运行 jar 时无法确定数据库类型 NONE 的嵌入式数据库驱动程序类

Question

正如问题标题中提到的，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 boot 上构建的，当我在 intellij 中运行代码时工作正常。

我关注了有关同一异常的几个问题，他们建议我需要spring.datasource在 application.properties 文件中添加属性。我已经有了它们，但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，会出现此问题。 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时出现错误日志

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).

Answer 1

您应该从 Maven 创建 jar，为此，请转到顶部的“查看” ，然后转到“工具 Windows/Maven 项目”，然后双击“在Maven 的LifeCycle选项中安装”。使用该命令创建的 jar 而不是使用 intellij。它应该有效。