SpringBoot配置多数据源（整合MyBatis-plus）

业务需要，配置不同账号访问不同数据库。项目原来使用的单数据源+MyBatis-plus。

按下面代码整合一切正常。直接上代码：

@SpringBootApplication(exclude = {
        DataSourceAutoConfiguration.class
})

spring.datasource.consultant.jdbc-url=jdbc:mysql://xxxx:3306/consultant?createDatabaseIfNotExist=true&autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&useLegacyDatetimeCode=false&serverTimezone=GMT%2b8
spring.datasource.consultant.username=dev_w
spring.datasource.consultant.password=D83GskdgdseGDDev
spring.datasource.consultant.driver-class-name=com.mysql.jdbc.Driver

spring.datasource.dw.jdbc-url=jdbc:mysql://xxxx:3306/up_dw?createDatabaseIfNotExist=true&autoReconnect=true&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&useLegacyDatetimeCode=false&serverTimezone=GMT%2b8
spring.datasource.dw.username=bs
spring.datasource.dw.password=oDZjmrircB+EYoITyEnBPcRp
spring.datasource.dw.driver-class-name=com.mysql.cj.jdbc.Driver

配置2个数据源

@Configuration
public class DataSourceConfig {

    @Bean(name = "consultantDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.consultant")
    public DataSource consultantDbDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "dwDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.dw")
    public DataSource dwDbDataSource() {
        return DataSourceBuilder.create().build();
    }
}

 dw库SqlSessionFactory，注意扫描不同的mapper接口包和对应的xml文件包

@Configuration
@MapperScan(basePackages = {"com.xxx.xxx.dw.mapper"}, sqlSessionFactoryRef = "sqlSessionFactoryDw")
public class DwDBConfig {

    @Autowired
    @Qualifier("dwDataSource")
    private DataSource dataSource;

    @Bean
    public SqlSessionFactory sqlSessionFactoryDw() throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource);
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/dw/*.xml"));
        MybatisConfiguration configuration = new MybatisConfiguration();
        configuration.setDefaultscriptingLanguage(MybatisXMLLanguageDriver.class);
        configuration.setJdbcTypeForNull(JdbcType.NULL);
        sqlSessionFactoryBean.setConfiguration(configuration);
        sqlSessionFactoryBean.setTransactionFactory(new SpringManagedTransactionFactory());
        return sqlSessionFactoryBean.getObject();
    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplateDw() throws Exception {
        return new SqlSessionTemplate(sqlSessionFactoryDw());
    }
}

 consultant库SqlSessionFactory

@Configuration
@MapperScan(basePackages = {"com.xxx.xxx.communication.mapper"},
        sqlSessionFactoryRef = "sqlSessionFactoryConsultant")
public class ConsultantDBConfig {

    @Autowired
    @Qualifier("consultantDataSource")
    private DataSource dataSource;

    @Bean
    public SqlSessionFactory sqlSessionFactoryConsultant() throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSource);
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/consultant/*.xml"));
        MybatisConfiguration configuration = new MybatisConfiguration();
        configuration.setDefaultscriptingLanguage(MybatisXMLLanguageDriver.class);
        configuration.setJdbcTypeForNull(JdbcType.NULL);
        sqlSessionFactoryBean.setConfiguration(configuration);
        sqlSessionFactoryBean.setTransactionFactory(new SpringManagedTransactionFactory());
        return sqlSessionFactoryBean.getObject();
    }

    @Bean
    public SqlSessionTemplate sqlSessionTemplateConsultant() throws Exception {
        return new SqlSessionTemplate(sqlSessionFactoryConsultant());
    }
}

整合完毕。