springboot-mybatis 多数据源配置

最新推荐文章于 2020-07-28 17:40:20 发布

原创最新推荐文章于 2020-07-28 17:40:20 发布 · 142 阅读

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本文介绍了如何在Spring Boot应用中配置并使用多个数据源，结合MyBatis进行数据库操作。通过配置不同类型的数据库连接池（如Druid和SQL Server），实现了对不同数据库的高效管理。同时，展示了如何使用MyBatis进行SQL映射和事务管理，确保了应用的稳定性和灵活性。

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yml如下：

server:
  port: 80
  servlet:
    context-path: /
spring:
  datasource:
    base:
      type: com.alibaba.druid.pool.DruidDataSource
      driver-class-name: oracle.jdbc.driver.OracleDriver
      initialize: true #指定初始化数据源，是否用data.sql来初始化，默认: true
      url: jdbc:oracle:thin:@x.x.x.x:1521:orcl
      username: username
      password: password
    gas:
      type: com.alibaba.druid.pool.DruidDataSource
      driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
      initialize: true
      url: jdbc:sqlserver://x.x.x.x:2433
      username: username
      password: password
    bridge:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
        initialize: true
        url: jdbc:sqlserver://x.x.x.x:1433
        username: username
        password: password
mybatis:
  configuration:
    map-underscore-to-camel-case: true

package com.ltsk.whcg.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.autoconfigure.jdbc.DataSourceBuilder;
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.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;

@Configuration
// 加上这个注解，使得支持事务
@EnableTransactionManagement
@MapperScan(basePackages = "com.ltsk.whcg.base.mapper", sqlSessionTemplateRef = "baseSqlSessionTemplate")
public class BaseConfig {

    @Bean(name = "baseDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.base")
    @Primary
    public DataSource setDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "baseTransactionManager")
    @Primary
    public DataSourceTransactionManager setTransactionManager(@Qualifier("baseDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "baseSqlSessionFactory")
    @Primary
    public SqlSessionFactory setSqlSessionFactory(@Qualifier("baseDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        return bean.getObject();
    }

    @Bean(name = "baseSqlSessionTemplate")
    @Primary
    public SqlSessionTemplate setSqlSessionTemplate(
            @Qualifier("baseSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

}

package com.ltsk.whcg.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.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;

@Configuration
// 加上这个注解，使得支持事务
@EnableTransactionManagement
@MapperScan(basePackages = "com.ltsk.whcg.bridge.mapper", sqlSessionTemplateRef = "bridgeSqlSessionTemplate")
public class BridgeConfig {

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

        @Bean(name = "bridgeTransactionManager")
        public DataSourceTransactionManager setTransactionManager(@Qualifier("bridgeDataSource") DataSource dataSource) {
            return new DataSourceTransactionManager(dataSource);
        }

        @Bean(name = "bridgeSqlSessionFactory")
        public SqlSessionFactory setSqlSessionFactory(@Qualifier("bridgeDataSource") DataSource dataSource)
                throws Exception {
            SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
            bean.setDataSource(dataSource);
            return bean.getObject();
        }

        @Bean(name = "bridgeSqlSessionTemplate")
        public SqlSessionTemplate setSqlSessionTemplate(
                @Qualifier("bridgeSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
            return new SqlSessionTemplate(sqlSessionFactory);
        }

    }

package com.ltsk.whcg.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.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.sql.DataSource;

@Configuration
// 加上这个注解，使得支持事务
@EnableTransactionManagement
@MapperScan(basePackages = "com.ltsk.whcg.gas.mapper", sqlSessionTemplateRef = "gasSqlSessionTemplate")
public class GasConfig {

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

        @Bean(name = "gasTransactionManager")
        public DataSourceTransactionManager setTransactionManager(@Qualifier("gasDataSource") DataSource dataSource) {
            return new DataSourceTransactionManager(dataSource);
        }

        @Bean(name = "gasSqlSessionFactory")
        public SqlSessionFactory setSqlSessionFactory(@Qualifier("gasDataSource") DataSource dataSource)
                throws Exception {
            SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
            bean.setDataSource(dataSource);
            return bean.getObject();
        }

        @Bean(name = "gasSqlSessionTemplate")
        public SqlSessionTemplate setSqlSessionTemplate(
                @Qualifier("gasSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
            return new SqlSessionTemplate(sqlSessionFactory);
        }

    }