多数据源配置
项目结构
最近项目用到了多数据源，在此处记录一下具体的配置信息。
目前是两个数据库，paas 和 robot，根据数据库，将项目的包结构分为如下图所示，方便管理及后期维护。
项目配置
主配置文件 application.properties
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#连接池配置
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driverClassName=com.mysql.jdbc.Driver
#robot库
spring.datasource.robot.url=jdbc:mysql://localhost:3306/robot?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true
spring.datasource.robot.username=root
spring.datasource.robot.password=
spring.datasource.robot.initialSize=1
spring.datasource.robot.maxActive=20
spring.datasource.robot.minIdle=1
spring.datasource.robot.maxWait=60000
spring.datasource.robot.timeBetweenEvictionRunsMillis=60000
spring.datasource.robot.minEvictableIdleTimeMillis=300000
spring.datasource.robot.validationQuery=select 1
spring.datasource.robot.testWhileIdle=true
#pass库
spring.datasource.paas.url=jdbc:mysql://localhost:3306/paas?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true
spring.datasource.paas.username=root
spring.datasource.paas.password=
spring.datasource.paas.initialSize=1
spring.datasource.paas.maxActive=20
spring.datasource.paas.minIdle=1
spring.datasource.paas.maxWait=60000
spring.datasource.paas.timeBetweenEvictionRunsMillis=60000
spring.datasource.paas.minEvictableIdleTimeMillis=300000
spring.datasource.paas.validationQuery=select 1
spring.datasource.paas.testWhileIdle=true
#实体类扫描路径
mybatis.type-aliases-package=com.huayunworld.parser.flowChart.model.db
#mybatis配置文件路径
mybatis.config-location=classpath:mybatis-config.xml
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数据源robot配置
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@MapperScan(basePackages = "com.huayunworld.parser.flowChart.dao.robot", sqlSessionFactoryRef = "robotSqlSessionFactory")
public class {
private static final String MAPPER = "classpath:mapping/robot/*.xml";
@ConfigurationProperties("spring.datasource.robot")
@Primary
@Bean(name = "robotDataSource")
public DruidDataSource robotDataSource() {
return new DruidDataSource();
}
@Bean(name = "robotTransactionManager")
@Primary
public DataSourceTransactionManager robotTransactionManager() {
return new DataSourceTransactionManager(robotDataSource());
}
@Bean(name = "robotSqlSessionFactory")
@Primary
public SqlSessionFactory masterSqlSessionFactory(@Qualifier("robotDataSource") DataSource dataSource) throws Exception {
final SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
sessionFactoryBean.setDataSource(dataSource);
sessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(MAPPER));
return sessionFactoryBean.getObject();
}
}
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数据源paas配置
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@MapperScan(basePackages = "com.huayunworld.parser.flowChart.dao.paas", sqlSessionFactoryRef = "paasSqlSessionFactory")
public class PaasDruidConfig {
private static final String MAPPER = "classpath:mapping/paas/*.xml";
@ConfigurationProperties("spring.datasource.paas")
@Bean(name = "paasDataSource")
public DruidDataSource paasDataSource() {
return new DruidDataSource();
}
@Bean(name = "paasTransactionManager")
public DataSourceTransactionManager masterTransactionManager() {
return new DataSourceTransactionManager(paasDataSource());
}
@Bean(name = "paasSqlSessionFactory")
public SqlSessionFactory masterSqlSessionFactory(@Qualifier("paasDataSource") DataSource dataSource) throws Exception {
final SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
sessionFactoryBean.setDataSource(dataSource);
sessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(MAPPER));
return sessionFactoryBean.getObject();
}
}
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测试
使用时，与之前的mybatis的使用方法一样，直接注入dao层对象即可。spring会根据不同包下的dao，连接不同的数据库。
测试代码：
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@RunWith(SpringRunner.class)
@SpringBootTest(classes = RbcParserApplication.class)
@Transactional
public class RbcParserApplicationTests {
@Resource
private AttrMapper attrMapper;
@Resource
private CallRecBotMapper callRecBotMapper;
@Test
public void allDataSourceSelectTest() {
System.out.println(attrMapper.selectAllData());
System.out.println(callRecBotMapper.selectAllData());
}
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输出结果：
通过测试可以看出，两个库分别连接成功了。
原文:大专栏 springboot mybatis druid多数据源配置