场景

同事要用SqlServer写一个小项目，但是有个问题就是他们的数据需要存到多个数据库中，其中两个库的名字是account和game，不知道怎么处理切换，然后我这边写了个测试暂时没有问题，求大神指教

SpringBoot配置文件

#连接sqlserver数据库
spring.datasource.account.jdbc-url=jdbc:sqlserver://172.16.10.2:1433;DatabaseName=account
spring.datasource.account.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.account.username=sa
spring.datasource.account.password=plo#@!


spring.datasource.game.jdbc-url=jdbc:sqlserver://172.16.10.2:1433;DatabaseName=game
spring.datasource.game.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.game.username=sa
spring.datasource.game.password=plo#@!

自定义配置文件

package org.geemp.game.config;

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.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.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;

/**
 * @author JackRen
 * @date 2021-12-01 14:14
 * @description:
 */

@Configuration
@MapperScan(basePackages= {"org.geemp.game.account"},sqlSessionFactoryRef="gameSqlSessionFactory")
public class DataSourceAccountConfig {

    @Bean(name="accountDataSource")
    @ConfigurationProperties(prefix="spring.datasource.account")
    public DataSource accountDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name="accountSqlSessionFactory")
    @Primary
    public SqlSessionFactory accountSqlSessionFactory(@Qualifier("accountDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean=new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        return bean.getObject();
    }
    @Bean(name="accountTransactionManager")//配置事务
    @Primary
    public DataSourceTransactionManager accountTransactionManager(@Qualifier("accountDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }
    @Bean(name="accountSqlSessionTemplate")
    @Primary
    public SqlSessionTemplate accountSqlSessionTemplate(@Qualifier("accountSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

}

package org.geemp.game.config;

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.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.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;

/**
 * @author JackRen
 * @date 2021-12-01 14:15
 * @description:
 */

@Configuration
@MapperScan(basePackages= {"org.geemp.game.gm"},sqlSessionFactoryRef="gameSqlSessionFactory")
public class DataSourceGameConfig {

    @Bean(name="gameDataSource")
    @ConfigurationProperties(prefix="spring.datasource.game")
    public DataSource gameDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name="gameSqlSessionFactory")
    public SqlSessionFactory gameSqlSessionFactory(@Qualifier("gameDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean=new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        return bean.getObject();
    }
    @Bean(name="gameTransactionManager")//配置事务
    public DataSourceTransactionManager gameTransactionManager(@Qualifier("gameDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }
    @Bean(name="gameSqlSessionTemplate")
    public SqlSessionTemplate gameSqlSessionTemplate(@Qualifier("gameSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

}

在配置类扫描的包下进行数据交互

我们以game为例：

mapper：

package org.geemp.game.gm.mapper;

import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Map;

/**
 * @author JackRen
 * @date 2021-12-01 14:43
 * @description:
 */
public interface GameMapper {

    @Select("select CT_INGOT,CT_GOLD,CT_POINT from chartable where CT_USERID = #{CT_USERID} and CT_NAME=#{CT_NAME}")
    List> obtainDataBy(@Param("CT_USERID") String CT_USERID,@Param("CT_NAME") String CT_NAME);
}

service：

package org.geemp.game.gm.service;

import org.geemp.game.gm.mapper.GameMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;

/**
 * @author JackRen
 * @date 2021-04-27 13:31
 * @description:
 */
@Service
public class GameDBServiceImpl {

    @Autowired
    private GameMapper gameMapper;

    public List> obtainDataBy(String CT_USERID, String CT_NAME){
        List> dataList= gameMapper.obtainDataBy(CT_USERID,CT_NAME);
        return dataList;
    }

}

同样的，account和game是一样的写法，篇幅限制不再粘贴，到这里就完成了，可以启动测试！