大家帮忙看下这个错误提示

2004-08-24 10:48:52 110 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

JS动态模拟Form表单提交数据分享知识传递快乐 JS动态模拟Form表单提交数据 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <button onclick="subForm()">提交</button> </body> &.. 阅读详情

我每次运行一个servlet时，都会出现下面的警告，到底是什么地方有问题呢？
<2004-8-24 上午10时41分44秒 CST> <Warning> <HTTP Session> <BEA-100061> <Web appl
ication: ServletContext(id=20814850,name=UserManager,context-path=/UserManager)
tried to place a non-serializable attribute: User into the session: Bqqo3zTaflCW
tNO2g6lHCJt8RDw609BJOLIU6Ji6plx0297HIUyp!-1000993077!1093315304938. This attribu
te will be lost upon redeployment. This message is logged only once per session.
>

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