This article is for children's shoes who have mastered mybatis to configure a single database . For those who have not mastered mybatis to configure a single data source, you can find other articles to make up for it
Both tests can be performed.
Integrate mybatis
Refer to the multi-data source configuration of blog
mybatis
- Create [entity], [interface class], [mapper file], [database]. Note that the name of the interface class cannot be the same
- Write the yrm file, configure [data source information], pay attention to the use of jdbcurl, not url
- Write the config class to inject [Data Source], [SqlSessionFactory], and configure the location information of [Interface File] and [Mapping File].
spring:
datasource:
bookstore:
jdbcurl: jdbc:mysql://localhost:3306/bookstore2?serverTimezone=UTC # 这个是jdbcurl不是url。
username: root
password: 1230
driver-class-name: com.mysql.cj.jdbc.Driver
test:
jdbcurl: jdbc:mysql://localhost:3306/test?serverTimezone=UTC
username: root
password: 1230
driver-class-name: com.mysql.cj.jdbc.Driver
- @MapperScan is used to specify [interface class], [SqlSession] information
- Then create the data source
- Create a SqlSession factory and configure the location of the mapping file. Note the use of this getResources method. Not getResource.
- Create a transaction management factory
package com.springboot.config;
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.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.PlatformTransactionManager;
import javax.annotation.Resources;
import javax.sql.DataSource;
/**
* @author: Zekun Fu
* @date: 2023/4/10 17:59
* @Description: 第一个数据源的配置
*/
@Configuration
// 指定接口包,数据源
@MapperScan(basePackages = "com.springboot.dto.bookstore", sqlSessionFactoryRef = "bookStoreSqlSessionFactory")
public class BookStoreDataSourceConfig {
// 指定扫描文件
private static final String MAPPER_LOCATION = "classpath*:mapper/bookStore/*.xml";
@Primary
@Bean(name = "bookStoreDataSource")
@ConfigurationProperties(prefix = "spring.datasource.bookstore")
public DataSource dataSource() {
return DataSourceBuilder.create().build();
}
/**
* 事务管理器
*/
@Bean(name = "bookStoreTransactionManager")
public PlatformTransactionManager dataSourceTransactionManager(@Qualifier("bookStoreDataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
@Primary
@Bean(name = "bookStoreSqlSessionFactory")
public SqlSessionFactory sqlSessionFactory(@Qualifier("bookStoreDataSource") DataSource dataSource) throws Exception{
final SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
sessionFactoryBean.setDataSource(dataSource);
Resource[] resources = new PathMatchingResourcePatternResolver().getResources(BookStoreDataSourceConfig.MAPPER_LOCATION);
sessionFactoryBean.setMapperLocations(resources);
return sessionFactoryBean.getObject();
}
}