shiro系列三、ssm框架整合shiro实现权限控制

shiro权限框架是一个非常优秀的框架，前面的几篇文章对shiro进行了非常详细的介绍和原理分析，那么接下来让我们开始在web项目中使用它（javase也能用shiro）；

一、数据库表结构设计

二、准备好一个ssm工程，然后导入shiro的jar包开始shiro整合的第一步

<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-core</artifactId>
    <version>1.3.</version>
</dependency>
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-spring</artifactId>
    <version>1.3.</version>
</dependency>

三、在web.xml中配置shiro的过滤器

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0" id="WebApp_1527585894345">
    <display-name>shiroDemo</display-name>
    <!-- Spring和mybatis的配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-mybatis.xml</param-value>
    </context-param>  

    <!-- shiro过滤器定义 -->
　　 <!-- 配置Shiro过滤器,先让Shiro过滤系统接收到的请求 --> 
　　 <!-- 这里filter-name必须对应applicationContext.xml中定义的<bean id="shiroFilter"/> --> 
    <!-- 使用[/*]匹配所有请求,保证所有的可控请求都经过Shiro的过滤 --> 
    <!-- 通常会将此filter-mapping放置到最前面(即其他filter-mapping前面),以保证它是过滤器链中第一个起作用的 -->
    <filter>
        <filter-name>shiroFilter</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
        <init-param>
            <!-- 该值缺省为false,表示生命周期由SpringApplicationContext管理,设置为true则表示由ServletContainer管理 -->
            <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>

    <!-- 编码过滤器 -->
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!-- Spring监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 防止Spring内存溢出监听器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>  

    <!-- Spring MVC servlet -->
    <servlet>
        <servlet-name>SpringMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
    </servlet>
    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>  

</web-app>

四、添加spring-shiro.xml配置文件，进行shiro的配置 也可以使用java类注入bean进行配置,这里为了配置的统一性就用了xml进行配置

<?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:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd
                        http://www.springframework.org/schema/mvc
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

     <!-- 配置shiroFilter -->
　　　<!-- 注意这里的shiroFilter要和web.xml中定义的shiro过滤器的id相同，否则会报错-->
      <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
          <!-- 装配 securityManager -->
          <property name="securityManager" ref="securityManager" />
          <!-- 配置登陆页面 -->
          <property name="loginUrl" value="/login.html"/>
          <!-- 配置shiro的过滤器链 -->
        <property name="filterChainDefinitions">
            <value>
                /login.html = anon
                /statics/** = anon
                /sys/login = anon
            </value>
        </property>

      </bean>

    <!-- 配置进行认证和授权的realm -->
    <bean id="userRealm" class="com.superman.shiro.UserRealm"/>

    <!-- 配置安全管理器 -->
    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <property name="realm" ref="userRealm"/>
    </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"/>  

    <!-- 开启Shiro注解 -->
    <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator" depends-on="lifecycleBeanPostProcessor"/>
          <bean class="org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor">
        <property name="securityManager" ref="securityManager"/>
    </bean>

</beans>

五、 添加登录控制器

package com.superman.controller;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.LockedAccountException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class LoginController {

    /**
     * 登录
     * @throws Exception
     */
    @ResponseBody
    @RequestMapping(value = "/sys/login", method = RequestMethod.GET)
    public String login(String username, String password, String captcha)throws Exception {
        ModelAndView mv=new ModelAndView("login");
        try{

            Subject subject = SecurityUtils.getSubject();
            UsernamePasswordToken token = new UsernamePasswordToken(username, password);
            subject.login(token);
        }catch (UnknownAccountException e) {
            return e.getMessage();
        }catch (IncorrectCredentialsException e) {
            return "账号或密码不正确";
        }catch (LockedAccountException e) {
            return "账号已被锁定,请联系管理员";
        }catch (AuthenticationException e) {
            return "账户验证失败";
        }
        return null;
    }

}