Spring MVC @ResponseBody return a List

Question

We would like to create a \"WebService\" which return a list of specific objects. And we would like to call this webservice from another java program by apache http clients libr

Answer 1

Actually you have to use REST web service that carry JSON/XML format as Objects representation. I prefer JSON because this is very light weight.

First you need to add dependency in your Pom.xml

org.codehaus.jackson
jackson-mapper-asl
1.7.1

and your method handler is here

    @ResponseBody
    @RequestMapping(value = "/your URL")
    public ArrayList getInboxPage(@RequestParam int var,HttpSession session) {

        ArrayList fooList=new ArrayList();
        fooList.add(1L);
        fooList.add(2L);
        fooList.add(3L);

        return fooList;

    }

NOTE: Spring automatically make JSON if you write @ResponseBody annotation in your method handler you don't need to add Jackson dependency in your pom.xml file.