SpringMVC is not recognizing request body parameters if using PUT

Question

Maybe this is supposed to not work, but at least I\'d like to understand why then. I am passing a simple val=somevalue in the PUT body but spring sends back a <

Answer 1

I don't have right solution for you, but in your case I try following:

• create page with form:form method="PUT"
• declare HiddenHttpMethodFilter in web.xml

If this will works, then

• change type from PUT to POST in ajax call
• add needed params which client has with form:form tag (something like _method)

In other words, as I understand Spring emulates PUT based on simple POST with special parameter. Just send to him what he wants.

See also: http://stsmedia.net/spring-finance-part-2-spring-mvc-spring-30-rest-integration/ and related code examples there: http://code.google.com/p/spring-finance-manager/source/browse

HTH

Answer 2

Since Spring 3.1, this is resolved using org.springframework.web.filter.HttpPutFormContentFilter.

<filter>
    <filter-name>httpPutFormContentFilter</filter-name>
    <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
</filter>

<filter-mapping>
    <filter-name>httpPutFormContentFilter</filter-name>
    <servlet-name>rest</servlet-name>
</filter-mapping>

Answer 3

I don't know of a work around at this point, but here is the bug report that is a "Won't Fix." I've been fighting the same issue

https://jira.springsource.org/browse/SPR-7414

Update: Here is my fix. I'm using RequestBody annotation. Then using MultiValueMap.

http://static.springsource.org/spring/docs/3.0.5.RELEASE/reference/mvc.html#mvc-ann-requestbody

@RequestMapping(value = "/{tc}", method = RequestMethod.PUT) 
public void update(@PathVariable("tc") final String tc, 
@RequestBody MultiValueMap<String,String> body, HttpServletResponse response) {

    String name = body.getFirst("name");
// more code
}

Answer 4

This, as suggest above, seems to be a bug in spring/servlet API. In reality PUT requests are supposed to work on Request Body (or payload) and not on Request Parameters. In that sense, servlet API & spring's handling is correct.

Having said that, a better and much easier workaround is to pass no data element from your javascript/jQuery call and pass your parameters as part of the url itself. meaning, set parameters in the url field the way you would do in a GET call.

$.ajax({
            url: "yoururl" + "?param1=param2Val&..",
            type: "PUT",
            data: "",
            success: function(response) {
                // ....
            }
     });

now this works for simple parameters, i guess, will not work for complex JSON types. Hope this helps.