java - HTTP 状态 404 – 未找到 : for controller - no view resolvers found in Idea

Question

我有以下 Spring MVC 代码:

配置文件:

public class MainWebAppInitializer implements WebApplicationInitializer {
    @Override
    public void onStartup(final ServletContext sc) throws ServletException {

        AnnotationConfigWebApplicationContext root =
                new AnnotationConfigWebApplicationContext();

        root.register(WebConfig.class);
        root.setServletContext(sc);

        root.scan("testspring");
        sc.addListener(new ContextLoaderListener(root));

        ServletRegistration.Dynamic appServlet =
                sc.addServlet("dispatcher", new DispatcherServlet(new GenericWebApplicationContext()));
        appServlet.setLoadOnStartup(1);
        appServlet.addMapping("/");
    }
}

@EnableWebMvc
@Configuration
@ComponentScan("testspring")
public class WebConfig extends WebMvcConfigurerAdapter {
/*
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/").setViewName("index");
    }*/

    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver bean = new InternalResourceViewResolver();

        bean.setViewClass(JstlView.class);
        bean.setPrefix("/WEB-INF/view/");
        bean.setSuffix(".html");

        return bean;
    }
}

Controller :

@Controller
public class HomeController {
    @RequestMapping(value = "/")
    public String home() {
        System.out.println("HHomeController: Passing through...");
        return "home.html";
    }
}

@RestController
public class TestRestController {
    @RequestMapping(value = "/api")
    public String home() {
        System.out.println("Rest: Passing through...");
        return "some json";
    }
}

部署时出现以下错误:

但是，访问 /api 页面效果很好。

编辑:

将 home.html 替换为 home 后，错误仍然存​​在 - 在 IDE 中和浏览器中的 404 中:

也许它是相关的 - 我在其中一个配置类中弹出此消息:

Answer 1

删除 .html 只需返回引用中的 View ，如下所示:“home”