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JavaWeb统一异常处理\toc\处理方案1\.xml文件配置方式web.xml配置<errorpage<errorcode404</errorcode<location/404</location

Django重写用户模型报错hasnoattribute'USERNAME\_FIELD'\TOC\在重写用户模型时报错：AttributeError:typeobject‘UserProfile’hasnoattribute‘U

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