springboot 2 多数据源 hikari 连接池

1.配置文件

#第一数据源
spring.datasource.primary.jdbc-url=jdbc:sqlserver://192.168.1.159\aaa:1433;database=dataserver
spring.datasource.primary.username=sa
spring.datasource.primary.password=fr123456
spring.datasource.primary.driver-class-name=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.primary.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.primary.minimum-idle=1
spring.datasource.primary.maximum-pool-size=15
spring.datasource.primary.auto-commit=true
spring.datasource.primary.idle-timeout=60000
spring.datasource.primary.pool-name=fang_sqlserver
spring.datasource.primary.max-lifetime=1800000
spring.datasource.primary.connection-timeout=30000
spring.datasource.primary.connection-test-query=SELECT 1

#第二数据源
spring.datasource.secondary.jdbc-url=jdbc:mysql://192.168.1.130:33306/reptie?zeroDateTimeBehavior=convertToNull&serverTimezone=GMT%2B8&useSSL=false&useUnicode=true&autoReconnect=true
spring.datasource.secondary.username=root
spring.datasource.secondary.password=123456
spring.datasource.secondary.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.secondary.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.secondary.minimum-idle=1
spring.datasource.secondary.maximum-pool-size=15
spring.datasource.secondary.auto-commit=true
spring.datasource.secondary.idle-timeout=60000
spring.datasource.secondary.pool-name=fang_mysql
spring.datasource.secondary.max-lifetime=1800000
spring.datasource.secondary.connection-timeout=30000
spring.datasource.secondary.connection-test-query=SELECT 1

2.java代码，配置DataSource

 

import com.zaxxer.hikari.HikariDataSource;
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.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

/**
 * @author PangG
 * @MapperScan 扫描mapper所在路径
 */
@Configuration
@MapperScan(basePackages = "aa.com.cn.mapper.sqlserver", sqlSessionFactoryRef = "sqlserverSqlSessionFactory")
public class SqlserverDataSourceConfig {

    /**
     * @Bean 注册Bean对象
     * @Primary 表示默认数据源
     * @ConfigurationProperties 读取properties中的配置参数映射成为一个对象
     */
    @Bean(name = "sqlserverDataSource")
    @Primary
    @ConfigurationProperties(prefix = "spring.datasource.primary")
    public HikariDataSource getSqlserverDateSource() {
        return new HikariDataSource();
    }

    /**
     * @param datasource 数据源
     * @return SqlSessionFactory
     * @Primary 默认SqlSessionFactory
     */
    @Bean(name = "sqlserverSqlSessionFactory")
    @Primary
    public SqlSessionFactory sqlserverSqlSessionFactory(@Qualifier("sqlserverDataSource") DataSource datasource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(datasource);
        //mybatis扫描xml所在位置
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/sqlserver/*.xml"));
        //分页插件
        Interceptor interceptor = new PageInterceptor();
        Properties properties = new Properties();
        //数据库
        properties.setProperty("helperDialect", "sqlserver");
//        //是否将参数offset作为PageNum使用
//        properties.setProperty("offsetAsPageNum", "true");
//        //是否进行count查询
//        properties.setProperty("rowBoundsWithCount", "true");
        //是否分页合理化
        properties.setProperty("reasonable", "true");
        interceptor.setProperties(properties);
        bean.setPlugins(new Interceptor[] {interceptor});
        return bean.getObject();
    }

    @Bean("sqlserverSessionTemplate")
    @Primary
    public SqlSessionTemplate sqlserverSqlSessionTemplate(@Qualifier("sqlserverSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

　　

 

import com.zaxxer.hikari.HikariDataSource;
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.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

/**
 * @author PangG
 * @MapperScan 扫描mapper所在路径
 */
@Configuration
@MapperScan(basePackages = "aa.com.cn.mapper.mysql", sqlSessionFactoryRef = "mysqlSqlSessionFactory")
public class MySqlDataSourceConfig {

    /**
     * @Bean 注册Bean对象
     * @Primary 表示默认数据源
     * @ConfigurationProperties 读取properties中的配置参数映射成为一个对象
     */
    @Bean(name = "mysqlDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.secondary")
    public HikariDataSource getMysqlDateSource() {
        return new HikariDataSource();
    }

    /**
     * @param datasource 数据源
     * @return SqlSessionFactory
     * @Primary 默认SqlSessionFactory
     */
    @Bean(name = "mysqlSqlSessionFactory")
    public SqlSessionFactory mysqlSqlSessionFactory(@Qualifier("mysqlDataSource") DataSource datasource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(datasource);
        //mybatis扫描xml所在位置
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/mysql/*.xml"));
        //分页插件
        Interceptor interceptor = new PageInterceptor();
        Properties properties = new Properties();
        //数据库
        properties.setProperty("helperDialect", "mysql");
//        //是否将参数offset作为PageNum使用
//        properties.setProperty("offsetAsPageNum", "true");
//        //是否进行count查询
//        properties.setProperty("rowBoundsWithCount", "true");
        //是否分页合理化
        properties.setProperty("reasonable", "true");
        interceptor.setProperties(properties);
        bean.setPlugins(new Interceptor[]{interceptor});
        return bean.getObject();
    }

    @Bean("mysqlSessionTemplate")
    public SqlSessionTemplate mysqlSqlSessionTemplate(@Qualifier("mysqlSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

　　

如果有 Thread starvation or clock leap detecte 警告 把minimum-idle的值设置成1即可

下面有评论，看不懂，感觉没必要？

getMysqlDateSource()，这个方法的返回值应该改为DataSource，不能是HikariDataSource。 否则的话，@Bean初始化不会执行这个方法。 因为springboot自己已经创建了一个HikariDataSource对象放在ioc容器里，@Bean不会重复创建