springboot druid 多数据源配置

由于工作当中，需要配置双数据源进行数据同步，以目录进行区别主副库的编写。这里记录一下，方便大家。

1、pom配置

   

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>${druid.version}</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid-spring-boot-starter</artifactId>
    <version>${druid-spring-boot-starter.version}</version>
</dependency>

 

2、yml配置

spring:
 datasource:
    druid:
      primary:
        driver-class-name: oracle.jdbc.driver.OracleDriver             
        url: jdbc:oracle:thin:@192.168.1.1:1521:orcl             # 数据库名称
        username: test
        password: 123456
        min-idle: 1                                           # 数据库连接池的最小维持连接数
        initial-size: 5                                       # 初始化连接数
        max-active: 8
        max-wait: 60000
      secondary:
        driver-class-name: oracle.jdbc.driver.OracleDriver              # 驱动包 todo 光谷库
        url: jdbc:oracle:thin:@192.168.1.2:1521:orcl             # 数据库名称
        username: test
        password: inner
        min-idle: 1                                           # 数据库连接池的最小维持连接数
        initial-size: 5                                       # 初始化连接数
        max-active: 8
        max-wait: 60000

3、配置类编写 

   

@Configuration
public class DataSourceConfig {
    @Bean(name = "primaryDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.druid.primary")
    @Primary
 public DruidDataSource primaryDataSource() {
        return DruidDataSourceBuilder.create().build();
 }
    @Bean
    @Primary
 public SqlSessionFactory primarySqlSessionFactory(@Qualifier("primaryDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
 bean.setDataSource(dataSource);
 PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
 bean.setMapperLocations(resolver.getResources(
                "classpath*:mybatis/mapping/primary/*.xml"));
 bean.setConfigLocation(resolver.getResource("classpath:mybatis/mybatis.cfg.xml"));
        return bean.getObject();
 }
    @Bean
    @Primary
 public DataSourceTransactionManager primaryTransactionManager(@Qualifier("primaryDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
 }
    @Bean
    @Primary
 public SqlSessionTemplate primarySqlSessionTemplate(@Qualifier("primarySqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
 }






    @Bean(name = "secondaryDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.druid.secondary")
    public DruidDataSource secondaryDataSource() {
        return DruidDataSourceBuilder.create().build();
 }
    @Bean
 public SqlSessionFactory secondarySqlSessionFactory(@Qualifier("secondaryDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
 bean.setDataSource(dataSource);
 PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
 bean.setMapperLocations(resolver.getResources(
                "classpath*:mybatis/mapping/secondary/*.xml"));
 bean.setConfigLocation(resolver.getResource("classpath:mybatis/mybatis.cfg.xml"));
        return bean.getObject();
 }
    @Bean
 public DataSourceTransactionManager secondaryTransactionManager(@Qualifier("secondaryDataSource") DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
 }
    @Bean
 public SqlSessionTemplate secondarySqlSessionTemplate(@Qualifier("secondarySqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
 }

4、MyBatisMapperScannerConfig 配置 

  

@Configuration
public class MyBatisMapperScannerConfig {
    @Bean
 public MapperScannerConfigurer primaryMyBatisMapperScannerConfig() {
        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
 mapperScannerConfigurer.setSqlSessionFactoryBeanName("primarySqlSessionFactory");
 mapperScannerConfigurer.setSqlSessionTemplateBeanName("primarySqlSessionTemplate");
 mapperScannerConfigurer.setBasePackage("com.onecloud.**.mapper.primary");
 buildProperties(mapperScannerConfigurer);
        return mapperScannerConfigurer;
 }
   @Bean
 public MapperScannerConfigurer secondaryMyBatisMapperScannerConfig() {
        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
 mapperScannerConfigurer.setSqlSessionFactoryBeanName("secondarySqlSessionFactory");
 mapperScannerConfigurer.setSqlSessionTemplateBeanName("secondarySqlSessionTemplate");
 mapperScannerConfigurer.setBasePackage("com.onecloud.**.mapper.secondary");
 buildProperties(mapperScannerConfigurer);
        return mapperScannerConfigurer;
 }

    private void buildProperties(MapperScannerConfigurer mapperScannerConfigurer){
        //初始化扫描器的相关配置，这里我们要创建一个Mapper的父类
 Properties properties = new Properties();
 properties.setProperty("mappers", "tk.mybatis.mapper.common.Mapper");
 properties.setProperty("notEmpty", "false");
 properties.setProperty("IDENTITY", "ORACLE");
 //主键UUID回写方法执行顺序 默认AFTER
 properties.setProperty("ORDER","BEFORE");
 mapperScannerConfigurer.setProperties(properties);
 }



}