1、Shiro ——Helloworld

简介 

Shiro 官网：http://shiro.apache.org/

Shiro 可以完成：认证、授权、加密、会话管理、与 Web 集成、缓存等。

新建 maven 项目，加入依赖

<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-all</artifactId>
    <version>1.3.2</version>
</dependency>

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.15</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.6.1</version>
</dependency>

在 resources 目录下新建 shiro.ini 配置文件 users 是用户，roles是角色

[users]
# user 'root' with password 'secret' and the 'admin' role
root = secret, admin
# user 'guest' with the password 'guest' and the 'guest' role
guest = guest, guest
# user 'presidentskroob' with password '12345' ("That's the same combination on
# my luggage!!!" ;)), and role 'president'
presidentskroob = 12345, president
# user 'darkhelmet' with password 'ludicrousspeed' and roles 'darklord' and 'schwartz'
darkhelmet = ludicrousspeed, darklord, schwartz
# user 'lonestarr' with password 'vespa' and roles 'goodguy' and 'schwartz'
lonestarr = vespa, goodguy, schwartz

# -----------------------------------------------------------------------------
# Roles with assigned permissions
# 
# Each line conforms to the format defined in the
# org.apache.shiro.realm.text.TextConfigurationRealm#setRoleDefinitions JavaDoc
# -----------------------------------------------------------------------------
[roles]
# 'admin' role has all permissions, indicated by the wildcard '*'
admin = *
# The 'schwartz' role can do anything (*) with any lightsaber:
schwartz = lightsaber:*
# The 'goodguy' role is allowed to 'delete' (action) the user (type) with
# license plate 'zhangsan' (instance specific id)
# goodguy ：user 这个用户可以对 zhangsan 进行删除
# user：类型
# delete：行为
# zhangsan：id
goodguy = user:delete:zhangsan

日志文件 log4j.properties

log4j.rootLogger=INFO, 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

# General Apache libraries
log4j.logger.org.apache=WARN

# Spring
log4j.logger.org.springframework=WARN

# Default Shiro logging
log4j.logger.org.apache.shiro=TRACE

# Disable verbose logging
log4j.logger.org.apache.shiro.util.ThreadContext=WARN
log4j.logger.org.apache.shiro.cache.ehcache.EhCache=WARN

演示示例

package com.atguigu.shiro;

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;

/**
 * Shiro 官方提供的示例,简单的演示如何使用Shiro
 */
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);

        //  调用 SecurityUtils.getSubject() 获取当前的 subject
        Subject currentUser = SecurityUtils.getSubject();

        // 测试使用 session
        // 获取 Session：Subject#getSession()
        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 + "]");
        }

        // 测试当前的用户是否已经被认证，即是否已经登录
        // 调用 Subject 的 isAuthenticated()
        if (!currentUser.isAuthenticated()){
            // 把用户名和密码封装成 UsernamePasswordToken 对象
            UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
            // rememberme
            token.setRememberMe(true);

            try {
                // 调用 Subject 的 login 方法，执行登录
                currentUser.login(token);
            }
            // 若没有指定的账户，则 Shiro 会抛出 UnknownAccountException 异常
            catch (UnknownAccountException uae) {
                log.error("There is no user with username of " + token.getPrincipal());
                return;
            }
            //  若账户存在，但密码不匹配，则 shiro 会抛出 IncorrectCredentialsException 异常
            catch (IncorrectCredentialsException ice) {
                log.error("Password for account " + token.getPrincipal() + " was incorrect!");
                return;
            }
            // 用户被锁定的异常
            catch (LockedAccountException lae) {
                log.error("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?
            // 所有认证时异常的父类
            catch (AuthenticationException ae) {
            }
        }

        // 已经登录
        log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");

        // 测试是否有某一个角色，调用 Subject 的 hasRole()
        if (currentUser.hasRole("schwartz")){
            log.info("May the Schwartz be with you!");
        } else {
            log.error("Hello, mere mortal.");
        }

        // 测试某个用户是不是具备某个行为权限,调用 Subject 的 isPermitted()
        if (currentUser.isPermitted("lightsaber:weild")) {
            log.info("You may use a lightsaber ring.  Use it wisely.");
        } else {
            log.error("Sorry, lightsaber rings are for schwartz masters only.");
        }

        // 也是测试用是否具备某一个行为，比上面更具体
        // 当前用户可以对 user 类型下的 zhangsan 进行删除操作
        if (currentUser.isPermitted("user:delete:zhangsan")) {
            log.info("----> You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  " +
                    "Here are the keys - have fun!");
        } else {
            log.error("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");
        }

        // 执行退出，调用 Subject 的 logout() 方法
        System.out.println("测试 logout 方法，用户是否认证，退出前---->" + currentUser.isAuthenticated());
        currentUser.logout();
        System.out.println("测试 logout 方法，用户是否认证，退出后---->" + currentUser.isAuthenticated());

        System.exit(0);

    }
}