spring-mvc - Spring MVC 正在删除一个@PathVariable

Question

如果我多次敲打 Controller 并敲打它，偶尔我的 modelCode 参数会显示为 null。但是，URL 中包含 modelCode。使用 Spring Framework 3.0.5.RELEASE

 @RequestMapping(value="ws/getallvariants/{channelCode}/{modelCode}/{regionId}/{year}")    public ModelAndView getAllVariants(@PathVariable("channelCode") String channelCode,           @PathVariable("modelCode") String modelCode,@PathVariable("regionId") String regionId,@PathVariable("year") String year){ 
    if (modelCode == null)
    {
        int i = 0; // this should never hit, but does.
    }

Answer 1

是的，RegEx 对我来说也是最可靠的。这样做是为了获取电子邮件地址作为参数:

@RequestMapping(value = "rest/userreadserv/search/{email:.+}", method = RequestMethod.GET)
public ResponseEntity getUserAccountByEmail(@PathVariable String email) {...}