关于xsl:exclude-result-prefixes的几点疑问

[iyiduhsoad]

按照介绍：这是一个名称空间列表，在此中以空格分开的
名称空间前缀将不再在结果树中输出。
如我一个简单的例子
<?xml version="1.0"?>
<xsl:stylesheet
xsl:exclude-result-prefixes="ss"
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:style="http://style"
xmlns:ss="http://ss"
xmlns="ssss">
<xsl:template match="/">
<foo1 xsl:exclude-result-prefixes="style ss #default" ss:hl="ss"/>
</xsl:template>
</xsl:stylesheet>

结果集是：
<foo1 xmlns="ssss" xmlns:ss="http://ss" ss:hl="ss"/>
明显的是foo1中的"style ss #default"其中的style,ss都起作用了。
而xmlns="ssss"依然存在,
即#default没起作用，为什么呢？？
另一点：
可以在xsl:stylesheet中使用xsl:exclude-result-prefixes,
但有什么用呢?在何时起作用呢？？

那位能提供解释的实例，或进行探讨。
btw:不要纯英文呀，我看了
http://www.w3.org/TR/xslt#literal-result-element
半天不是很清楚，而且它好像解释的也不是很清楚。。

[iyiduhsoad]

maybe i made the wrong result-set
let's look at this example:

xslt:

<?xml version="1.0"?>
<xsl:stylesheet
exclude-result-prefixes="aa bb"
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:aa="http://aa"
xmlns:bb="http://bb">
<xsl:template match="/">
<aa:foo1 bb:hl="ss"/>
</xsl:template>
</xsl:stylesheet>

result-set:

<?xml version="1.0" encoding="UTF-8"?><aa:foo1 xmlns:aa="http://aa" bb:hl="ss"/>

you see,namespace aa is still here,but bb disappears.
can you explain it??



about the second question,thanks you,i found my wrong.
it should be "exclude-result-prefixes" not "xsl:exclude-result-prefixes"
in the <xsl:stylesheet>

[iyiduhsoad]

first:
yes,you are right.i can't remove "ssss",because fool.
but why i can remove "ss"?--h1 belongs to "ss" too.
that's the difference between element and attribute?
maybe because the namespace of the element influences
the descendant,so it must be declared?
can you explain it?



second:
i can't understand,can you give me an example?


thanks.

[saucer]

>>>>but why i can remove "ss"?

are you kidding? this is your output:
<foo1 xmlns="ssss" xmlns:ss="http://ss" ss:hl="ss"/>

"ss" is still there

see
Namespaces and XSLT Stylesheets
http://www.xml.com/pub/a/2001/04/04/trxml/

[saucer]

>>>>but why i can remove "ss"?

are you kidding? this is your output:
<foo1 xmlns="ssss" xmlns:ss="http://ss" ss:hl="ss"/>

"ss" is still there

see
Namespaces and XSLT Stylesheets
http://www.xml.com/pub/a/2001/04/04/trxml/

[saucer]

>>>>即#default没起作用，为什么呢？？

because when you use xmlns="ssss", "foo1" belongs to the "ssss" namespace:

<xsl:stylesheet xmlns="ssss">
<xsl:template match="/">
<foo1 ....>

if XSLT removes "ssss", where should "foo1" go?

>>>>可以在xsl:stylesheet中使用xsl:exclude-result-prefixes,

it is used to remove unnecessary namespace

[iyiduhsoad]

saucer再帮看一下，
如果不是很确认，我也可以结帖了，以后再说。。

[saucer]

not possible, something is wrong with your XSLT processor, on .NET, I got this back:


<aa:foo1 bb:hl="ss" xmlns:bb="http://bb" xmlns:aa="http://aa" />

[iyiduhsoad]

我用的是xmlspy,结果确实如此，奇怪，
莫非因为我用的是 D版.....?
^_^ ^_^