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This article introduces the relevant knowledge of "how to store SpringBoot MainApplication files". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Location of the MainApplication class file

There is a main program entry class when building a SpringBoot project.

The MainApp class must be placed in the root directory of the entire project, and Spring scans all Class under the package where the file is located when scanning for comments.

If other classes are placed higher than this class or other directory, they will not be scanned.

Import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;/** * @ SpringBootApplication marks a main program class. This means that this is a SpringBoot application * / @ SpringBootApplicationpublic class ProMainApplication {public static void main (String [] args) {/ / make the SpringBoot application run SpringApplication.run (ProMainApplication.class,args);}} be sure to pay attention to the location of the startup class.

When we first come into contact with the spring-boot project, we may encounter the problem that the spring-boot project starts normally but accesses resources at 404.

At this point, we need to check the location of the startup class. Because the default scan location for @ SpringBootApplication is the same level directory and subdirectory where Application is located.

So, we're going to put the startup class, and controller,service... Wait for the bag to be put under the same bag.

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