<!-- shiro -->
    <dependency>
      <groupId>org.apache.shiro</groupId>
      <artifactId>shiro-core</artifactId>
      <version>1.4.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.shiro</groupId>
      <artifactId>shiro-spring</artifactId>
      <version>1.4.0</version>
    </dependency>

  <!-- shiro 过滤器 start -->
  <filter>
    <filter-name>shiroFilter</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    <!-- 设置true由servlet容器控制filter的生命周期 -->
    <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>
  <!-- shiro 过滤器 end -->

/**
 * @author zhouguanglin
 * @date 2018/2/26 14:05
 */
public class CustomRealm extends AuthorizingRealm {
    /**
     * 授权
     * @param principalCollection
     * @return
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        String userName = (String) principalCollection.getPrimaryPrincipal();
        List<String> permissionList=new ArrayList<String>();
        permissionList.add("user:add");
        permissionList.add("user:delete");
        if (userName.equals("zhou")) {
            permissionList.add("user:query");
        }
        SimpleAuthorizationInfo info=new SimpleAuthorizationInfo();
        info.addStringPermissions(permissionList);
        info.addRole("admin");
        return info;
    }
    /**
     * 认证
     * @param authenticationToken
     * @return
     * @throws AuthenticationException
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        String userName = (String) authenticationToken.getPrincipal();
        if ("".equals(userName)) {
            return  null;
        }
        SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(userName,"123456",this.getName());
        return info;
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <!--开启shiro的注解-->
    <bean id="advisorAutoProxyCreator" class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator">
        <property name="proxyTargetClass" value="true"></property>
    </bean>
    <bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor"/>
    <!--注入自定义的Realm-->
    <bean id="customRealm" class="com.test.realm.CustomRealm"></bean>
    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <property name="realm" ref="customRealm"></property>
    </bean>

    <!--配置ShiroFilter-->
    <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
        <property name="securityManager" ref="securityManager"></property>
        <!--登入页面-->
        <property name="loginUrl" value="/login.jsp"></property>
        <!--登入成功页面-->
        <property name="successUrl" value="/index.jsp"/>
        <property name="filters">
            <map>
                <!--退出过滤器-->
                <entry key="logout" value-ref="logoutFilter" />
            </map>
        </property>
        <!--URL的拦截-->
        <property name="filterChainDefinitions" >
            <value>
                /share = authc
                /logout = logout
            </value>
        </property>

    </bean>
    <!--自定义退出LogoutFilter-->
    <bean id="logoutFilter" class="com.test.filter.SystemLogoutFilter">
        <property name="redirectUrl" value="/login"/>
    </bean>
</beans>

 <!-- 未认证或未授权时跳转必须在springmvc里面配，spring-shiro里的shirofilter配不生效 -->
    <bean   class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="exceptionMappings">
            <props>
                <!--表示捕获的异常 -->
                <prop key="org.apache.shiro.authz.UnauthorizedException">
                    <!--捕获该异常时跳转的路径 -->
                    /403
                </prop>
                <!--表示捕获的异常 -->
                <prop key="org.apache.shiro.authz.UnauthenticatedException">
                    <!--捕获该异常时跳转的路径 -->
                    /403
                </prop>
            </props>
        </property>
    </bean>

    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public String login(String userName, String passwd, Model model) {
        Subject subject = SecurityUtils.getSubject();
        UsernamePasswordToken token = new UsernamePasswordToken(userName, passwd);
        try {
            subject.login(token);
        } catch (UnknownAccountException e) {
            e.printStackTrace();
            model.addAttribute("userName", "用户名错误！");
            return "login";
        } catch (IncorrectCredentialsException e) {
            e.printStackTrace();
            model.addAttribute("passwd", "密码错误");
            return "login";
        }
        return "index";
    }