fix 1001224紧急bug

pcloud-service-book/src/main/java/com/pcloud/book/keywords/biz/impl/BookKeywordBizImpl.java

@@ -574,9 +574,6 @@ public class BookKeywordBizImpl implements BookKeywordBiz {
         if (bookGroupId == null){
             throw new BookBizException(BookBizException.ERROR, "缺少参数bookGroupId");
         }
-        if (classifyId == null){
-            classifyId = 0L;
-        }
         return bookKeywordDao.getKeywordCount(bookGroupId, classifyId);
     }
 	

pcloud-service-book/src/main/resources/mapper/keywords/BookKeyword.Mapper.xml

@@ -238,7 +238,9 @@
         bk.is_delete = 0
         AND
         k.is_delete = 0
-        AND classify_id = #{classifyId}
+        <if test="classifyId != null">
+            AND classify_id = #{classifyId}
+        </if>
         AND book_group_id = #{bookGroupId}
     </select>