英文:
Groovy XML to CSV with deep XML structure
问题
我需要一个Groovy脚本，将XML结构转换为CSV文件，不包括头部行。
XML的结构如下：
<stock>
<field1>Header</field1>
<field2>H1</field2>
<positions>
<data1>Hello</data1>
<data2>P1</data2>
</positions>
<positions>
<data1>World</data1>
<data2>P2</data2>
</positions>
</stock>
<stock>
<field1>Header</field1>
<field2>H2</field2>
<positions>
<data1>Hello</data1>
<data2>P3</data2>
</positions>
<positions>
<data1>World</data1>
<data2>P4</data2>
</positions>
</stock>
你尝试的代码似乎没有达到你的需求。CSV应该如下所示：
Header|H1
Hello|P1
World|P2
Header|H2
Hello|P3
World|P4
欢迎任何帮助。谢谢。
英文:
I need a groovy script that is transforming a XML structure into a CSV File without a header line.
XML lookes like this:
<stock>
<field1>Header</field1>
<field2>H1</field2>
<positions>
<data1>Hello</data1>
<data2>P1</data2>
</positions>
<positions>
<data1>World</data1>
<data2>P2</data2>
</positions>
</stock>
<stock>
<field1>Header</field1>
<field2>H2</field2>
<positions>
<data1>Hello</data1>
<data2>P3</data2>
</positions>
<positions>
<data1>World</data1>
<data2>P4</data2>
</positions>
</stock>
I tried this but it is not doing what i need to have.
//parse input
def parsedXml = new XmlParser().parseText(ins)
def content = new XmlSlurper().parseText(ins)
def csv = content.stock.positions.inject(header){ result, row ->
[result, row.children().collect().join('|')].join("\n")
CSV should look like this
Header|H1
Hello|P1
World|P2
Header|H2
Hello|P3
World|P4
any help is appreciated. thanks
答案1
得分: 0
这不是特别高效，因为它将所有内容读入内存，但这会起作用：
String xmlString = "<stocks><stock> <field1>Header</field1> <field2>H1</field2> <positions> <data1>Hello</data1> <data2>P1</data2> </positions> <positions> <data1>World</data1> <data2>P2</data2> </positions> </stock> <stock> <field1>Header</field1> <field2>H2</field2> <positions> <data1>Hello</data1> <data2>P3</data2> </positions> <positions> <data1>World</data1> <data2>P4</data2> </positions> </stock></stocks>";
def xml = new XmlSlurper().parseText( xmlString )
List<List<String>> output = []
xml.stock.each { stock ->
output << [stock.field1.text(),stock.field2.text()]
stock.positions.each { position ->
output << [ position.data1.text(), position.data2.text() ]
}
}
println( output.collect { it.join("|") }.join("\n") )
英文:
It's not super efficient because it reads everything into memory, but this will work:
String xmlString = """<stocks><stock> <field1>Header</field1> <field2>H1</field2> <positions> <data1>Hello</data1> <data2>P1</data2> </positions> <positions> <data1>World</data1> <data2>P2</data2> </positions> </stock> <stock> <field1>Header</field1> <field2>H2</field2> <positions> <data1>Hello</data1> <data2>P3</data2> </positions> <positions> <data1>World</data1> <data2>P4</data2> </positions> </stock></stocks>"""
def xml = new XmlSlurper().parseText( xmlString )
List<List<String>> output = []
xml.stock.each { stock ->
output << [stock.field1.text(),stock.field2.text()]
stock.positions.each { position ->
output << [ position.data1.text(), position.data2.text() ]
}
}
println( output.collect { it.join("|") }.join("\n") )
答案2
得分: 0
以下是代码的中文翻译：
你可以遍历XML树并收集具有匹配名称的节点：
def ins = '''
<root>
<stock>
<field1>Header</field1>
<field2>H1</field2>
<positions>
<data1>Hello</data1>
<data2>P1</data2>
</positions>
<positions>
<data1>World</data1>
<data2>P2</data2>
</positions>
</stock>
<stock>
<field1>Header</field1>
<field2>H2</field2>
<positions>
<data1>Hello</data1>
<data2>P3</data2>
</positions>
<positions>
<data1>World</data1>
<data2>P4</data2>
</positions>
</stock>
</root>
'''
def content = new XmlSlurper().parseText(ins)
def csv = content.depthFirst()
.findAll { it.name().matches(/(field|data).*/) }
.collect{ it.text() }.collate(2)
.collect { it.join("|") }.join("\n")
或者，如果你需要一种相对通用的方法，可以扩展字段和数据标签的数量：
def csv = content.depthFirst()
.findAll { it.name() in ["stock", "positions"] }
.collect { node -> node.children()
.findAll{ it.name() != "positions" }
.collect{ it.text() } }
.collect { it.join("|") }.join("\n")
注意：这些是给定代码片段的中文翻译，不包括代码的执行或其他信息。
英文:
You could traverse the xml-tree and collect the nodes with matching names:
def ins = '''
<root>
<stock>
<field1>Header</field1>
<field2>H1</field2>
<positions>
<data1>Hello</data1>
<data2>P1</data2>
</positions>
<positions>
<data1>World</data1>
<data2>P2</data2>
</positions>
</stock>
<stock>
<field1>Header</field1>
<field2>H2</field2>
<positions>
<data1>Hello</data1>
<data2>P3</data2>
</positions>
<positions>
<data1>World</data1>
<data2>P4</data2>
</positions>
</stock>
</root>
'''
def content = new XmlSlurper().parseText(ins)
def csv = content.depthFirst()
.findAll { it.name().matches(/(field|data).*/) }
.collect{ it.text() }.collate(2)
.collect { it.join("|") }.join("\n")
Or if you need a somewhat generic approach where you can extend the number of field and data tags:
def csv = content.depthFirst()
.findAll { it.name() in ["stock", "positions"] }
.collect { node -> node.children()
.findAll{ it.name() != "positions" }
.collect{ it.text() } }
.collect { it.join("|") }.join("\n")
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