我已经成功地创建了一个弹簧启动应用程序,它使用内存中的 H2嵌入式数据库。现在我想将其更改为一个将持久化的基于文件的版本。
我已经尝试改变我的 application.properties
文件中的 spring.datasource.*
属性,它们看起来像这样:
spring.datasource.url=jdbc:h2:file:~/test;DB_CLOSE_ON_EXIT=FALSE
spring.datasource.username=test
spring.datasource.password=test
spring.datasource.driverClassName=org.h2.Driver`
似乎 Spring boot 忽略了这些设置,因为它的开始如下:
o.s.j.d.e.EmbeddedDatabaseFactory : Starting embedded database: url='jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=false', username='sa'
我的 pom.xml
包含以下可能与本文相关的依赖项:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.5.RELEASE</version>
</parent>
....
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
根据文档和一些文章,我的理解是,这种配置应该可以正常工作,但对我来说运气不佳。为了避免一些基本错误,我尝试并检查了以下内容:
@EnableAutoConfiguration
中排除自动配置dataSource
bean,其中包含注释 @Primary
、 @ConfigurationProperties(prefix = "spring.datasource")
和用 DataSourceBuilder
以编程方式设置属性的组合。这会导致与 null
类型相关的其他错误。我好像漏掉了一个关键概念什么的,有人能帮忙吗。
更新1: 从我的自动配置报告中摘录:
Positive matches:
-----------------
DataSourceAutoConfiguration matched
- @ConditionalOnClass classes found: javax.sql.DataSource,org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType (OnClassCondition)
DataSourceAutoConfiguration.DataSourceInitializerConfiguration matched
- @ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer; SearchStrategy: all) found no beans (OnBeanCondition)
DataSourceAutoConfiguration.EmbeddedConfiguration matched
- embedded database H2 detected (DataSourceAutoConfiguration.EmbeddedDataSourceCondition)
- @ConditionalOnMissingBean (types: javax.sql.DataSource,javax.sql.XADataSource; SearchStrategy: all) found no beans (OnBeanCondition)
DataSourceAutoConfiguration.JdbcTemplateConfiguration matched
- existing auto database detected (DataSourceAutoConfiguration.DataSourceAvailableCondition)
DataSourceAutoConfiguration.JdbcTemplateConfiguration#jdbcTemplate matched
- @ConditionalOnMissingBean (types: org.springframework.jdbc.core.JdbcOperations; SearchStrategy: all) found no beans (OnBeanCondition)
DataSourceAutoConfiguration.JdbcTemplateConfiguration#namedParameterJdbcTemplate matched
- @ConditionalOnMissingBean (types: org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations; SearchStrategy: all) found no beans (OnBeanCondition)
DataSourceTransactionManagerAutoConfiguration matched
- @ConditionalOnClass classes found: org.springframework.jdbc.core.JdbcTemplate,org.springframework.transaction.PlatformTransactionManager (OnClassCondition)
DataSourceTransactionManagerAutoConfiguration.TransactionManagementConfiguration matched
- @ConditionalOnMissingBean (types: org.springframework.transaction.annotation.AbstractTransactionManagementConfiguration; SearchStrategy: all) found no beans (OnBeanCondition)
H2ConsoleAutoConfiguration matched
- @ConditionalOnClass classes found: org.h2.server.web.WebServlet (OnClassCondition)
- found web application StandardServletEnvironment (OnWebApplicationCondition)
- matched (OnPropertyCondition)
HibernateJpaAutoConfiguration matched
- @ConditionalOnClass classes found: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean,org.springframework.transaction.annotation.EnableTransactionManagement,javax.persistence.EntityManager (OnClassCondition)
- found HibernateEntityManager class (HibernateJpaAutoConfiguration.HibernateEntityManagerCondition)
Negative matches:
-----------------
DataSourceAutoConfiguration.NonEmbeddedConfiguration did not match
- missing supported DataSource (DataSourceAutoConfiguration.NonEmbeddedDataSourceCondition)
`
更新2: 添加执行器并查看端点 /configprops
。这里有趣的是,我的配置已经被使用,数据库已经存在,但是当应用程序运行时,它并没有使用这个 dataSource
。
"spring.datasource.CONFIGURATION_PROPERTIES":
{"prefix":"spring.datasource",
"properties":{
"schema":null,
"data":null,
"xa":{"dataSourceClassName":null,
"properties":{}
},
"type":null,
"separator":";",
"url":"jdbc:h2:file:~/test;DB_CLOSE_ON_EXIT=FALSE",
"platform":"all",
"continueOnError":false,
"jndiName":null,
"sqlScriptEncoding":null,
"password":"******",
"name":"testdb",
"driverClassName":"org.h2.Driver",
"initialize":true,
"username":"test"
}
}