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假设我有一个简单的 XML 文档，如下所示：

<a>
  <b>
   <c>blah</c>
   <c>blah</c>
   <d>blargh</d>
  </b>
</a>

我想选择“c”元素。

这是我认为应该起作用的：

Select-Xml -Xml $XmlDoc -XPath '//c';

尽管此示例本身有效，但此类似概念并未在此 XML 文档中返回任何内容：

<?xml version="1.0" encoding="utf-8"?>
<Response xmlns="http://schemas.microsoft.com/search/local/ws/rest/v1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Copyright>Copyright © 2012 Microsoft and its suppliers. All rights reserved. This API cannot be accessed and the content and any results may not be used, reproduced or transmitted in any manner without express written permission from Microsoft Corporation.</Copyright>
  <BrandLogoUri>http://dev.virtualearth.net/Branding/logo_powered_by.png</BrandLogoUri>
  <StatusCode>200</StatusCode>
  <StatusDescription>OK</StatusDescription>
  <AuthenticationResultCode>ValidCredentials</AuthenticationResultCode>
  <TraceId>985236ecd4b04793ac26f72a218a3876|LAXM001505|02.00.127.100|</TraceId>
  <ResourceSets>
    <ResourceSet>
      <EstimatedTotal>1</EstimatedTotal>
      <Resources>
        <TrafficIncident>
          <Point>
            <Latitude>41.82048</Latitude>
            <Longitude>-88.20378</Longitude>
          </Point>
          <IncidentId>1</IncidentId>
          <LastModifiedUTC>2012-05-01T16:17:15.663Z</LastModifiedUTC>
          <StartTimeUTC>2011-05-01T19:46:00Z</StartTimeUTC>
          <EndTimeUTC>2012-11-11T14:00:00Z</EndTimeUTC>
          <Type>Construction</Type>
          <Severity>Minor</Severity>
          <Verified>true</Verified>
          <RoadClosed>false</RoadClosed>
          <Description>description here</Description>
          <DetourInfo />
          <LaneInfo>lane blockages possible</LaneInfo>
          <CongestionInfo />
        </TrafficIncident>
      </Resources>
    </ResourceSet>
  </ResourceSets>
</Response>

有谁知道选择TrafficIncident元素的正确语法而不必指定完整路径？

4

1 回答 1

1

这些元素位于命名空间中，因此您需要在该命名空间中搜索它们。谷歌搜索“XPath 默认命名空间”，它是第 1 位常见问题解答。

于 2012-05-08T16:57:06.907 回答