解决shiro报Possible unexpected error异常信息

学习shiro,采用了.ini初始化配置文件来充当数据库角色.在学习shiro使用ini过程报如下错误信息:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
-----认证失败-----
org.apache.shiro.authc.AuthenticationException: Authentication failed for token submission [org.apache.shiro.authc.UsernamePasswordToken - admin, rememberMe=false].  Possible unexpected error? (Typical or expected login exceptions should extend from AuthenticationException).
	at org.apache.shiro.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:214)
	at org.apache.shiro.mgt.AuthenticatingSecurityManager.authenticate(AuthenticatingSecurityManager.java:106)
	at org.apache.shiro.mgt.DefaultSecurityManager.login(DefaultSecurityManager.java:270)
	at org.apache.shiro.subject.support.DelegatingSubject.login(DelegatingSubject.java:256)
	at com.stydy.shiro.HelloShiro.main(HelloShiro.java:25)
Caused by: java.lang.IllegalStateException: Configuration error:  No realms have been configured!  One or more realms must be present to execute an authentication attempt.
	at org.apache.shiro.authc.pam.ModularRealmAuthenticator.assertRealmsConfigured(ModularRealmAuthenticator.java:161)
	at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doAuthenticate(ModularRealmAuthenticator.java:264)
	at org.apache.shiro.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:198)
	... 4 more

 错误原因为没有遵循相应的固定写法,如下错误写法:

#定义实体对象
[user]
#定义实体对象属性
userName=shiro
passward=123456

 正确写法:

#固定写法-创建用户对象
[users]
#创建用户名为shiro密码为123456的key-value形式数据
shiro=123456