Shiro使用步骤

URL权限过滤shiro安全框架：+ehcache缓存1、引入依赖pom.xml        <!-- Apache Shiro 权限架构 -->        <dependency>            <groupId>org.apache.shiro</groupId>            <artifactId>shiro-all</artifactId>            <version>1.2.3</version>        </dependency>2、核心filter，一个filter相当于10个filter；web.xml    注意：shiro的filter必须在struts2的filter之前，否则action无法创建    <!-- Shiro Security filter  filter-name这个名字的值将来还会在spring中用到  -->    <filter>        <filter-name>shiroFilter</filter-name>        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>        <init-param>            <param-name>targetFilterLifecycle</param-name>            <param-value>true</param-value>        </init-param>    </filter>    <filter-mapping>        <filter-name>shiroFilter</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>3、在spring applicationContext.xml中记载shiro配置文件,放在事务管理器之前配置<aop:aspectj-autoproxy proxy-target-class="true" />同时添加专门配置shiro的配置文件<import resource="spring/applicationContext-shiro.xml"/>和ehcache支持ehcache-shiro.xml<ehcache updateCheck="false" name="shiroCache">    <defaultCache            maxElementsInMemory="10000"            eternal="false"            timeToIdleSeconds="120"            timeToLiveSeconds="120"            overflowToDisk="false"            diskPersistent="false"            diskExpiryThreadIntervalSeconds="120"            /></ehcache>4、applicationContext-shiro.xml，配置校验的策略，哪些校验，哪些放行<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"           xmlns:p="http://www.springframework.org/schema/p"      xmlns:context="http://www.springframework.org/schema/context"       xmlns:tx="http://www.springframework.org/schema/tx"      xmlns:aop="http://www.springframework.org/schema/aop"      xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/aop        http://www.springframework.org/schema/aop/spring-aop.xsd        http://www.springframework.org/schema/tx        http://www.springframework.org/schema/tx/spring-tx.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd">    <description>Shiro的配置</description>    <!-- SecurityManager配置 -->    <!-- 配置Realm域 -->    <!-- 密码比较器 -->    <!-- 代理如何生成？ 用工厂来生成Shiro的相关过滤器-->    <!-- 配置缓存：ehcache缓存 -->    <!-- 安全管理 -->    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">        <!-- Single realm app.  If you have multiple realms, use the 'realms' property instead. -->        <property name="realm" ref="authRealm"/><!-- 引用自定义的realm -->        <!-- 缓存 -->        <property name="cacheManager" ref="shiroEhcacheManager"/>    </bean>    <!-- 自定义权限认证 -->    <bean id="authRealm" class="cn.itcast.jk.shiro.AuthRealm">        <property name="userService" ref="userService"/>        <!-- 自定义密码加密算法  -->        <property name="credentialsMatcher" ref="passwordMatcher"/>    </bean>    <!-- 设置密码加密策略 md5hash -->    <bean id="passwordMatcher" class="cn.itcast.jk.shiro.CustomCredentialsMatcher"/>    <!-- filter-name这个名字的值来自于web.xml中filter的名字 -->    <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">        <property name="securityManager" ref="securityManager"/>        <!--登录页面  -->        <property name="loginUrl" value="/index.jsp"></property>        <!-- 登录成功后 -->              <property name="successUrl" value="/home.action"></property>        <property name="filterChainDefinitions">            <!-- /**代表下面的多级目录也过滤 -->            <value>                /index.jsp* = anon                /home* = anon                /sysadmin/login/login.jsp* = anon                /sysadmin/login/logout.jsp* = anon                /login* = anon                /logout* = anon                /components/** = anon                /css/** = anon                /images/** = anon                /js/** = anon                /make/** = anon                /skin/** = anon                /stat/** = anon                /ufiles/** = anon                /validator/** = anon                /resource/** = anon                /** = authc                /*.* = authc            </value>        </property>    </bean>    <!-- 用户授权/认证信息Cache, 采用EhCache  缓存 -->    <bean id="shiroEhcacheManager" class="org.apache.shiro.cache.ehcache.EhCacheManager">        <property name="cacheManagerConfigFile" value="classpath:ehcache-shiro.xml"/>    </bean>    <!-- 保证实现了Shiro内部lifecycle函数的bean执行 -->    <bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/>    <!-- 生成代理，通过代理进行控制 -->    <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"          depends-on="lifecycleBeanPostProcessor">        <property name="proxyTargetClass" value="true"/>    </bean>    <!-- 安全管理器 -->    <bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor">        <property name="securityManager" ref="securityManager"/>    </bean></beans>5、自定义realm  AuthRealm在认证、授权内部实现机制中都有提到，最终处理都将交给Realm进行处理。因为在Shiro中，最终是通过Realm来获取应用程序中的用户、角色及权限信息的。通常情况下，在Realm中会直接从我们的数据源中获取Shiro需要的验证信息。可以说，Realm是专用于安全框架的DAO.public class AuthRealm extends AuthorizingRealm{    private UserService userService;    public void setUserService(UserService userService) {        this.userService = userService;    }    //授权    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {        System.out.println("授权");        //获取当前用户        User user = (User)principals.fromRealm(getName()).iterator().next();        //得到权限字符串        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();        Set<Role> roles = user.getRoles();        List<String> list = new ArrayList();        for(Role role :roles){            Set<Module> modules = role.getModules();            for(Module m:modules){                if(m.getCtype()==0){                    //说明是主菜单                    list.add(m.getCpermission());                }            }        }        info.addStringPermissions(list);        return info;    }    //认证  登录    protected AuthenticationInfo doGetAuthenticationInfo(            AuthenticationToken token) throws AuthenticationException {        System.out.println("认证");        UsernamePasswordToken upToken = (UsernamePasswordToken)token;        User user = userService.findUserByName(upToken.getUsername());        if(user==null){            return null;        }else{            AuthenticationInfo info = new SimpleAuthenticationInfo(user, user.getPassword(), getName());            return info;        }    }}6、修改传统登录为shiro登录package cn.itcast.jk.action;import org.apache.shiro.SecurityUtils;import org.apache.shiro.authc.UsernamePasswordToken;import org.apache.shiro.crypto.hash.Md5Hash;import org.apache.shiro.subject.Subject;import cn.itcast.common.SysConstant;import cn.itcast.jk.service.UserService;/** * @Description: 登录和推出类 * @Author:     传智播客 java学院 宋江 * @Company:    http://java.itcast.cn * @CreateDate: 2014年10月31日 */public class LoginAction extends BaseAction {    private static final long serialVersionUID = 1L;    private String username;    private String password;    private UserService userService;    public void setUserService(UserService userService) {        this.userService = userService;    }    public String login() throws Exception {            /*         * shiro登录方式：根据用户名获取密码，密码为null非法用户；有密码检查是否用户填写的密码         * 登录成功后无需往httpsession中存放当前用户，这样就跟web容器绑定，关联太紧密；它自己创建         * subject对象，实现自己的session。这个跟web容器脱离，实现松耦合。         */        //调用shiro判断当前用户是否是系统用户        Subject subject = SecurityUtils.getSubject();   //得到当前用户        //shiro是将用户录入的登录名和密码（未加密）封装到token对象中        UsernamePasswordToken token = new UsernamePasswordToken(userName,password);        try{            subject.login(token);   //自动调用AuthRealm.doGetAuthenticationInfo            //写seesion，保存当前user对象            User curUser = (User)subject.getPrincipal();            //从shiro中获取当前用户            System.out.println(curUser.getDept().getDeptName());    //让懒加载变成立即加载            Set<Role> roles = curUser.getRoles();            for(Role role :roles){                Set<Module> moduless =  role.getModules();                for(Module m :moduless)                   System.out.println(m.getName());            }            session.put(SysConstant.CURRENT_USER_INFO, curUser);    //Principal 当前用户对象        }catch(Exception ex){            super.put("errorInfo","用户名密码错误，请重新填写!");            ex.printStackTrace();            return "login";        }        return SUCCESS;    }    public String logout(){        session.remove(SysConstant.CURRENT_USER_INFO);      //删除session        return "logout";    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }}7、授权(另一种加载数据的思想   可省略因为在登录时已加载)根据用户查询出角色对应的权限，并返回权限串-hql，service    public List<String> getPermission(String userName) {        List<String> _list = new ArrayList<String>();        //用户，角色，权限，两级多对多，使用left join关联实现        String hql = "select p from User as u left join u.roles as r left join r.modules as p where u.username='"+userName+"'";        List<Module> moduleList = baseDao.find(hql, Module.class, null);        for(Module m : moduleList){            if(m!=null){    //观察hibernate实现的SQL，会多出一条Null记录                _list.add(m.getName());            }        }        return _list;    }在realm中进行授权userService.getPermission    //授权    protected AuthorizationInfo doGetAuthorizationInfo(            PrincipalCollection principals) {        log.info("执行授权...");        //获取登录用户的权限，配合jsp页面中的shiro标签进行控制        User curUser = (User) principals.fromRealm(getName()).iterator().next();          String userName = curUser.getUsername();        List<String> sList = userService.getPermission(userName );        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();        for(String permission : sList){            //设置当前用户的权限            authorizationInfo.addStringPermission(permission);        }        return authorizationInfo;    }8、页面使用shiro标签，/home/title.jsp 主菜单<%@ taglib uri="http://shiro.apache.org/tags" prefix="shiro"%>                        <shiro:hasPermission name="sysadmin">                        <span id="topmenu" onclick="toModule('sysadmin');">系统管理</span>                        </shiro:hasPermission>