java - Spring找不到HTTP请求的映射

Question

我正在尝试创建一个简单的网络应用程序，它允许用户创建主题并对其进行评论。这个想法是，启动一个主题后，用户被重定向到该主题的页面。

@Controller
public class HomeController {

    @RequestMapping(value = "/create", method = RequestMethod.GET)
    public ModelAndView create(Locale locale, Model model)
    {
         Topic newTopic = new Topic();
         logger.info("HomeControlller: Create");
         List<Tag> tagList = newTopic.getTagLict();
         Hashtable modelData = new Hashtable();
         modelData.put("newTopic", newTopic);
         modelData.put("tagList", tagList);

         return new ModelAndView("create", modelData);

    }

    @RequestMapping(value = "/create", method = RequestMethod.POST)
    public String saveNewTopic(@ModelAttribute("newTopic")Topic topic, BindingResult result, Model model)
    {
         validate(topic, result);
         // Go to the "Show topic@ page
         return "redirect:details/"+service.saveTopic(topic);       
}

    @RequestMapping(value = "/details/(topicId)", method = RequestMethod.GET)
    public ModelAndView details(@PathVariable(value="topicId") int id)
    {
            logger.info("HomeControlller: Details: Found a method");        
            Topic topicById = service.findTopicByID((long) id);
            logger.info("HomeControlller: Details: Performing redirect");
            return new ModelAndView("/topic/", "model", topicById);
     }


}

但是在创建主题后，我收到错误在名称为“appServlet”的 DispatcherServlet 中未找到带有 URI [/simpleblog/details/9] 的 HTTP 请求的映射。我不明白出了什么问题，因为 HTTP 请求是用注释映射的。它适用于 create() 和 saveNewTopic() 函数，但不适用于 details() 函数。

Answer 1

路径变量的语法是{foo}，而不是(foo):

@RequestMapping(value = "/details/{topicId}", method = RequestMethod.GET)
public ModelAndView details(@PathVariable(value="topicId") int id)