请求映射返回错误 404 [英] Request Mapping returning error 404

问题描述

这是我的控制器，将请求映射到这个 url http://localhost:8080/SpringMVCJSON/rest/kfc/brands

This is my controller that maps a request to this url http://localhost:8080/SpringMVCJSON/rest/kfc/brands

控制器文件

@Controller
@RequestMapping("/kfc/brands")
public class JSONController {

    @RequestMapping(value = "{name}", method = RequestMethod.GET)
    public @ResponseBody
    Shop getShopInJSON(@PathVariable String name) {

        Shop shop = new Shop();
        shop.setName(name);
        shop.setStaffName(new String[] { "name1", "name2" });

        return shop;

    }

这是带有 servlet 请求的 web.xml，它与 url 一起发送请求/响应

this is the web.xml with the servlet request that dispatches the request/response along with the url

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

    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

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

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

假设一切正常，当我在这个 url 上启动我的应用程序时，它返回错误 404 http://localhost:8080/SpringMVCJSON/rest/kfc/brands我的服务器控制台返回此警告

Assuming that everything is alright, when I launch my app on this url it returns error 404 http://localhost:8080/SpringMVCJSON/rest/kfc/brands My server console returns this warning

Apr 26, 2016 12:14:47 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/SpringMVCJSON/rest/kfc/brands] in DispatcherServlet with name 'mvc-dispatcher'

请问tomcat为什么不把请求映射到服务器?

Please why is tomcat not mapping request to the server?

推荐答案

您将控制器配置为在 /kfc/brands/{name} URL 上可用，但试图在 上访问它/kfc/brands.

You configured your controller to be available on /kfc/brands/{name} URL but trying to access it on /kfc/brands.

您可以在此处找到有关使用 @RequestMapping 的更多信息:http://docs.spring.io/autorepo/docs/spring/3.2.x/spring-framework-reference/html/mvc.html#mvc-ann-requestmapping

Here you can find more information about using @RequestMapping: http://docs.spring.io/autorepo/docs/spring/3.2.x/spring-framework-reference/html/mvc.html#mvc-ann-requestmapping

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