2

我想将示例 XML 中的重复组转换为两个分隔的文本行。这是我当前的代码版本:

string orderXml = 
@"<?xml version='1.0' encoding='utf-8'?>
<Order id='79223510'>
<Status>new</Status>
<ShipMethod>Standard International</ShipMethod>
<ToCity>Tokyo</ToCity>
<Items>
    <Item>
    <SKU>SKU-1234567890</SKU>
    <Quantity>1</Quantity>
    <Price>99.95</Price>
    </Item>
    <Item>
    <SKU>SKU-1234567899</SKU>
    <Quantity>1</Quantity>
    <Price>199.95</Price>
    </Item>
</Items>
</Order>";

StringReader str = new StringReader(orderXml);

var xslt = new XmlTextReader(new StringReader(
@"<?xml version='1.0' encoding='UTF-8'?>" +
"<xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>" +

"<xsl:output method='text' indent='no'/>" +

"<!-- New line character variable -->" +
"<xsl:variable name='newline'>" +
"<xsl:text>&#13;&#10;</xsl:text>" +
"</xsl:variable>" +
"<xsl:variable name='empty'>" +
"<xsl:text></xsl:text>" +
"</xsl:variable>" +

"<xsl:template match='/'>" +         

"<xsl:for-each select='Order'>" +
"<xsl:value-of select='@id'/>|" + 
"<xsl:value-of select='Status'/>|" +
"<xsl:value-of select='ShipMetod'/>|" +
"<xsl:value-of select='ToCity'/>|" + 
"<xsl:value-of select='$newline'/>" +
"</xsl:for-each>" +

"<xsl:for-each select='Order/Items/Item'>" +
"<xsl:value-of select='SKU'/>|" +          
"<xsl:value-of select='Quantity'/>|" +   
"<xsl:value-of select='Price'/>|" +    
"<xsl:value-of select='$newline'/>" +
"</xsl:for-each>" + 

"</xsl:template>" +
"</xsl:stylesheet>"
                ));

var xDoc = new XPathDocument(str);
var xTr = new System.Xml.Xsl.XslCompiledTransform();
xTr.Load(xslt);

StringBuilder sb = new StringBuilder();
StringWriter writer = new StringWriter(sb);
xTr.Transform(xDoc, null, writer);

string[] lines = sb.ToString().Split(new string[] {"\n"}, StringSplitOptions.RemoveEmptyEntries);    

lines.ToList().ForEach(System.Console.Write);     

此代码当前产生以下输出:

79223510|new||Tokyo|
SKU-1234567890|1|99.95|
SKU-1234567899|1|199.95|

我希望它产生以下内容:

79223510|new||Tokyo|SKU-1234567890|1|99.95|
79223510|new||Tokyo|SKU-1234567899|1|199.95|

只需使用 XSL 转换。请指教。

PS 以文本形式添加了 XSL 以便于阅读:

@<?xml version='1.0' encoding='UTF-8'?>
<xsl:stylesheet version='1.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:output method='text' indent='no'/>

<!-- New line character variable -->
<xsl:variable name='newline'>
<xsl:text>&#13;&#10;</xsl:text>
</xsl:variable>
<xsl:variable name='empty'>
<xsl:text></xsl:text>
</xsl:variable>

<xsl:template match='/'>         

<xsl:for-each select='Order'>
<xsl:value-of select='@id'/>| 
<xsl:value-of select='Status'/>|
<xsl:value-of select='ShipMetod'/>|
<xsl:value-of select='ToCity'/>| 
<xsl:value-of select='$newline'/>
</xsl:for-each>

<xsl:for-each select='Order/Items/Item'>
<xsl:value-of select='SKU'/>|          
<xsl:value-of select='Quantity'/>|   
<xsl:value-of select='Price'/>|    
<xsl:value-of select='$newline'/>
</xsl:for-each> 

</xsl:template>
</xsl:stylesheet>
4

1 回答 1

2

你犯了几个错误:

  1. 您正在使用两个单独的 for-each 循环而不是循环中的循环,因此您的第一行输出来自Order元素,接下来的两行来自Item元素。(实际上你不需要任何循环。下面的解决方案。)
  2. 您拼写错误ShipMetod,因此您的某个字段错误地为空白。
  3. 您没有任何方法可以转义|字段值中可能存在的任何值。(我的解决方案不能解决这个问题,因为我不确定你想怎么做。)

更好的解决方案是使用模板匹配和字符串连接。

<xsl:stylesheet version="1.0" xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>
<xsl:output method="text" indent="no" media-type="text/plain" />

<xsl:variable name='newline'><xsl:text>&#13;&#10;</xsl:text></xsl:variable>
<xsl:variable name='delimiter'>|</xsl:variable>

<!-- by default, don't copy any nodes to output -->
<xsl:template match="node()|@*"><xsl:apply-templates select="node()|@*"/></xsl:template>

<xsl:template match="/Order/Items/Item"><xsl:value-of
select="concat(
../../@id, $delimiter,
../../Status, $delimiter,
../../ShipMethod, $delimiter,
../../ToCity, $delimiter,
SKU, $delimiter,
Quantity, $delimiter,
Price, $delimiter,
$newline)"/></xsl:template>

</xsl:stylesheet>

这会产生以下输出:

79223510|new|Standard International|Tokyo|SKU-1234567890|1|99.95|
79223510|new|Standard International|Tokyo|SKU-1234567890|1|199.95|
于 2012-06-29T21:50:16.277 回答