Host is blocked because of many connection errors;unblock with 'mysqladmin flush-hosts'

阿里雲或者本地虛擬機在部署ssm項目的時候,瀏覽器一直在加載中…查看linux中tomcat的logs的日誌文件最顯眼的錯誤是NullPointerException.其餘的主要錯誤是:部分主要的錯誤截圖.通過在日誌得出是數據庫連接不到,主要原因是:Host is blocked because of many connection errors;unblock with ‘mysqladmin

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