PowerShell中操作XML文件问题 [英] PowerShell manipulating XML file issue

问题描述

假设我有以下的XML文件，我想使用PowerShell（版本1.0）来操作XML文件以获取富价值（在此示例中，值我想要得到的是富价值）和咕（在此示例中，值我想要得到的是咕值），任何想法如何实现？

Suppose I have the following XML file, and I want to use PowerShell (version 1.0) to manipulate the XML file to get the value for Foo (in this sample, value I want to get is "Foo Value") and Goo (in this sample, value I want to get is "Goo Value"), any ideas how to implement?

$FooConfig = [xml](get-content .\Foo.exe.config -ErrorAction:stop)

<configuration>
 <appSettings>
    <add key="Foo" value="Foo Value" />
    <add key="Goo" value="Goo Value" />
 </appSettings>
</configuration>

在此先感谢， 乔治

thanks in advance, George

推荐答案

中的XPath API是PowerShell的下很有活力（你的XML是，毕竟只是.NET对象），它往往是最简单的，如果你使用只想值：

The XPath API is very alive under PowerShell (your XML is, after all, just .NET objects), and it can often be the easiest to use if you just want a value:

$appSettingsSection = $fooConfig.configuration.appSettings;
$goo = $appSettingsSection.SelectSingleNode("add[@key='Goo']");
$goo.Value

或者，如果你想枚举添加元素为PowerShell的集合（多一点PowerShell'ish :-)

Or if you want to enumerate the add elements as a PowerShell collection (a bit more PowerShell'ish :-)

$appSettingsSection = $fooConfig.configuration.appSettings.add

将打印

key                                                         value
---                                                         -----
Foo                                                         Foo Value
Goo                                                         Goo Value

当然，可以通过管道将导致额外的命令做任何处理，你喜欢的。

And of course, you can pipe that result to additional commands to do whatever processing you like.

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