Spring Boot - Thymeleaf - New project does not work - spring

Question

I need help to start a new project with spring boot.
I used spring tool suite 4 "spring starter project".
I followed all the steps of the guide correctly, but once I run localhost:8080 it tells me that it's impossible to reach the site.
In problem's section, i've 0 problems and warnings.
my pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>it.progettoThymeleaf</groupId>
<artifactId>progettoThymeleaf</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>MyNewProject</name>
<description>Nuov progetto ThymeLeaf</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-integration</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
My .log file:
!ENTRY org.eclipse.jdt.debug 2 0 2020-10-08 21:09:12.334
!MESSAGE Unable to find location of java.lang.Thread.setName() in debuggee JVM, for type java.lang.Thread
Thank you
THE NEW CONSOLE OUTPUT:
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.3.4.RELEASE)
2020-10-08 21:43:13.953 INFO 19656 --- [ restartedMain] i.p.start.MyNewProjectApplication : Starting MyNewProjectApplication on griccipw10 with PID 19656 (C:\Progetto Thymeleaf\Workspace\MyNewProject\target\classes started by gricci in C:\Progetto Thymeleaf\Workspace\MyNewProject)
2020-10-08 21:43:13.960 INFO 19656 --- [ restartedMain] i.p.start.MyNewProjectApplication : No active profile set, falling back to default profiles: default
2020-10-08 21:43:14.051 INFO 19656 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2020-10-08 21:43:14.051 INFO 19656 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2020-10-08 21:43:15.087 INFO 19656 --- [ restartedMain] faultConfiguringBeanFactoryPostProcessor : No bean named 'errorChannel' has been explicitly defined. Therefore, a default PublishSubscribeChannel will be created.
2020-10-08 21:43:15.105 INFO 19656 --- [ restartedMain] faultConfiguringBeanFactoryPostProcessor : No bean named 'taskScheduler' has been explicitly defined. Therefore, a default ThreadPoolTaskScheduler will be created.
2020-10-08 21:43:15.110 INFO 19656 --- [ restartedMain] faultConfiguringBeanFactoryPostProcessor : No bean named 'integrationHeaderChannelRegistry' has been explicitly defined. Therefore, a default DefaultHeaderChannelRegistry will be created.
2020-10-08 21:43:15.199 INFO 19656 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.integration.config.IntegrationManagementConfiguration' of type [org.springframework.integration.config.IntegrationManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2020-10-08 21:43:15.212 INFO 19656 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'integrationChannelResolver' of type [org.springframework.integration.support.channel.BeanFactoryChannelResolver] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2020-10-08 21:43:15.215 INFO 19656 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'integrationDisposableAutoCreatedBeans' of type [org.springframework.integration.config.annotation.Disposables] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2020-10-08 21:43:15.615 INFO 19656 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-10-08 21:43:15.627 INFO 19656 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-10-08 21:43:15.627 INFO 19656 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.38]
2020-10-08 21:43:15.949 INFO 19656 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-10-08 21:43:15.949 INFO 19656 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1898 ms
2020-10-08 21:43:16.267 INFO 19656 --- [ restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2020-10-08 21:43:16.283 DEBUG 19656 --- [ restartedMain] s.w.s.m.m.a.RequestMappingHandlerAdapter : ControllerAdvice beans: 0 #ModelAttribute, 0 #InitBinder, 1 RequestBodyAdvice, 1 ResponseBodyAdvice
2020-10-08 21:43:16.365 DEBUG 19656 --- [ restartedMain] s.w.s.m.m.a.RequestMappingHandlerMapping : 2 mappings in 'requestMappingHandlerMapping'
2020-10-08 21:43:16.399 DEBUG 19656 --- [ restartedMain] o.s.w.s.handler.SimpleUrlHandlerMapping : Patterns [/webjars/**, /**] in 'resourceHandlerMapping'
2020-10-08 21:43:16.408 DEBUG 19656 --- [ restartedMain] .m.m.a.ExceptionHandlerExceptionResolver : ControllerAdvice beans: 0 #ExceptionHandler, 1 ResponseBodyAdvice
2020-10-08 21:43:16.601 INFO 19656 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2020-10-08 21:43:16.751 INFO 19656 --- [ restartedMain] o.s.s.c.ThreadPoolTaskScheduler : Initializing ExecutorService 'taskScheduler'
2020-10-08 21:43:16.851 INFO 19656 --- [ restartedMain] o.s.i.endpoint.EventDrivenConsumer : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel
2020-10-08 21:43:16.852 INFO 19656 --- [ restartedMain] o.s.i.channel.PublishSubscribeChannel : Channel 'application.errorChannel' has 1 subscriber(s).
2020-10-08 21:43:16.852 INFO 19656 --- [ restartedMain] o.s.i.endpoint.EventDrivenConsumer : started bean '_org.springframework.integration.errorLogger'
2020-10-08 21:43:16.903 INFO 19656 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2020-10-08 21:43:16.923 INFO 19656 --- [ restartedMain] i.p.start.MyNewProjectApplication : Started MyNewProjectApplication in 3.491 seconds (JVM running for 6.366)
2020-10-08 21:43:20.841 INFO 19656 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-10-08 21:43:20.841 INFO 19656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2020-10-08 21:43:20.841 DEBUG 19656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Detected StandardServletMultipartResolver
2020-10-08 21:43:20.851 DEBUG 19656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : enableLoggingRequestDetails='false': request parameters and headers will be masked to prevent unsafe logging of potentially sensitive data
2020-10-08 21:43:20.851 INFO 19656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 10 ms
2020-10-08 21:43:20.881 DEBUG 19656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : GET "/home", parameters={}
2020-10-08 21:43:20.896 DEBUG 19656 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped to ResourceHttpRequestHandler ["classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/", "/"]
2020-10-08 21:43:20.900 DEBUG 19656 --- [nio-8080-exec-1] o.s.w.s.r.ResourceHttpRequestHandler : Resource not found
2020-10-08 21:43:20.901 DEBUG 19656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed 404 NOT_FOUND
2020-10-08 21:43:20.911 DEBUG 19656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : "ERROR" dispatch for GET "/error", parameters={}
2020-10-08 21:43:20.914 DEBUG 19656 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController#errorHtml(HttpServletRequest, HttpServletResponse)
2020-10-08 21:43:20.960 DEBUG 19656 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html, text/html;q=0.8]
2020-10-08 21:43:20.966 DEBUG 19656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Exiting from "ERROR" dispatch, status 404
Screen of my browser:
enter image description here
HomeController.java :
package it.progettoThymeleaf.start;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
public class HomeController {
#GetMapping("/home")
public String getHome(Model model) {
model.addAttribute("message", "Benvenuti nel mio nuovo progetto Thymeleaf!");
return "home";
}
}
home.html:
<!DOCTYPE html>
<html xmlns:th="www.thymeleaf.org">
<head>
<meta charset="ISO-8859-1">
<title>Gianluca's New Project</title>
</head>
<body>
<h1 th:text=${message}></h1>
</body>
</html>
Project package explorer screen:
enter image description here

Answer 1

Your namespace in home.html is incomplete http://www.w3.org/1999/xhtml.
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">

Answer 2

I tried to create a project on my local and faced the same issue.
I got it resolved by adding an html file under templates folder.
Basically, this is the place where your thymeleaf templates will live. Adding a screenshot.
Add this to your properties file if you want to access home page from /home
server.servlet.context-path=/home