How to have Json data available to a html view and its javascript code using a Spring mvc controller

Question

I use a Spring MVC controller method in order to display a html view and that view requires JSON data that is available in the model i.e. a collection/array of postcodes.

I thought of outputting the JSON data inline in the html view inside <script tags but before doing so I would like to know whether there isn't a better practice...

Can anyone please advise?

Dave L. · Accepted Answer · 2013-03-05 18:25:35Z

1

You might want to do something like:

@RequestMapping(value="/yourmapping", method=RequestMethod.GET, produces={MediaType.TEXT_HTML_VALUE, MediaType.ALL_VALUE})
public String page(Model m){        
    m.addAttribute("postcodes", new ArrayList<String>());       
    return "your-jsp-name";
}

Then in your jsp you can access the collection like ${postcodes} and loop over it or set its string representation into a hidden span for example and then your JavaScript can process the data.

EDIT:

<script type="text/javascript">
    var postcodes = "${postcodes}"; 
</script>

edited Mar 5, 2013 at 18:25

answered Mar 5, 2013 at 16:57

Dave L.

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2 Comments

balteo Over a year ago

I implemented your solution. I actually wanted to avoid putting hidden html in the DOM but never mind... Thanks.

Dave L. Over a year ago

Well you don't have to use a span, you could also access ${postcodes} in a script block -- see my edit.

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