带有 mvc 控制器的 REST url

Question

也许我遗漏了一些东西，但我不能通过一个小问题

我正在构建一个简单的 Spring Boot 应用程序，并且我正在使用 MVC 控制器：@Controller 注释

在我的控制器中我有

@GetMapping("/trainee")
public String trainee(@RequestParam("id") long id, Model model) {

要输入该方法，我需要准备这样的网址：/trainne?id=1，我更喜欢/trainee/1

我知道第二个选项可以使用 REST 控制器，但我不能使用它，因为它不支持模板。我可以用 mvc 控制器制作一个漂亮的 REST 类型的 url 吗？

我也会补充

@Controller
@RequestMapping("/trainees")
public class TraineeController {

当我使用 @Ken Chan 建议的映射时，我会收到

2018-12-28 18:49:50.740 DEBUG 5960 --- [nio-8080-exec-5] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Looking up handler method for path /trainees/trainee/1
2018-12-28 18:49:50.740 DEBUG 5960 --- [nio-8080-exec-5] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Did not find handler method for [/trainees/trainee/1]
2018-12-28 18:49:50.740 DEBUG 5960 --- [nio-8080-exec-5] a.e.w.s.ControllerEndpointHandlerMapping : Looking up handler method for path /trainees/trainee/1
2018-12-28 18:49:50.740 DEBUG 5960 --- [nio-8080-exec-5] a.e.w.s.ControllerEndpointHandlerMapping : Did not find handler method for [/trainees/trainee/1]
2018-12-28 18:49:50.740 DEBUG 5960 --- [nio-8080-exec-5] o.s.b.w.s.f.OrderedRequestContextFilter  : Bound request context to thread: org.apache.catalina.connector.RequestFacade@6c120aea

//根据@Ben配置添加全调试

2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Looking up handler method for path /trainees/trainee/1
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Did not find handler method for [/trainees/trainee/1]
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] a.e.w.s.ControllerEndpointHandlerMapping : Looking up handler method for path /trainees/trainee/1
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] a.e.w.s.ControllerEndpointHandlerMapping : Did not find handler method for [/trainees/trainee/1]
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /trainees/trainee/1
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/trainees/trainee/1]
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] o.s.w.s.handler.SimpleUrlHandlerMapping  : Matching patterns for request [/trainees/trainee/1] are [/**]
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] o.s.w.s.handler.SimpleUrlHandlerMapping  : URI Template variables for request [/trainees/trainee/1] are {}
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapping [/trainees/trainee/1] to HandlerExecutionChain with handler [ResourceHttpRequestHandler [locations=[class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], ServletContext resource [/]], resolvers=[org.springframework.web.servlet.resource.PathResourceResolver@470d91ab]]] and 1 interceptor
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] o.s.b.w.s.f.OrderedRequestContextFilter  : Bound request context to thread: org.apache.catalina.connector.RequestFacade@3b6c5f54
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/trainees/trainee/1]
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Looking up handler method for path /trainees/trainee/1
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Did not find handler method for [/trainees/trainee/1]
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] a.e.w.s.ControllerEndpointHandlerMapping : Looking up handler method for path /trainees/trainee/1
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] a.e.w.s.ControllerEndpointHandlerMapping : Did not find handler method for [/trainees/trainee/1]
2018-12-28 21:22:43.113 DEBUG 13352 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /trainees/trainee/1
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/trainees/trainee/1]
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.w.s.handler.SimpleUrlHandlerMapping  : Matching patterns for request [/trainees/trainee/1] are [/**]
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.w.s.handler.SimpleUrlHandlerMapping  : URI Template variables for request [/trainees/trainee/1] are {}
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapping [/trainees/trainee/1] to HandlerExecutionChain with handler [ResourceHttpRequestHandler [locations=[class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], ServletContext resource [/]], resolvers=[org.springframework.web.servlet.resource.PathResourceResolver@470d91ab]]] and 1 interceptor
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/trainees/trainee/1] is: -1
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : Successfully completed request
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.b.w.s.f.OrderedRequestContextFilter  : Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade@3b6c5f54
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/error]
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Looking up handler method for path /error
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] s.b.a.e.w.s.WebMvcEndpointHandlerMapping : Did not find handler method for [/error]
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] a.e.w.s.ControllerEndpointHandlerMapping : Looking up handler method for path /error
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] a.e.w.s.ControllerEndpointHandlerMapping : Did not find handler method for [/error]
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)]
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/error] is: -1
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, text/html;q=0.8] based on Accept header types and producible media types [text/html])
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$SpelView@517289db] based on requested media type 'text/html'
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : Rendering view [org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfiguration$SpelView@517289db] in DispatcherServlet with name 'dispatcherServlet'
2018-12-28 21:22:43.128 DEBUG 13352 --- [nio-8080-exec-9] o.s.web.servlet.DispatcherServlet        : Successfully completed request

Answer 1

你需要在输入上使用@PathVariable注解来使用url模式匹配

@Controller
@RequestMapping("/trainees")
public class TraineeController {

    @GetMapping("/trainee/{id}")
    public String trainee(@PathVariable("id") String id, Model model) {
         // Your code here
    }

}

您还可以添加 logging.level.org.springframework.web=DEBUG 到您的 application.properties 以检查 spring 为您设置了哪些映射

Answer 2

是的，您需要使用 mvc 控制器制作 REST 类型的 url。这是制作 REST url 的波纹管代码。

     @Controller
     @RequestMapping("/trainees)
     @ResponseBody
     @RequestMapping(value="/update/{id}", method=RequestMethod.PUT)
      public @ResponseBody  MehodName(@PathVariable ("id") Integer id)
      {
       //write the logic of the method
       }