Mybatis Plus + Spring 分包配置 ClickHouse 和 Mysql 双数据源

￡神魔★判官ぃ 2024-05-01 16:24 62阅读 0赞

**目录**

一、背景

二、各个配置文件总览（文件位置因人而异）

2.1 DataSourceConfig

2.2 MybatisClickHouseConfig （ClickHouse 配置类）

2.3 MybatisMysqlConfig（Mysql 配置类）

2.4 application.properties 配置

2.5 mapper 分包情况

2.6 主类中的 @MapperScan 去掉，因为在上面 ClickHouse 配置类 和 Mysql配置类 中已经定义

2.7 引用依赖（关键性依赖）

三、参考大神，感谢分享！

--------------------

### 一、背景 ###

业务需求，连接池之前用的 Hikari，换成了 **Druid** 注意一下 ~

**我选择 分包 配置动态双数据源**

### 二、各个配置文件总览（文件位置因人而异） ###

#### 2.1 DataSourceConfig ####

package xxx.xxx.xxx.common.config;
    
    import javax.sql.DataSource;
    
    import org.springframework.boot.context.properties.ConfigurationProperties;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import com.alibaba.druid.pool.DruidDataSource;
    
    /**
     * 双数据源配置类
     *
     * @Author Elenda
     * @Date 2024/03/12 10:10
     * @Version 1.0
     */
    @Configuration
    public class DataSourceConfig {
    
        /**
         * Mysql
         *
         * @return DataSource
         */
        @Bean(name = "mysqlDatasource")
        @ConfigurationProperties(prefix = "spring.datasource.druid.mysql")
        public DataSource mysqlDatasource() {
            return new DruidDataSource();
        }
    
        /**
         * ClickHouse
         *
         * @return DataSource
         */
        @Bean(name = "clickHouseDatasource")
        @ConfigurationProperties(prefix = "spring.datasource.druid.clickhouse")
        public DataSource clickHouseDatasource() {
            return new DruidDataSource();
        }
    }

#### 2.2 MybatisClickHouseConfig （ClickHouse 配置类） ####

package xxx.xxx.xxx.common.config;
    
    import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
    import org.apache.ibatis.session.SqlSessionFactory;
    import org.mybatis.spring.SqlSessionTemplate;
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Qualifier;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.jdbc.datasource.DataSourceTransactionManager;
    
    import javax.sql.DataSource;
    
    /**
     * clickHouse数据源配置
     *
     * @Author Elenda
     * @Date 2024/03/12 10:10
     * @Version 1.0
     */
    @Configuration
    @MapperScan(basePackages = {"xxx.xxx.xxx.mapper.clickhouse"}, sqlSessionFactoryRef = "sqlSessionFactoryDsClickhouse")
    public class MybatisClickHouseConfig {
    
        @Autowired
        @Qualifier("clickHouseDatasource")
        private DataSource clickHouseDatasource;
    
        @Bean
        public SqlSessionFactory sqlSessionFactoryDsClickhouse() throws Exception {
            MybatisSqlSessionFactoryBean factoryBean = new MybatisSqlSessionFactoryBean();
            factoryBean.setDataSource(clickHouseDatasource);
            /*factoryBean.setMapperLocations(
                    //设置mybatis的xml所在位置
                    new PathMatchingResourcePatternResolver().getResources("classpath:/mappings/clickhouse/*.xml")
            );*/
            return factoryBean.getObject();
        }
    
        @Bean
        public SqlSessionTemplate sqlSessionTemplateDsClickhouse() throws Exception {
            SqlSessionTemplate template = new SqlSessionTemplate(sqlSessionFactoryDsClickhouse());
            return template;
        }
    
        @Bean
        public DataSourceTransactionManager transactionManagerClickhouse() {
            return new DataSourceTransactionManager(clickHouseDatasource);
        }
    }

#### 2.3 MybatisMysqlConfig（Mysql 配置类） ####

package xxx.xxx.xxx.common.config;
    
    import com.baomidou.mybatisplus.annotation.DbType;
    import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
    import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
    import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
    import org.apache.ibatis.session.SqlSessionFactory;
    import org.mybatis.spring.SqlSessionTemplate;
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Qualifier;
    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;
    
    /**
     * mysql数据源配置
     *
     * @Author Elenda
     * @Date 2024/03/12 10:10
     * @Version 1.0
     */
    @Configuration
    @MapperScan(basePackages = {"xxx.xxx.xxx.mapper.mysql"}, sqlSessionFactoryRef = "sqlSessionFactoryDsMysql")
    public class MybatisMysqlConfig {
    
        @Autowired
        @Qualifier("mysqlDatasource")
        private DataSource mysqlDatasource;
    
        @Bean
        @Primary
        public SqlSessionFactory sqlSessionFactoryDsMysql() throws Exception {
            MybatisSqlSessionFactoryBean factoryBean = new MybatisSqlSessionFactoryBean();
            factoryBean.setDataSource(mysqlDatasource);
            factoryBean.setMapperLocations(
                    new PathMatchingResourcePatternResolver().getResources("classpath:/mappings/mysql/*.xml")
            );
            //向Mybatis过滤器链中添加拦截器
            MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
            interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
            factoryBean.setPlugins(interceptor);
            return factoryBean.getObject();
        }
    
        @Bean
        @Primary
        public SqlSessionTemplate sqlSessionTemplateDsMysql() throws Exception {
            SqlSessionTemplate template = new SqlSessionTemplate(sqlSessionFactoryDsMysql());
            return template;
        }
    
        @Bean
        @Primary
        public DataSourceTransactionManager transactionManagerMysql() {
            return new DataSourceTransactionManager(mysqlDatasource);
        }
    
    }

#### 2.4 application.properties 配置 ####

# datasource 配置
    # clickhouse
    spring.datasource.druid.clickhouse.test-while-idle=true
    spring.datasource.druid.clickhouse.validation-query=SELECT 1
    spring.datasource.druid.clickhouse.username=username
    spring.datasource.druid.clickhouse.password=password
    spring.datasource.druid.clickhouse.url=url
    spring.datasource.druid.clickhouse.driver-class-name=com.clickhouse.jdbc.ClickHouseDriver
    spring.datasource.druid.clickhouse.type=com.alibaba.druid.pool.DruidDataSource
    
    # mysql
    spring.datasource.druid.mysql.test-while-idle=true
    spring.datasource.druid.mysql.validation-query=SELECT 1
    spring.datasource.druid.mysql.username=username
    spring.datasource.druid.mysql.password=password
    spring.datasource.druid.mysql.url=url
    spring.datasource.druid.mysql.driver-class-name=com.mysql.cj.jdbc.Driver
    spring.datasource.druid.mysql.type=com.alibaba.druid.pool.DruidDataSource

其中，spring.datasource.druid.clickhouse.validation-query=SELECT 1

该选项用来验证数据库连接的有效性

#### 2.5 mapper 分包情况 ####

![3a95e81dd15a4e08bfb03d4c62e53af7.png][]![3a60a64f75d0498abfd11af498c005a8.png][]

#### 2.6 主类中的 @MapperScan 去掉，因为在上面 ClickHouse 配置类 和 Mysql配置类 中已经定义 ####

#### 2.7 引用依赖（关键性依赖） ####

<dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid-spring-boot-starter</artifactId>
        <version>1.2.15</version>
    </dependency>
    
    <dependency>
        <groupId>com.clickhouse</groupId>
        <artifactId>clickhouse-jdbc</artifactId>
        <version>0.3.2-patch11</version>
    </dependency>
    
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.5.3</version>
    </dependency>

### 三、参考大神，感谢分享！ ###

[正确可用版：SpringBoot+Mybatis-plus+Druid 实现配置多数据源（数据库）\_spring\_Oxye-华为云开发者联盟前言此文介绍的是在SpringBoot中使用Mybatis配置多数据源（多个数据库），整合Druid网上有很多文章，翻了翻，但是都有问题啊，有的是没使用Druid，使用了默认的Hirika，有的是配置文件不给或者给的是Hirika能用的配置，层级不对，所以我自己来记一下代码pom文件maven依赖<dependency><groupId>com.alibaba</gr Oxye 华为云开发者联盟![icon-default.png?t=N7T8][icon-default.png_t_N7T8]https://huaweicloud.csdn.net/6387524cdacf622b8df8ab9f.html?dp\_token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6ODI0NzQsImV4cCI6MTcxMDgwOTA1MywiaWF0IjoxNzEwMjA0MjUzLCJ1c2VybmFtZSI6IkVsZW5kYUxlZSJ9.EAq9dDI8MxXQwa-msFI9Urbg\_N59E13lEQS3o95rCVw][SpringBoot_Mybatis-plus_Druid _spring_Oxye-_SpringBoot_Mybatis_Druid_Druid_Hirika_Hirika_pom_maven_dependency_groupId_com.alibaba_gr Oxye _icon-default.png_t_N7T8_icon-default.png_t_N7T8_https_huaweicloud.csdn.net_6387524cdacf622b8df8ab9f.html_dp_token_eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6ODI0NzQsImV4cCI6MTcxMDgwOTA1MywiaWF0IjoxNzEwMjA0MjUzLCJ1c2VybmFtZSI6IkVsZW5kYUxlZSJ9.EAq9dDI8MxXQwa-msFI9Urbg_N59E13lEQS3o95rCVw]

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[3a60a64f75d0498abfd11af498c005a8.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/05/01/1cd84573fe2a4e4a9ca87fd96721bfc3.png
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[SpringBoot_Mybatis-plus_Druid _spring_Oxye-_SpringBoot_Mybatis_Druid_Druid_Hirika_Hirika_pom_maven_dependency_groupId_com.alibaba_gr Oxye _icon-default.png_t_N7T8_icon-default.png_t_N7T8_https_huaweicloud.csdn.net_6387524cdacf622b8df8ab9f.html_dp_token_eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6ODI0NzQsImV4cCI6MTcxMDgwOTA1MywiaWF0IjoxNzEwMjA0MjUzLCJ1c2VybmFtZSI6IkVsZW5kYUxlZSJ9.EAq9dDI8MxXQwa-msFI9Urbg_N59E13lEQS3o95rCVw]: https://huaweicloud.csdn.net/6387524cdacf622b8df8ab9f.html?dp_token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6ODI0NzQsImV4cCI6MTcxMDgwOTA1MywiaWF0IjoxNzEwMjA0MjUzLCJ1c2VybmFtZSI6IkVsZW5kYUxlZSJ9.EAq9dDI8MxXQwa-msFI9Urbg_N59E13lEQS3o95rCVw