Spring JSON request getting 406 (not Acceptable)

Question

this is my javascript:

    function getWeather() {
        $.getJSON('getTemperature/' + $('.data option:selected').val(), null, function(data) {
            alert('Success');                               
        });
    }

this is my controller:

@RequestMapping(value="/getTemperature/{id}", headers="Accept=*/*", method = RequestMethod.GET)
@ResponseBody
public Weather getTemparature(@PathVariable("id") Integer id){
    Weather weather = weatherService.getCurrentWeather(id);
        return weather;
}

spring-servlet.xml

<context:annotation-config />
<tx:annotation-driven />

Getting this error:

GET http://localhost:8080/web/getTemperature/2 406 (Not Acceptable)

Headers:

Response Headers

Server  Apache-Coyote/1.1
Content-Type    text/html;charset=utf-8
Content-Length  1070
Date    Sun, 18 Sep 2011 17:00:35 GMT

Request Headers

Host    localhost:8080
User-Agent  Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0.2) Gecko/20100101 Firefox/6.0.2
Accept  application/json, text/javascript, */*; q=0.01
Accept-Language en-us,en;q=0.5
Accept-Encoding gzip, deflate
Accept-Charset  ISO-8859-1,utf-8;q=0.7,*;q=0.7
Connection  keep-alive
X-Requested-With    XMLHttpRequest
Referer http://localhost:8080/web/weather
Cookie  JSESSIONID=7D27FAC18050ED84B58DAFB0A51CB7E4

Interesting note:

I get 406 error, but the hibernate query works meanwhile. This is what tomcat log says, everytime when I change selection in dropbox:

 select weather0_.ID as ID0_0_, weather0_.CITY_ID as CITY2_0_0_, weather0_.DATE as DATE0_0_, weather0_.TEMP as TEMP0_0_ from WEATHER weather0_ where weather0_.ID=?

What could the problem be? There were two similar questions in SO before, I tried all the accepted hints there, but they did not work I guess...

Any suggestions? Feel free to ask questions...

Answer 1

Probably no one is scrolling down this far, but none of the above solutions fixed it for me, but making all my getter methods public did.

I'd left my getter visibility at package-private; Jackson decided it couldn't find them and blew up. (Using @JsonAutoDetect(getterVisibility=NON_PRIVATE) only partially fixed it.

Answer 2

Other then the obvious problems I had another one that I couldn't fix regardless of including all possible JARs, dependancies and annotations in Spring servlet. Eventually I found that I have wrong file extension by that I mean I had two separate servlet running in same container and I needed to map to different file extensions where one was ".do" and the other as used for subscriptions was randomly named ".sub". All good but SUB is valid file extension normally used for films subtitle files and thus Tomcat was overriding the header and returning something like "text/x-dvd.sub..." so all was fine but the application was expecting JSON but getting Subtitles thus all I had to do is change the mapping in my web.xml file I've added:

<mime-mapping>
    <extension>sub</extension>
    <mime-type>application/json</mime-type>
</mime-mapping>

Answer 3

Finally found answer from here:

Mapping restful ajax requests to spring

I quote:

@RequestBody/@ResponseBody annotations don't use normal view resolvers, they use their own HttpMessageConverters. In order to use these annotations, you should configure these converters in AnnotationMethodHandlerAdapter, as described in the reference (you probably need MappingJacksonHttpMessageConverter).