dia 2: ejemplo archivo de conexion de mysql

src/main/resources/application.properties

+spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration
+
+/*   archivo de conexion mysql 
+spring.datasource.url=jdbc:mysql://localhost:3306/spring
+spring.datasource.username=root
+spring.datasource.password=
+spring.datasource.driver-class-name=com.mysql.jdbc.Driver
+
+# Keep the connection alive if idle for a long time (needed in production)
+spring.datasource.testWhileIdle = true
+spring.datasource.validationQuery = SELECT 1
+
+# Show or not log for each sql query
+spring.jpa.show-sql = true
+
+# Hibernate ddl auto (create, create-drop, update)
+spring.jpa.hibernate.ddl-auto = update
+
+# Naming strategy
+spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
+
+# Use spring.jpa.properties.* for Hibernate native properties (the prefix is
+# stripped before adding them to the entity manager)
+
+# The SQL dialect makes Hibernate generate better SQL for the chosen database
+spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
+*/
\ No newline at end of file