsl:when>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
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9 在XSLT载入XML文档，注意XML文件不存在时，为避免在网页报错，需将文件名置空。
<xsl:variable name="propertyDoc" select="document($propertyFile)"/>