为什么不能用xidel提取数据?
Why can't extract data with xidel?
显示books.xml
中的内容。
cat books.xml
<?xml version="1.0" encoding="UTF-8"?>
<books>
<book category="JAVA">
<title lang="en">Learn Java in 24 Hours</title>
<author>Robert</author>
<year>2005</year>
<price>32.00</price>
</book>
<book category="XML">
<title lang="en">Learn XPath in 24 hours</title>
<author>Jay Ban</author>
<year>2010</year>
<price>16.50</price>
</book>
</books>
xquery 字符串:
xstring='''
for $x in doc("books.xml")/books/book
where $x/price>30
return $x/title'''
为什么用xidel提取不到价格大于30的书名?
where $x/price>30
和where $x/price/text)>30
都不能生效
假设您的 xml 存储在 file.xml 中,这应该有效:
xidel file.xml --xquery 'for $x in //book where $x/price/text() gt 30 return $x/title
'
我的输出:
Learn Java in 24 Hours
xquery='''
for $x in doc("books.xml")/books/book
where $x/price/text() >30
return $x/title'''
bash命令:
xidel books.xml --xquery "$xquery"
显示books.xml
中的内容。
cat books.xml
<?xml version="1.0" encoding="UTF-8"?>
<books>
<book category="JAVA">
<title lang="en">Learn Java in 24 Hours</title>
<author>Robert</author>
<year>2005</year>
<price>32.00</price>
</book>
<book category="XML">
<title lang="en">Learn XPath in 24 hours</title>
<author>Jay Ban</author>
<year>2010</year>
<price>16.50</price>
</book>
</books>
xquery 字符串:
xstring='''
for $x in doc("books.xml")/books/book
where $x/price>30
return $x/title'''
为什么用xidel提取不到价格大于30的书名?
where $x/price>30
和where $x/price/text)>30
都不能生效
假设您的 xml 存储在 file.xml 中,这应该有效:
xidel file.xml --xquery 'for $x in //book where $x/price/text() gt 30 return $x/title
'
我的输出:
Learn Java in 24 Hours
xquery='''
for $x in doc("books.xml")/books/book
where $x/price/text() >30
return $x/title'''
bash命令:
xidel books.xml --xquery "$xquery"