主数据源（由于代码没有办法复制的原因，下面图片和文字不一致）

 

 

package com.xxxx.config;
 
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;
 
 
/**
 * @program: test
 * @description:
 * @author: chenzhian
 * @create: 2021-10-13 20:31:54
 * @version: 1.0
 **/
@Configuration
// 扫描 Mapper 接口并容器管理
// @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.xxx.masterdao";
    static final String MAPPER_LOCATION = "classpath:mapper/master/*.xml";
 

 
    @Bean(name = "masterDataSource")
    @Primary
    public DataSource masterDataSource() {
        return new HikariDataSource();
    }
 
    @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));
        return sessionFactory.getObject();
    }

/*
可以另外手动指定目录
*/
@Bean(name="masterMapperScannerConfigurer")
public MapperScannerConfigurer masterMapperScannerConfigurer(){
MapperScannerConfigurer configurer = new MapperScannerConfigurer();
configurer.setSqlSessionFactoryBeanName("secondSqlSessionFactory");
configurer.setBasePackage(PACKAGE);
return configurer;
}

 
}

 

 

 

 第二个数据源（由于代码没有办法复制的原因，下面图片和文字不一致）

 

 

package com.xxxx.config;
 
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;
 
 
/**
 * @program: test
 * @description:
 * @author: chenzhian
 * @create: 2021-10-13 20:31:54
 * @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 second 目录，以便跟其他数据源隔离
    static final String PACKAGE = "com.xxx.seconddao";
    static final String MAPPER_LOCATION = "classpath:mapper/second/*.xml";
 

 
    @Bean(name = "secondDataSource")
    @Primary
    public DataSource secondDataSource() {
        return new HikariDataSource();
    }
 
    @Bean(name = "secondTransactionManager")
    @Primary
    public DataSourceTransactionManager secondTransactionManager() {
        return new DataSourceTransactionManager(secondDataSource());
    }
 
    @Bean(name = "secondSqlSessionFactory")
    @Primary
    public SqlSessionFactory secondSqlSessionFactory(@Qualifier("secondDataSource") DataSource secondDataSource)
            throws Exception {
        final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(secondDataSource);
        sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
                .getResources(secondDataSourceConfig.MAPPER_LOCATION));
        return sessionFactory.getObject();
    }

　　

/*
可以另外手动指定目录
*/
@Bean(name="secondMapperScannerConfigurer")
public MapperScannerConfigurer crwalerMapperScannerConfigurer(){
MapperScannerConfigurer configurer = new MapperScannerConfigurer();
configurer.setSqlSessionFactoryBeanName("secondSqlSessionFactory");
configurer.setBasePackage(PACKAGE);
return configurer;
}

 
}

 

 

 

application.yml的配置

 

 

 

 

mybatis 配置 多个数据源 org.apache.ibatis.binding.BindingException Vakud bound statement (not found)

原因是没有配置@MapperScan ,因为我这里是多个目录，所以也要配置多个，在Application的启动上面加

@MapperScan(value{"com.xxxx","com.aaaa"})

如果上面有用到MapperScannerConfigurer 就不需要这个了。

 

 

The bean 'xxxService' could not be injected as a 'com.xxxxImpl' because it is a JDK dynamic proxy that implements:
com.xxxxService

Action:

Consider injecting the bean as one of its interfaces or forcing the use of CGLib-based proxies by setting proxyTargetClass=true on @EnableAsync and/or @EnableCaching.

原因居然是因为用到是@Resouce 来直接调用ServiceImpl，造成程序加载的时候还没有Service的Impl实现类，让程序加载的时候找不到这个类

解决方案

改成调用Service 接口，另外把@Resouce 改成 @Autowired 就可以了。

 

 

 

 

资料整理来源

 

SpringBoot和Mybatis配置多数据源连接多个数据库