@RequestMapping(value="/getTestEntity", method=RequestMethod.GET)
    public @ResponseBody TestEntity test(){
        TestEntity e = new TestEntity();
        e.setId(3);
        e.setText("3");
        return e;
    }
@RequestMapping(
    value="/postTestEntity",
    method=RequestMethod.POST, produces=MediaType.APPLICATION_JSON_VALUE,
    consumes=MediaType.APPLICATION_JSON_VALUE)
    public @ResponseBody TestEntity test2(@RequestBody TestEntity ent){
        System.out.println(ent);
        return ent;
    }