无法在 Thymeleaf 中打开索引页，在 Intellij IDEA 中获取 404

Question

我已经为 Spring boot 和 Thymeleaf 创建了简单的演示，但我无法打开索引页。

控制器代码：

package com.jrp.demo.web;
 
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
 
@Controller
public class HomeController {
 
    @RequestMapping(value = "/")
    public String home() {
        return "index";
    }
}

在 /src/main/resources/templates/index.html

中有索引模板

有application.properties:

server.port=9095

然后前往地址 http://localhost:9095/

出现错误：

2021-12-10 11:08:32.200 DEBUG 11124 --- [nio-9095-exec-2] o.s.web.servlet.DispatcherServlet        : GET "/", parameters={}
2021-12-10 11:08:32.200 DEBUG 11124 --- [nio-9095-exec-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to com.jrp.demo.web.HomeController#home()
2021-12-10 11:08:32.201 DEBUG 11124 --- [nio-9095-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]
2021-12-10 11:08:32.201 DEBUG 11124 --- [nio-9095-exec-2] o.s.w.servlet.view.InternalResourceView  : View name 'index', model {}
2021-12-10 11:08:32.201 DEBUG 11124 --- [nio-9095-exec-2] o.s.w.servlet.view.InternalResourceView  : Forwarding to [index]
2021-12-10 11:08:32.201 DEBUG 11124 --- [nio-9095-exec-2] o.s.web.servlet.DispatcherServlet        : "FORWARD" dispatch for GET "/index", parameters={}
2021-12-10 11:08:32.202 DEBUG 11124 --- [nio-9095-exec-2] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler [classpath [META-INF/resources/], classpath [resources/], classpath [static/], classpath [public/], ServletContext [/]]
2021-12-10 11:08:32.204 DEBUG 11124 --- [nio-9095-exec-2] o.s.w.s.r.ResourceHttpRequestHandler     : Resource not found
2021-12-10 11:08:32.204 DEBUG 11124 --- [nio-9095-exec-2] o.s.web.servlet.DispatcherServlet        : Exiting from "FORWARD" dispatch, status 404
2021-12-10 11:08:32.204 DEBUG 11124 --- [nio-9095-exec-2] o.s.web.servlet.DispatcherServlet        : Completed 404 NOT_FOUND
2021-12-10 11:08:32.204 DEBUG 11124 --- [nio-9095-exec-2] o.s.web.servlet.DispatcherServlet        : "ERROR" dispatch for GET "/error", parameters={}
2021-12-10 11:08:32.207 DEBUG 11124 --- [nio-9095-exec-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#errorHtml(HttpServletRequest, HttpServletResponse)
2021-12-10 11:08:32.220 DEBUG 11124 --- [nio-9095-exec-2] o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html, text/html;q=0.8]
2021-12-10 11:08:32.220 DEBUG 11124 --- [nio-9095-exec-2] o.s.web.servlet.DispatcherServlet        : Exiting from "ERROR" dispatch, status 404

Spring开机class是：

package com.jrp.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

}

和 pom.xml 包含 spring-boot-starter-thymeleaf 和 spring-boot-starter-web.

Answer 1

如, Intellij IDEA had outdated dependencies, so helped buttons Reload all maven projects and Generate sources and update folders for all projects.

所述

无法在 Thymeleaf 中打开索引页，在 Intellij IDEA 中获取 404

Cannot open index page in Thymeleaf, getting 404 in Intellij IDEA

java

intellij-idea

thymeleaf

spring-boot