shiro入门实例，基于ini配置

基于ini或者关系数据库的，其实都是一样的，重要的是思想。

# =============================================================================
# Tutorial INI configuration
#
# Usernames/passwords are based on the classic Mel Brooks' film "Spaceballs" :)
# =============================================================================

# -----------------------------------------------------------------------------
# Users and their (optional) assigned roles
# 用户名以及所指定的角色
# username = password, role1, role2, ..., roleN
# 用户名 = 密码，角色1，角色2，...,角色N
# -----------------------------------------------------------------------------
[users]
root = secret, admin
guest = guest, guest
presidentskroob = 12345, president
darkhelmet = ludicrousspeed, darklord, schwartz
lonestarr = vespa, goodguy, schwartz

# -----------------------------------------------------------------------------
# Roles with assigned permissions
# roleName = perm1, perm2, ..., permN
# -----------------------------------------------------------------------------
[roles]
admin = *
schwartz = lightsaber:*
goodguy = winnebago:drive:eagle5

配置 文件基于电影Spaceballs命名。

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 Tutorial {

    private static final transient Logger log = LoggerFactory.getLogger(Tutorial.class);

    public static void main(String[] args) {
        log.info("My First Apache Shiro Application");

        Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
        SecurityManager securityManager = factory.getInstance();
        SecurityUtils.setSecurityManager(securityManager);

        // get the currently executing user:
        Subject currentUser = SecurityUtils.getSubject();

        // Do some stuff with a Session (no need for a web or EJB container!!!)
        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 + "]");
        }

        // let's login the current user so we can check against roles and permissions:
        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 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 more exceptions here (maybe custom ones specific to your application?
            catch (AuthenticationException ae) {
                //unexpected condition?  error?
            }
        }

        //say who they are:
        //print their identifying principal (in this case, a username):
        log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");

        //test a role:
        if (currentUser.hasRole("schwartz")) {
            log.info("May the Schwartz be with you!");
        } else {
            log.info("Hello, mere mortal.");
        }

        //test a typed permission (not instance-level)
        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.");
        }

        //a (very powerful) Instance Level permission:
        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!");
        }

        //all done - log out!
        currentUser.logout();

        System.exit(0);
    }
}

我们使用Shiro的IniSecurityManagerFactory实现来获取位于类路径根目录的shiro.ini文件。 该实现反映了Shiro对工厂方法设计模式的支持。 classpath：前缀是一个资源指示器，告诉shiro从哪里加载ini文件（其他前缀，如url：和file：也受支持）。调用factory.getInstance（）方法，该方法解析INI文件并返回反映配置的SecurityManager实例。

如果您希望在当前与应用程序的会话期间向用户提供内容，则可以获取其会话

Session session = currentUser.getSession();
session.setAttribute( "someKey", "aValue" );

Session是一个特定于Shiro的实例，它提供了你对常规HttpSession习惯的大部分内容，但有一些额外的好处和一个很大的区别：它不需要HTTP环境！

如果在Web应用程序内部署，默认情况下Session将基于HttpSession。但是，在非Web环境中，如此简单的教程应用程序，Shiro默认会自动使用其企业会话管理。这意味着无论部署环境如何，您都可以在任何层中的应用程序中使用相同的API！这打开了一个全新的应用程序世界，因为任何需要会话的应用程序都不需要被强制使用HttpSession。