如问题标题中所述，我面临问题Cannot determine embedded database driver class for database type NONE。我构建的应用程序是在Spring启动时工作正常，当我运行intellij中的代码时。
我已经关注了同一个异常的几个问题，他们建议我需要在application.properties文件中添加spring.datasource属性。我已经拥有它们并仍然面临同样的问题。当我使用intellij的工件创建jar文件然后通过以下命令运行它时，会发生此问题。
java - jar myJar.jar
我的application.properties文件
# ===============================
# = DATA SOURCE
# ===============================
spring.datasource.url = jdbc:mysql://localhost:3306/db_wssmith?useSSL=false
spring.datasource.username =
spring.datasource.password =
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
运行jar时的错误日志
ERROR org.springframework.boot.SpringApplication - Application startup failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Tomcat.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.tomcat.jdbc.pool.DataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).
答案 0 :(得分：3)
您应该从maven创建jar，为此，请转到查看，然后工具Windows / Maven项目，然后双击中的安装maven中的LifeCycle 选项。使用该命令创建的jar而不是intellij。它 应该工作。