apache shiro简单经典例子

xlid

　　注：大部分内容摘录Apache shiro使用手册

• import org.apache.shiro.SecurityUtils;  
  
• import org.apache.shiro.authc.*;  
  
• import org.apache.shiro.config.IniSecurityManagerFactory;  
  
• import org.apache.shiro.mgt.SecurityManager;  
  
• import org.apache.shiro.session.Session;  
  
• import org.apache.shiro.subject.Subject;  
  
• import org.apache.shiro.util.Factory;  
  
• import org.slf4j.Logger;  
  
• import org.slf4j.LoggerFactory;  
  
• 
  
• public class Quickstart {  
  
• 
  
•     private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);  
  
• 
  
•     public static void main(String[] args) {   
  
•         Factory factory = new IniSecurityManagerFactory("classpath:shiro.ini");  
  
•         SecurityManager securityManager = factory.getInstance();  
  
•         SecurityUtils.setSecurityManager(securityManager);  
  
•         Subject currentUser = SecurityUtils.getSubject();  
  
•         Session session = currentUser.getSession();  
  
•         session.setAttribute("someKey", "aValue");  
  
•         String value = (String) session.getAttribute("someKey");  
  
•         if (value.equals("aValue")) {  
  
•             log.info("Retrieved the correct value! [" + value + "]");  
  
•         }  
  
•         if (!currentUser.isAuthenticated()) {  
  
•             UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");  
  
•             token.setRememberMe(true);  
  
•             try {  
  
•                 currentUser.login(token);  
  
•             } catch (UnknownAccountException uae) {  
  
•                 log.info("There is no user with username of " + token.getPrincipal());  
  
•             } catch (IncorrectCredentialsException ice) {  
  
•                 log.info("Password "+token.getCredentials() +"for account " + token.getPrincipal() + " was incorrect!");  
  
•             } catch (LockedAccountException lae) {  
  
•                 log.info("The account for username " + token.getPrincipal() + " is locked.  " +  
  
•                         "Please contact your administrator to unlock it.");  
  
•             }  
  
•             catch (AuthenticationException ae) {  
  
• 
  
•             }  
  
•         }  
  
• 
  
•         log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");  
  
•         if (currentUser.hasRole("schwartz")) {  
  
•             log.info("May the Schwartz be with you!");  
  
•         } else {  
  
•             log.info("Hello, mere mortal.");  
  
•         }  
  
• 
  
•         if (currentUser.isPermitted("lightsaber:weild")) {  
  
•             log.info("You may use a lightsaber ring.  Use it wisely.");  
  
•         } else {  
  
•             log.info("Sorry, lightsaber rings are for schwartz masters only.");  
  
•         }  
  
•         if (currentUser.isPermitted("winnebago:drive:eagle5")) {  
  
•             log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  " +  
  
•                     "Here are the keys - have fun!");  
  
•         } else {  
  
•             log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");  
  
•         }  
  
•         //currentUser.logout();  
  
•         System.exit(0);  
  
•     }  
  
• }  
  
• 
  

　　程序大意解读：
　　1. Factory factory = new IniSecurityManagerFactory("classpath:shiro.ini");
    SecurityManager securityManager = factory.getInstance();
　　读取配置文件获取SecurityManager实例；
　　2. SecurityUtils.setSecurityManager(securityManager);
    Subject currentUser = SecurityUtils.getSubject();
    Session session = currentUser.getSession();
　　securityManager作为参数获取“当前操作用户”currentUser ，获取当前用户（被shiro框架封装好）的session实例；
　　3.  UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
     token.setRememberMe(true);
　　生成用户名/密码口令，并选择了记住我（实用cookie保存了帐号的信息）；
　　4. log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");
        if (currentUser.hasRole("schwartz")) {
            log.info("May the Schwartz be with you!");
        } else {
            log.info("Hello, mere mortal.");
        }
　　        if (currentUser.isPermitted("lightsaber:weild")) {
            log.info("You may use a lightsaber ring.  Use it wisely.");
        } else {
            log.info("Sorry, lightsaber rings are for schwartz masters only.");
        }
　　获取当前登录帐号的信息，判断当前帐号的的角色和所对应的权限