[jira] [Created] (FREEMARKER-185) eval_json fails

["Aniruddha (Jira)" <ji...@apache.org>]

Aniruddha created FREEMARKER-185:
------------------------------------

             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]

----
FTL stack trace ("~" means nesting-related):
    - Failed at: ${vals}  [in template "sample" at line 1, column 173]
----
{{}}

 



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