??? 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：

class="java"> <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.10</version>
    </dependency>
    
    <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.3</version>
        </dependency>
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.2.2</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.25</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>0.2.23</version>
        </dependency>
  </dependencies>

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1.2 加入shiro-core的jar包及依赖包

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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

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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

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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<SecurityManager> 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();

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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] 

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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

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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

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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

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