docs: 更新文件

src/main/java/nju/seec/helper/service/util/OssObjectUrlUtils.java

@@ -1,33 +0,0 @@
-package nju.seec.helper.service.util;
-
-import nju.seec.helper.util.Consts;
-import nju.seec.helper.util.OssUtils;
-import nju.seec.helper.util.RedisCacheUtils;
-import org.springframework.stereotype.Component;
-
-import java.util.concurrent.TimeUnit;
-
-/**
- * @author cst
- */
-@Component
-public class OssObjectUrlUtils {
-    private static final String OSS_OBJECT_URL_NAME = Consts.SYS_NAME + "_oss_object_url";
-    private static final long OSS_OBJECT_URL_LIVING_SECONDS = 20 * 60;
-    private final RedisCacheUtils cacheUtils;
-    private final OssUtils ossUtils;
-
-    public OssObjectUrlUtils(RedisCacheUtils cacheUtils, OssUtils ossUtils) {
-        this.cacheUtils = cacheUtils;
-        this.ossUtils = ossUtils;
-    }
-
-    public String getUrl(String objectName) {
-        String url = cacheUtils.get(OSS_OBJECT_URL_NAME, objectName);
-        if (url == null) {
-            url = ossUtils.getUrl(objectName, OSS_OBJECT_URL_LIVING_SECONDS);
-            cacheUtils.set(OSS_OBJECT_URL_NAME, objectName, url, OSS_OBJECT_URL_LIVING_SECONDS, TimeUnit.SECONDS);
-        }
-        return url;
-    }
-}

src/main/java/nju/seec/helper/vo/QuizStudentAnswerStatisticVO.java

@@ -1,18 +0,0 @@
-package nju.seec.helper.vo;
-
-import lombok.AllArgsConstructor;
-import lombok.Data;
-
-import java.math.BigDecimal;
-import java.util.Map;
-
-/**
- * @author cst
- */
-@AllArgsConstructor(staticName = "of")
-@Data
-public class QuizStudentAnswerStatisticVO {
-    private Long quizId;
-    private Map<BigDecimal, Integer> scores;
-    private Map<Integer, Integer> submitNums;
-}

src/main/resources/update.sql

@@ -1,8 +1,13 @@
-update user u
-set u.password = md5(sha2(from_base64(u.password), 256));
+update user
+set password = sha2(from_base64(password), 256);
 
-update course c
-set c.code = from_base64(c.code);
+update course
+set code = from_base64(code);
 
 update admin
-set password = md5(sha2(from_base64(password), 256));
+set password = sha2(from_base64(password), 256);
+
+alter table comment
+    add index comment_slide_page_user (slide_id, page_number, user_id);
+
+drop index slide_page_top on comment;