First use the command line to generate a keystore file:

keytool -genkey -alias tomcat -keyalg RSA -keystore ./jerry.keystore

Save to local project folder:

The application.properties file in Springboot is maintained as follows:

server.port=5031

server.ssl.key-store=jerry.keystore

server.ssl.key-alias=tomcat

server.ssl.enabled=true

server.ssl.key-store-password=123456

server.ssl.key-store-type=JKS

The HTTPS protocol takes effect:

You can see that the certificate used is indeed the one I just created from the command line:

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