测试通过，感觉初步学会通过shiro对用户登录进行认证。这里记录下测试遇见的问题及解决方法。
1. 入门程序（用户登录和退出）
1.1 创建maven工程
开发环境：MyEclipse
jdk版本：1.8
添加pom依赖如下：
junit
junit
4.10
commons-logging
commons-logging
1.1.3
org.apache.shiro
shiro-core
1.2.2
mysql
mysql-connector-java
5.1.25
1.2 加入shiro-core的jar包及依赖包
1.3 log4j.properties日志配置文件
log4j.rootLogger=debug, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m %n
1.4 shiro.ini
在classpath创建shiro.ini文件，将用户名、密码配置在文件中。
[users]
zhangsan=123
lisi=123
1.5 认证登录退出代码testHelloworld()
构建SecurityManager工厂，IniSecurityManagerFactory可以从ini文件中初始化SecurityManager环境。
再通过工厂创建securityManager，将其设置到运行环境中。再通过securitymanager创建一个subject实例。
接下来创建token令牌，记录用户认证的身份和凭证（即用户名和密码）。
subject与token里信息比对，验证是否通过。
最后用户退出。
@Test
public void testHelloworld(){
Factory factory = new IniSecurityManagerFactory("classpath:shiro.ini");
SecurityManager securityManager =factory.getInstance();
SecurityUtils.setSecurityManager(securityManager);
Subject subject = SecurityUtils.getSubject();
UsernamePasswordToken token = new UsernamePasswordToken("zhangsan","123");
try{
subject.login(token);
System.out.println("验证成功");
} catch (AuthenticationException e){
System.out.println("验证失败");
}
Assert.assertEquals(true, subject.isAuthenticated());
subject.logout();
1.6 测试结果
使用JUnit进行单元测试结果如下：
1. 验证通过：
2017-11-08 16:16:26,891 DEBUG [org.apache.shiro.io.ResourceUtils] - Opening resource from class path [shiro.ini]
2017-11-08 16:16:26,896 DEBUG [org.apache.shiro.config.Ini] - Parsing [users]
2017-11-08 16:16:26,897 DEBUG [org.apache.shiro.config.IniFactorySupport] - Creating instance from Ini [sections=users]
2017-11-08 16:16:26,924 DEBUG [org.apache.shiro.realm.text.IniRealm] - Discovered the [users] section. Processing...
2017-11-08 16:16:26,931 DEBUG [org.apache.shiro.realm.AuthenticatingRealm] - Looked up AuthenticationInfo [zhangsan] from doGetAuthenticationInfo
2017-11-08 16:16:26,931 DEBUG [org.apache.shiro.realm.AuthenticatingRealm] - AuthenticationInfo caching is disabled for info [zhangsan]. Submitted token: [org.apache.shiro.authc.UsernamePasswordToken - zhangsan, rememberMe=false].
2017-11-08 16:16:26,931 DEBUG [org.apache.shiro.authc.credential.SimpleCredentialsMatcher] - Performing credentials equality check for tokenCredentials of type [[C and accountCredentials of type [java.lang.String]
2017-11-08 16:16:26,931 DEBUG [org.apache.shiro.authc.credential.SimpleCredentialsMatcher] - Both credentials arguments can be easily converted to byte arrays. Performing array equals comparison
2017-11-08 16:16:26,931 DEBUG [org.apache.shiro.authc.AbstractAuthenticator] - Authentication successful for token [org.apache.shiro.authc.UsernamePasswordToken - zhangsan, rememberMe=false]. Returned account [zhangsan]
2017-11-08 16:16:26,932 DEBUG [org.apache.shiro.subject.support.DefaultSubjectContext] - No SecurityManager available in subject context map. Falling back to SecurityUtils.getSecurityManager() lookup.
2017-11-08 16:16:26,932 DEBUG [org.apache.shiro.subject.support.DefaultSubjectContext] - No SecurityManager available in subject context map. Falling back to SecurityUtils.getSecurityManager() lookup.
2017-11-08 16:16:26,932 DEBUG [org.apache.shiro.session.mgt.AbstractValidatingSessionManager] - No sessionValidationScheduler set. Attempting to create default instance.
2017-11-08 16:16:26,933 INFO [org.apache.shiro.session.mgt.AbstractValidatingSessionManager] - Enabling session validation scheduler...
2017-11-08 16:16:26,937 DEBUG [org.apache.shiro.session.mgt.DefaultSessionManager] - Creating new EIS record for new session instance [org.apache.shiro.session.mgt.SimpleSession,id=null]
验证成功
2017-11-08 16:16:27,005 DEBUG [org.apache.shiro.mgt.DefaultSecurityManager] - Logging out subject with primary principal zhangsan
2017-11-08 16:16:27,005 DEBUG [org.apache.shiro.session.mgt.AbstractSessionManager] - Stopping session with id [a5706acf-e514-48cb-82de-51fe8bf85883]
2. 用户名不存在：
2017-11-08 16:18:23,819 DEBUG [org.apache.shiro.io.ResourceUtils] - Opening resource from class path [shiro.ini]
2017-11-08 16:18:23,824 DEBUG [org.apache.shiro.config.Ini] - Parsing [users]
2017-11-08 16:18:23,826 DEBUG [org.apache.shiro.config.IniFactorySupport] - Creating instance from Ini [sections=users]
2017-11-08 16:18:23,853 DEBUG [org.apache.shiro.realm.text.IniRealm] - Discovered the [users] section. Processing...
2017-11-08 16:18:23,864 DEBUG [org.apache.shiro.realm.AuthenticatingRealm] - Looked up AuthenticationInfo [null] from doGetAuthenticationInfo
2017-11-08 16:18:23,864 DEBUG [org.apache.shiro.realm.AuthenticatingRealm] - No AuthenticationInfo found for submitted AuthenticationToken [org.apache.shiro.authc.UsernamePasswordToken - zhangsanihfd, rememberMe=false]. Returning null.
验证失败
3. 密码错误：
2017-11-08 16:19:42,926 DEBUG [org.apache.shiro.io.ResourceUtils] - Opening resource from class path [shiro.ini]
2017-11-08 16:19:42,930 DEBUG [org.apache.shiro.config.Ini] - Parsing [users]
2017-11-08 16:19:42,931 DEBUG [org.apache.shiro.config.IniFactorySupport] - Creating instance from Ini [sections=users]
2017-11-08 16:19:42,956 DEBUG [org.apache.shiro.realm.text.IniRealm] - Discovered the [users] section. Processing...
2017-11-08 16:19:42,963 DEBUG [org.apache.shiro.realm.AuthenticatingRealm] - Looked up AuthenticationInfo [zhangsan] from doGetAuthenticationInfo
2017-11-08 16:19:42,963 DEBUG [org.apache.shiro.realm.AuthenticatingRealm] - AuthenticationInfo caching is disabled for info [zhangsan]. Submitted token: [org.apache.shiro.authc.UsernamePasswordToken - zhangsan, rememberMe=false].
2017-11-08 16:19:42,963 DEBUG [org.apache.shiro.authc.credential.SimpleCredentialsMatcher] - Performing credentials equality check for tokenCredentials of type [[C and accountCredentials of type [java.lang.String]
2017-11-08 16:19:42,964 DEBUG [org.apache.shiro.authc.credential.SimpleCredentialsMatcher] - Both credentials arguments can be easily converted to byte arrays. Performing array equals comparison
验证失败
1.7 总结
这里用户名、密码仅是通过配置文件写好，验证过程直接通过明文匹配，接下来实现通过Realm配置用户名、密码等信息，通过MD5生成散列信息匹配。
源代码：https://github.com/DesFirefly/shiro