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                ```xml <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> ``` ```yaml spring: datasource: username: root password: 123456 url: jdbc:mysql://192.168.15.22:3306/jdbc driver-class-name: com.mysql.jdbc.Driver ``` 效果: ? 默認是用org.apache.tomcat.jdbc.pool.DataSource作為數據源; ? 數據源的相關配置都在DataSourceProperties里面; 自動配置原理: org.springframework.boot.autoconfigure.jdbc: 1、參考DataSourceConfiguration,根據配置創建數據源,默認使用Tomcat連接池;可以使用spring.datasource.type指定自定義的數據源類型; 2、SpringBoot默認可以支持; ``` org.apache.tomcat.jdbc.pool.DataSource、HikariDataSource、BasicDataSource、 ``` 3、自定義數據源類型 ```java /** * Generic DataSource configuration. */ @ConditionalOnMissingBean(DataSource.class) @ConditionalOnProperty(name = "spring.datasource.type") static class Generic { @Bean public DataSource dataSource(DataSourceProperties properties) { //使用DataSourceBuilder創建數據源,利用反射創建響應type的數據源,并且綁定相關屬性 return properties.initializeDataSourceBuilder().build(); } } ``` 4、**DataSourceInitializer:ApplicationListener**; ? 作用: ? 1)、runSchemaScripts();運行建表語句; ? 2)、runDataScripts();運行插入數據的sql語句; 默認只需要將文件命名為: ```properties schema-*.sql、data-*.sql 默認規則:schema.sql,schema-all.sql; 可以使用 schema: - classpath:department.sql 指定位置 ``` 5、操作數據庫:自動配置了JdbcTemplate操作數據庫
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