Aniruddha created FREEMARKER-185:
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Summary: eval_json fails
Key: FREEMARKER-185
URL: https://issues.apache.org/jira/browse/FREEMARKER-185
Project: Apache Freemarker
Issue Type: Bug
Components: engine
Affects Versions: 2.3.31
Reporter: Aniruddha
{code:java}
// public static void main(String[] args) throws Throwable{
Configuration cfg = new Configuration(new Version("2.3.31"));
StringTemplateLoader stringLoader = new StringTemplateLoader();
cfg.setTemplateLoader(stringLoader);
StringBuilder sb = new StringBuilder();
sb.append("<#assign vals = '{ \"success\":true,
\"timestamp\":1627886463, \"base\":\"Data1\", \"date\":\"2021-08-02\",
\"values\":{ \"data2\":7.5, \"data3\":44, \"data4\":33
}}'?eval_json>");
sb.append("${vals}");
stringLoader.putTemplate("sample", sb.toString());
Map<String, Object> input = new HashMap<String, Object>();
Template template = cfg.getTemplate("sample");
Writer consoleWriter = new OutputStreamWriter(System.out);
template.process(input, consoleWriter);
}
{code}
The above code fails with below error
FreeMarker template error (DEBUG mode; use RETHROW in production!):
For "${...}" content: Expected a string or something automatically convertible
to string (number, date or boolean), or "template output" , but this has
evaluated to an extended_hash (wrapper: f.t.SimpleHash):
==> vals [in template "sample" at line 1, column 175]
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FTL stack trace ("~" means nesting-related):
- Failed at: ${vals} [in template "sample" at line 1, column 173]
----
{{}}
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