com.mysql.jdbc.PacketTooBigException: Packet for query is too large (1680 > 1024). You can change th
這個錯誤是因爲mysql的一個系統參數max_allowed_packet設置的值太小引發的mysql
解決這個錯誤的方法就是修改這個參數的值，linux
linux系統中咱們在etc目錄下找到my.cnf這個文件，打開這個文件後把max_allowed_packet = 1M 中的參數值1M改成4M，若是沒有這個參數那麼直接添加這行max_allowed_packet = 4M 就搞定了sql
添加完重啓mysql數據庫，重啓命令是service mysqld restart數據庫
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