我正在尝试在根节点下添加子节点..我尝试使用以下xml,但这不起作用。我是Ruby和Nokogiri的新手
builder = Nokogiri::XML::Builder.with(@doc) do |xml|
nodes = Nokogiri::XML::NodeSet.new(@doc, [])
[].each {|nodes_one_by_one|
<< nodes_one_by_one.Book
<< nodes_one_by_one.Pen
}
end
我需要在根节点下添加节点,如
<Catalog>
<Book>abc</Book>
<Book_Author>Benjamin</Book_author>
这对我有用..但我真正需要的是在文档中的特定位置之后添加这些节点。
<Catalog>
<!--
<Book>abc</Book>
<Book_Author>Benjamin</Book_author>
-->
<Interface></Interface>
<Dialog></Dialog>
<Manifest></Manifest>
</Catalog>
我尝试使用at_xpath('// Catlog'),但它在元素的末尾添加(如你所说)
<Catalog>
<Interface></Interface>
<Dialog></Dialog>
<Manifest></Manifest>
<!--
<Book>abc</Book>
<Book_Author>Benjamin</Book_author>
-->
book = Nokogiri::XML::Node.new('book', doc)
pen = Nokogiri::XML::Node.new('pen', doc)
.
.
无论如何使用“each”循环而不是逐个添加..我试过这种方式,但这不起作用。
builder = Nokogiri :: XML :: Builder.with(doc)do | xml |
nodes = Nokogiri :: XML :: Node.new(doc,[])
[] .each {| child_list_element |
child_list_element.Book“value” child_list_element.Pen“value” child_list_element.Diary“value” child_list_element.Pen_stand“value” child_list_element.Pencil“value” 。 。 。
}
结束
doc&lt;&lt;节点
代码可能有误,但我想这样做。还有一个就是..我可以将所有元素添加为NodeSet而不是Node。请更正我的代码。
提前致谢
嵌套的OpenStruct似乎没有正常工作。我尝试了下面的例子
require 'ostruct'
require 'nokogiri'
collection = [
OpenStruct.new(:catalogStoreNumber => '657758',
:catalogStoreId => 'CTH6536',
:catalogStoreLocation => 'UnitedStates',
:catalogOwnerId => 'TYCT11190',
:catalogOwner => 'McGrawHill Pub.',
:catalogList => OpenStruct.new(
:catalogProductInfo => OpenStruct.new(
:productType => 'Book',
:productName => 'The Client',
:productId => 'CRSUS113246A',
:productCategory => 'Crime And Suspense',
:productSubcategory => 'Vintage Books',
:productPrice => '45.50 USD',
:productAuthor => OpenStruct.new(
:authorFirstName =>'John Grisham',
:authorMiddleName=> 'Willburt',
:authorContact => '19876648981')),
:catalogProductInfo => OpenStruct.new(
:productType => 'Pen',
:productName => 'Reynolds',
:productId => 'PRREY546647',
:productCategory => 'Misc. Stationary',
:productSubcategory => 'Stationery Items',
:productPrice => '3.00 USD',
:productManufacturer => 'Reynolds Inc.',
:productAuthor => OpenStruct.new(
:authorFirstName => 'Ryan Reynolds',
:authorMiddleName => 'William',
:authorContact => '16577589898')),
:catalogListType => 'ProductCollection',
:catalogListSource => 'Web'
),
:catalogVerificaitionLog => OpenStruct.new(
:catalogVerificationStatus => 'Verified',
:catalogVerificationDateTime => '2012-03-12T13:00:15+5:30',
:catalogVerificationId => '64774A',
:catalogVerificationRequestedBy => 'user_121')
)]
我想访问第一个“catalogProductInfo”的“productType”,我说“collection.catalogList.catalogProductInfo.productType.content” 我得到以下错误
#(NoMethodError)的未定义方法`productType'
OpenStruct是否支持嵌套OpenStruct我想使用OpenStruct和Nokogiri以下面的格式构建XML?
<CatalogOrder>
<CatalogStoreNumber>657758</CatalogStoreNumber>
<CatalogStoreId>CTH6536</CatalogStoreId>
<CatalogStoreLocation>UnitedStates</CatalogStoreLocation>
<CatalogOwnerId>TYCT11190</CatalogOwnerId>
<CatalogOwner>McGrawHill Pub.</CatalogOwner>
<CatalogList>
<CatalogProductInfo>
<ProductType>Book</ProductType>
<ProductName>The Client</ProductName>
<ProductId>CRSUS113246A</ProductId>
<ProductCategory>Crime And Suspense</ProductCategory>
<ProductSubCategory>Vintage Books</ProductSubCategory>
<ProductPrice>45.50 USD</ProductPrice>
<ProductAuthor>
<AuthorFirstName>John Grisham</AuthorFirstName>
<AuthorMiddleName>Willbur</AuthorMiddleName>
<AuthorContact>19876648981</AuthorContact>
</ProductAuthor>
</CatalogProductInfo>
<CatalogProductInfo>
<ProductType>Pen</ProductType>
<ProductName>Reynolds</ProductName>
<ProductId>PRREY546647</ProductId>
<ProductCategory>Misc. Stationary</ProductCategory>
<ProductSubCategory>Stationary Items</ProductSubCategory>
<ProductPrice>3.00 USD</ProductPrice>
<ProductAuthor>
<AuthorFirstName>Ryan Reynolds</AuthorFirstName>
<AuthorMiddleName>William</AuthorMiddleName>
<AuthorContact>16577589898</AuthorContact>
</ProductAuthor>
</CatalogProductInfo>
<CatalogListType>ProductCollection</CatalogListType>
<CatalogListSource>Web</CatalogListSource>
</CatalogList>
<CatalogVerificationLog>
<CatalogVerificationStatus>Verified</CatalogVerificationStatus>
<CatalogVerificationDateTime>2012-03-12T13:00:15+5:30</CatalogVerificationDateTime>
<CatalogVerificationId>64774A</CatalogVerificationId>
<CatalogVerificationRequestedBy>User_121</CatalogVerificationRequestedBy>
</CatalogVerificationLog>
我想使用Nokogiri和OpenStruct实现这一点,但我不确定OpenStruct是否可行,因为它缺乏嵌套功能。有没有其他方法可以使用JSon实现这一点而没有任何明显的限制?请更正我之前的代码。
答案 0 :(得分:10)
如果我理解正确的话,以下内容大致应该是您要找的:
doc = Nokogiri::XML(original_xml_string)
catalog = doc.at_css('Catalog') # #at_css will just grab the first node.
# use #css if you want to loop through several.
# alternatively just use doc.root
book = Nokogiri::XML::Node.new('Book', doc)
book_author = Nokogiri::XML::Node.new('Book_Author', doc)
book.content = 'abc'
book_author.content = 'benjamin'
catalog << book
catalog << book_author
<<
应该在元素结尾之前附加节点。
更新后的问题并简化了@ Phrogz的建议,这应符合您的要求:
require 'nokogiri'
xml = <<'XML'
<Catalog>
<Interface></Interface>
<Dialog></Dialog>
<Manifest></Manifest>
</Catalog>
XML
doc = Nokogiri::XML(xml)
catalog = doc.root
catalog.first_element_child.before("<Book_Author>abc</Book_Author>")
catalog.first_element_child.before("<Book>benjamin</Book>")
puts doc.to_xml
要迭代集合,动态添加节点,并使用NodeSet,请尝试以下操作:
require 'nokogiri'
require 'ostruct'
xml = <<-'XML'
<Catalog>
<Interface></Interface>
<Dialog></Dialog>
<Manifest></Manifest>
</Catalog>
XML
collection = [
OpenStruct.new(book: '1984', pen: 'George Orwell'),
OpenStruct.new(book: 'Thinking, Fash and Slow', pen: 'Daniel Kahneman')
]
doc = Nokogiri::XML(xml)
catalog = doc.root
node_set = Nokogiri::XML::NodeSet.new(doc)
collection.each do |object|
book = Nokogiri::XML::Node.new('Book', doc)
book_author = Nokogiri::XML::Node.new('Book_Author', doc)
book.content = object.book
book_author.content = object.pen
node_set << book
node_set << book_author
end
catalog.first_element_child.before(node_set)
puts doc.to_xml