CODEWITHSUNDEEP
domnamespacesrenderingfreemarkerxml-namespaces
user3768495
user3768495

Reputation: 4657

How namespaces in XML and FreeMarker template work together?

I have read a few relevant topics on here and now have a basic understanding of the namespace concept. But I still have some difficulties getting my template to work with my XML data.

When there is no namespace involved, this template and this XML works fine:

ftl:

${pp.doc.user1.name}

XML:

<?xml version="1.0" encoding="UTF-8" ?>
<user1>
    <name>Jack</name>
</user1>

However, if there is namespace defined in the XML file, like this:

<?xml version="1.0" encoding="UTF-8" ?>
<user1 xmlns="https://example.com/xyz">
    <name>Jack</name>
</user1>

I got error messages:

Error when processing this file: data\test1.xml
FreeMarker template error: For "${...}" content: Expected a string or something automatically convertible to string (number, date or boolean), or "template output" , but this has evaluated to a sequence+hash (wrapper: f.e.dom.NodeListModel):
==> pp.doc.user1.name  [in template "renderer/test.ftlh" at line 1, column 3]

----
Tip: This XML query result can't be used as string because for that it had to contain exactly 1 XML node, but it contains 0 nodes. That is, the constructing XML query has found no matches.
----

----
FTL stack trace ("~" means nesting-related):
        - Failed at: ${pp.doc.user1.name}  [in template "renderer/test.ftlh" at line 1, column 1]
----

My current understanding is that in the ftl, I need to use <#ftl ns_prefixes={"ns": "https://example.com/xyz"}> or something like this, but none of the things I tried have worked. Please kindly help. Thank you!

Upvotes: 1

Views: 395

Answers (1)

ddekany
ddekany

Reputation: 31152

In pp.doc.user1.name you aren't using any namespace prefix, so the elements are assumed to belong to the default namespace, which is by default nothing. To set it, use <#ftl ns_prefixes={"D": "https://example.com/xyz"}>. D is a prefix reserved for this purpose.

Upvotes: 2

Related Questions