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https://issues.apache.org/jira/browse/FREEMARKER-90?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16368790#comment-16368790
]
smforapache commented on FREEMARKER-90:
---------------------------------------
Thanks Daniel.
I just reproduced this using http://try.freemarker.org/.
Please find below.
Data model :
getProductCategories = {"categories": {"Daily Special": {},"Main Course": {}}}
payLoad = {"category" : "Daily Special"}
ftl :
{
"recipient":{
"id":""
},
"message": {
"text": "${payLoad.category}",
"quick_replies": [
<#assign subcategory_string =
"getProductCategories.categories."+"${payLoad.category}">
<#assign subcategories = subcategory_string?eval>
<#list subcategories?keys as subcategory>
{
"payload" : "{\"intent\": \"ordermenu\", \"category\":
\"${payLoad.category}\",\"subcategory\": \"${subcategory}\"}",
"title":"${subcategory}",
"content_type": "text"
}
<#sep>, </#sep>
</#list>
]
}
}
result :
Failed to "?eval" string with this error:
---begin-message---
Syntax error in ?eval-ed string in line 1, column 40:
Encountered "Special", but was expecting one of:
".."
<DOT_DOT_LESS>
"..*"
")"
---end-message---
The failing expression:
==> subcategory_string?eval [in nameless template at line 10, column 26]
----
FTL stack trace ("~" means nesting-related):
- Failed at: #assign subcategories = subcategory_s... [in nameless
template at line 10, column 1]
----
> Unable to parse keys of json having spaces
> ------------------------------------------
>
> Key: FREEMARKER-90
> URL: https://issues.apache.org/jira/browse/FREEMARKER-90
> Project: Apache Freemarker
> Issue Type: Bug
> Reporter: smforapache
> Priority: Critical
> Attachments: getSubCategories.ftl
>
>
> Facing issues while trying to parse JSON having keys with spaces in
> freemarker template.
> Sample JSON :
> {
> "response": {
> "categories": {
> "Daily Special": {},
> "Main Course": {}
> }
> }
> }
> Attached the ftl file used to parse this.
> script in ftl which is failing where payLoad.category is Daily Special.
> <#assign subcategory_string = "response.categories."+"${payLoad.category}">
> <#assign subcategories = subcategory_string?eval>
> Exception :
> [WARN ] 2018-02-18 10:07:54.085 [asyncExecutor-3] TemplateBuilder -
> TemplateBuilder: Unable to substitute template
> freemarker.core._MiscTemplateException: Failed to "?eval" string with this
> error:
> ---begin-message---
> Syntax error in ?eval-ed string in line 1, column 40:
> Encountered "Special", but was expecting one of:
> ".."
> <DOT_DOT_LESS>
> "..*"
> ")"
> "."
> "["
> "("
> "?"
> "!"
> <TERMINATING_EXCLAM>
> "??"
> "+"
> "-"
> "*"
> "/"
> "%"
> "!="
> "="
> "=="
> ">="
> <ESCAPED_GTE>
> ">"
> <ESCAPED_GT>
> <LESS_THAN_EQUALS>
> <LESS_THAN>
> <AND>
> <OR>
> ---end-message---
> The failing expression:
> ==> subcategory_string?eval [in template "TEMPLATE" at line 10, column 26]
> ----
> FTL stack trace ("~" means nesting-related):
> - Failed at: #assign subcategories = subcategory_s... [in template
> "TEMPLATE" at line 10, column 1]
> ----
> at
> freemarker.core.BuiltInsForStringsMisc$evalBI.calculateResult(BuiltInsForStringsMisc.java:70)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> at freemarker.core.BuiltInForString._eval(BuiltInForString.java:26)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> at freemarker.core.Expression.eval(Expression.java:78)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> at freemarker.core.Assignment.accept(Assignment.java:131)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> at freemarker.core.Environment.visit(Environment.java:324)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> at freemarker.core.MixedContent.accept(MixedContent.java:54)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> at freemarker.core.Environment.visit(Environment.java:324)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> at freemarker.core.Environment.process(Environment.java:302)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> at freemarker.template.Template.process(Template.java:325)
> ~[freemarker-2.3.23.jar!/:2.3.23]
> Is there any way to get out of this issue ?
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