Re: Weird stuff in hashmap

Friday, June 4, 2010, 5:12:53 PM, gz1 wrote:

>
> Hello,
>
> I'm trying to iterate over my hashmap like this:
>
> (first populate the map in Java):
>
> HashMap<String,String> foo = new HashMap<String,String>();
> foo.put("hey","you");
> foo.put("one","two");
> root.put("stuff", foo); // map passed to template.process()
>
> Now access it in ftl:
>
>                         <#list stuff?keys as key>
>                                 <h3>${key}</h3>
>                         </#list>
>
> I get stuff like this in my output:
>
> put
> remove
> entrySet
> hashCode
> productElement
> clear
> isEmpty
> hey
> values
> empty
> underlying
> productElements
> copy
> getClass
> get
> copy$default$1
> equals
> productPrefix
> class
> canEqual
> keySet
> size
> one
> containsKey
> productArity
> containsValue
> productIterator
> toString
> putAll
>
> What's all this crap?

The ObjectWrapper, which is most certainly a BeansWrapper instance in
your case, was configured incompletely, and thus the methods are the
items of the Map as well (like they are of all POJO-s). You have to
call yourObjectWrapper.setSimpleMapWrapper(true) where you set up
FreeMarker (see also:
freemarker.template.Configuration.set/getObjectWrapper). Note that
this way you won't be able to call the methods of Map-s. Either this
or that...

> My "hey" and "one" are there--and work fine if I
> access them like ${stuff["hey"]}
>
> But I want to iterate over all my keys and don't want all this other stuff,
> which looks like introspected stuff from HashMap.
>
> Any ideas appreciated.  Thanks!
> Greg

-- 
Best regards,
 Daniel Dekany


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