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                1.jdbc方式中使用executeBatch實現 JDBC中在做數據插入、更新、刪除操作,可以使用executeBatch()方法減少數據庫調用次數,如: ~~~ Statement pstmt = conn.createStatement(); pstmt.addBatch("insert into settings values(3,'小米','女')"); pstmt.addBatch("insert into settings values(4,'小李','女')"); pstmt.addBatch("insert into settings values(5,'小王','男')"); pstmt.addBatch("insert into settings values(6,'小明','男')"); pstmt.executeBatch(); ~~~ 2.采用hibernate框架session.save()保存數據 在hibernate中實現批量插入,必須通過經常的調用 flush() 以及稍后調用 clear() 來控制第一級緩存的大小。 ~~~ Session session = sessionFactory.openSession(); Transaction tx = session.beginTransaction(); for ( int i=0; i<100000; i++ ) { Student entity = new Student(.....); session.save(entity); if ( i % 50 == 0 ) { //每次批量把50條數據寫入數據庫并釋放內存 session.flush(); session.clear(); } } tx.commit(); session.close(); ~~~ 3.采用MyBatis框架批量新增數據 在MyBatis的mapping文件中的相應xml的insert標簽中,對插入的值采用循環的方式。如下面代碼: ~~~ <insert id ="insertBatch" parameterType="List" > insert into STUDENT( ID,NAME,SEX) values <foreach collection ="list" item ="item" index ="index" separator =","> ( #{item.id},#{item.name},#{item.sex}) </foreach> </insert > ~~~
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