apache shiro简单经典例子

 

 

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<SecurityManager> 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<SecurityManager> 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.");
        }

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