Add information to the subject on apache shiro - shiro

Question

Im using apache shiro. When i want to know if the user have permissions and roles i use SecutiryUtils.getSubject(). I like to know how to add more information to the subject like email, primary key and any other business information that i need so i can retrieve that information when necessary.
This is my shiro.ini:
[main]
ds = org.apache.shiro.jndi.JndiObjectFactory
ds.requiredType = javax.sql.DataSource
ds.resourceName = java:/comp/env/jdbc/myDS
# JDBC realm config
jdbcRealm = com.mycompany.JdbcRealmImpl
jdbcRealm.permissionsLookupEnabled = true
jdbcRealm.authenticationQuery = SELECT password FROM user WHERE username = ? AND status = 1
jdbcRealm.dataSource = $ds
sha256Matcher = org.apache.shiro.authc.credential.Sha256CredentialsMatcher
jdbcRealm.credentialsMatcher = $sha256Matcher
[urls]
/logout = logout
/** = authcBasic
This is my JdbcRealm
public class JdbcRealmImpl extends JdbcRealm {
public JdbcRealmImpl() {
super();
}
#Override
protected AuthenticationInfo doGetAuthenticationInfo(
final AuthenticationToken token) throws AuthenticationException {
final AuthenticationInfo info = super.doGetAuthenticationInfo(token);
// create a user to test
final User user = new User();
user.setId(11111);
return new SimpleAuthenticationInfo(user, info.getCredentials(),
getName());
}
}
And here is the code where i try to retrieve the user info.
final Subject currentUser = SecurityUtils.getSubject();
final User user = (User) currentUser.getPrincipal();
// null
System.out.println(user);

Answer 1

You should just put that in a database and retrieve it using the Subjects username (for example an emailaddress).