springboot多数据源

自定义数据配置

@Slf4j
@Configuration
@MapperScan(basePackages = { "com.baidu.dal.demo"}, sqlSessionFactoryRef = "demoSqlSessionFactory")
public class DemoDataSourceConfig {

    @Bean(name = "demoDataSource")
    @ConfigurationProperties(prefix="jdbc.demo" )
@Primary
    public DataSource primaryDataSource() {
        log.info("数据库连接池创建中.......");
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "demoTransactionManager")
    public DataSourceTransactionManager demoTransactionManager(@Qualifier("demoDataSource") DataSource demoDataSource) {
        return new DataSourceTransactionManager(demoDataSource);
    }

    @Bean(name = "demoSqlSessionFactory")
    public SqlSessionFactory demoSqlSessionFactory(@Qualifier("demoDataSource") DataSource demoDataSource) throws Exception {
        final SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
        sessionFactoryBean.setDataSource(demoDataSource);
        sessionFactoryBean.getObject().getConfiguration().setDefaultFetchSize(Integer.MIN_VALUE);
        return sessionFactoryBean.getObject();
    }

    @Bean(name = "demoSqlSessionTemplate")
    public SqlSessionTemplate sqlSessionTemplate(
            @Qualifier("demoSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        sqlSessionFactory.getConfiguration().setDefaultFetchSize(Integer.MIN_VALUE);
        return new SqlSessionTemplate(sqlSessionFactory, ExecutorType.SIMPLE);
    }
}

游标

SqlSession sqlSession = null;
try {
sqlSession = getSqlSessionTemplate().getSqlSessionFactory().openSession();
cursor = sqlSession.selectCursor(getSourceStatement(), params);
}finally{
if (null != cursor) {
                try {
                    cursor.close();
                } catch (Exception e) {
                    log.error(e.getMessage(), e);
                }
            }
            if (null != sqlSession) {
                try {
                    sqlSession.close();
                } catch (Exception e) {
                    log.error(e.getMessage(), e);
                }
            }
}

protected void processCursorData(Cursor<V> cursor) {
        // Todo 获取数据抽取 函数式编程
        for (V detailData : cursor) {
            
        }
    }

 

来源：CSDN

作者：bei_fang_du_lang

链接：https://blog.csdn.net/bei_fang_du_lang/article/details/103587458