There's a ghost code in the boot spring What's the problem? - spring

Question

I'm Java Boots Spring, Maven
In the spring,
We added jpa and Thymereaf as dependencies.
And I ran.
However, the working http://localhost:8080/ was disconnected and an error occurred.
The same was true of other dependencies added.
So I deleted it again from pom.xml.
However, the local host did not work again.
And I found something strange in the class I added.
I annotated it, but it didn't work.
The controller worked after deleting the class code.
Even if I deleted the class, the controller worked.
This is a ghost code.
And this is an added class.
/*
package com.team2.crowdfunding.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
#Controller
public class MemberController {
#GetMapping("/save")
public String saveForm() {
return "/user/save";
}
#GetMapping("/")
public String saveForm2() {
System.out.println("겟 처음");
return "/index";
}
}
*/
And this is the spring that outputs.
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.7.5)
2022-11-29 16:01:17.947 INFO 19648 --- [ restartedMain] c.t.c.CrowdfundingApplication : Starting CrowdfundingApplication using Java 18.0.2.1 on DESKTOP-TMFMLDT with PID 19648 (C:\Users\bitcamp\IdeaProjects\crowdfunding2\target\classes started by bitcamp in C:\Users\bitcamp\IdeaProjects\crowdfunding2)
2022-11-29 16:01:17.948 INFO 19648 --- [ restartedMain] c.t.c.CrowdfundingApplication : No active profile set, falling back to 1 default profile: "default"
2022-11-29 16:01:17.988 INFO 19648 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2022-11-29 16:01:17.988 INFO 19648 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2022-11-29 16:01:18.463 WARN 19648 --- [ restartedMain] o.m.s.mapper.ClassPathMapperScanner : No MyBatis mapper was found in '[com.team2.crowdfunding]' package. Please check your configuration.
2022-11-29 16:01:18.812 INFO 19648 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2022-11-29 16:01:18.821 INFO 19648 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2022-11-29 16:01:18.821 INFO 19648 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.68]
2022-11-29 16:01:18.994 INFO 19648 --- [ restartedMain] org.apache.jasper.servlet.TldScanner : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2022-11-29 16:01:18.998 INFO 19648 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2022-11-29 16:01:18.999 INFO 19648 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1010 ms
2022-11-29 16:01:19.203 INFO 19648 --- [ restartedMain] f.a.AutowiredAnnotationBeanPostProcessor : Autowired annotation should only be used on methods with parameters: public org.springframework.security.crypto.password.PasswordEncoder com.team2.crowdfunding.controller.UserController.passwordEncoder()
2022-11-29 16:01:19.322 INFO 19648 --- [ restartedMain] o.s.b.a.w.s.WelcomePageHandlerMapping : Adding welcome page: ServletContext resource [/index.html]
2022-11-29 16:01:19.452 INFO 19648 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2022-11-29 16:01:19.483 INFO 19648 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2022-11-29 16:01:19.491 INFO 19648 --- [ restartedMain] c.t.c.CrowdfundingApplication : Started CrowdfundingApplication in 1.81 seconds (JVM running for 2.124)
2022-11-29 16:01:22.123 INFO 19648 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet'
2022-11-29 16:01:22.123 INFO 19648 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet'
2022-11-29 16:01:22.124 INFO 19648 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 1 ms
What's the problem?
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