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  • springboot使用jpa,删除功能sql报错解决

    springboot使用jpa时报错:

     只有删除时报错了,

    "data": "删除失败,原因:Could not open JPA EntityManager for transaction; nested exception is javax.persistence.PersistenceException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 190,731 milliseconds ago. The last packet sent successfully to the server was 4 milliseconds ago.",
    "success": false

    解决方案:增加了配置:&failOverReadOnly=false

    对应中文环境,通常mysql连接URL可以设置为:
    jdbc:mysql://localhost:3306/test?user=root&password=&useUnicode=true&characterEncoding=gbk&autoReconnect=true&failOverReadOnly=false

    在使用数据库连接池的情况下,最好设置如下两个参数:
    autoReconnect=true&failOverReadOnly=false

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  • 原文地址:https://www.cnblogs.com/mabiao008/p/7475076.html
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