Question

Mybatis查询实例，sql中的in在Mybatis中怎么写

Answer 1

在service中把参数放到袜侍HashMap中
List<String> list = new ArrayList<String>();
list.add("x");
list.add("y");
list.add("前嫌z");

String s = "A"

Date d = new Date();

HashMap<String,Object> param = new HashMap<String,Object>();

param.put("list",list);
param.put("s"慧好手,s);
param.put("d",d);

XXXDao.queryXXX(param);

在Mybatis的Mapper中是这么写：
<select id = "queryXXX",resultType = "XXX", paramterType = "java.lang.HashMap">
select * from tab where zi_duan1 = #{s} and zi_duan2 = #{d}
and zi_duan3 in
<foreach item="item" index="index" collection="list" open="("
separator="," close=")">
#{item}
</foreach>
</select>