MyBatis批量增刪改

在項目中用到了MyBatis,以前沒仔細看過MyBatis框架,  下面給大家一段代碼（批量增刪改的操作）  ------>  (以下有抄襲大牛的代碼 忘請見諒)

  

1.批量增加數據的操作

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>

1.1批量修改的操作

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();  
}
<-- 注意 collection="idList" 是對應上面代碼Map插入值時的Key值爲   idList(此名字隨意起)    -->
<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> 

1.1.2(批量修改操作之二)

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>

1.2 (批量刪除)-->ps:一般在數據庫中不真正刪除數據(只是修改表的狀態)

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>