Im working in a Web App with Java and JSF. I have a simple login, if it finds the user in the database it creates a session and stores some information on it. That works great. The thing is, I want to avoid two different people using the same user name and password at the same time. Something like account sharing. Only one user logged at one time. I have been thinking this but I can t find the correct approach.
事先感谢你们的所有帮助。
我认为,一种方式是将一个 b形田地(<>条码>挂号_in输入数据库,一旦某人在某一日志或某届会议到期时,即予以确认。 使人很容易去做时,便会弄错。 本届会议的会期已经结束,我相信会利用共同财产基金,在用户登录后,有一份会议复印机管理有关用户的信息。 您可以采用@Prestroy 方法,用于管理豆类,并请其将田地划为假地,然后在会议过期时予以删除。
当有人通过标识小组向服务器发送“用户名称”和“密码”时,你才需要检查<代码>是否贴上<<>条/代码>。 外地是真实的。
你们可以建立一个应用范围广的灯,以便跟踪目前用户对网络应用的标识。 如果一个信标在适用范围内,所有客户的所有申请/答复周期都将使用相同的信标。
您可在此申请中宣布
每当用户成功登录时,将其用户信息输入HashSet。 每当用户登录时,便将其用户信息从<代码>HashSet上删除。 用户会议过期使用<代码> HttpSessionListener 或@Destroy,以记录这一活动,并从
关于如何利用本届会议结束的活动,请参阅。 页: 1
For how to force an application-scoped bean to instantiate when the webapps starts , you can refer to this
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