title: Spring : Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured
body: <p>My application.properties is : </p>
  
  <pre><code>spring.datasource.url=jdbc:mysql://localhost:3306/bdd_disc?useUnicode=true&amp;useJDBCCompliantTimezoneShift=true&amp;useLegacyDatetimeCode=false&amp;serverTimezone=UTC
  spring.datasource.username=root
  spring.datasource.password=MP18711922
  spring.datasource.testWhileIdle = true
  spring.datasource.validationQuery = SELEC 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
  
  spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
  </code></pre>
  
  <p>When I make a maven Build and try to run the main SpringBoot class I have the following message :</p>
  
  <pre><code>Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
  </code></pre>