使用XSLT重命名根元素并消除空值

时间：2016-03-21 05:15:20

标签： xml xslt xslt-1.0 xslt-2.0

我必须转换以下xml输入，

<Standards xmlns="http://ws.wso2.org/dataservice">
        <Standard>
            <ProductID>200057</ProductID>
            <Prefix>ISO</Prefix>
            <SNumber>1001</SNumber>
            <DraftProducts>
                <RelatedProduct>
                    <ProductID>1500163</ProductID>
                </RelatedProduct>
            </DraftProducts>
            <ReferenceProducts>
                <RelatedProduct>
                    <ProductID>263973</ProductID>
                    <RelationId>708519</RelationId>
                    <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                </RelatedProduct>
                <RelatedProduct>
                    <ProductID>320056</ProductID>
                    <RelationId>934789</RelationId>
                    <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                </RelatedProduct>
            </ReferenceProducts>
            <RelatedIntProducts>
                <RelatedProduct>
                    <ProductID xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                    <RelationId>116881</RelationId>
                    <Relationship>Identical</Relationship>
                    <Designation>NEN ISO 1001</Designation>
                </RelatedProduct>
                <RelatedProduct>
                    <ProductID>208076</ProductID>
                    <RelationId>116886</RelationId>
                    <Relationship>Identical</Relationship>
                    <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                </RelatedProduct>
            </RelatedIntProducts>
            <S1>1001</S1>
            <S2>1986</S2>
        </Standard>
        <Standard>
            <ProductID>200058</ProductID>
            <Prefix>ISO</Prefix>
            <SNumber>1002</SNumber>
            <DraftProducts>
                <RelatedProduct>
                    <ProductID>1500167</ProductID>
                </RelatedProduct>
            </DraftProducts>
            <ReferenceProducts>
                <RelatedProduct>
                    <ProductID>263974</ProductID>
                    <RelationId>708519</RelationId>
                    <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                </RelatedProduct>
                <RelatedProduct>
                    <ProductID>320052</ProductID>
                    <RelationId>934754</RelationId>
                    <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                </RelatedProduct>
            </ReferenceProducts>
            <RelatedIntProducts>
                <RelatedProduct>
                    <ProductID xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                    <RelationId>116837</RelationId>
                    <Relationship>Identical</Relationship>
                    <Designation>NEN ISO 1001</Designation>
                </RelatedProduct>
                <RelatedProduct>
                    <ProductID>208074</ProductID>
                    <RelationId>116843</RelationId>
                    <Relationship>Identical</Relationship>
                    <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                </RelatedProduct>
            </RelatedIntProducts>
            <S1>1005</S1>
            <S2>1983</S2>
        </Standard>
    </Standards>

进入以下输出格式。

<Standards xmlns="http://ws.wso2.org/dataservice">
    <Product>
        <ProductID>200057</ProductID>
        <Prefix>ISO</Prefix>
        <SNumber>1001</SNumber>
        <RelatedProducts>
            <RelatedProduct>
                <ProductID>1500163</ProductID>
                <RelationType>DraftProducts</RelationType>
            </RelatedProduct>
            <RelatedProduct>
                <ProductID>263973</ProductID>
                <RelationId>708519</RelationId>
                <RelationType>ReferenceProducts</RelationType>
                <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
            </RelatedProduct>
            <RelatedProduct>
                <ProductID>320056</ProductID>
                <RelationId>934789</RelationId>
                <RelationType>ReferenceProducts</RelationType>
                <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
            </RelatedProduct>
            <RelatedProduct>
                <ProductID xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                <RelationId>116881</RelationId>
                <Relationship>Identical</Relationship>
                <RelationType>RelatedIntProducts</RelationType>
                <Designation>NEN ISO 1001</Designation>
            </RelatedProduct>
            <RelatedProduct>
                <ProductID>208076</ProductID>
                <RelationId>116886</RelationId>
                <RelationType>RelatedIntProducts</RelationType>
                <Relationship>Identical</Relationship>
                <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
            </RelatedProduct>
        </RelatedProducts>
        <S1>1001</S1>
        <S2>1986</S2>
    </Product>
    <Product>
        <ProductID>200058</ProductID>
        <Prefix>ISO</Prefix>
        <SNumber>1002</SNumber>
        <RelatedProducts>
            <RelatedProduct>
                <ProductID>1500167</ProductID>
                <RelationType>DraftProducts</RelationType>
            </RelatedProduct>
            <RelatedProduct>
                <ProductID>263974</ProductID>
                <RelationId>708519</RelationId>
                <RelationType>ReferenceProducts</RelationType>
                <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
            </RelatedProduct>
            <RelatedProduct>
                <ProductID>320052</ProductID>
                <RelationId>934754</RelationId>
                <RelationType>ReferenceProducts</RelationType>
                <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
            </RelatedProduct>
            <RelatedProduct>
                <ProductID xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
                <RelationId>116837</RelationId>
                <RelationType>RelatedIntProducts</RelationType>
                <Relationship>Identical</Relationship>
                <Designation>NEN ISO 1001</Designation>
            </RelatedProduct>
            <RelatedProduct>
                <ProductID>208074</ProductID>
                <RelationId>116843</RelationId>
                <RelationType>RelatedIntProducts</RelationType>
                <Relationship>Identical</Relationship>
                <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
            </RelatedProduct>
        </RelatedProducts>
        <S1>1005</S1>
        <S2>1983</S2>
    </Product>
</Standards>

在其他人的帮助下，我可以编写以下xslt来进行此转换。

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:x="http://ws.wso2.org/dataservice" xmlns="http://ws.wso2.org/dataservice"
    exclude-result-prefixes="x" version="1.0">

    <xsl:output indent="yes" method="xml" />

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

    <xsl:template match="x:Standard">
        <Product>
            <xsl:copy-of select="x:ProductID" />
            <xsl:copy-of select="x:Prefix" />
            <xsl:copy-of select="x:SNumber" />
            <xsl:copy-of select="x:Year" />
            <xsl:copy-of select="x:Designation" />
            <xsl:copy-of select="x:Publisher" />
            <RelatedProducts>
                <xsl:apply-templates select=".//x:RelatedProduct" />
            </RelatedProducts>
            <xsl:copy-of select="x:ProductICSCodes" />
            <xsl:copy-of select="x:ProductDescriptions" />
            <xsl:copy-of select="x:IndustryCodes" />
            <xsl:copy-of select="x:ProductAttributes" />
            <xsl:copy-of select="x:ProductReconfirmationNotices" />
            <xsl:copy-of select="x:Type" />
            <xsl:copy-of select="x:SaleItems" />
            <xsl:copy-of select="x:Committee" />
            <xsl:copy-of select="x:CommentClosesDate" />
            <xsl:copy-of select="x:Note" />
            <xsl:copy-of select="x:InternalNote" />
            <xsl:copy-of select="x:DummyProductLink" />
            <xsl:copy-of select="x:Status" />
            <xsl:copy-of select="x:State" />
            <xsl:copy-of select="x:UpdateNote" />
            <xsl:copy-of select="x:ThumbnailPath" />
            <xsl:copy-of select="x:SortOrder" />
            <xsl:copy-of select="x:EntryDate" />
            <xsl:copy-of select="x:ExpiryDate" />
            <xsl:copy-of select="x:SupersededDate" />
            <xsl:copy-of select="x:UpdateDate" />
            <xsl:copy-of select="x:WithdrawnDate" />
            <xsl:copy-of select="x:PluginName" />
            <xsl:copy-of select="x:S1" />
            <xsl:copy-of select="x:S2" />
            <xsl:copy-of select="x:S3" />
            <xsl:copy-of select="x:S4" />
            <xsl:copy-of select="x:S5" />
            <xsl:copy-of select="x:S6" />
            <xsl:copy-of select="x:S7" />
            <xsl:copy-of select="x:S8" />
            <xsl:copy-of select="x:S9" />
            <xsl:copy-of select="x:S10" />
            <xsl:copy-of select="x:HasLexConnect" />
            <xsl:copy-of select="x:HasCodeConnect" />
        </Product>
    </xsl:template>
    <xsl:template match="x:RelatedProduct">
        <xsl:copy>
            <xsl:apply-templates select="@*|*[not(name()='RelationId')]" />
            <RelationType>
                <xsl:value-of select="name(..)" />
            </RelationType>
        </xsl:copy>
    </xsl:template>

</xsl:stylesheet>

现在我需要将根元素重命名为产品而不是标准，并从输出中删除所有 nil 值。 nil值具有以下格式。

 <Designation xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
        <Abstract xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
        <History xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>
        <TOC xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/>

我添加了以下xslt段，它将根元素重命名为产品。

<xsl:template match="x:Standards">
    <Products namespace="{namespace-uri()}">
        <xsl:apply-templates select=".//x:Standard" />
    </Products>
</xsl:template>

这是对的吗？如何更改上面的xslt以消除输出中的所有 nil 值。任何帮助将不胜感激。

1 个答案:

答案 0 :(得分：1)

将xsi的名称声明添加到样式表

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

添加模板以忽略xsi:nil 

<xsl:template match="@xsi:nil"/>

并将xsl:copy-of更改为xsl:apply-templates。 例如更改：

<xsl:copy-of select="x:ProductID" />

为：

<xsl:apply-templates select="x:ProductID" />

<强>更新
要忽略具有nil属性的所有节点，请尝试：

<xsl:template match="*[@xsi:nil]"/>
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