Spring MVC - Cannot map request parameters as a Map parameter in method?

Posted by Ken Chen on Stack Overflow See other posts from Stack Overflow or by Ken Chen
Published on 2010-05-22T05:16:56Z Indexed on 2010/05/22 5:20 UTC
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spring-mvc

What I want to do is passing a map to the method in Controller using @RequestParam, but it seems not working. While this is working in Struts 2.

Below is what I am trying: In JSP using JQuery: var order = {}; order['seq'] = "ASC"; var criteria = {}; criteria['label'] = "Directory";

$.post(context + 'menu/list',
    {"orders" : order,
     "criterias" : criteria}

The parameters I am trying to post is an 'map' object order and criteria for listing menu. In Java:

    @RequestMapping("/{collection}/list")
public @ResponseBody Map<String, ? extends Object> list(@PathVariable String collection,
        @RequestParam("criterias") Map<String, String> criteria,
        @RequestParam("orders") Map<String, String> order) {

However, when I print out the map criteria & order in Java, it takes all value as below:

Criteria: {criterias[label]=Directory, orders[seq]=ASC}
Order: {criterias[label]=Directory, orders[seq]=ASC}

Can @RequestParam in Spring be used to init a Map parameter?

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