java - Spring MVC 绑定(bind)结果有错误返回

Question

当绑定(bind)结果有错误处于 Activity 状态时，我想返回 http 错误或退出方法。我该怎么做？

 @RequestMapping(value = "/create", method = RequestMethod.POST)
    public Node create(@Valid @RequestBody Node node, BindingResult bindingResult) {
        LOG.info(String.format("Create new Node: %s", node));
        if (!bindingResult.hasErrors()) {
                return nodeService.create(node);
        }
        else{
            // How i can exit without return any Node object ?
        }
    }

Answer 1

直接返回 null。

    @RequestMapping(value = "/create", method = RequestMethod.POST)
    public Node create(@Valid @RequestBody Node node, BindingResult bindingResult) {
        LOG.info(String.format("Create new Node: %s", node));
        if (!bindingResult.hasErrors()) {
            return nodeService.create(node);
        } else {
            return null;
        }
    }