@JsonGetter不起作用

Question

I want to make this method return {"valid":true/false}

@ResponseBody
@RequestMapping(value = "/checkUser", method = RequestMethod.POST)
Boolean checkUsersAvailable(@RequestParam("username") String username) {
    return contentService.getUser(username) == null;
}

I add these annotations:

@JsonGetter("valid")
@JsonProperty("valid")

But it's still not working.

Answer 1

You can't return a primitive type and get JSON object as a response. You can use a wrapper or something like that:

@ResponseBody
@RequestMapping(value = "/checkUser", method = RequestMethod.POST)
Map<String, Boolean> checkUsersAvailable(@RequestParam("username") String username) {
    boolean result = contentService.getUser(username) == null;
    return Collections.singletonMap("success", result);
}