MyBatis批量添加、修改和删除
1、批量添加元素session.insert(String string，Object o)
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public void batchInsertStudent(){List<Student> ls = new ArrayList<Student>();for(int i = 5;i < 8;i++){Student student = new Student();student.setId(i);student.setName("maoyuanjun" + i);student.setSex("man" + i);student.setTel("tel" + i);student.setAddress("浙江省" + i);ls.add(student);}SqlSession session = SessionFactoryUtil.getSqlSessionFactory().openSession();session.insert("mybatisdemo.domain.Student.batchInsertStudent", ls);session.commit();session.close();}<insert id="batchInsertStudent" parameterType="java.util.List">INSERT INTO STUDENT (id,name,sex,tel,address)VALUES <foreach collection="list" item="item" index="index" separator="," >(#{item.id},#{item.name},#{item.sex},#{item.tel},#{item.address})</foreach></insert> |
2、批量修改session. insert (String string,Object o)
实例1：
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public void batchUpdateStudent(){List<Integer> ls = new ArrayList<Integer>();for(int i = 2;i < 8;i++){ls.add(i);}SqlSession session = SessionFactoryUtil.getSqlSessionFactory().openSession();session.insert("mybatisdemo.domain.Student.batchUpdateStudent",ls);session.commit();session.close();}<update id="batchUpdateStudent" parameterType="java.util.List">UPDATE STUDENT SET name = "5566" WHERE id IN<foreach collection="list" item="item" index="index" open="(" separator="," close=")" >#{item}</foreach></update> |
实例2：
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public void batchUpdateStudentWithMap(){List<Integer> ls = new ArrayList<Integer>();for(int i = 2;i < 8;i++){ls.add(i);}Map<String,Object> map = new HashMap<String,Object>();map.put("idList", ls);map.put("name", "mmao789");SqlSession session = SessionFactoryUtil.getSqlSessionFactory().openSession();session.insert("mybatisdemo.domain.Student.batchUpdateStudentWithMap",map);session.commit();session.close();}<update id="batchUpdateStudentWithMap" parameterType="java.util.Map" >UPDATE STUDENT SET name = #{name} WHERE id IN <foreach collection="idList" index="index" item="item" open="(" separator="," close=")"> #{item} </foreach></update> |
3、批量删除session.delete(String string,Object o)
public void batchDeleteStudent(){List<Integer> ls = new ArrayList<Integer>();for(int i = 4;i < 8;i++){ls.add(i);}SqlSession session = SessionFactoryUtil.getSqlSessionFactory().openSession();session.delete("mybatisdemo.domain.Student.batchDeleteStudent",ls);session.commit();session.close();}<delete id="batchDeleteStudent" parameterType="java.util.List">DELETE FROM STUDENT WHERE id IN<foreach collection="list" index="index" item="item" open="(" separator="," close=")"> #{item} </foreach></delete>
