本文记录Spring Boot连接单SQLite数据源和多SQLite数据源的一种配置方式。
单数据源
1.在pom.xml中添加相关依赖
org.xerial
sqlite-jdbc
3.21.0.1
org.mybatis.spring.boot
mybatis-spring-boot-starter
1.3.2
2.在配置文件中配置数据库和mapper.xml文件信息
# sqlite数据库配置
# 一、sqlite文件在resources目录下(仅适合只读的场景,不推荐使用)
# 1.在IDEA中运行时,sqlite文件会被复制到target下的相对路径(target/classes/dbs/MySqlite.db),修改数据时,修改的是target下的sqlite文件;
# 2.用jar包运行时,sqlite文件会被复制到缓存目录,修改的也是缓存目录下的db文件(在window 10下的缓存路径是C:\Users\${用户名}\AppData\Local\Temp\sqlite-jdbc-tmp-xxxxxxxx.db)。
# spring.datasource.url=jdbc:sqlite::resource:dbs/MySqlite.db
# 二、sqlite文件为相对路径
# 1.在IDEA中运行时,相对路径基准目录为当前项目的目录(也就是跟src的同级目录);
# 2.用jar包运行时,相对路径基准目录为jar包所在目录。
# spring.datasource.url=jdbc:sqlite:dbs/MySqlite.db
# 三、sqlite文件为绝对路径
spring.datasource.url=jdbc:sqlite:F:/dbs/MySqlite.db
# mapper.xml文件路径
mybatis.mapper-locations=classpath:mappers/*.xml
# spring的jdbc可以根据spring.datasource.url的前缀判断driver-class-name,所以spring.datasource.driver-class-name该配置可以不写
spring.datasource.driver-class-name=org.sqlite.JDBC
# sqlite默认不支持设置用户名和密码,一般是通过对sqlite文件加密进行数据保护,所以这两个配置先不配置
# spring.datasource.username=
# spring.datasource.password=
多数据源
1.在pom.xml中添加相关依赖
org.xerial
sqlite-jdbc
3.21.0.1
org.mybatis.spring.boot
mybatis-spring-boot-starter
1.3.2
com.alibaba
druid-spring-boot-starter
1.1.10
2.在配置文件中配置数据库和mapper.xml文件信息
# 第一个数据库配置
spring.datasource.first.url=jdbc:sqlite:F:/dbs/MyFirstSqlite.db
spring.datasource.first.mapper-locations=classpath:mappers/first/*.xml
# spring的jdbc可以根据spring.datasource.url的前缀判断driver-class-name,所以该配置可以不写
spring.datasource.first.driver-class-name=org.sqlite.JDBC
# spring.datasource.first.username=
# spring.datasource.first.password=
# 第二个数据库配置
spring.datasource.second.url=jdbc:sqlite:F:/dbs/MySecondSqlite.db
spring.datasource.second.mapper-locations=classpath:mappers/second/*.xml
# spring的jdbc可以根据spring.datasource.url的前缀判断driver-class-name,所以该配置可以不写
spring.datasource.second.driver-class-name=org.sqlite.JDBC
# spring.datasource.second.username=
# spring.datasource.second.password=
3.Druid配置
第一个数据库的Druid配置
package com.example.study.config;
import com.alibaba.druid.pool.DruidDataSource;
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.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.example.study.dao.first", sqlSessionTemplateRef = "firstSqlSessionTemplate")
public class DruidFirstConfig {
@Value("${spring.datasource.first.url:}")
private String url;
@Value("${spring.datasource.first.mapper-locations:}")
private String mapperLocations;
@Value("${spring.datasource.first.driver-class-name:}")
private String driverClassName;
@Value("${spring.datasource.first.username:}")
private String username;
@Value("${spring.datasource.first.password:}")
private String password;
@Bean
public DataSource firstDataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setUrl(url);
// dataSource.setUsername(username);
// dataSource.setPassword(password);
// dataSource.setDriverClassName(driverClassName);
return dataSource;
}
@Bean
public SqlSessionFactory firstSqlSessionFactory(@Qualifier("firstDataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
factoryBean.setDataSource(dataSource);
factoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(mapperLocations));
return factoryBean.getObject();
}
@Bean
public SqlSessionTemplate firstSqlSessionTemplate(@Qualifier("firstSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
return new SqlSessionTemplate(sqlSessionFactory);
}
@Bean
public DataSourceTransactionManager firstDataSourceTransactionManager(@Qualifier("firstDataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
}
第二个数据库的Druid配置
package com.example.study.config;
import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.example.study.dao.second", sqlSessionTemplateRef = "secondSqlSessionTemplate")
public class DruidSecondConfig {
@Value("${spring.datasource.second.url:}")
private String url;
@Value("${spring.datasource.second.mapper-locations:}")
private String mapperLocations;
@Value("${spring.datasource.second.driver-class-name:}")
private String driverClassName;
@Value("${spring.datasource.second.username:}")
private String username;
@Value("${spring.datasource.second.password:}")
private String password;
@Bean
public DataSource secondDataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setUrl(url);
// dataSource.setUsername(username);
// dataSource.setPassword(password);
// dataSource.setDriverClassName(driverClassName);
return dataSource;
}
@Bean
public SqlSessionFactory secondSqlSessionFactory(@Qualifier("secondDataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
factoryBean.setDataSource(dataSource);
factoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(mapperLocations));
return factoryBean.getObject();
}
@Bean
public SqlSessionTemplate secondSqlSessionTemplate(@Qualifier("secondSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
return new SqlSessionTemplate(sqlSessionFactory);
}
@Bean
public DataSourceTransactionManager secondDataSourceTransactionManager(@Qualifier("secondDataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
}