Shiro授权

最新推荐文章于 2024-10-23 19:46:59 发布

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Shiro的授权有两种授权，一种是在配置文件中配置，一种是利用注解来完成授权

第一种，我们想要实现授权，首先得让我们的MyRealm这个继承AuthorizationRealm这个它里面有一个授权的方法

  @Override
    /*这个方法是授权的方法*/
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
       
    }

首先，我们要在Spring的applicationContext.xml配置角色

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

   <!--配置securityManager的bean-->
    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <!--配置Shiro缓存 -->
        <property name="cacheManager" ref="cacheManager"/>
        <!--调用配置策略的时候要放在realms前面-->
        <property name="authenticator" ref="authenticator"/>

        <!--配置realm（这个非常的重要）-->
        <property name="realm" ref="jdbcRealm"/>
       
    </bean>
    
    <!--配置缓存-->
    <bean id="cacheManager" class="org.apache.shiro.cache.ehcache.EhCacheManager">
        <property name="cacheManagerConfigFile" value="classpath:ehcache.xml"/>
    </bean>
    <!--配置Realm-->
    <bean id="jdbcRealm" class="org.peter.realm.MyRealm">
        
    </bean>
  
    <!--配置Spring去管理Shiro中的bean的生命周期-->
    <bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/>

    <!--开启Shiro的注解使用-->
    <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>

    <!--配置页面过滤规则-->
    <!--web.xml中filter-name的名字要和ShiroFilterFactoryBean的id一样，不一样会出错-->
    <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
        <property name="securityManager" ref="securityManager"/>
        <!--配置登录页面-->
        <property name="loginUrl" value="/Login.jsp"/>
        <!--配置登录成功后的页面-->
        <property name="successUrl" value="/index.jsp"/>
        <!--配置没有获得访问权限的页面-->
        <property name="unauthorizedUrl" value="/unauthorized.jsp"/>

        <property name="filterChainDefinitions">
            <value>
                <!--anon 表示Login.jsp可以匿名访问-->
                /Login.jsp = anon
                /login=anon
                <!--配置退出-->
                /logout=logout

               <!--配置角色-->
                /user.jsp=roles[user]
                /admin.jsp=roles[admin]
                <!--authc表示剩余的页面必须在登录后访问-->
                /** = authc
            </value>
        </property>
    </bean>
</beans>

第二步：配置MyRealm的类

package org.peter.realm;

import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.crypto.hash.SimpleHash;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;

import java.util.HashSet;
import java.util.Set;

/**
 * Created by Lenovo on 2017/8/1.
 */
public class MyRealm extends AuthorizingRealm {
    @Override
    public String getName() {
        return "MyRealm";
    }

    @Override
    public boolean supports(AuthenticationToken token) {
        return token instanceof UsernamePasswordToken;
    }

    // MD5消息摘要（密码加密）
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token1) throws AuthenticationException {
        UsernamePasswordToken token = (UsernamePasswordToken) token1;
        /*获取到用户名*/
        String username = token.getUsername();
        if ("zs".equals(username)){
            throw new UnknownAccountException("用户名不存在");
        }
        if ("ls".equals(username)){
            throw new LockedAccountException("该用户已经被锁");
        }
        // 取数据库中在查询
        // ....................
        Object credentials = null;
        if ("admin".equals(username)){
            credentials="c41d7c66e1b8404545aa3a0ece2006ac";
        }else if("wangwu".equals(username)){
            credentials="b6f8daff78cfcb486454e6914e666c71";
        }

        ByteSource credentialsSalt = ByteSource.Util.bytes(username);
        SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(username, credentials,credentialsSalt, getName());
        return info;
    }

    public static void main(String[] args) {
//      解密：
        ByteSource salt = ByteSource.Util.bytes("wangwu");
        SimpleHash simpleHash = new SimpleHash("MD5","123",salt,1024);
        System.out.println(simpleHash);
    }

    @Override
    /*这个方法是授权的方法*/
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        Object principal = principalCollection.getPrimaryPrincipal();
        Set<String> roles = new HashSet<>();
        roles.add("user");
        if ("admin".equals(principal)){
            roles.add("admin");
        }
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo(roles);
        return info;
    }
}

第三步：再利用Shiro的标签来实现相应的角色可以看到相应的jsp

<%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags" %>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>欢迎页面</title>
  </head>
  <body>
  <h1>热烈欢迎</h1>
  <a href="/test">test</a>
  welcome<shiro:principal/><br>
  <a href="/logout">退出</a><br>
  <shiro:hasRole name="admin">
  <a href="/admin.jsp">admin.jsp</a><br>
  </shiro:hasRole>
  <shiro:hasRole name="user">
  <a href="/user.jsp">user.jsp</a><br>
  </shiro:hasRole>
  </body>
</html>

Shiro的第二种注解的方式实现授权

为了看到Shiro注解实现授权

第一步：创建一个MyService类，里面定义一个Test方法

package org.peter.service;

import org.apache.shiro.authz.annotation.RequiresRoles;
import org.springframework.stereotype.Service;

/**
 * Created by Lenovo on 2017/8/1.
 */
@Service
public class MyService {
    @RequiresRoles({"admin"})
    public void test(){
        System.out.println("hahhhahahahah");
    }
}

第二步：在Controller里面配置

package org.peter.controller;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.peter.service.MyService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.annotation.Resource;

/**
 * Created by Lenovo on 2017/8/1.
 */
@Controller
public class HelloController {
    /*测试*/
    @Resource
    MyService myService;
    @RequestMapping("/test")
    public void test(){
        myService.test();
    }

}

第三步：在jsp的页面里添加一个超链接来测试

<%@ taglib prefix="shiro" uri="http://shiro.apache.org/tags" %>

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>欢迎页面</title>
  </head>
  <body>
  <h1>热烈欢迎</h1>
  <a href="/test">test</a>
  </body>
</html>