1. Controller层

 @PostMapping(value = "/deleteUsers")
    public BasicResult<Object> deleteUsers(@RequestBody List<Long> list)  

2. Service层

void deleteUsersWithTx(List<Long> ids);

3. mapper层

int deleteUsers(List<Long> list);

4. xml(注意点：parameterType要写成java.lang.Long)

<update id="deleteUsers" parameterType="java.lang.Long">
	  update xxx set xxx=xxx
	  where xxx in
	  <foreach collection="list" index="index" close=")" open="(" item="item" separator=",">
	      #{item}
	  </foreach>
</update>