Field 'id' doesn't have a default value（jdbc连接错误）

JDBC 连接错误：　　编写数据库连接增添数据时，出现以下错误：　　error : java.sql.SQLException: Field ‘id‘ doesn‘t have a default value　　”id“不具有默认值。　 原因：　　所建立的数据表中属性”id“，设置的是”不允许为空“。在插入前没有值，不允许进行插入操作。　　解决方法：　　  1.将属性改为”允许为空“　　　2.给”id“属性设置一个默认值。

时间： 2024-10-27 18:54:46

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