如何解决Spring Boot 2 数据源的配置不起作用
我有一个 application.yml(!) 用于包含以下内容的配置:
spring:
datasource:
url: "jdbc:h2:file:./camunda-h2-database"
driverClassName: "org.h2.Driver"
username: "sa"
password: ""
这给了我错误消息:
2021-03-11T17:02:48,600 WARN [main] o.s.c.s.AbstractApplicationContext: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.camunda.bpm.spring.boot.starter.CamundaBpmAutoConfiguration$ProcessEngineConfigurationImplDependingConfiguration': Unsatisfied dependency expressed through field 'processEngineConfigurationImpl'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'processEngineConfigurationImpl' defined in class path resource [org/camunda/bpm/spring/boot/starter/CamundaBpmConfiguration.class]: Unsatisfied dependency expressed through method 'processEngineConfigurationImpl' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'camundaDatasourceConfiguration': Unsatisfied dependency expressed through field 'dataSource'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'javax.sql.DataSource' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
这样做是有效的:
public DriverManagerDataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("org.h2.Driver");
dataSource.setUrl("jdbc:h2:file:./camunda-h2-database");
dataSource.setUsername("sa");
dataSource.setPassword("");
return dataSource;
}
@Bean
public PlatformTransactionManager transactionManager() {
return new DataSourceTransactionManager(dataSource());
}
想法? :-)
解决方法
将 driverClassName
重命名为 driver-class-name
,因为在 Spring Boot 自动配置属性中,Kebab 大小写优于 Camel 大小写。
如果这没有帮助,请确保您没有关闭 DataSourceAutoConfiguration
功能。它通常看起来像
@SpringBootApplication(exclude = [DataSourceAutoConfiguration::class])
public class BootApplication { ... }
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