修复上传书籍的问题

book-server/src/main/java/com/book/server/service/impl/BookServiceImpl.java

@@ -532,7 +532,7 @@ public class BookServiceImpl implements BookService {
         // 测试先清理数据
         uploadBookMapper.deleteByExample(UploadBookExample.newAndCreateCriteria().andBookIdEqualTo(bookId).example());
         // 读取所有行
-        BufferedReader bf = new BufferedReader(new InputStreamReader(file.getInputStream(), "gbk"));
+        BufferedReader bf = new BufferedReader(new InputStreamReader(file.getInputStream(), StandardCharsets.UTF_8));
         String strTmp;
         LinkedList<String> list = new LinkedList<>();
         while ((strTmp = bf.readLine()) != null) {