Convert JSON to XML using XSLT 3.0 - escape ampersand in element key

问题

Usign XSLT we wish to transform the JSON to XML :

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:math="http://www.w3.org/2005/xpath-functions/math" xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-result-prefixes="xs math" version="3.0">
<xsl:output indent="yes" />
    <xsl:template match="data">
        <xsl:copy-of select="json-to-xml(.)" />
    </xsl:template>
</xsl:stylesheet>

We have follwing JSON output from Microsoft Dynamics 365 that we wish to convert to XML.

JSON :

<data>
{
    "@odata.context": "https:\/\/xxx.api.crm4.dynamics.com\/api\/data\/v9.0\/$metadata#msdyn_bookingjournals(msdyn_journaltype,msdyn_name,msdyn_starttime,msdyn_endtime,msdyn_duration,foc_sapstatisticalkeyfigurecod,statecode)",
    "value": [
    {
        "@odata.etag": "W\/\"3935842\"",
        "msdyn_journaltype@OData.Community.Display.V1.FormattedValue": "Travel",
        "msdyn_journaltype": 690970002,
        "msdyn_name": "Wartung  - Wartung - 101 Innener Verkehrsring\/D\u00fcsseldorferstr ",
        "msdyn_starttime@OData.Community.Display.V1.FormattedValue": "13.11.2018 13:11",
        "msdyn_starttime": "2018-11-13T13:11:58Z",
        "msdyn_endtime@OData.Community.Display.V1.FormattedValue": "13.11.2018 13:15",
        "msdyn_endtime": "2018-11-13T13:15:58Z",
        "msdyn_duration@OData.Community.Display.V1.FormattedValue": "4",
        "msdyn_duration": 4,
        "foc_sapstatisticalkeyfigurecod": "",
        "statecode@OData.Community.Display.V1.FormattedValue": "Active",
        "statecode": 0,
        "msdyn_bookingjournalid": "cb6d62ee-49e7-e811-a958-000d3a29fea4"
    },
    {
        "@odata.etag": "W\/\"3935846\"",
        "msdyn_journaltype@OData.Community.Display.V1.FormattedValue": "Working Hours",
        "msdyn_journaltype": 690970000,
        "msdyn_name": "Wartung  - Wartung - 101 Innener Verkehrsring\/D\u00fcsseldorferstr ",
        "msdyn_starttime@OData.Community.Display.V1.FormattedValue": "13.11.2018 13:15",
        "msdyn_starttime": "2018-11-13T13:15:58Z",
        "msdyn_endtime@OData.Community.Display.V1.FormattedValue": "13.11.2018 13:20",
        "msdyn_endtime": "2018-11-13T13:20:57Z",
        "msdyn_duration@OData.Community.Display.V1.FormattedValue": "4",
        "msdyn_duration": 4,
        "foc_sapstatisticalkeyfigurecod": "",
        "statecode@OData.Community.Display.V1.FormattedValue": "Active",
        "statecode": 0,
        "msdyn_bookingjournalid": "fe6d62ee-49e7-e811-a958-000d3a29fea4"
    }
    ],
    "@odata.nextLink": "https:\/\/xxx.api.crm4.dynamics.com\/api\/data\/v9.0\/bookableresourcebookings(b0fe5834-45e7-e811-a958-000d3a29fb7a)\/msdyn_bookableresourcebooking_msdyn_bookingjournal_Booking?$select=msdyn_journaltype,msdyn_name,msdyn_starttime,msdyn_endtime,msdyn_duration,foc_sapstatisticalkeyfigurecod,statecode&$skiptoken=%3Ccookie%20pagenumber=%222%22%20pagingcookie=%22%253ccookie%2520page%253d%25221%2522%2520parentEntityId%253d%2522b0fe5834-45e7-e811-a958-000d3a29fb7a%2522%2520parentAttributeName%253d%2522msdyn_booking%2522%2520parentEntityObjectTypeCode%253d%25221145%2522%253e%253cmsdyn_bookingjournalid%2520last%253d%2522%257bFE6D62EE-49E7-E811-A958-000D3A29FEA4%257d%2522%2520first%253d%2522%257bCB6D62EE-49E7-E811-A958-000D3A29FEA4%257d%2522%2520%252f%253e%253c%252fcookie%253e%22%20istracking=%22False%22%20\/%3E"
}
</data>

When testing this XSLT transformation on https://www.freeformatter.com/xsl-transformer.html, I get following error

Unable to generate the XML document using the provided XML/XSL input.
org.xml.sax.SAXParseException; lineNumber: 38; columnNumber: 325;
The entity name must immediately follow the '&' in the entity reference.
You most likely forgot to escape '&' into '&amp;'

Apparently this is due to the unescaped ampersand after statecode in

"@odata.nextLink":"...foc_sapstatisticalkeyfigurecod,statecode&$skiptoken="

Conversion works fine when replacing the & with the escaped value :

"@odata.nextLink":"...foc_sapstatisticalkeyfigurecod,statecode&amp;$skiptoken="

Is there a way to escape forbidden XML characters in the XSLT conversion from JSON to XML?

回答1:

No, if you don't have well formed XML, there is not much you can do with XSLT.

First repair the XML, then do the XSLT processing. Options for fixing the XML are presented in another answer.

回答2:

There is no XSLT version 4.0.

At some stage in your processing chain, you wrapped some JSON (or JSON-like) text in <data>...</data> tags without taking care to ensure that special characters in the JSON text were properly escaped.

In fact, wrapping the JSON in an XML wrapper isn't necessary. You can read the JSON input file directly using json-to-xml(unparsed-text('input.json')). You would then typically start the transformation by executing a named template (called, say, 'main' or 'xsl:initial-template') rather than by supplying a source XML document and using match="/".

来源：https://stackoverflow.com/questions/54096434/convert-json-to-xml-using-xslt-3-0-escape-ampersand-in-element-key

标签

json

xml

xslt

xpath

saxon