application.yml

spring:
  data:
    mongodb:
      uri: mongodb://localhost:27017/dbname
      
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    druid:
      driver-class-name: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://localhost:3306/dbname?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8
      username: root
      password: 111
      initial-size: 10
      max-active: 100
      min-idle: 10
      max-wait: 60000
      pool-prepared-statements: true
      max-pool-prepared-statement-per-connection-size: 20
      time-between-eviction-runs-millis: 60000
      min-evictable-idle-time-millis: 300000
      test-while-idle: true
      test-on-borrow: false
      test-on-return: false
      stat-view-servlet:
        enabled: true
        url-pattern: /druid/*
        #login-username: admin
        #login-password: admin
      filter:
        stat:
          log-slow-sql: true
          slow-sql-millis: 1000
          merge-sql: false
        wall:
          config:
            multi-statement-allow: true

    clickhouse:
      driverClassName: ru.yandex.clickhouse.ClickHouseDriver
      url: jdbc:clickhouse://localhost:8123/dbname?serverTimezone=UTC&max_query_size=100000000
      username: default
      password: 1111
      testWhileIdle: true
      validationQuery: SELECT 1
      initialSize: 10
      maxActive: 100
      minIdle: 10
      maxWait: 60000

jar:

        <!--mongodb-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
   
    <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        
               <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.2</version>
        </dependency>

     <dependency>
            <groupId>ru.yandex.clickhouse</groupId>
            <artifactId>clickhouse-jdbc</artifactId>
            <version>0.2.4</version>
        </dependency>

MyBatisConfig

package xxx.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
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.core.io.support.ResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * 连接 smart_device 数据库
 */
@Configuration
@EnableTransactionManagement
@MapperScan(basePackages = "{com.xxx.mapper}", sqlSessionTemplateRef = "sqlSessionTemplate1")
public class MyBatisConfig {

    private static final Logger logger = LoggerFactory.getLogger(MyBatisConfig.class);

    @Autowired
    @Qualifier("druidDataSource1")
    private DruidDataSource dataSource;

    @Bean(name = "druidDataSource1",destroyMethod = "close", initMethod = "init")
    @ConfigurationProperties(prefix = "spring.datasource.druid")
    @Primary
    public DruidDataSource druidDataSource() {
        return DruidDataSourceBuilder.create().build();
    }
	/**因为用的是mybatis-pus所以需要返回MybatisSqlSessionFactoryBean ，如果只是mybatis返回SqlSessionFactory类型的Bean**/
    @Bean(name = "sqlSessionFactory1")
    @Primary
    public MybatisSqlSessionFactoryBean sqlSessionFactoryBean() {
        MybatisSqlSessionFactoryBean bean = new MybatisSqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        bean.setTypeAliasesPackage("youbang.sub.b2b.domain");

        //添加XML目录
        ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        try {
            bean.setMapperLocations(resolver.getResources("classpath:mapper/*Mapper.xml"));
            return bean;
        } catch (Exception e) {
            logger.error(e.getMessage());
            throw new RuntimeException(e);
        }
    }



    @Bean(name = "sqlSessionTemplate1")
    @Primary
    public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("sqlSessionFactory1") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

    @Bean(name = "transactionManager1")
    @Primary
    public DataSourceTransactionManager transactionManager1() {
        return  new DataSourceTransactionManager(dataSource);
    }
}

clickhouse:
ClickHouseJdbcParamConfig:

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

@Data
@Configuration
@ConfigurationProperties(prefix = "spring.datasource.clickhouse")
public class ClickHouseJdbcParamConfig {
	private String driverClassName;
	private String url;
	private String username;
	private String password;
	private Integer initialSize;
	private Integer maxActive;
	private Integer minIdle;
	private Integer maxWait;
	private Boolean testWhileIdle;
	private String validationQuery;

}

ClickHouseConfig:

package xxx.config.clickhouse;

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.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement
@MapperScan(basePackages = "com.xxx.clickhouseMapper", sqlSessionTemplateRef = "sqlSessionTemplate2")
public class ClickHouseConfig {

	@Autowired
	private ClickHouseJdbcParamConfig jdbcParamConfig;
 
	@Bean("clickDataSource")
	public DruidDataSource dataSource() {
		DruidDataSource datasource = new DruidDataSource();
		datasource.setUrl(jdbcParamConfig.getUrl());
		datasource.setDriverClassName(jdbcParamConfig.getDriverClassName());
		datasource.setUsername(jdbcParamConfig.getUsername());
		datasource.setPassword(jdbcParamConfig.getPassword());
		datasource.setTestWhileIdle(jdbcParamConfig.getTestWhileIdle());
		datasource.setValidationQuery(jdbcParamConfig.getValidationQuery());
		datasource.setInitialSize(jdbcParamConfig.getInitialSize());
		datasource.setMinIdle(jdbcParamConfig.getMinIdle());
		datasource.setMaxActive(jdbcParamConfig.getMaxActive());
		datasource.setMaxWait(jdbcParamConfig.getMaxWait());
		return datasource;
	}

	@Bean("clickTransactionManager")
	public DataSourceTransactionManager getDataSourceTransactionManager(
			@Qualifier("clickDataSource") DruidDataSource dataSource) {
		return new DataSourceTransactionManager(dataSource);
	}
 
	@Bean("clickhouseSqlSessionFactory")
	public SqlSessionFactory getSqlSessionManager(@Qualifier("clickDataSource") DruidDataSource dataSource)
			throws Exception {
		SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
		bean.setDataSource(dataSource);
		Resource[] resource = new PathMatchingResourcePatternResolver()
				.getResources("classpath:clickhouse/*Mapper.xml");
		bean.setMapperLocations(resource);
		return bean.getObject();
	}

	@Bean(name = "sqlSessionTemplate2")
	public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("clickhouseSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
		return new SqlSessionTemplate(sqlSessionFactory);
	}
}