我知道的有三種原因
1.權限不夠：
解決辦法：
執行查詢
GRANT ALL PRIVILEGES ON 數據庫名.* TO root@'%' IDENTIFIED BY '密碼' WITH GRANT OPTION;
2.連接數據庫的配置文件，某個屬性后面多了個空格
3.服務器可能同時運行了兩個項目沖突了
免責聲明！
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