Saturday, 9 April 2011

JSON data

Convert data into JSON format in Spring:

First import the following :
com.thoughtworks.xstream.io.json.JsonHierarchicalStreamDriver;

    private class XStreamJsonView implements View {

        public void render(Map<String, ?> model, HttpServletRequest req,
                HttpServletResponse res) throws Exception {
            XStream xs = new XStream(new JsonHierarchicalStreamDriver());
            xs.setMode(XStream.NO_REFERENCES);
          
            xs.toXML(model, res.getWriter());
        }


        public String getContentType() {
            return "application/json";
        }
 You can use XStreamJsonView in the following way for any responses in controller:
    @RequestMapping("/example.json")
    public ModelAndView listTestSuites() throws someException {
        List<String> answer = new ArrayList<String>();
        for (loopforSomething var : something.getNames()) {
            answer.add(var.getFirstName());
        }
        Map<String, List<String>> model = new HashMap<String, List<String>>();
        model.put("someString", passitAsResponseVariable);
        return new ModelAndView(new XStreamJsonView(),model);
    }








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