Question

我正在开发spring-mvc web应用程序，我遇到了一些映射问题：我的web.xml：

  <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">

<display-name>Spring MVC Application</display-name>


    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
<welcome-file-list>
    <welcome-file>pages/index.jsp</welcome-file>
</welcome-file-list>

</web-app>

我的控制器：

 @Controller
    public class MainController {

    @Autowired
    UserService userService;
    @Autowired
    PhotosService photosService;

    @RequestMapping(method=RequestMethod.GET)
    public String loadIndex(Model model)
    {
        model.addAttribute("firstName", "WWWALTER");
        return "index";
    }

    @RequestMapping(value = "/upload", method = RequestMethod.POST)
    public String save( @ModelAttribute("document") PhotosEntity photosEntity,
            @RequestParam("file") MultipartFile file) {
        Blob blob = null;
        try {
            blob = new SerialBlob(file.getBytes());
        } catch (SQLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
      //  PhotosEntity photosEntity = new PhotosEntity();
        photosEntity.setContent(blob);
        photosEntity.setFilename(file.getOriginalFilename());

        photosService.saveFile(photosEntity);

        return "index";
    }

此外，我在tomcat 7中有一个应用程序名称 - ＆＃34; c2＆＃34;。所以我应该用＆＃34; c2 /＆＃34;前缀？

你能帮我创建正确的映射吗？我想在第一个方法中添加一个属性，并在jsp页面中检索它：

 @RequestMapping(method=RequestMethod.GET)
    public String loadIndex(Model model)
    {
        model.addAttribute("firstName", "WWWALTER");
        return "index";
    }

- 但是这个方法没有被调用。

Answer 1

您可以从jsp-page中检索如下所示的属性：${firstName}。

还可以尝试将@RequestMapping(method=RequestMethod.GET)更改为@RequestMapping(value = "/", method=RequestMethod.GET)

Answer 2

这听起来很愚蠢。但我只是忘了把

<mvc:annotation-driven />

在servlet上下文文件中。遗憾！

无法正确执行spring-mvc映射

2 个答案: