Check whether a string is null or empty in XSLT

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I have this snippet of XML code and I need to check this blank:

<CNPJ>
    <xsl:if "cnpjContratado"!=NULL>
        <xsl:value-of select="cnpjContratado"/>
    </xsl:if>
</CNPJ>
<CPF>
    <xsl:if "cpfContratado"!=NULL>
        <xsl:value-of select="cpfContratado"/>
    </xsl:if>
</CPF>
xml soap xslt

1 answer

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Problem solving:

<CNPJ>
    <xsl:if test="cnpjContratado != NULL">
        <xsl:value-of select="cnpjContratado"/>
    </xsl:if>
</CNPJ>
<CPF>
    <xsl:if test="cpfContratado != NULL">
        <xsl:value-of select="cpfContratado"/>
    </xsl:if>
</CPF>

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