I have got a brand new Spring project from the Spring Initializr website. I selected only the WEB dependency.

Very new to this and having trouble fixing this error or to figure out where I should really look. I’m creating a web page to load bootstrap to update. Any tips would be appreciated.

mvn clean install and mvn clean package always fails and I always get the message below:

I accidentally deleted the .m2 folder from the users folder in C drive. Now, when I try to create new spring boot project in sts. It doesn’t contain the src/main/java and src/main/test folder by default. Also, the pom.xml is giving error on parent tag with the error message

Project A has Project B as a maven dependency. project B has a @Component annotated class that extends from SpringBootServletInitializer. I don’t want to start two Spring Boot applications, but I also can’t remove this dependency.

I developed a Spring Boot (Java) backend API project and execut it with Maven and I would like to create a Dockfile for executing the project

I have been learning spring boot and in the course we use maven and the maven command was working at first but now it gives me this error.

My SpringBoot project cannot start because it integrates Flink! Prompt that the class cannot be found, But this class does exist,Packaging is also available

This error “java.lang.IllegalStateException: Failed to introspect Class [com.example.hello_world.Controller.FileUploadController] from ClassLoader [org.springframework.boot.devtools.restart.classloader.RestartClassLoader@5d967894]” occur when i use the @RestController.It’s a file upload class .And it can run if i delete the @RestController , how can i resolve it?
here are my code

I am launching a spring boot application with this controller but receved {