; Field 'id' doesn't have a default value; nested exception is java.sql.SQLException: Field 'id' doesn't have a default value

这个错误是由于在数据库中设置的表的id字段没有设置默认值引起的。具体错误信息是"Field 'id' doesn't have a default value; nested exception is java.sql.SQLException: Field 'id' doesn't have a default value"。

解决这个问题的方法是在数据库中设置对应表的id字段为自动递增（auto-increment）。通过设置自动递增，可以让数据库在插入新记录时自动为id字段生成唯一的值，避免了手动指定id的麻烦。

另外，还需要确保在设置完自动递增后保存设置，以使设置生效。这样，在后续插入数据时就不会再出现"Field 'id' doesn't have a default value"的错误了。

如果你遇到了"Handler processing failed; nested exception is java.lang.NoClassDefFoundError"的错误，请注意检查相关的类或依赖是否存在或正确引入。这个错误通常是由于缺少相关的类文件或依赖导致的。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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