springboot同时配置mysql和SqlServer多个数据源

Posted 2021-09-22 guxiaohai_

一：简介

近期在开发项目中，需要同时从mysql和SqlServer数据库拿取数据。本示例以springboot架子简单介绍下如何同时配置并拿取到不同数据库数据。

二：编码

1. application.yml文件配置

	spring:
	  datasource:
	  	#mysql配置
	    master:	#数据源名称
	      driver-class-name: com.mysql.cj.jdbc.Driver
	      jdbc-url: jdbc:mysql://ip:port/数据库名称?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
	      username: 账户
	      password: 密码
	      type: com.alibaba.druid.pool.DruidDataSource
		#SqlServer配置
		other: #数据源名称
	      driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
	      jdbc-url: jdbc:sqlserver://ip:port;Databasename=数据库名称
	      username: 账户
	      password: 密码
	      min-evictable-idle-time-millis: 1800000 #连接池空闲连接的有效时间 ，设置30分钟
	      initial-size: 5
	      max-active: 10
	      max-wait: 60000
	      min-idle: 5

2. 集成mysql数据库Configuration初始化配置

@Configuration
@MapperScan(basePackages ="mapper路径（如：com.a.b.mapper）", sqlSessionFactoryRef = "masterSqlSessionFactory")
public class MybatisDbMasterConfig {

    @Primary
    @Bean(name = "masterDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.master")
    //这里需要注意下：spring.datasource.master中，master名称是application.yml数据库配置的数据源名称
    public DataSource dataSource() {
        return DataSourceBuilder.create().build();
    }

    @Primary
    @Bean(name = "masterSqlSessionFactory")
    public SqlSessionFactory sqlSessionFactory(@Qualifier("masterDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        factoryBean.setDataSource(dataSource);
        factoryBean.setTypeAliasesPackage("entity路径（如：com.a.b.entity）");
        factoryBean.setMapperLocations(
                new PathMatchingResourcePatternResolver().getResources("xml文件路径（如：classpath:com/a/b/mapper/*.xml）"));
        return factoryBean.getObject();
    }

    @Primary
    @Bean(name = "masterTransactionManager")
    public DataSourceTransactionManager transactionManager(@Qualifier("masterDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

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

3. 集成SqlServer数据库Configuration初始化配置

@Configuration
@MapperScan(basePackages = "mapperThree路径（如：com.a.b.mapperThree）", sqlSessionFactoryRef = "otherSqlSessionFactory")
public class MybatisDbOtherConfig {

    //这里需要注意下：spring.datasource.other中，other名称是application.yml数据库配置的数据源名称
    @Bean(name = "otherDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.other")
    public DataSource dataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "otherTransactionManager")
    public DataSourceTransactionManager transactionManager(@Qualifier("otherDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);

    }

    @Bean(name = "otherSqlSessionFactory")
    public SqlSessionFactory basicSqlSessionFactory(@Qualifier("otherDataSource") DataSource basicDataSource) throws Exception {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        factoryBean.setDataSource(basicDataSource);
        factoryBean.setMapperLocations(
                new PathMatchingResourcePatternResolver().getResources("xml文件路径（如：classpath:com/a/b/mapperThree/*.xml）"));
        return factoryBean.getObject();
    }

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

…后面就是根据初始化类里面的路径写dao层和mapper xml文件sql数据语句了。。。