在 Groovy 中加载、修改和编写 XML 文档
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/2245641/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Load, modify, and write an XML document in Groovy
提问by Mike Sickler
I have an XML document that I want to load from a file, modify a few specific elements, and then write back to disk.
我有一个 XML 文档，我想从文件中加载它，修改一些特定的元素，然后写回磁盘。
I can't find any examples of how to do this in Groovy.
我在 Groovy 中找不到任何有关如何执行此操作的示例。
回答by John Wagenleitner
You can just modify the node's valueproperty to modify the values of elements.
您可以只修改节点的value属性来修改元素的值。
/* input:
<root>
<foo>
<bar id="test">
test
</bar>
<baz id="test">
test
</baz>
</foo>
</root>
*/
def xmlFile = "/tmp/test.xml"
def xml = new XmlParser().parse(xmlFile)
xml.foo[0].each {
it.@id = "test2"
it.value = "test2"
}
new XmlNodePrinter(new PrintWriter(new FileWriter(xmlFile))).print(xml)
/* output:
<root>
<foo>
<bar id="test2">
test2
</bar>
<baz id="test2">
test2
</baz>
</foo>
</root>
*/
回答by Heinrich Filter
If you want to use the XmlSlurper:
如果你想使用XmlSlurper：
//Open file
def xml = new XmlSlurper().parse('/tmp/file.xml')
//Edit File e.g. append an element called foo with attribute bar
xml.appendNode {
foo(bar: "bar value")
}
//Save File
def writer = new FileWriter('/tmp/file.xml')
//Option 1: Write XML all on one line
def builder = new StreamingMarkupBuilder()
writer << builder.bind {
mkp.yield xml
}
//Option 2: Pretty print XML
XmlUtil.serialize(xml, writer)
Note:
XmlUtilcan also be used with the XmlParseras used in @John Wagenleitner's example.
注意：
XmlUtil也可以与XmlParser@John Wagenleitner 示例中使用的一样使用。
References:
参考：
回答by Dónal
There's a pretty exhaustive set of examples for reading/writing XML using Groovy here. Regarding the loading/saving the data to/from a file, the various methods/properties that Groovy adds to java.io.File, should provide the functionality you need. Examples include:
有读取/使用Groovy编写XML一个漂亮的一套详尽的例子在这里。关于向/从文件加载/保存数据，Groovy 添加到的各种方法/属性java.io.File应该提供您需要的功能。例子包括：
File.write(text)
File.text
File.withWriter(Closure closure)
See herefor a complete list of these methods/properties.
有关这些方法/属性的完整列表，请参见此处。
回答by Afrig Aminuddin
For the one who find the output empty, here is the solution:
对于发现输出为空的人，这是解决方案：
def xml = file("${projectDir}/src/main/AndroidManifest.xml")
def manifest = new XmlSlurper().parse(file(xml))
manifest.@package = "com.newapp.id"
xml.withWriter {out->
XmlUtil.serialize(manifest, out)
}
