Eclipse web应用程序如何验证数据库中的数据_Eclipse_Postgresql_Jakarta Ee

Eclipse web应用程序如何验证数据库中的数据

eclipse postgresql jakarta-ee

Eclipse web应用程序如何验证数据库中的数据,eclipse,postgresql,jakarta-ee,Eclipse,Postgresql,Jakarta Ee,我是JEE新手，我想创建一个身份验证应用程序，通过servlet验证postgres数据库中的登录名和密码。请提供任何帮助。我将向您介绍这些步骤，您必须对其进行编码 1/ get the login info 2/ do a select inside your database with the user info (select * from table where user = login AND password == password) 3.1/ if you get 0 result

我是JEE新手，我想创建一个身份验证应用程序，通过servlet验证postgres数据库中的登录名和密码。请提供任何帮助。我将向您介绍这些步骤，您必须对其进行编码

1/ get the login info
2/ do a select inside your database with the user info (select * from table where user = login AND password == password)
3.1/ if you get 0 result, your user doesn't exist or he doesn't provide the valids information
3.2/ if you get more than 1 result, you got a problem with your database (maybe your login isn't unique)
3.3/ if you got only one result, your user exist with this information !

当然，您必须使用sha1+盐存储密码

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