一、遍历集合
1.不用注解
public void insertList(List<User> users);
<insert id="insertList" parameterType="java.util.List" >
insert into user (id,name,password,sex,age)
values
<foreach collection="list" open="(" close=")" separator="," item="item">
(#{item.id,jdbcType=INTEGER}, #{item.name,jdbcType=VARCHAR},
#{item.password,jdbcType=VARCHAR}, #{item.sex,jdbcType=TINYINT},
#{item.age,jdbcType=INTEGER})
</foreach>
</insert>
2.使用@Param注解
public void insertList(@Param("list") List<User> users);
<insert id="insertList">
insert into user (id,name,password,sex,age)
values
<foreach collection="users" open="(" close=")" separator="," item="item">
(#{item.id,jdbcType=INTEGER}, #{item.name,jdbcType=VARCHAR},
#{item.password,jdbcType=VARCHAR}, #{item.sex,jdbcType=TINYINT},
#{item.age,jdbcType=INTEGER})
</foreach>
</insert>
二、遍历数组Array
1.不用注解
public List<User> selectAllUsers(Integer[] ids);
<select id="selectAllUsers" parameterType="java.util.Array" >
select * from user where id in
<foreach collection="array" open="(" close=")" separator="," item="item">
#{item,jdbcType=INTEGER}
</foreach>
</select
2.使用@Param注解
public List<User> selectAllUsers(@Param("ids") Integer[] ids);
<select id="selectAllUsers" parameterType="java.util.Array" >
select * from user where id in
<foreach collection="ids" open="(" close=")" separator="," item="item">
#{item,jdbcType=INTEGER}
</foreach>
</select
三、遍历两个集合
List<SubOrgDetail> selectSubOrgDetail(@Param("params") Map<String, Object>;
<select id="selectSubOrgDetail" resultMap="BaseResultMapDetail">
SELECT org.org_id,org.org_name,t.goods_id,t.num,`user`.user_pic
FROM
organization org
INNER JOIN
(SELECT belong_org,num,goods_id
FROM
org_goods
WHERE
now_org = 1 AND
belong_org in
<foreach close=")" collection="params.orgIds" index="index" item="id" open="(" separator=",">
#{id}
</foreach>
AND goods_id in
<foreach close=")" collection="params.goodIds" index="index" item="id" open="(" separator=",">
#{id}
</foreach>) t
ON
org.org_id=t.belong_org
INNER JOIN
`user`
ON
`user`.org_id=t.belong_org
</select>