regex - regex - 查找与另一个标记值一起出现的 XML 标记

Question

假设我有 XML： <Customer><CustomerType>Business</CustomerType><CreditRating>Good</CreditRating></Customer> <Customer><CustomerType>Residential</CustomerType><CreditRating>Good</CreditRating></Customer>

我想将住宅消费者的所有信用评级从好更改为坏。

仅当发生在具有住宅客户类型的客户记录中时，我可以使用什么正则表达式搜索词来查找（并因此替换）CreditRating 标签？

我知道我可以使用： <Customer>.*?<CustomerType>Residential.*?</Customer>匹配整个记录住宅客户记录，但我只想匹配客户记录中的 CreditRating 标签，以便进行搜索和替换。

非常感谢，

:-)

Answer 1

这在 XSLT 中很容易（而且安全）...

XML 输入（包装<Customers>成格式良好）

<Customers>
    <Customer>
        <CustomerType>Business</CustomerType>
        <CreditRating>Good</CreditRating>
    </Customer>
    <Customer>
        <CustomerType>Residential</CustomerType>
        <CreditRating>Good</CreditRating>
    </Customer>
</Customers>

XSLT 1.0

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output indent="yes"/>
    <xsl:strip-space elements="*"/>

    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>

    <xsl:template match="Customer[CustomerType='Residential']/CreditRating">
        <CreditRating>Bad</CreditRating>
    </xsl:template>

</xsl:stylesheet>

输出 XML

<Customers>
   <Customer>
      <CustomerType>Business</CustomerType>
      <CreditRating>Good</CreditRating>
   </Customer>
   <Customer>
      <CustomerType>Residential</CustomerType>
      <CreditRating>Bad</CreditRating>
   </Customer>
</Customers>