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mysql中的字段问题
2022-07-03 13:01:00 【永远的HelloWorld】
mysql的数据库中的字段类型为datetime，通常是正常的时间类型，比如：2021-04-11 18：10:06或者null，但有时候在导入数据的时候这个字段的值会变为0000-00-00 00:00:00，这种情况下查询就出现错误。这是因为0000-00-00 00:00:00在数据库是允许出现的特殊值，但是会被jvm认为不合法的。
解决办法：
1.避免数据库出现这个时间
2.在数据库的链接url后面加上 &&zeroDateTimeBehavior=convertToNull
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