java - PropertyEditor 未根据 AJAX (JSON) 请求调用

Question

我在提交表单时遇到 Ajax 请求问题。表单包含这些字符串化 JSON 数据:

{"articleContent":"<p>aaa</p>","title":"Po vyplnění titulku aktuality budete","header":"aa","enabled":false,"timestamp":"1358610697521","publishedSince":"03.01.2013 00:00","publishedUntil":"","id":"10"}

当 json 包含 "03.01.2013 00:00" 值时，服务器响应为 400 Bad Request

问题是，没有调用自定义 DateTimePropertyEditor(使用@InitBinder 注册)，并且没有转换 String 格式的 DateTime。你知道如何解决这个问题吗？

Controller 映射方法，即处理请求

@RequestMapping( value = "/admin/article/edit/{articleId}", method = RequestMethod.POST, headers = {"content-type=application/json"})
public @ResponseBody JsonResponse  processAjaxUpdate(@RequestBody Article article, @PathVariable Long articleId){
    JsonResponse response = new JsonResponse();
    Article persistedArticle = articleService.getArticleById(articleId);
    if(persistedArticle == null){
        return response;
    }
    List<String> errors = articleValidator.validate(article, persistedArticle);

    if(errors.size() == 0){
        updateArticle(article, persistedArticle);
        response.setStatus(JsonStatus.SUCCESS);
        response.setResult(persistedArticle.getChanged().getMillis());
    }else{
        response.setResult(errors);
    }

    return response;
}

初始化绑定(bind)器

 @InitBinder
        public void initBinder(WebDataBinder binder) {
            binder.registerCustomEditor(DateTime.class, this.dateTimeEditor);
        }

Answer 1

我使用 @JsonDeserialize 解决了这个问题

@JsonDeserialize(using=DateTimeDeserializer.class)
public DateTime getPublishedUntil() {
    return publishedUntil;
}

我必须实现自定义反序列化器。

    public class DateTimeDeserializer extends StdDeserializer<DateTime> {

    private DateTimeFormatter formatter = DateTimeFormat.forPattern(Constants.DATE_TIME_FORMAT);

    public DateTimeDeserializer(){
        super(DateTime.class);
    }

    @Override
    public DateTime deserialize(JsonParser json, DeserializationContext context) throws IOException, JsonProcessingException {
            try {
                if(StringUtils.isBlank(json.getText())){
                    return null;
                }
                return formatter.parseDateTime(json.getText());
            } catch (ParseException e) {
                return null;
            }
    }
}