应用程序无法在Spring Boot中启动

Question

我有默认的spring应用程序，并抛出这个警告和停止工作，没有控制器和服务，这只是一个演示应用程序

WARN 9256 --- [  restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'dataSourceScriptDatabaseInitializer' defined in class path resource [org/springframework/boot/autoconfigure/sql/init/DataSourceInitializationConfiguration.class]: Unsatisfied dependency expressed through method 'dataSourceScriptDatabaseInitializer' 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$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
11:00 ERROR 9256 --- [  restartedMain] o.s.b.d.LoggingFailureAnalysisReporter   : 

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

Answer 1

如果将spring数据作为依赖项，则需要在application.properties文件中指定连接到数据库的数据源url。

Answer 2

确保您的application.properties文件中的数据是否正确填充。

spring.datasource.url=jdbc:postgresql://localhost:5432/your_database_name
spring.datasource.username=username
spring.datasource.password=password
spring.jpa.database=postgresql
spring.jpa.hibernate.ddl-auto=update