工具框架用spring-batch,数据库是mysql(未做特殊优化)。
比较数据框架mybatis和spring jdbc的插入效率。
Mybatis三种实现:
1、mybatis的官方写法
public void batchInsert1(List<Poi> poilist) throws Exception { SqlSession sqlSession = sqlSessionFactory.getObject().openSession(ExecutorType.BATCH); PoiMapper pmapper = sqlSession.getMapper(PoiMapper.class); try { for (Poi poi : poilist) { pmapper.insertPoi(poi); } sqlSession.commit(); } finally { sqlSession.close(); } }
其中Poi是一个bean。
PoiMapper定义:
public interface PoiMapper { @Insert("insert into tb_poi (tag, poi, poiid, meshid, owner, featcode, sortcode, namec, namee, namep, names) values (#{tag}, GeomFromText(#{point}), #{poiid}, #{meshid}, #{owner}, #{featcode}, #{sortcode}, #{namec}, #{namee}, #{namep}, #{names}) ") public void insertPoi(Poi poi); }
2、利用mysql特性,拼写insert sql。
public void batchInsert2(List<Poi> poilist) throws Exception { SqlSession sqlSession = sqlSessionFactory.getObject().openSession(ExecutorType.BATCH); try { sqlSession.insert("com.emg.trans.mapper.batchMapper.batchInsert", poilist); sqlSession.commit(); } finally { sqlSession.close(); } }
“com.emg.trans.mapper.batchMapper.batchInsert”在mybatis的xml中定义的sql,定义如下:
<mapper namespace="com.emg.trans.mapper.batchMapper"> <insert id="batchInsert" parameterType="List"> insert into tb_poi (tag, poi, poiid, meshid, owner, featcode, sortcode, namec, namee, namep, names) values <foreach collection="list" item="poi" index="index" separator="," > (#{poi.tag}, GeomFromText(#{poi.point}), #{poi.poiid}, #{poi.meshid}, #{poi.owner}, #{poi.featcode}, #{poi.sortcode}, #{poi.namec}, #{poi.namee}, #{poi.namep}, #{poi.names}) </foreach> </insert> </mapper>
3、利用spring的事务,直接执行插入操作。
@Transactional("dbTransaction") public void batchInsert3(List<Poi> poilist) throws Exception { for (Poi poi : poilist) { apmapper.insertPoi(poi); } }
apmapper是PoiMapper的实例,用@Autowired配置。
Spring-JDBC的三种实现:
A、用spring事务执行插入操作
@Transactional("dbTransaction") public void batchInsertJDBC1(List<Poi> poilist) throws DataAccessException { String sql = "insert into tb_poi (tag, poi, poiid, meshid, owner, featcode, sortcode, namec, namee, namep, names) values (?, GeomFromText(?), ?, ?, ?, ?, ?, ?, ?, ?, ?)"; for (Poi poi : poilist) { Object[] args = {poi.getTag(), poi.getPoint(), poi.getPoiid(), poi.getMeshid(), poi.getOwner(), poi.getFeatcode(), poi.getSortcode(), poi.getNamec(), poi.getNamee(), poi.getNamep(), poi.getNames()}; jdbcTemplate.update(sql, args); } }
B、用spring事务和springjdbc的batchUpdate
@Transactional("dbTransaction") public void batchInsertJDBC2(List<Poi> poilist) throws DataAccessException { String sql = "insert into tb_poi (tag, poi, poiid, meshid, owner, featcode, sortcode, namec, namee, namep, names) values (?, GeomFromText(?), ?, ?, ?, ?, ?, ?, ?, ?, ?)"; List<Object[]> batchArgs = new ArrayList<Object[]>(); for (Poi poi : poilist) { Object[] args = {poi.getTag(), poi.getPoint(), poi.getPoiid(), poi.getMeshid(), poi.getOwner(), poi.getFeatcode(), poi.getSortcode(), poi.getNamec(), poi.getNamee(), poi.getNamep(), poi.getNames()}; batchArgs.add(args); } jdbcTemplate.batchUpdate(sql, batchArgs); }
C、用spring事务,利用mysql特性,拼写insert sql。
@Transactional("dbTransaction") public void batchInsertJDBC3(List<Poi> poilist) throws DataAccessException { StringBuffer sqlbuf = new StringBuffer() .append("insert into tb_poi (tag, poi, poiid, meshid, owner, featcode, sortcode, namec, namee, namep, names) values "); MessageFormat form = new MessageFormat("(''{0}'', GeomFromText(''{1}''), ''{2}'', ''{3}'', ''{4}'', ''{5}'', ''{6}'', ''{7}'', ''{8}'', ''{9}'', ''{10}''),"); for (Poi poi : poilist) { Object[] args = {poi.getTag(), poi.getPoint(), poi.getPoiid(), poi.getMeshid(), poi.getOwner(), poi.getFeatcode(), poi.getSortcode(), poi.getNamec().replaceAll("'", "\\\\'"), poi.getNamee().replaceAll("'", "\\\\'"), poi.getNamep().replaceAll("'", "\\\\'"), poi.getNames().replaceAll("'", "\\\\'")}; sqlbuf.append(form.format(args)); } String sql = sqlbuf.toString(); sql = sql.substring(0, sql.length()-1); jdbcTemplate.update(sql); }
测试一:每次处理100条,共600条。
测试二:每次处理1000条,共9000条。
直接上结论:
mybatis.1最慢。而且慢很多,很多。
mybatis.2很快。是mybatis中最快的。
mybatis.3比2慢一点。
jdbc.A比B稍快,两者差不多,和mybatis.3也在伯仲之间。
jdbc.C最快,比其他5种都快。
大排行,从用时少到用时多:
jdbc.C < mybatis.2 < jdbc.A < jdbc.B , mybatis.3 << mybatis.1