springboot mybatis 多数据源 Druid连接池，demo源码

注：本文介绍的mysql版本是5.x ，如果mysql升级到8 有几个地方需要改动
https://blog.csdn.net/a704397849/article/details/108396563

上一篇介绍了springboot mybatis多数据库源码demo,本章在之前的基础上增加Druid连接池配置
https://blog.csdn.net/a704397849/article/details/93667782

druid 的maven依赖

        
        
            com.alibaba
            druid
            1.1.0
        

application.properties 新增druid 的配置 ,注意配置中数据库连接的ip prot和账号密码填自己的

#mybatis(地址端口账号密码填自己的mysql连接信息,dbtest是一个自定义的数据库连接对象名，后面配置创建数据库连接会用到)
spring.datasource.dbtest.jdbcUrl=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=UTF-8&useSSL=false
spring.datasource.dbtest.username=xxxxxx
spring.datasource.dbtest.password=xxxxxx
spring.datasource.dbtest.driver-class-name=com.mysql.jdbc.Driver
#第二个数据源(地址端口账号密码填自己的mysql连接信息,dbtest2是一个自定义的数据库连接对象名，后面配置创建数据库连接会用到)
spring.datasource.dbtest2.jdbcUrl=jdbc:mysql://127.0.0.1:3306/test2?useUnicode=true&characterEncoding=UTF-8&useSSL=false
spring.datasource.dbtest2.username=xxxxxx
spring.datasource.dbtest2.password=xxxxxx
spring.datasource.dbtest2.driver-class-name=com.mysql.jdbc.Driver

#连接池druid的配置信息
spring.datasource.druid.initialSize=5
spring.datasource.druid.minIdle=5
spring.datasource.druid.maxActive=20
spring.datasource.druid.maxWait=60000
spring.datasource.druid.timeBetweenEvictionRunsMillis=60000
spring.datasource.druid.minEvictableIdleTimeMillis=300000
spring.datasource.druid.validationQuery=SELECT 1 FROM DUAL
spring.datasource.druid.testWhileIdle=true
spring.datasource.druid.testOnBorrow=false
spring.datasource.druid.testOnReturn=false
spring.datasource.druid.poolPreparedStatements=true
spring.datasource.druid.maxPoolPreparedStatementPerConnectionSize=20
spring.datasource.druid.filters=stat,wall

上面配置中的2个数据库test 和 test2 的 config文件修改masterDataSource方法，原本返回默认的DataSource ， 更改为返回创建的 DruidDataSource

DataSourceDbtestConfig

package com.example.mybatis_demo.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.boot.context.properties.ConfigurationProperties;
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 javax.sql.DataSource;

@Configuration
@MapperScan(basePackages = "com.example.mybatis_demo.mapper.dbtest", sqlSessionFactoryRef = "dbtestSqlSessionFactory")
public class DataSourceDbtestConfig {
    /**
     * 数据库连接配置
     */
    @Value("${spring.datasource.dbtest.jdbcUrl}")
    private String url;
    @Value("${spring.datasource.dbtest.username}")
    private String user;
    @Value("${spring.datasource.dbtest.password}")
    private String password;
    @Value("${spring.datasource.dbtest.driver-class-name}")
    private String driverClass;

    /**
     * druid配置
     */
    @Value("${spring.datasource.druid.maxActive}")
    private Integer maxActive;
    @Value("${spring.datasource.druid.minIdle}")
    private Integer minIdle;
    @Value("${spring.datasource.druid.initialSize}")
    private Integer initialSize;
    @Value("${spring.datasource.druid.maxWait}")
    private Long maxWait;
    @Value("${spring.datasource.druid.timeBetweenEvictionRunsMillis}")
    private Long timeBetweenEvictionRunsMillis;
    @Value("${spring.datasource.druid.minEvictableIdleTimeMillis}")
    private Long minEvictableIdleTimeMillis;
    @Value("${spring.datasource.druid.validationQuery}")
    private String validationQuery;
    @Value("${spring.datasource.druid.testWhileIdle}")
    private Boolean testWhileIdle;
    @Value("${spring.datasource.druid.testWhileIdle}")
    private Boolean testOnBorrow;
    @Value("${spring.datasource.druid.testOnBorrow}")
    private Boolean testOnReturn;
    @Value("${spring.datasource.druid.poolPreparedStatements}")
    private Boolean poolPreparedStatements;
    @Value("${spring.datasource.druid.maxPoolPreparedStatementPerConnectionSize}")
    private Integer maxPoolPreparedStatementPerConnectionSize;

    @Primary
    @Bean(name = "dbtestDataSource")
    public DataSource masterDataSource() {
        //        return DataSourceBuilder.create().build();
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(driverClass);
        dataSource.setUrl(url);
        dataSource.setUsername(user);
        dataSource.setPassword(password);

        //连接池配置
        dataSource.setMaxActive(maxActive);
        dataSource.setMinIdle(minIdle);
        dataSource.setInitialSize(initialSize);
        dataSource.setMaxWait(maxWait);
        dataSource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        dataSource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        dataSource.setTestWhileIdle(testWhileIdle);
        dataSource.setTestOnBorrow(testOnBorrow);
        dataSource.setTestOnReturn(testOnReturn);
        dataSource.setValidationQuery(validationQuery);

        dataSource.setPoolPreparedStatements(poolPreparedStatements);
        dataSource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);

        return dataSource;
    }

    @Primary
    @Bean(name = "dbtestSqlSessionFactory")
    public SqlSessionFactory sqlSessionFactory(@Qualifier("dbtestDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource);
        //注意： com/example/mybatis_demo/mapper/dbtest/ 下必须至少要有一个文件，否则启动会失败
        sessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:com/example/mybatis_demo/mapper/dbtest/*.xml"));
        return sessionFactoryBean.getObject();
    }
}

DataSourceDbtest2Config

package com.example.mybatis_demo.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.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

@Configuration
@MapperScan(basePackages = "com.example.mybatis_demo.mapper.dbtest2", sqlSessionFactoryRef = "dbtest2SqlSessionFactory")
public class DataSourceDbtest2Config {
    /**
     * 数据库连接配置
     */
    @Value("${spring.datasource.dbtest2.jdbcUrl}")
    private String url;
    @Value("${spring.datasource.dbtest2.username}")
    private String user;
    @Value("${spring.datasource.dbtest2.password}")
    private String password;
    @Value("${spring.datasource.dbtest2.driver-class-name}")
    private String driverClass;

    /**
     * druid配置
     */
    @Value("${spring.datasource.druid.maxActive}")
    private Integer maxActive;
    @Value("${spring.datasource.druid.minIdle}")
    private Integer minIdle;
    @Value("${spring.datasource.druid.initialSize}")
    private Integer initialSize;
    @Value("${spring.datasource.druid.maxWait}")
    private Long maxWait;
    @Value("${spring.datasource.druid.timeBetweenEvictionRunsMillis}")
    private Long timeBetweenEvictionRunsMillis;
    @Value("${spring.datasource.druid.minEvictableIdleTimeMillis}")
    private Long minEvictableIdleTimeMillis;
    @Value("${spring.datasource.druid.validationQuery}")
    private String validationQuery;
    @Value("${spring.datasource.druid.testWhileIdle}")
    private Boolean testWhileIdle;
    @Value("${spring.datasource.druid.testWhileIdle}")
    private Boolean testOnBorrow;
    @Value("${spring.datasource.druid.testOnBorrow}")
    private Boolean testOnReturn;
    @Value("${spring.datasource.druid.poolPreparedStatements}")
    private Boolean poolPreparedStatements;
    @Value("${spring.datasource.druid.maxPoolPreparedStatementPerConnectionSize}")
    private Integer maxPoolPreparedStatementPerConnectionSize;

    @Bean(name = "dbtest2DataSource")
    public DataSource masterDataSource() {
        //        return DataSourceBuilder.create().build();
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(driverClass);
        dataSource.setUrl(url);
        dataSource.setUsername(user);
        dataSource.setPassword(password);

        //连接池配置
        dataSource.setMaxActive(maxActive);
        dataSource.setMinIdle(minIdle);
        dataSource.setInitialSize(initialSize);
        dataSource.setMaxWait(maxWait);
        dataSource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        dataSource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        dataSource.setTestWhileIdle(testWhileIdle);
        dataSource.setTestOnBorrow(testOnBorrow);
        dataSource.setTestOnReturn(testOnReturn);
        dataSource.setValidationQuery(validationQuery);

        dataSource.setPoolPreparedStatements(poolPreparedStatements);
        dataSource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);

        return dataSource;
    }

    @Bean(name = "dbtest2SqlSessionFactory")
    public SqlSessionFactory sqlSessionFactory(@Qualifier("dbtest2DataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource);
        //注意： com/example/mybatis_demo/mapper/dbtest2/ 下必须至少要有一个文件，否则启动会失败
        sessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:com/example/mybatis_demo/mapper/dbtest2/*.xml"));
        return sessionFactoryBean.getObject();
    }
}

源码

链接：https://pan.baidu.com/s/1PvA7_eNtpcKa9r3R8ibwJQ
提取码：7rya

注：本篇是在上一篇springboot集成mybatis多数据库 的基础上增加druid连接 https://blog.csdn.net/a704397849/article/details/93667782

下一篇介绍springboot maven 打包jar 运行 https://blog.csdn.net/a704397849/article/details/94859617