diff --git a/paicoding-ui/src/main/resources/static/css/components/article-item.css b/paicoding-ui/src/main/resources/static/css/components/article-item.css
index 6e02d2f7fc33634749bafd3ff38b0fe486c00100..04345c3181dddfc6b10bc4f095ebc7d1559844c0 100644
--- a/paicoding-ui/src/main/resources/static/css/components/article-item.css
+++ b/paicoding-ui/src/main/resources/static/css/components/article-item.css
@@ -171,7 +171,7 @@
   width: 100%;
   height: 100%;
   background-position: bottom;
-  background-size: auto 100%;
+  background-size: cover;
   background-repeat: no-repeat;
   border-radius: 50%;
   border-bottom-left-radius: 0;
diff --git a/paicoding-ui/src/main/resources/static/css/components/side-column.css b/paicoding-ui/src/main/resources/static/css/components/side-column.css
index 08ca0b0cc367e0bdd6a24e4deceef5b9394d13a6..d152264db5aa5769ef9659cff1c54586869e94c3 100644
--- a/paicoding-ui/src/main/resources/static/css/components/side-column.css
+++ b/paicoding-ui/src/main/resources/static/css/components/side-column.css
@@ -664,7 +664,7 @@
   .ebook-def-star {
     height: 16px;
     width: 92px;
-    background: url(../../img/star.png) no-repeat 0 / auto 100%;
+    background: url(../../img/star.png) no-repeat 0 / cover;
     position: relative;
   }
   
@@ -676,7 +676,7 @@
   
   .ebook-home-stars .ebook-def-star .ebook-cur-star {
     height: 16px;
-    background: url(../../img/star-lighten.png) no-repeat 0 / auto 100%;
+    background: url(../../img/star-lighten.png) no-repeat 0 / cover;
     position: absolute;
     left: 0;
     top: 0;
diff --git a/paicoding-web/src/main/java/com/github/paicoding/forum/web/config/init/ForumDataSourceInitializer.java b/paicoding-web/src/main/java/com/github/paicoding/forum/web/config/init/ForumDataSourceInitializer.java
index 38bdb343db078a0332e592f482b7b9dc1a6ba753..53c5e7036014955168ef02e1de108797068f7a01 100644
--- a/paicoding-web/src/main/java/com/github/paicoding/forum/web/config/init/ForumDataSourceInitializer.java
+++ b/paicoding-web/src/main/java/com/github/paicoding/forum/web/config/init/ForumDataSourceInitializer.java
@@ -117,10 +117,28 @@ public class ForumDataSourceInitializer {
              Statement statement = connection.createStatement()) {
             // 查询数据库是否存在
             ResultSet set = statement.executeQuery("select schema_name from information_schema.schemata where schema_name = '" + database + "'");
+            String createDb = "CREATE DATABASE IF NOT EXISTS " + database;
+            String deleteDb = "DROP DATABASE IF EXISTS " + database;
+            Boolean shouldDbCreate = false;
             if (!set.next()) {
-                // 不存在时，创建数据库
-                String createDb = "CREATE DATABASE IF NOT EXISTS " + database;
-                connection.setAutoCommit(false);
+                // 这种情况应该创建数据库
+                shouldDbCreate = true;
+            } else {
+                // 如果数据库是空的，删除数据库并重新创建
+                set = statement.executeQuery("select COUNT(*) from information_schema.tables where table_schema = '" + database + "'");
+                // 如果数据库是空的
+                set.next();
+                if (set.getInt(1)==0) {
+                    connection.setAutoCommit(false);
+                    // 删除数据库
+                    statement.execute(deleteDb);
+                    log.info("数据库（{}）为空，正在删除并重新创建", database);
+                    // 这种情况应该重新创建数据库
+                    shouldDbCreate = true;
+                }
+            }
+            if (shouldDbCreate){
+                // 创建数据库
                 statement.execute(createDb);
                 connection.commit();
                 log.info("创建数据库（{}）成功", database);