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Алексей's questions

Martin Hope
Алексей
Asked: 2025-03-22 20:07:49 +0000 UTC
  • 5

问题是如何正确地将相同的数据传输到所有路​​由，以免写出类似这样的内容：

router.route('/home')
    .get((req, res) => res.render('home', {toast: res.flash('toast')}))
router.route('/email')
    .get((req, res) => res.render('email', {toast: res.flash('toast')}))
router.route('/contact')
    .get((req, res) => res.render('contact', {toast: res.flash('toast')}))

据我了解，在中间件级别实现这一点是正确的，但是如何实现呢？最小任务是转发到所有路由，最大任务是只获取请求

node.js
Martin Hope
Алексей
Asked: 2022-09-23 16:57:05 +0000 UTC
  • 0

有一个控制器，我在其中@GetMapping处理页面

orders/{id}/upload

实现以下功能的地方。

显示文件列表，其中包含目录中这些文件的链接

src/main/resources/static/layout/{id}/

并实现了一个多部分表单，通过该表单将文件上传到服务器到上面RestControllervia中指示的文件夹@PostMapping。

问题是：
当我将文件上传到服务器时，它会进入文件列表，但是如果我点击链接，我会收到 404 错误，尽管文件在服务器上。

我重新启动服务器并且链接开始工作（链接地址没有改变）。

告诉我可能是什么问题？

@Controller
public class OrderController {
  @GetMapping("/orders/{id}/upload")
  public String upload(@PathVariable(value = "id") long id, Model model) {
    model.addAttribute("order_number", id);
    String directory = "src/main/resources/static/layout/" + id + "/";
    File file = new File(directory);
    if (!file.exists()) {
        file.mkdirs();
    }
    File[] listFiles = file.listFiles();
    model.addAttribute("listfile", listFiles);
    return "upload";
  }
}

.

@Service
public class FileUploadService {
    public void uploadFile(MultipartFile file, long id) throws IOException {
        File uploadFile = new File("/Users/prisukhin/Documents/printing/src/main/resources/static/layout/" + id + "/" + file.getOriginalFilename());
        if(file != null) {
            file.transferTo(uploadFile);
        }
    }
}

.

@RestController
public class FileUploadRestController {

    @Autowired
    FileUploadService fileUploadService;

    @PostMapping("/orders/{id}/upload")
    public RedirectView fileUpload(@PathVariable(value = "id") long id, @RequestParam MultipartFile file_form, Model model) throws IOException {
        fileUploadService.uploadFile(file_form, id);
        return new RedirectView("/orders/{id}/upload");
    }

upload.html 文件的一部分

<table class="table table-hover">    
  <tbody th:each="l : ${listfile}">
    <tr>
      <td>
        <a th:text="${#strings.substringAfter(l, '/layout/'+order_number+'/')}" th:href="@{'../../'}+${#strings.substringAfter(l, '/static/')}" target="_blank"></a>. 
      </td>
     </tr>
  </tbody>
 </table>
 <form th:attr="action=@{'/orders/'} + ${order_number} + @{'/upload'}" method="POST" enctype="multipart/form-data" class="upload-form mx-auto">
   <div class="input-group mb-3">
     <input type="file" class="form-control" name="file_form" />
       <div class="input-group-append">
         <button class="btn btn-secondary" type="submit">Загрузить</button>
       </div>
   </div>
 </form>

白标错误页面

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Fri Sep 23 11:50:06 MSK 2022
There was an unexpected error (type=Not Found, status=404).
No message available

调试信息

2022-09-23 11:50:02.881 DEBUG 58415 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : POST "/orders/45/upload", parameters={multipart}
2022-09-23 11:50:02.947 DEBUG 58415 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.prisukhin.integral.controllers.FileUploadRestController#fileUpload(long, MultipartFile, Model)
2022-09-23 11:50:03.024 DEBUG 58415 --- [nio-8080-exec-1] o.s.web.servlet.view.RedirectView        : View [RedirectView], model {}
2022-09-23 11:50:03.038 DEBUG 58415 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed 302 FOUND
2022-09-23 11:50:03.046 DEBUG 58415 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : GET "/orders/45/upload", parameters={}
2022-09-23 11:50:03.047 DEBUG 58415 --- [nio-8080-exec-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.prisukhin.integral.controllers.OrderController#upload(long, Model)
2022-09-23 11:50:03.065 DEBUG 58415 --- [nio-8080-exec-2] o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html, application/xhtml+xml, image/avif, image/webp, image/apng, application/xml;q=0.9, application/signed-exchange;v=b3;q=0.9, */*;q=0.8]
2022-09-23 11:50:03.668 DEBUG 58415 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : GET "/css/style.css", parameters={}
2022-09-23 11:50:03.672 DEBUG 58415 --- [nio-8080-exec-4] o.s.web.servlet.DispatcherServlet        : GET "/img/logo-1.png", parameters={}
2022-09-23 11:50:03.675 DEBUG 58415 --- [nio-8080-exec-3] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler [classpath [META-INF/resources/], classpath [resources/], classpath [static/], classpath [public/], ServletContext [/]]
2022-09-23 11:50:03.675 DEBUG 58415 --- [nio-8080-exec-4] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler [classpath [META-INF/resources/], classpath [resources/], classpath [static/], classpath [public/], ServletContext [/]]
2022-09-23 11:50:03.691 DEBUG 58415 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed 200 OK
2022-09-23 11:50:03.693 DEBUG 58415 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Completed 200 OK
2022-09-23 11:50:03.728 DEBUG 58415 --- [nio-8080-exec-4] o.s.web.servlet.DispatcherServlet        : Completed 200 OK


2022-09-23 11:50:06.162 DEBUG 58415 --- [nio-8080-exec-5] **o.s.web.servlet.DispatcherServlet        : GET "/layout/45/0000005z.xml", parameters={}
2022-09-23 11:50:06.163 DEBUG 58415 --- [nio-8080-exec-5] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler [classpath [META-INF/resources/], classpath [resources/], classpath [static/], classpath [public/], ServletContext [/]]
2022-09-23 11:50:06.164 DEBUG 58415 --- [nio-8080-exec-5] o.s.w.s.r.ResourceHttpRequestHandler     : Resource not found
2022-09-23 11:50:06.165 DEBUG 58415 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet        : Completed 404 NOT_FOUND
2022-09-23 11:50:06.173 DEBUG 58415 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet        : "ERROR" dispatch for GET "/error", parameters={}
2022-09-23 11:50:06.177 DEBUG 58415 --- [nio-8080-exec-5] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#errorHtml(HttpServletRequest, HttpServletResponse)
2022-09-23 11:50:06.226 DEBUG 58415 --- [nio-8080-exec-5] o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html, text/html;q=0.8]
2022-09-23 11:50:06.229 DEBUG 58415 --- [nio-8080-exec-5] o.s.web.servlet.DispatcherServlet        : Exiting from "ERROR" dispatch, status 404**
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