fix code

hutool-db/src/main/java/org/dromara/hutool/db/Session.java

@@ -279,6 +279,21 @@ public class Session extends AbstractDb<Session> implements Closeable {
 
 	// ---------------------------------------------------------------------------- Transaction method end
 
+	@Override
+	public void closeConnection(final Connection conn) {
+		try {
+			if(conn != null && false == conn.getAutoCommit()) {
+				// 事务中的Session忽略关闭事件
+				return;
+			}
+		} catch (final SQLException e) {
+			log.error(e);
+		}
+
+		// 普通请求关闭（或归还）连接
+		ThreadLocalConnection.INSTANCE.close(this.ds);
+	}
+
 	@Override
 	public void close() {
 		closeConnection(null);