Several ways for Springboot to start maven and gradle projects

How to start maven project

1. Run the startup class directly
2. Run with mvn spring-boot:run
3. After packaging into a jar package, use java -jar xxx.jar to run
4. After packaging into a war package, use java -jar xxx.war to run

Method 1: Run the startup class directly

方式2：mvn spring-boot:run

The pom.xml file of the springboot project contains by default:

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

So you can use the following method to run graphically.
Click on the small window in the lower left corner, and then Mavne Projects will appear on the right
. Find your springboot project in Mavne Projects, and then click spring-boot:run

or run with the command line:
first enter springboot Project directory, and then run the mvn spring-boot:run command

Pack it into a jar package and run

The default packaging form in the pom.xml file of the springboot project is a jar package

<packaging>jar</packaging>

The packaging method is as follows:

1. Graphical packaging
   
2. Command line packaging
   Enter the springboot project directory, and then run the mvn package command to
   run the jar package:
   Maven is packaged in the target directory by default, enter the target directory of the springboot project, and then run the java -jar xxx.jar command to run the program.
   
   Pack it into a war package and run
   Modify the packaging form in the pom.xml file of the springboot project to be a war package

<packaging>war</packaging>

The subsequent packaging method and running method are similar to the packaged jar package operation, the only difference is that the running command is in the form of java -jar xxx.war.

Gradle project startup method

1. java -jar xxx.jar

2. Run as "java Application"

3. gradlew bootRun, run with the version of gradle wrapper;

4. gradle bootRun, run with the local gradle version.