Mybatis游标查询大量数据方式

@Options(resultSetType = ResultSetType.FORWARD_ONLY, fetchSize = Integer.MIN_VALUE)
@Select("select domain from illegal_domain where icpstatus != #{icpstatus}")
Cursor<IllegalDomain> getDayJobDomain(@Param("icpstatus") Integer icpstatus);

Cursor<IllegalDomain> domainList = illegalDomainMapper.getDayJobDomain(1);

domainList.forEach(illegalDomain -> {
    //处理逻辑，根据业务需求自行完成
    Future<IcpStatusVo> future = checkIcpThreadPool.submit(new IcpCheckThread(illegalDomain.getDomain(), configMap));
    results.add(future);
});

Iterator<IllegalDomain> iter = domainList.iterator();
while (iter.hasNext()) {
    <!--// Fetch next 10 employees-->
    <!--for(int i = 0; i<10 && iter.hasNext(); i++) {-->
    <!--    smallChunk.add(iter.next());-->
    <!--}-->
    
    //处理逻辑，根据业务需求自行完成
    Future<IcpStatusVo> future = checkIcpThreadPool.submit(new IcpCheckThread(illegalDomain.getDomain(), configMap));
    results.add(future);
}

try{
    //your code
    
} catch (Exception e) {
    log.error(e);
} finally {
    if(null != domainList){
        try {
            domainList.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

// 第一种
@Options(resultSetType = ResultSetType.FORWARD_ONLY)
@Select("SELECT * FROM department WHERE status = 0")
List<DepartmentEntity> queryDepartmentAll();
 
// 第二种 在Mybatis-3.4.0版本中，不支持@select注解，在3.4.1版本中已经修复：
@Options(resultSetType = ResultSetType.FORWARD_ONLY)
@Select("SELECT * FROM department WHERE status = 0")
Cursor<Employee> cursorQueryDepartmentAll();

@Service
public class DepartmentServiceImpl implements DepartmentService { 
    private static final Logger LOG = LoggerFactory.getLogger(DepartmentServiceImpl.class);
 
    @Autowired
    private DepartmentDao departmentDao;
 
    @Autowired
    private SqlSessionTemplate sqlSessionTemplate; 
    public List<DepartmentDTO> getDepartmentList(DepartmentSearchParam param) {
        Cursor<Object> cursor = null;
        SqlSession sqlSession = null;
        try {
            sqlSession = sqlSessionTemplate.getSqlSessionFactory().openSession();
            cursor = sqlSession.selectCursor(DepartmentDao.class.getName() + ".queryDepartmentAll");
            cursor.forEach(e -> {
                // 处理逻辑
            });
           // 也可以使用迭代器：Iterator<Object> iterator = cursor.iterator();
        } catch (Exception e) {
            e.printStackTrace();
        } 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);
                }
            }
        }
    }
}