一、配置文件
jdk环境：1.8 配置了双数据源springboot+druid+pgsql，application.properties配置修改如下：
#当前入库主数据库
spring.primary.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.primary.datasource.driver-class-name=org.postgresql.Driver
spring.primary.datasource.url=jdbc:postgresql://localhost:5432/testdb
spring.primary.datasource.username=postgres
spring.primary.datasource.password=postgres
#
#从数据库
spring.secondary.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.secondary.datasource.driver-class-name=org.postgresql.Driver
spring.secondary.datasource.url=jdbc:postgresql://localhost:5432/postgres
spring.secondary.datasource.username=postgres
spring.secondary.datasource.password=postgres
spring.datasource.druid.initial-size=5
spring.datasource.druid.min-idle=5
spring.datasource.druid.max-active=20二、Java代码配置新增
主数据库注入
/**
* @Author yang
* @Date 2023/2/20 11:10
* @Version 1.0
*/
import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = MasterDataSourceConfig.PACKAGE, sqlSessionFactoryRef = "masterSqlSessionFactory")
public class MasterDataSourceConfig {
// 精确到master目录，以便跟其他数据源隔离
static final String PACKAGE = "com.xx.dao.master";
static final String MAPPER_LOCATION = "classpath*:com/xx/mapper/master/*.xml";
@Value("${spring.primary.datasource.url}")
private String url;
@Value("${spring.primary.datasource.username}")
private String user;
@Value("${spring.primary.datasource.password}")
private String password;
@Value("${spring.primary.datasource.driver-class-name}")
private String driverClass;
private SqlSessionFactory mSessionFactory;
@Bean(name = "masterDataSource")
@Primary
public DataSource masterDataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setDriverClassName(driverClass);
dataSource.setUrl(url);
dataSource.setUsername(user);
dataSource.setPassword(password);
return dataSource;
}
@Bean(name = "masterTransactionManager")
@Primary
public DataSourceTransactionManager masterTransactionManager() {
return new DataSourceTransactionManager(masterDataSource());
}
@Bean(name = "masterSqlSessionFactory")
@Primary
public SqlSessionFactory masterSqlSessionFactory(@Qualifier("masterDataSource") DataSource masterDataSource)
throws Exception {
final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(masterDataSource);
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources(MasterDataSourceConfig.MAPPER_LOCATION));
//开启驼峰
sessionFactory.getObject().getConfiguration().setMapUnderscoreToCamelCase(true);
this.mSessionFactory = sessionFactory.getObject();
return sessionFactory.getObject();
}
/**
* 获取主库 SessionFactory
* @return
*/
public SqlSessionFactory getMSessionFactory(){
return mSessionFactory;
}
}从数据库Java代码：
/**
* @Author yang
* @Date 2023/2/20 11:52
* @Version 1.0
*/
@Configuration
// 扫描 Mapper 接口并容器管理
@MapperScan(basePackages = SecondDataSourceConfig.PACKAGE, sqlSessionFactoryRef = "secondSqlSessionFactory")
public class SecondDataSourceConfig {
//精确到第二个数据库目录，以便跟其他数据源隔离
static final String PACKAGE = "com.xx.dao.second";
static final String MAPPER_LOCATION = "classpath*:com/xx/mapper/second/*.xml";
@Value("${spring.secondary.datasource.url}")
private String url;
@Value("${spring.secondary.datasource.username}")
private String user;
@Value("${spring.secondary.datasource.password}")
private String password;
@Value("${spring.secondary.datasource.driver-class-name}")
private String driverClass;
@Bean(name = "secondDataSource")
public DataSource clusterDataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setDriverClassName(driverClass);
dataSource.setUrl(url);
dataSource.setUsername(user);
dataSource.setPassword(password);
return dataSource;
}
@Bean(name = "secondTransactionManager")
public DataSourceTransactionManager clusterTransactionManager() {
return new DataSourceTransactionManager(clusterDataSource());
}
@Bean(name = "secondSqlSessionFactory")
public SqlSessionFactory clusterSqlSessionFactory(@Qualifier("secondDataSource") DataSource clusterDataSource)
throws Exception {
final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(clusterDataSource);
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources(SecondDataSourceConfig.MAPPER_LOCATION));
//开启驼峰
sessionFactory.getObject().getConfiguration().setMapUnderscoreToCamelCase(true);
return sessionFactory.getObject();
}
}
三、mapper接口、mybatis/xml文件配置
这里就就不一一贴代码了，主要是接口对应mybatis xml配置文件。项目文件接口如下：
创建成以上目录就可以了，分别是dao接口、Java数据源配置、mybatis映射文件。
四、怎么使用
通过以上配置文件和代码已经对两个数据源进行分割，直接正常使用访问代码即可，比如dao里面创建了testClass的操作
void insert(Test test); void delete(); Controller层我们通过@Autowired注解 使用就可以了。
这里需要注意修改：
@MapperScan里面的basePackages文章来源：https://www.toymoban.com/news/detail-682267.html
MAPPER_LOCATION变量的配置，这里主要是不同的数据源配置扫描不同的mybatis配置文件文章来源地址https://www.toymoban.com/news/detail-682267.html
到了这里，关于SpringBoot+mybatis+pgsql多个数据源配置的文章就介绍完了。如果您还想了解更多内容，请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章，希望大家以后多多支持TOY模板网！
