Shiro——认证

版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/fancheng614/article/details/81433130

所谓的Shiro认证,其实就是用户登录。控制某些页面登录可见,不登录则自动重定向到登录页面。

源码下载

一、导入项目所需要的jar

二、配置web.xml

在web.xml中需要配置spring和springmvc以及shiro。

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>shiro-2</display-name>

	<!-- 配置spring环境 -->
  <context-param>
  	<param-name>contextConfigLocation</param-name>
  	<param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <listener>
  	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  
  <!-- 配置springmvc -->
  <servlet>
  	<servlet-name>spring</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>
  </servlet>
  <servlet-mapping>
  	<servlet-name>spring</servlet-name>
  	<url-pattern>/</url-pattern>
  </servlet-mapping>
  
   <!-- Shiro Filter is defined in the spring application context: -->
 	<!-- 
 		1、配置Shiro 的 ShiroFilter
 		2、DelegatingFilterProxy 实际上是一Filter的一个代理对象,默认情况下,Spring会到IOC容器中查找
 			和filter-name 对应的filter bean,也可以通过targetBeanName的初始化参数来配置Filter Bean的Id
 		 -->

    <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>
  
</web-app>

三、配置springmvc.xml

主要配置了URL前后缀和注解扫描。

<?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-4.0.xsd
	http://www.springframework.org/schema/context 
	http://www.springframework.org/schema/context/spring-context-4.0.xsd
	http://www.springframework.org/schema/mvc 
	http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

	<context:component-scan base-package="com.mfc"></context:component-scan>
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
	
	<mvc:annotation-driven></mvc:annotation-driven>
	<mvc:default-servlet-handler/>
	
</beans>

四、配置applicationContext.xml

配置shiro,在这里直接模拟了两个用户,并没有连接数据库进行取值验证。

<?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"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
	http://www.springframework.org/schema/context 
	http://www.springframework.org/schema/context/spring-context-4.0.xsd">
   	<!-- 
   		1、配置 securityManager
   	 -->
    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <property name="cacheManager" ref="cacheManager"/>
        <property name="authenticator" ref="authenticator"></property>
    </bean>

    <!-- 
    	2、配置cacheManager
    		2.1需要加入ehcache的jar及其配置文件
     -->
    <bean id="cacheManager" class="org.apache.shiro.cache.ehcache.EhCacheManager">
        <property name="cacheManagerConfigFile" value="classpath:ehcache.xml"/> 
    </bean>
    
    <!-- 可以配置多个Realm -->
    <bean id="authenticator" class="org.apache.shiro.authc.pam.ModularRealmAuthenticator">
    	<property name="realms">
    		<list>
    			<ref bean="jdbcRealm"/>
    			<ref bean="secondRealm"/>
    		</list>
    	</property>
    	<!--
    	 修改 认证策略:多Realm时,只要有一个认证通过就认证通过,或者多个Realm全部要认证通过 
    	如果使用默认认证策略,就是只要有一个认证成功就可以了	
    	-->
    	<property name="authenticationStrategy">
    		<bean class="org.apache.shiro.authc.pam.AllSuccessfulStrategy"></bean>
    	</property>
    </bean>

    <!-- 
    	3、配置Realm
    		3.1直接配置实现了Realm接口的bean
     -->
    <bean id="jdbcRealm" class="com.mfc.realms.ShiroRealm">
    	<property name="credentialsMatcher">
    		<bean class="org.apache.shiro.authc.credential.HashedCredentialsMatcher;">
    			<property name="hashAlgorithmName" value="MD5"></property>
    			<property name="hashIterations" value="1024"></property>
    		</bean>
    	</property>
    </bean>

	<bean id="secondRealm" class="com.mfc.realms.SecondRealm">
    	<property name="credentialsMatcher">
    		<bean class="org.apache.shiro.authc.credential.HashedCredentialsMatcher;">
    			<property name="hashAlgorithmName" value="SHA1"></property>
    			<property name="hashIterations" value="1024"></property>
    		</bean>
    	</property>
    </bean>
    <!-- 
    	4、配置lifecycleBeanPostProcessor  可以自动的来调用配置在spring IOC容器中shiro bean的周期方法
     -->
    <bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/>

    <!-- 
    	5、启用IOC容器中使用shiro的注解,但必须在配置了lifecycleBeanPostProcessor之后才可以使用
     -->
    <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>

	<!-- 
		6、配置ShiroFilter
			6.1 ID必须和web.xml文件中的配置的DelegatingFilterProxy的filter-name一致
				若不一致,就会抛出NoSuchBeanDefinitionException,因为Shiro会来IOC容器中查找和filter-name名字对应的filter bean
	 -->    
    <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
        <property name="securityManager" ref="securityManager"/>
        <property name="loginUrl" value="/login.jsp"/>
        <property name="successUrl" value="/list.jsp"/>
        <property name="unauthorizedUrl" value="/unauthorized.jsp"/>
        <!-- 
        	配置哪些压面需要受保护,
        	以及访问这些页面需要的权限
        	1、anon 可以被匿名访问
        	2、authc 必须认证(即登录)后才可以访问的页面
        	3、logout 注销
         -->
        <property name="filterChainDefinitions">
            <value>
                /login.jsp = anon
                /shiro/login = anon
                /shiro/logout = logout
                # everything else requires authentication:
                /** = authc
            </value>
        </property>
    </bean>
</beans>

五、Realm:

Realm:域,Shiro 从从Realm获取安全数据(如用户、角色、权限),就是说SecurityManager要验证用户身份,那么它需要从Realm获取相应的用户进行比较以确定用户身份是否合法;
也需要从Realm得到用户相应的角色/权限进行验证用户是否能进行操作;可以把Realm看成DataSource , 即安全数据源。

ShiroRealm.java:

package com.mfc.realms;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.LockedAccountException;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.crypto.hash.SimpleHash;
import org.apache.shiro.realm.AuthenticatingRealm;
import org.apache.shiro.util.ByteSource;

public class ShiroRealm extends AuthenticatingRealm {

	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(
			AuthenticationToken token) throws AuthenticationException {
		System.out.println("[FirstRealm] doGetAuthenticationInfo");
			
		//1、把AuthenticationToken 转换为UsernamePasswordToken
		UsernamePasswordToken upToken = (UsernamePasswordToken) token;
		
		//2、从UsernamePasswordToken 中获取username
		String username = upToken.getUsername();
		
		//3、调用数据库方法,从数据库中查询username 对应的用户记录
		System.out.println("从数据库中获取username:" + username + " 所对应的用户信息");
		
		//4、若用户不存在,则可以抛出UnknowAccountException异常
		if("unknow".equals(username)){
			throw new UnknownAccountException("影虎不存在");
		}
		
		//5、根据用户的信息情况,决定是否需要抛出其他的AuthenticationException异常
		if("monster".equals(username)){
			throw new LockedAccountException("用户被锁定");
		}
		
		//6、根据用户的情况,来构建AuthenticationInfo对象并返回,通常使用实现类是SimpleAuthenticationInfo
		//以下信息是从数据库中获取的
		//1、principal:认证的实体信息,可以使username,也可以是数据表对应的用户的实体类对象
		Object principal = username;
		//2、credentials:密码
		Object credentials = null; //fc1709d0a95a6be30bc5926fdb7f22f4
		if("admin".equals(username)){
			credentials = "038bdaf98f2037b31f1e75b5b4c9b26e";
		}else if("user".equals(username)){
			credentials = "098d2c478e9c11555ce2823231e02ec1";
		}
		
		//3、realmName:当前realm对象的name,调用父类的getName()即可
		String realmName = getName();
		//4、盐值
		ByteSource credentialsSalt = ByteSource.Util.bytes(username);
		
    	SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(principal, credentials, credentialsSalt, realmName);
		return info;
	}

	public static void main(String[] args) {
		
		String algorithmName = "MD5";
		Object source = "123456";
		Object salt = ByteSource.Util.bytes("user");
		int hashIterations = 1024;
		
		Object result = new SimpleHash(algorithmName, source, salt, hashIterations);
		System.out.println(result);
	}

}

SecondRealm.java:

package com.mfc.realms;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.LockedAccountException;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.crypto.hash.SimpleHash;
import org.apache.shiro.realm.AuthenticatingRealm;
import org.apache.shiro.util.ByteSource;

public class SecondRealm extends AuthenticatingRealm {

	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(
			AuthenticationToken token) throws AuthenticationException {
		System.out.println("[SecondReaml] doGetAuthenticationInfo");
		
		//1、把AuthenticationToken 转换为UsernamePasswordToken
		UsernamePasswordToken upToken = (UsernamePasswordToken) token;
		
		//2、从UsernamePasswordToken 中获取username
		String username = upToken.getUsername();
		
		//3、调用数据库方法,从数据库中查询username 对应的用户记录
		System.out.println("从数据库中获取username:" + username + " 所对应的用户信息");
		
		//4、若用户不存在,则可以抛出UnknowAccountException异常
		if("unknow".equals(username)){
			throw new UnknownAccountException("影虎不存在");
		}
		
		//5、根据用户的信息情况,决定是否需要抛出其他的AuthenticationException异常
		if("monster".equals(username)){
			throw new LockedAccountException("用户被锁定");
		}
		
		//6、根据用户的情况,来构建AuthenticationInfo对象并返回,通常使用实现类是SimpleAuthenticationInfo
		//以下信息是从数据库中获取的
		//1、principal:认证的实体信息,可以使username,也可以是数据表对应的用户的实体类对象
		Object principal = username;
		//2、credentials:密码
		Object credentials = null; //fc1709d0a95a6be30bc5926fdb7f22f4
		if("admin".equals(username)){
			credentials = "ce2f6417c7e1d32c1d81a797ee0b499f87c5de06";
		}else if("user".equals(username)){
			credentials = "073d4c3ae812935f23cb3f2a71943f49e082a718";
		}
		
		//3、realmName:当前realm对象的name,调用父类的getName()即可
		String realmName = getName();
		//4、盐值
		ByteSource credentialsSalt = ByteSource.Util.bytes(username);
		
    	SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(principal, credentials, credentialsSalt, realmName);
		return info;
	}

	public static void main(String[] args) {
		
		String algorithmName = "SHA1";
		Object source = "123456";
		Object salt = ByteSource.Util.bytes("admin");
		int hashIterations = 1024;
		
		Object result = new SimpleHash(algorithmName, source, salt, hashIterations);
		System.out.println(result);
	}

}

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转载自blog.csdn.net/fancheng614/article/details/81433130