添加链接失效反馈后端及数据库；登陆改为登录

bookshelfplus/src/main/java/plus/bookshelf/Dao/Mapper/FailureFeedbackDOMapper.java

@@ -0,0 +1,23 @@
+package plus.bookshelf.Dao.Mapper;
+
+import org.springframework.stereotype.Repository;
+import plus.bookshelf.Dao.DO.FailureFeedbackDO;
+
+@Repository // 添加这个注解，Autowired的时候idea就不会报错了
+public interface FailureFeedbackDOMapper {
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table failure_feedback
+     *
+     * @mbg.generated
+     */
+    int insert(FailureFeedbackDO row);
+
+    /**
+     * This method was generated by MyBatis Generator.
+     * This method corresponds to the database table failure_feedback
+     *
+     * @mbg.generated
+     */
+    int insertSelective(FailureFeedbackDO row);
+}