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java - 尝试从控制器返回 html 页面时找不到资源

问题描述

我无法在 springboot 中呈现 html 页面。这是代码...

@RestController
    public class ProductController {
        @Autowired
        ProductService service;
    
        @InitBinder
        public void initBinder(WebDataBinder webDataBinder) {
            SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");
            dateFormat.setLenient(false);
            webDataBinder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
        }
        
        @RequestMapping(value = { "/", "/home" })
        public ModelAndView home() {
            System.out.println("sdasasas");
            return new ModelAndView("home");
        }

但是每当我点击 http://localhost:8080/home 时，它​​都会显示以下日志

-8080-exec-4] o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html, application/xhtml+xml, image/webp, image/apng, application/signed-exchange;v=b3, application/xml;q=0.9,*/*;q=0.8]
2019-07-31 16:05:25.354 DEBUG 14850 --- [nio-8080-exec-4] o.s.w.servlet.view.InternalResourceView  : View name 'home', model {}
2019-07-31 16:05:25.354 DEBUG 14850 --- [nio-8080-exec-4] o.s.w.servlet.view.InternalResourceView  : Forwarding to [/WEB-INF/html/home.html]
2019-07-31 16:05:25.354 DEBUG 14850 --- [nio-8080-exec-4] o.s.web.servlet.DispatcherServlet        : "FORWARD" dispatch for GET "/WEB-INF/html/home.html", parameters={}
2019-07-31 16:05:25.356 DEBUG 14850 --- [nio-8080-exec-4] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/","/"]
2019-07-31 16:05:25.356  WARN 14850 --- [nio-8080-exec-4] o.s.w.s.r.ResourceHttpRequestHandler     : Path with "WEB-INF" or "META-INF": [WEB-INF/html/home.html]
2019-07-31 16:05:25.356 DEBUG 14850 --- [nio-8080-exec-4] o.s.w.s.r.ResourceHttpRequestHandler     : Resource not found
2019-07-31 16:05:25.357 DEBUG 14850 --- [nio-8080-exec-4] o.s.web.servlet.DispatcherServlet        : Exiting from "FORWARD" dispatch, status 404
2019-07-31 16:05:25.357 DEBUG 14850 --- [nio-8080-exec-4] o.j.s.OpenEntityManagerInViewInterceptor : Closing JPA EntityManager in OpenEntityManagerInViewInterceptor
2019-07-31 16:05:25.357 DEBUG 14850 --- [nio-8080-exec-4] o.s.web.servlet.DispatcherServlet        : Completed 404 NOT_FOUND
2019-07-31 16:05:25.357 DEBUG 14850 --- [nio-8080-exec-4] o.s.web.servlet.DispatcherServlet        : "ERROR" dispatch for GET "/error", parameters={}

标签： javaspring-boot

解决方案

@Controller在使用 Spring MVC 时， 您应该始终使用Annotation。@RestController不同于@Controller.

@Controller返回一个视图，用于 MVC 应用程序，

在@RestController返回响应（主要是 Json）时，它使用 Jackson jar 将您的 java 对象转换为 Json，这些用于 api。

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