修改修复问题

heheng

2025-10-14 bf0ebc929cd8df63072051a2140ee7acbb8bb664

 multi-system/src/main/resources/mapper/system/ExStudentAnswerMapper.xml

@@ -1,6 +1,9 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.gkhy.exam.system.mapper.ExStudentAnswerMapper">
    <update id="updateState">
        update ex_student_answer set answer = null where  paper_id = #{paperId} AND student_id = #{studentId}
    </update>
    <delete id="deletedByPaperStudentId">
        DELETE
        FROM