diff --git a/src/main/java/io/github/xxyopen/novel/NovelApplication.java b/src/main/java/io/github/xxyopen/novel/NovelApplication.java
index 03d7b25..a55211c 100644
--- a/src/main/java/io/github/xxyopen/novel/NovelApplication.java
+++ b/src/main/java/io/github/xxyopen/novel/NovelApplication.java
@@ -39,11 +39,10 @@ public class NovelApplication {
                 log.info("{}:{}", k, v.getClass().getName());
                 log.info("缓存：{}", v.getCacheNames());
             });
-            if(dataSource instanceof HikariDataSource) {
+            if(dataSource instanceof HikariDataSource hikariDataSource) {
                 // 如果使用的是HikariDataSource，需要提前创建连接池，而不是在第一次访问数据库时才创建，提高第一次访问接口的速度
                 log.info("创建连接池...");
                 try (Connection connection = dataSource.getConnection()) {
-                    HikariDataSource hikariDataSource = (HikariDataSource) dataSource;
                     log.info("最小空闲连接数：{}", hikariDataSource.getMinimumIdle());
                     log.info("最大连接数：{}", hikariDataSource.getMaximumPoolSize());
                     log.info("创建连接池完成.");