使用模板进行 XSLT 转换：删除空的 xmlns=""

Question

如何删除转换中的空 xmlns=""？

下面是结果 XML 中显示的示例。注意空 xmlns.

我正在使用 VisualStudio 2019 16.8.4。

这是我需要转换的来源XML。

<?xml version="1.0" encoding="UTF-8"?>
<wPOREQ payloadID='113084912-000001' timestamp='2020-12-16T14:05:36-06:00' version='3.1'>
  <Header mode='Production'>
    <From>
      <Credential domain='DUNS'>
        <Identity>060480999</Identity>
      </Credential>
    </From>
    <To>
      <Credential domain='DUNS'>
        <Identity>060480999</Identity>
      </Credential>
    </To>
    <Sender>
      <Credential domain='DUNS'>
        <Identity>196488888</Identity>
        <SharedSecret>111</SharedSecret>
      </Credential>
    </Sender>
  </Header>
  <Order deploymentMode='production' rush='N'>
    <PONumber>59test</PONumber>
    <ReferenceNumber>59240249</ReferenceNumber>
    <WCSSCustomerId>0810999</WCSSCustomerId>
    <OrderExtrinsic>
      <Extrinsic name='PONUM'>MM000327999</Extrinsic>
    </OrderExtrinsic>
    <ShipTo>
      <WCSSShipTo>0001</WCSSShipTo>
      <LocationCode/>
      <Name1>SHIP TO THIS</Name1>
      <Name2/>
      <Address1>99 MEDICAL CENTER DRIVE</Address1>
      <Address2>HSC BMRC</Address2>
      <Address3>BK TEST</Address3>
      <City>ANYTOWN</City>
      <State>WV</State>
      <ZipCode>265053409</ZipCode>
      <CountryCode>US</CountryCode>
      <Phone>
        <AreaCode/>
        <PhNumber/>
        <Ext/>
      </Phone>
      <Fax>
        <AreaCode/>
        <PhNumber/>
        <Ext/>
      </Fax>
      <Attention>RM:8707</Attention>
      <Email/>
    </ShipTo>
    <OrderDate>2020-12-16T14:05:36-06:00</OrderDate>
    <DeliverByDate>2021-01-31</DeliverByDate>
    <RequestedShipDate/>
    <RequestedCarrier>UPSS</RequestedCarrier>
    <ShippingMessage>CUST CARRIER ACCT: 021FW0</ShippingMessage>
    <LineItems>
      <LineItem>
        <LineNumber>1</LineNumber>
        <SKU>10037475</SKU>
        <SKUDescription>WVU LETTERHEAD</SKUDescription>
        <Quantity>1000</Quantity>
        <OrderUOM>SH</OrderUOM>
        <UnitPrice currency='USD'>125.50</UnitPrice>
        <NameFromBC/>
        <Phone1FromBC/>
        <EmailFromBC>katharine.belcher</EmailFromBC>
        <DeliverByDate/>
        <RequestedShipDate>2021-01-31</RequestedShipDate>
        <LineMessage>PRINT 1 COPY(S) OF ALL PDF FIL</LineMessage>
        <LineMessage>ES STARTING WITH: 59240249 WVU</LineMessage>
        <SupplierAuxPartId/>
        <LineItemExtrinsic>
          <Extrinsic name='PriceUOM'>M</Extrinsic>
        </LineItemExtrinsic>
      </LineItem>
    </LineItems>
  </Order>
</wPOREQ>

这是我为 XSLT 生成的内容：

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>

  <xsl:template match="/">
    <Envelope xmlns="http://schemas.microsoft.com/dynamics/2011/01/documents/Message">
      <Header>
        <MessageId>
          <!--<xsl:value-of select="Header/MessageId"/>-->
        </MessageId>
        <Action>http://schemas.microsoft.com/dynamics/2008/01/services/SalesOrderService/create</Action>
      </Header>
      <Body>
        <MessageParts xmlns="http://schemas.microsoft.com/dynamics/2011/01/documents/Message">
          <SalesOrder xmlns="http://schemas.microsoft.com/dynamics/2008/01/documents/SalesOrder">
            <SalesTable class="entity">
            <xsl:apply-templates select="wPOREQ/Order"/>
             <xsl:apply-templates select="wPOREQ/Order/ShipTo"/>
            <xsl:apply-templates select="wPOREQ/Order/LineItems/LineItem"/>
            </SalesTable>
          </SalesOrder>
        </MessageParts>
      </Body>
    </Envelope>
  </xsl:template>
  
  <xsl:template match="wPOREQ/Order">
      <CustAccount>
        <xsl:value-of select="WCSSCustomerId"/>
      </CustAccount>
      <CustomerRef>
        <xsl:value-of select="ReferenceNumber"/>
      </CustomerRef>
      <InventLocationId>
        <xsl:value-of select="WCSSCustomerId"/>
      </InventLocationId>
      <InventSiteId>
        <xsl:value-of select="WCSSCustomerId"/>
      </InventSiteId>
      <InvoiceAccount>
        <xsl:value-of select="WCSSCustomerId"/>
      </InvoiceAccount>
      <ProductType>
        <xsl:value-of select="WCSSCustomerId"/>
      </ProductType>
      <PurchOrderFormNum>
        <xsl:value-of select="PONumber"/>
      </PurchOrderFormNum>
      <ReceiptDateRequested>
        <xsl:value-of select="DeliverByDate"/>
      </ReceiptDateRequested>
      <SalesGroup>
        <xsl:value-of select="WCSSCustomerId"/>
      </SalesGroup>
      <SalesPoolId>
        <xsl:value-of select="10" />
      </SalesPoolId>
      <ShipCarrierDeliveryContact>
        <xsl:value-of select="ShipTo/Attention"/>
      </ShipCarrierDeliveryContact>
    </xsl:template>
  <xsl:template match="ShipTo">
    <TableDlvAddr class="entity">
      <City>
        <xsl:value-of select="City"/>
      </City>
      <CountryRegionId>
        <xsl:choose>
          <xsl:when test="CountryCode = 'US'">USA</xsl:when>
          <xsl:otherwise>
            <xsl:value-of select="USA" />
          </xsl:otherwise>
        </xsl:choose>
      </CountryRegionId>
      <LocationName>
        <xsl:value-of select="Name1"/>
      </LocationName>
      <State>
        <xsl:value-of select="State"/>
      </State>
      <Street>
        <xsl:value-of select="concat(Address1,'&#xd;', Address2,'&#xd;', Address3)"/>
      </Street>
      <ZipCode>
        <xsl:value-of select="substring(ZipCode,1,5)"/>
      </ZipCode>
    </TableDlvAddr>
  </xsl:template>
  <xsl:template match="LineItem">
    <SalesLine class="entity">
      <CustomerRef>
                <xsl:value-of select="../../ReferenceNumber"/>
            </CustomerRef>
      <ItemId>
        <xsl:value-of select="SKU"/>
      </ItemId>
      <LineNum>
        <xsl:value-of select="LineNumber"/>
      </LineNum>
      <PurchorderFormNum>
        <xsl:value-of select="../../PONumber"/>
      </PurchorderFormNum>
      <SalesPrice>
        <xsl:value-of select="UnitPrice"/>
      </SalesPrice>
      <SalesQty>
        <xsl:value-of select="Quantity"/>
      </SalesQty>
      <SalesUnit>
        <xsl:value-of select="OrderUOM"/>
      </SalesUnit>      
    </SalesLine>
  </xsl:template>
</xsl:stylesheet>

然而，输出产生：

<?xml version="1.0" encoding="utf-8"?>
<Envelope xmlns="http://schemas.microsoft.com/dynamics/2011/01/documents/Message">
  <Header>
    <MessageId />
    <Action>http://schemas.microsoft.com/dynamics/2008/01/services/SalesOrderService/create</Action>
  </Header>
  <Body>
    <MessageParts>
      <SalesOrder xmlns="http://schemas.microsoft.com/dynamics/2008/01/documents/SalesOrder">
        <SalesTable class="entity">
          <CustAccount xmlns="">0810147</CustAccount>
          <CustomerRef xmlns="">BK012521-01</CustomerRef>
          <InventLocationId xmlns="">0810147</InventLocationId>
          <InventSiteId xmlns="">0810147</InventSiteId>
          <InvoiceAccount xmlns="">0810147</InvoiceAccount>
          <ProductType xmlns="">0810147</ProductType>
          <PurchOrderFormNum xmlns="">595280620001b3</PurchOrderFormNum>
          <ReceiptDateRequested xmlns="">2021-01-31</ReceiptDateRequested>
          <SalesGroup xmlns="">0810147</SalesGroup>
          <SalesPoolId xmlns="">10</SalesPoolId>
          <ShipCarrierDeliveryContact xmlns="">RM:8707,SALLY WEAVER</ShipCarrierDeliveryContact>
          <TableDlvAddr class="entity" xmlns="">
            <City>MORGANTOWN</City>
            <CountryRegionId>USA</CountryRegionId>
            <LocationName>WEST VIRGINIA UNIVERSITY</LocationName>
            <State>WV</State>
            <Street>
              64 MEDICAL CENTER DRIVE
              HSC BMRC
              BK TEST
            </Street>
            <ZipCode>26505</ZipCode>
          </TableDlvAddr>
          <SalesLine class="entity" xmlns="">
            <CustomerRef>BK012521-01</CustomerRef>
            <ItemId>10037475</ItemId>
            <LineNum>1</LineNum>
            <PurchorderFormNum>595280620001b3</PurchorderFormNum>
            <SalesPrice>125.50</SalesPrice>
            <SalesQty>1000</SalesQty>
            <SalesUnit>SH</SalesUnit>
          </SalesLine>
        </SalesTable>
      </SalesOrder>
    </MessageParts>
  </Body>
</Envelope>

期望的输出是这样的：

<?xml version="1.0" encoding="utf-8"?>
<Envelope xmlns="http://schemas.microsoft.com/dynamics/2011/01/documents/Message">
  <Header>
    <MessageId />
    <Action>http://schemas.microsoft.com/dynamics/2008/01/services/SalesOrderService/create</Action>
  </Header>
  <Body>
    <MessageParts>
      <SalesOrder xmlns="http://schemas.microsoft.com/dynamics/2008/01/documents/SalesOrder">
        <SalesTable class="entity">
          <CustAccount>0810147</CustAccount>
          <CustomerRef>59240249</CustomerRef>
          <InventLocationId>0810147</InventLocationId>
          <InventSiteId>0810147</InventSiteId>
          <InvoiceAccount>0810147</InvoiceAccount>
          <ProductType>0810147</ProductType>
          <PurchOrderFormNum>595280620001</PurchOrderFormNum>
          <ReceiptDateRequested>2021-01-31</ReceiptDateRequested>
          <SalesGroup>0810147</SalesGroup>
          <SalesPoolId>10</SalesPoolId>
          <ShipCarrierDeliveryContact>RM:8707</ShipCarrierDeliveryContact>
          <TableDlvAddr class="entity">
            <City>MORGANTOWN</City>
            <CountryRegionId>USA    </CountryRegionId>
            <LocationName>WEST VIRGINIA UNIVERSITY</LocationName>
            <State>WV</State>
            <Street>64 MEDICAL CENTER DRIVE
HSC BMRC
BK TEST</Street>
            <ZipCode>26505</ZipCode>
          </TableDlvAddr>
          <SalesLine class="entity">
            <CustomerRef>59240249</CustomerRef>
            <ItemId>10037475</ItemId>
            <LineNum>1</LineNum>
            <PurchOrderFormNum>595280620001</PurchOrderFormNum>
            <SalesPrice>125.50</SalesPrice>
            <SalesQty>1000</SalesQty>
            <SalesUnit>SH</SalesUnit>
          </SalesLine>
        </SalesTable>
      </SalesOrder>
    </MessageParts>
  </Body>
</Envelope>

Answer 1

在您的样式表中使用名称空间前缀声明那些名称空间，并在您确实希望绑定到名称空间的元素上使用这些名称空间前缀。

那么没有绑定到命名空间的元素将在没有前缀的情况下被序列化，并且不必重新声明命名空间为空:

此样式表：

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
    xmlns:m="http://schemas.microsoft.com/dynamics/2011/01/documents/Message"
    xmlns:so="http://schemas.microsoft.com/dynamics/2008/01/documents/SalesOrder">
    <xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
    
    <xsl:template match="/">
        <m:Envelope>
            <m:Header>
                <m:MessageId>
                    <!--<xsl:value-of select="Header/MessageId"/>-->
                </m:MessageId>
                <m:Action>http://schemas.microsoft.com/dynamics/2008/01/services/SalesOrderService/create</m:Action>
            </m:Header>
            <m:Body>
                <m:MessageParts>
                    <so:SalesOrder>
                        <so:SalesTable class="entity">
                            <xsl:apply-templates select="wPOREQ/Order"/>
                            <xsl:apply-templates select="wPOREQ/Order/ShipTo"/>
                            <xsl:apply-templates select="wPOREQ/Order/LineItems/LineItem"/>
                        </so:SalesTable>
                    </so:SalesOrder>
                </m:MessageParts>
            </m:Body>
        </m:Envelope>
    </xsl:template>
    
    <xsl:template match="wPOREQ/Order">
        <CustAccount>
            <xsl:value-of select="WCSSCustomerId"/>
        </CustAccount>
        <CustomerRef>
            <xsl:value-of select="ReferenceNumber"/>
        </CustomerRef>
        <InventLocationId>
            <xsl:value-of select="WCSSCustomerId"/>
        </InventLocationId>
        <InventSiteId>
            <xsl:value-of select="WCSSCustomerId"/>
        </InventSiteId>
        <InvoiceAccount>
            <xsl:value-of select="WCSSCustomerId"/>
        </InvoiceAccount>
        <ProductType>
            <xsl:value-of select="WCSSCustomerId"/>
        </ProductType>
        <PurchOrderFormNum>
            <xsl:value-of select="PONumber"/>
        </PurchOrderFormNum>
        <ReceiptDateRequested>
            <xsl:value-of select="DeliverByDate"/>
        </ReceiptDateRequested>
        <SalesGroup>
            <xsl:value-of select="WCSSCustomerId"/>
        </SalesGroup>
        <SalesPoolId>
            <xsl:value-of select="10" />
        </SalesPoolId>
        <ShipCarrierDeliveryContact>
            <xsl:value-of select="ShipTo/Attention"/>
        </ShipCarrierDeliveryContact>
    </xsl:template>
    <xsl:template match="ShipTo">
        <TableDlvAddr class="entity">
            <City>
                <xsl:value-of select="City"/>
            </City>
            <CountryRegionId>
                <xsl:choose>
                    <xsl:when test="CountryCode = 'US'">USA</xsl:when>
                    <xsl:otherwise>
                        <xsl:value-of select="USA" />
                    </xsl:otherwise>
                </xsl:choose>
            </CountryRegionId>
            <LocationName>
                <xsl:value-of select="Name1"/>
            </LocationName>
            <State>
                <xsl:value-of select="State"/>
            </State>
            <Street>
                <xsl:value-of select="concat(Address1,'&#xd;', Address2,'&#xd;', Address3)"/>
            </Street>
            <ZipCode>
                <xsl:value-of select="substring(ZipCode,1,5)"/>
            </ZipCode>
        </TableDlvAddr>
    </xsl:template>
    <xsl:template match="LineItem">
        <SalesLine class="entity">
            <CustomerRef>
                <xsl:value-of select="../../ReferenceNumber"/>
            </CustomerRef>
            <ItemId>
                <xsl:value-of select="SKU"/>
            </ItemId>
            <LineNum>
                <xsl:value-of select="LineNumber"/>
            </LineNum>
            <PurchorderFormNum>
                <xsl:value-of select="../../PONumber"/>
            </PurchorderFormNum>
            <SalesPrice>
                <xsl:value-of select="UnitPrice"/>
            </SalesPrice>
            <SalesQty>
                <xsl:value-of select="Quantity"/>
            </SalesQty>
            <SalesUnit>
                <xsl:value-of select="OrderUOM"/>
            </SalesUnit>      
        </SalesLine>
    </xsl:template>
</xsl:stylesheet>

产生这个输出：

<?xml version="1.0" encoding="utf-8"?>
<m:Envelope xmlns:m="http://schemas.microsoft.com/dynamics/2011/01/documents/Message"
            xmlns:so="http://schemas.microsoft.com/dynamics/2008/01/documents/SalesOrder">
   <m:Header>
      <m:MessageId/>
      <m:Action>http://schemas.microsoft.com/dynamics/2008/01/services/SalesOrderService/create</m:Action>
   </m:Header>
   <m:Body>
      <m:MessageParts>
         <so:SalesOrder>
            <so:SalesTable class="entity">
               <CustAccount>0810999</CustAccount>
               <CustomerRef>59240249</CustomerRef>
               <InventLocationId>0810999</InventLocationId>
               <InventSiteId>0810999</InventSiteId>
               <InvoiceAccount>0810999</InvoiceAccount>
               <ProductType>0810999</ProductType>
               <PurchOrderFormNum>59test</PurchOrderFormNum>
               <ReceiptDateRequested>2021-01-31</ReceiptDateRequested>
               <SalesGroup>0810999</SalesGroup>
               <SalesPoolId>10</SalesPoolId>
               <ShipCarrierDeliveryContact>RM:8707</ShipCarrierDeliveryContact>
               <TableDlvAddr class="entity">
                  <City>ANYTOWN</City>
                  <CountryRegionId>USA</CountryRegionId>
                  <LocationName>SHIP TO THIS</LocationName>
                  <State>WV</State>
                  <Street>99 MEDICAL CENTER DRIVE&#xD;HSC BMRC&#xD;BK TEST</Street>
                  <ZipCode>26505</ZipCode>
               </TableDlvAddr>
               <SalesLine class="entity">
                  <CustomerRef>59240249</CustomerRef>
                  <ItemId>10037475</ItemId>
                  <LineNum>1</LineNum>
                  <PurchorderFormNum>59test</PurchorderFormNum>
                  <SalesPrice>125.50</SalesPrice>
                  <SalesQty>1000</SalesQty>
                  <SalesUnit>SH</SalesUnit>
               </SalesLine>
            </so:SalesTable>
         </so:SalesOrder>
      </m:MessageParts>
   </m:Body>
</m:Envelope>

如果您希望将在“无命名空间”中序列化的那些 SalesOrder 后代元素绑定到销售订单命名空间，但仍然没有命名空间前缀，则声明默认命名空间（无命名空间-prefix) 成为销售订单命名空间并保留 Envelope 和 SalesOrder 元素的命名空间的显式声明：

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
    xmlns="http://schemas.microsoft.com/dynamics/2008/01/documents/SalesOrder">
    <xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
    
    <xsl:template match="/">
        <Envelope xmlns="http://schemas.microsoft.com/dynamics/2011/01/documents/Message">
            <Header>
                <MessageId>
                    <!--<xsl:value-of select="Header/MessageId"/>-->
                </MessageId>
                <Action>http://schemas.microsoft.com/dynamics/2008/01/services/SalesOrderService/create</Action>
            </Header>
            <Body>
                <MessageParts>
                    <SalesOrder xmlns="http://schemas.microsoft.com/dynamics/2008/01/documents/SalesOrder">
                        <SalesTable class="entity">
                            <xsl:apply-templates select="wPOREQ/Order"/>
                            <xsl:apply-templates select="wPOREQ/Order/ShipTo"/>
                            <xsl:apply-templates select="wPOREQ/Order/LineItems/LineItem"/>
                        </SalesTable>
                    </SalesOrder>
                </MessageParts>
            </Body>
        </Envelope>
    </xsl:template>
    
    <xsl:template match="wPOREQ/Order">
        <CustAccount>
            <xsl:value-of select="WCSSCustomerId"/>
        </CustAccount>
        <CustomerRef>
            <xsl:value-of select="ReferenceNumber"/>
        </CustomerRef>
        <InventLocationId>
            <xsl:value-of select="WCSSCustomerId"/>
        </InventLocationId>
        <InventSiteId>
            <xsl:value-of select="WCSSCustomerId"/>
        </InventSiteId>
        <InvoiceAccount>
            <xsl:value-of select="WCSSCustomerId"/>
        </InvoiceAccount>
        <ProductType>
            <xsl:value-of select="WCSSCustomerId"/>
        </ProductType>
        <PurchOrderFormNum>
            <xsl:value-of select="PONumber"/>
        </PurchOrderFormNum>
        <ReceiptDateRequested>
            <xsl:value-of select="DeliverByDate"/>
        </ReceiptDateRequested>
        <SalesGroup>
            <xsl:value-of select="WCSSCustomerId"/>
        </SalesGroup>
        <SalesPoolId>
            <xsl:value-of select="10" />
        </SalesPoolId>
        <ShipCarrierDeliveryContact>
            <xsl:value-of select="ShipTo/Attention"/>
        </ShipCarrierDeliveryContact>
    </xsl:template>
    <xsl:template match="ShipTo">
        <TableDlvAddr class="entity">
            <City>
                <xsl:value-of select="City"/>
            </City>
            <CountryRegionId>
                <xsl:choose>
                    <xsl:when test="CountryCode = 'US'">USA</xsl:when>
                    <xsl:otherwise>
                        <xsl:value-of select="USA" />
                    </xsl:otherwise>
                </xsl:choose>
            </CountryRegionId>
            <LocationName>
                <xsl:value-of select="Name1"/>
            </LocationName>
            <State>
                <xsl:value-of select="State"/>
            </State>
            <Street>
                <xsl:value-of select="concat(Address1,'&#xd;', Address2,'&#xd;', Address3)"/>
            </Street>
            <ZipCode>
                <xsl:value-of select="substring(ZipCode,1,5)"/>
            </ZipCode>
        </TableDlvAddr>
    </xsl:template>
    <xsl:template match="LineItem">
        <SalesLine class="entity">
            <CustomerRef>
                <xsl:value-of select="../../ReferenceNumber"/>
            </CustomerRef>
            <ItemId>
                <xsl:value-of select="SKU"/>
            </ItemId>
            <LineNum>
                <xsl:value-of select="LineNumber"/>
            </LineNum>
            <PurchorderFormNum>
                <xsl:value-of select="../../PONumber"/>
            </PurchorderFormNum>
            <SalesPrice>
                <xsl:value-of select="UnitPrice"/>
            </SalesPrice>
            <SalesQty>
                <xsl:value-of select="Quantity"/>
            </SalesQty>
            <SalesUnit>
                <xsl:value-of select="OrderUOM"/>
            </SalesUnit>      
        </SalesLine>
    </xsl:template>
</xsl:stylesheet>

产生此输出：

<?xml version="1.0" encoding="utf-8"?>
<Envelope xmlns="http://schemas.microsoft.com/dynamics/2011/01/documents/Message">
   <Header>
      <MessageId/>
      <Action>http://schemas.microsoft.com/dynamics/2008/01/services/SalesOrderService/create</Action>
   </Header>
   <Body>
      <MessageParts>
         <SalesOrder xmlns="http://schemas.microsoft.com/dynamics/2008/01/documents/SalesOrder">
            <SalesTable class="entity">
               <CustAccount>0810999</CustAccount>
               <CustomerRef>59240249</CustomerRef>
               <InventLocationId>0810999</InventLocationId>
               <InventSiteId>0810999</InventSiteId>
               <InvoiceAccount>0810999</InvoiceAccount>
               <ProductType>0810999</ProductType>
               <PurchOrderFormNum>59test</PurchOrderFormNum>
               <ReceiptDateRequested>2021-01-31</ReceiptDateRequested>
               <SalesGroup>0810999</SalesGroup>
               <SalesPoolId>10</SalesPoolId>
               <ShipCarrierDeliveryContact>RM:8707</ShipCarrierDeliveryContact>
               <TableDlvAddr class="entity">
                  <City>ANYTOWN</City>
                  <CountryRegionId>USA</CountryRegionId>
                  <LocationName>SHIP TO THIS</LocationName>
                  <State>WV</State>
                  <Street>99 MEDICAL CENTER DRIVE&#xD;HSC BMRC&#xD;BK TEST</Street>
                  <ZipCode>26505</ZipCode>
               </TableDlvAddr>
               <SalesLine class="entity">
                  <CustomerRef>59240249</CustomerRef>
                  <ItemId>10037475</ItemId>
                  <LineNum>1</LineNum>
                  <PurchorderFormNum>59test</PurchorderFormNum>
                  <SalesPrice>125.50</SalesPrice>
                  <SalesQty>1000</SalesQty>
                  <SalesUnit>SH</SalesUnit>
               </SalesLine>
            </SalesTable>
         </SalesOrder>
      </MessageParts>
   </Body>
</Envelope>

使用模板进行 XSLT 转换：删除空的 xmlns=""

XSLT transform with templates: remove empty xmlns=""

xslt

xml-namespaces