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Username/Password Authentication
One of the most common ways to authenticate a user is by validating a username and password. As such, Spring Security provides comprehensive support for authenticating with a username and password.
Reading the Username & Password
Spring Security provides the following built in mechanisms for reading a username and password from the HttpServletRequest:
Storage Mechanisms
Each of the supported mechanisms for reading a username and password can leverage any of the supported storage mechanisms:
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Simple Storage with [servlet-authentication-inmemory]
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Relational Databases with [servlet-authentication-jdbc]
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Custom data stores with [servlet-authentication-userdetailsservice]
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LDAP storage with [servlet-authentication-ldap]