如何将SELECT查询的结果分配给mybatis中的java对象?
我试图使用foreach循环将作者列表插入mybatis mapper xml中的Author表,如下所示 AuthorVO.java如何将SELECT查询的结果分配给mybatis中的java对象?,java,mybatis,Java,Mybatis,我试图使用foreach循环将作者列表插入mybatis mapper xml中的Author表,如下所示 AuthorVO.java class AuthorVO { private List<Author> authors; ... } Author.xml <insert id="insertAuthor(authorVO)"> <foreach item="author" index="index" collection="authors"> I
class AuthorVO {
private List<Author> authors;
...
}
Author.xml
<insert id="insertAuthor(authorVO)">
<foreach item="author" index="index" collection="authors">
INSERT into Author (id, name, level)
values
(
(select id from get_next_id where table_name="Author"),
#{author.name},
#{author.level}
)
</insert>
<!-- Need to copy the id value into the author object (author.id) -->
</foreach>
请告诉我将id值从表复制到JavaPOJO对象(Author.id)的语法或正确方法 尝试在java代码中使用selectKey而不使用foreach并循环遍历集合:
<insert id="insertAuthor(authorVO)">
<selectKey keyProperty="author.id" keyColumn="id" resultType="int" order="BEFORE">
select id from get_next_id where table_name="Author"
</selectKey>
INSERT into Author (id, name, level)
values
(
#{author.id},
#{author.name},
#{author.level}
)
</insert>
从get_next_id where table_name=“Author”中选择id
插入作者(id、姓名、级别)
价值观
(
#{author.id},
#{author.name},
#{作者级别}
)
在内部不受支持。还有别的办法吗?好的,很抱歉。我更新了我的答案,建议您在java中对集合进行多次迭代,以调用insert,而不是使用foreach,因为foreach似乎是为构建sql语句而设计的,而不是多次执行语句
#{author.id} = (select id from get_next_id where table_name="Author")
<insert id="insertAuthor(authorVO)">
<selectKey keyProperty="author.id" keyColumn="id" resultType="int" order="BEFORE">
select id from get_next_id where table_name="Author"
</selectKey>
INSERT into Author (id, name, level)
values
(
#{author.id},
#{author.name},
#{author.level}
)
</insert>