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在 spring boot 我的项目中配置多个数据源的情景在开发中常常会遇见,本文以 Spring Boot + MyBatis 的形式实现 mysql + Postgresql 双数据源我的项目搭建,具体具体代码请参考:
https://gitee.com/senn-wen/my…
一、依赖配置
在 pom.xml 文件中引入 postgresql
和 mysql
的驱动文件。
<dependency> | |
<groupId>org.postgresql</groupId> | |
<artifactId>postgresql</artifactId> | |
<scope>runtime</scope> | |
</dependency> | |
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> | |
<dependency> | |
<groupId>mysql</groupId> | |
<artifactId>mysql-connector-java</artifactId> | |
<scope>runtime</scope> | |
</dependency> |
二、Spring boot 配置
2.1 application.yml 配置
配置须要连贯的数据库连贯参数,上面的样例配置了 postgresql 和 mysql,因为我抉择了 hikariCP 作为连接池,因而在上面配置了下 hikari,如果是线上的服务倡议依据理论的服务器性能大小设置好该参数。记住你连贯参数的配置门路,后续要应用到。
spring: | |
datasource: | |
postgresql: | |
driver-class-name: org.postgresql.Driver | |
url: jdbc:postgresql://url:port/database | |
username: postGIS | |
password: postGIS | |
mysql: | |
driver-class-name: com.mysql.cj.jdbc.Driver | |
url: jdbc:mysql://url:port/database | |
username: root | |
password: root | |
hikari: | |
maximum-pool-size: 3 | |
connection-timeout: 500 |
2.2 排除 Spring datasource 自动化配置依赖
因为 Spring Boot 会进行主动拆卸你的配置,为了使你自定义配置失效,需要在 @SpringBootApplication 中排除掉和 datasoure 相干的配置。次要有三个:
- 数据源:DataSourceAutoConfiguration.class
- 事务:DataSourceTransactionManagerAutoConfiguration.class
- Jdbc 模板:JdbcTemplateAutoConfiguration.class
@SpringBootApplication(exclude = { | |
DataSourceAutoConfiguration.class, | |
DataSourceTransactionManagerAutoConfiguration.class, | |
JdbcTemplateAutoConfiguration.class | |
}) | |
public class PostgresqlApplication {public static void main(String[] args) {SpringApplication.run(PostgresqlApplication.class, args); | |
} | |
} |
三、数据源配置
做完以上根底配置后,就须要配置具体的 Bean 了,每个数据源的倡议独立配置便于前期保护。数据源配置要经验两个次要的步骤:
- 源数据的配置(读取配置文件、生成新的 DataSource)
- 指定 ORM 框架在什么中央应用该数据源
这两个是框架无奈赋予你的,只能手动配置。
3.1 MySQL 数据源配置
package com.senn.postgresql.config; | |
import com.zaxxer.hikari.HikariDataSource; | |
import lombok.extern.slf4j.Slf4j; | |
import org.apache.ibatis.session.SqlSessionFactory; | |
import org.mybatis.spring.SqlSessionFactoryBean; | |
import org.mybatis.spring.SqlSessionTemplate; | |
import org.mybatis.spring.annotation.MapperScan; | |
import org.springframework.beans.factory.annotation.Qualifier; | |
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties; | |
import org.springframework.boot.context.properties.ConfigurationProperties; | |
import org.springframework.context.annotation.Bean; | |
import org.springframework.context.annotation.Configuration; | |
import org.springframework.context.annotation.DependsOn; | |
import org.springframework.context.annotation.Primary; | |
import org.springframework.jdbc.datasource.DataSourceTransactionManager; | |
import javax.sql.DataSource; | |
/** | |
* @author senn | |
* @version 1.0.0 | |
* @ClassName MsqlDataSourceConfig.java | |
* @Description mysql 数据库配置 | |
* @createTime 2021 年 01 月 15 日 09:02:00 | |
*/ | |
@Configuration | |
@Slf4j | |
@MapperScan(basePackages = "com.senn.postgresql.common.mapper.mysql", | |
sqlSessionFactoryRef = "mysqlDataSourceFactory") | |
public class MsqlDataSourceConfig { | |
/** | |
* @description mysql DataSource Properties 配置 | |
* @updateTime 2021/1/15 9:04 | |
*/ | |
@Bean(name = "mysqlDataSourceProperties") | |
@ConfigurationProperties("spring.datasource.mysql") | |
public DataSourceProperties mysqlDataSourceProperties() {return new DataSourceProperties(); | |
} | |
/** | |
* @description mysql DataSource 源配置 | |
* @updateTime 2021/1/15 9:11 | |
*/ | |
@Bean(name = "mysqlDataSource") | |
@ConfigurationProperties("spring.datasource.mysql.configuration") | |
public javax.sql.DataSource mysqlDataSource() {DataSourceProperties dataSourceProperties = mysqlDataSourceProperties(); | |
log.info(dataSourceProperties.getUrl()); | |
// 数据库连接池设置为 Hikari | |
return mysqlDataSourceProperties().initializeDataSourceBuilder().type(HikariDataSource.class).build();} | |
// 以下内容和 mybatis 相干 | |
/** | |
* @description mysql 工厂配置 | |
* @updateTime 2021/1/15 9:18 | |
*/ | |
@Bean("mysqlDataSourceFactory") | |
@DependsOn("mysqlDataSource") | |
public SqlSessionFactory dataSourceFactory() throws Exception {SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean(); | |
factoryBean.setDataSource(mysqlDataSource()); | |
return factoryBean.getObject();} | |
/** | |
* @description mysql session 模板配置 | |
* @updateTime 2021/1/15 9:22 | |
*/ | |
@Bean("mysqlSqlSessionTemplate") | |
@DependsOn("mysqlDataSourceFactory") | |
public SqlSessionTemplate sqlSessionTemplate(@Qualifier("mysqlDataSourceFactory") SqlSessionFactory sessionFactory) {return new SqlSessionTemplate(sessionFactory); | |
} | |
/** | |
* @description mysql 事务配置 | |
* @updateTime 2021/1/15 9:22 | |
*/ | |
@Bean(name = "mysqlTransactionManager") | |
@DependsOn("mysqlDataSource") | |
public DataSourceTransactionManager mysqlTransactionManager(@Qualifier("mysqlDataSource") DataSource dataSource) {return new DataSourceTransactionManager(dataSource); | |
} | |
} |
Postgresql 数据源配置
package com.senn.postgresql.config; | |
import com.zaxxer.hikari.HikariDataSource; | |
import lombok.extern.slf4j.Slf4j; | |
import org.apache.ibatis.session.SqlSessionFactory; | |
import org.mybatis.spring.SqlSessionFactoryBean; | |
import org.mybatis.spring.SqlSessionTemplate; | |
import org.mybatis.spring.annotation.MapperScan; | |
import org.springframework.beans.factory.annotation.Qualifier; | |
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties; | |
import org.springframework.boot.context.properties.ConfigurationProperties; | |
import org.springframework.context.annotation.Bean; | |
import org.springframework.context.annotation.Configuration; | |
import org.springframework.context.annotation.DependsOn; | |
import org.springframework.context.annotation.Primary; | |
import org.springframework.jdbc.datasource.DataSourceTransactionManager; | |
import javax.sql.DataSource; | |
/** | |
* @author senn | |
* @version 1.0.0 | |
* @ClassName DataSourceConfig.java | |
* @Description psotgresql 数据库配置 | |
* @createTime 2021 年 01 月 14 日 15:56:00 | |
*/ | |
@Configuration | |
@Slf4j | |
@MapperScan(basePackages = "com.senn.postgresql.common.mapper.postgresql", | |
sqlSessionFactoryRef = "postgresqlDataSourceFactory") | |
public class PostgresqlDataSourceConfig { | |
/** | |
* @description postgresql DataSource Properties 配置 | |
* @updateTime 2021/1/15 9:04 | |
*/ | |
@Bean(name = "postgresqlDataSourceProperties") | |
@ConfigurationProperties("spring.datasource.postgresql") | |
public DataSourceProperties postgresqlDataSourceProperties() {return new DataSourceProperties(); | |
} | |
/** | |
* @description postgresql DataSource 源配置 | |
* @param | |
* @updateTime 2021/1/15 9:11 | |
* @throws | |
*/ | |
@Bean(name = "postgresqlDataSource") | |
@ConfigurationProperties("spring.datasource.postgresql.configuration") | |
public DataSource postgresqlDataSource() {DataSourceProperties dataSourceProperties = postgresqlDataSourceProperties(); | |
log.info(dataSourceProperties.getUrl()); | |
// 数据库连接池设置为 Hikari | |
return postgresqlDataSourceProperties().initializeDataSourceBuilder().type(HikariDataSource.class).build();} | |
// 以下内容和 mybatis 相干 | |
/** | |
* @description postgresql 工程配置 | |
* @updateTime 2021/1/15 9:18 | |
*/ | |
@Bean("postgresqlDataSourceFactory") | |
@DependsOn("postgresqlDataSource") | |
public SqlSessionFactory dataSourceFactory() throws Exception {SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean(); | |
factoryBean.setDataSource(postgresqlDataSource()); | |
return factoryBean.getObject();} | |
/** | |
* @description postgresql session 模板配置 | |
* @updateTime 2021/1/15 9:22 | |
*/ | |
@Bean("postgresqlSqlSessionTemplate") | |
@Primary | |
@DependsOn("postgresqlDataSourceFactory") | |
public SqlSessionTemplate sqlSessionTemplate(@Qualifier("postgresqlDataSourceFactory") SqlSessionFactory sessionFactory) {return new SqlSessionTemplate(sessionFactory); | |
} | |
/** | |
* @description postgresql 事务配置 | |
* @updateTime 2021/1/15 9:22 | |
*/ | |
@Bean(name = "postgresqlTransactionManager") | |
@DependsOn("postgresqlDataSource") | |
public DataSourceTransactionManager fawkesTransactionManager(@Qualifier("postgresqlDataSource") DataSource dataSource) {return new DataSourceTransactionManager(dataSource); | |
} | |
} |
@Senn · 森
正文完