一、注解包下的java配置文件
package config; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Import; import org.springframework.context.annotation.PropertySource; import org.springframework.transaction.annotation.EnableTransactionManagement; /** * spring的配置类，相当于bean.xml */ @Configuration @ComponentScan("com.itheima") @Import({JdbcConfig.class,TransactionConfig.class}) @PropertySource("jdbcConfig.properties") @EnableTransactionManagement public class SpringConfiguration { }
package config; import org.springframework.context.annotation.Bean; import org.springframework.jdbc.datasource.DataSourceTransactionManager; import org.springframework.transaction.PlatformTransactionManager; import javax.sql.DataSource; /** * 和事务相关的配置类 */ public class TransactionConfig { /** * 用于创建事务管理器对象 * @param dataSource * @return */ @Bean(name="transactionManager") public PlatformTransactionManager createTransactionManager(DataSource dataSource){ return new DataSourceTransactionManager(dataSource); } }
package config; import org.springframework.context.annotation.Bean; import org.springframework.jdbc.datasource.DataSourceTransactionManager; import org.springframework.transaction.PlatformTransactionManager; import javax.sql.DataSource; /** * 和事务相关的配置类 */ public class TransactionConfig { /** * 用于创建事务管理器对象 * @param dataSource * @return */ @Bean(name="transactionManager") public PlatformTransactionManager createTransactionManager(DataSource dataSource){ return new DataSourceTransactionManager(dataSource); } }
package config; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.datasource.DriverManagerDataSource; import javax.sql.DataSource; /** * 和连接数据库相关的配置类 */ public class JdbcConfig { @Value("${jdbc.driver}") private String driver; @Value("${jdbc.url}") private String url; @Value("${jdbc.username}") private String username; @Value("${jdbc.password}") private String password; /** * 创建JdbcTemplate * @param dataSource * @return */ @Bean(name="jdbcTemplate") public JdbcTemplate createJdbcTemplate(DataSource dataSource){ return new JdbcTemplate(dataSource); } /** * 创建数据源对象 * @return */ @Bean(name="dataSource") public DataSource createDataSource(){ DriverManagerDataSource ds = new DriverManagerDataSource(); ds.setDriverClassName(driver); ds.setUrl(url); ds.setUsername(username); ds.setPassword(password); return ds; } }
二、数据配置文件，文件位于resources文件路径下jdbcConfig.properties
jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/eesy jdbc.username=root jdbc.password=root
三、测试文件引入
@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(classes= SpringConfiguration.class)
