shiro_02_身份认证加密

一、盐加密

1.明文密码

2.md5加密

3.md5加盐加密

4.md5加盐加密加次数 1024

5.演示代码

二、shiro的认证

1.完成登录的方法 Mapper层的编写和biz层

2.自定义realm（重点）

3.Spring与shiro的整合（注意）

4.测试

一、盐加密

数据库密码的发展史
第一个阶段：明文密码 123456
第二个阶段：md5加密 e10adc3949ba59abbe56e057f20f883e
第三个阶段：md5加盐加密
第四个阶段：md5加盐加密加次数 1024

1.明文密码

也就是说在数据库里密码是可以看到的

2.md5加密

数据库里的密码已经加密了

也就相当于密码是 e10adc3949ba59abbe56e057f20f883e=123456

还可以看下面这张图也就是说这个加密还不够完全，它可以解出来，而且这个加密的密还是同一个，它始终不会变的e10adc3949ba59abbe56e057f20f883e

3.md5加盐加密

123456：原始密码
盐：1
e10adc3949ba59abbe56e057f20f883f
盐：2
e10adc3949ba59abbe56e057f20f883g

就是看你的盐加了多少然后就在继续加密

4.md5加盐加密加次数 1024

你要知道加了多少盐，还要知道多少次，也就是说别人加密多少次，你就要解密多少次

5.演示代码

1.导入pom依赖


<!--    shiro相关依赖-->
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-core</artifactId>
    <version>1.3.2</version>
</dependency>
 
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-web</artifactId>
    <version>1.3.2</version>
</dependency>
 
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-spring</artifactId>
    <version>1.3.2</version>
</dependency>

所有的pom.xml


"1.0" encoding="UTF-8"?>
 
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0modelVersion>
 
  <groupId>org.examplegroupId>
  <artifactId>ssmartifactId>
  <version>1.0-SNAPSHOTversion>
  <packaging>warpackaging>
 
  <name>ssm Maven Webappname>
  
  <url>http://www.example.comurl>
 
  <properties>
    <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
    <maven.compiler.source>1.8maven.compiler.source>
    <maven.compiler.target>1.8maven.compiler.target>
    <maven.compiler.plugin.version>3.7.0maven.compiler.plugin.version>
 
    
    
    <spring.version>5.0.2.RELEASEspring.version>
    
    <mybatis.version>3.4.5mybatis.version>
    
    <mysql.version>5.1.44mysql.version>
    
    <pagehelper.version>5.1.2pagehelper.version>
    
    <mybatis.spring.version>1.3.1mybatis.spring.version>
    
    <commons.dbcp2.version>2.1.1commons.dbcp2.version>
    <commons.pool2.version>2.4.3commons.pool2.version>
    
    <log4j2.version>2.9.1log4j2.version>
    
    <junit.version>4.12junit.version>
    <servlet.version>4.0.0servlet.version>
    <lombok.version>1.18.2lombok.version>
  properties>
 
  <dependencies>
    
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-contextartifactId>
      <version>${spring.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-ormartifactId>
      <version>${spring.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-txartifactId>
      <version>${spring.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-aspectsartifactId>
      <version>${spring.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webartifactId>
      <version>${spring.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-testartifactId>
      <version>${spring.version}version>
    dependency>
 
    
    <dependency>
      <groupId>org.mybatisgroupId>
      <artifactId>mybatisartifactId>
      <version>${mybatis.version}version>
    dependency>
    
    <dependency>
      <groupId>mysqlgroupId>
      <artifactId>mysql-connector-javaartifactId>
      <version>${mysql.version}version>
    dependency>
    
    <dependency>
      <groupId>com.github.pagehelpergroupId>
      <artifactId>pagehelperartifactId>
      <version>${pagehelper.version}version>
    dependency>
    
    <dependency>
      <groupId>org.mybatisgroupId>
      <artifactId>mybatis-springartifactId>
      <version>${mybatis.spring.version}version>
    dependency>
 
    
    <dependency>
      <groupId>org.apache.commonsgroupId>
      <artifactId>commons-dbcp2artifactId>
      <version>${commons.dbcp2.version}version>
    dependency>
    <dependency>
      <groupId>org.apache.commonsgroupId>
      <artifactId>commons-pool2artifactId>
      <version>${commons.pool2.version}version>
    dependency>
 
    
    
    <dependency>
      <groupId>org.apache.logging.log4jgroupId>
      <artifactId>log4j-coreartifactId>
      <version>${log4j2.version}version>
    dependency>
    <dependency>
      <groupId>org.apache.logging.log4jgroupId>
      <artifactId>log4j-apiartifactId>
      <version>${log4j2.version}version>
    dependency>
    
    <dependency>
      <groupId>org.apache.logging.log4jgroupId>
      <artifactId>log4j-webartifactId>
      <version>${log4j2.version}version>
    dependency>
 
    
    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>${junit.version}version>
      <scope>testscope>
    dependency>
    <dependency>
      <groupId>javax.servletgroupId>
      <artifactId>javax.servlet-apiartifactId>
      <version>${servlet.version}version>
      <scope>providedscope>
    dependency>
    <dependency>
      <groupId>org.projectlombokgroupId>
      <artifactId>lombokartifactId>
      <version>${lombok.version}version>
      <scope>providedscope>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webmvcartifactId>
      <version>${spring.version}version>
    dependency>
    
    <dependency>
      <groupId>javax.servlet.jspgroupId>
      <artifactId>javax.servlet.jsp-apiartifactId>
      <version>2.3.3version>
    dependency>
    <dependency>
      <groupId>jstlgroupId>
      <artifactId>jstlartifactId>
      <version>1.2version>
    dependency>
    <dependency>
      <groupId>taglibsgroupId>
      <artifactId>standardartifactId>
      <version>1.1.2version>
    dependency>
 
    <dependency>
      <groupId>commons-fileuploadgroupId>
      <artifactId>commons-fileuploadartifactId>
      <version>1.3.3version>
    dependency>
 
    
    <dependency>
      <groupId>org.hibernategroupId>
      <artifactId>hibernate-validatorartifactId>
      <version>6.0.7.Finalversion>
    dependency>
 
    
    <dependency>
      <groupId>com.fasterxml.jackson.coregroupId>
      <artifactId>jackson-databindartifactId>
      <version>2.9.3version>
    dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.coregroupId>
      <artifactId>jackson-coreartifactId>
      <version>2.9.3version>
    dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.coregroupId>
      <artifactId>jackson-annotationsartifactId>
      <version>2.9.3version>
    dependency>
 
    <dependency>
      <groupId>org.apache.shirogroupId>
      <artifactId>shiro-coreartifactId>
      <version>1.3.2version>
    dependency>
 
    <dependency>
      <groupId>org.apache.shirogroupId>
      <artifactId>shiro-webartifactId>
      <version>1.3.2version>
    dependency>
 
    <dependency>
      <groupId>org.apache.shirogroupId>
      <artifactId>shiro-springartifactId>
      <version>1.3.2version>
    dependency>
  dependencies>
 
  <build>
    <finalName>ssmfinalName>
    <resources>
      
      <resource>
        <directory>src/main/javadirectory>
        <includes>
          <include>**/*.xmlinclude>
        includes>
      resource>
      
      <resource>
        <directory>src/main/resourcesdirectory>
        <includes>
          <include>jdbc.propertiesinclude>
          <include>*.xmlinclude>
        includes>
      resource>
    resources>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.maven.pluginsgroupId>
          <artifactId>maven-compiler-pluginartifactId>
          <version>${maven.compiler.plugin.version}version>
          <configuration>
            <source>${maven.compiler.source}source>
            <target>${maven.compiler.target}target>
            <encoding>${project.build.sourceEncoding}encoding>
          configuration>
        plugin>
        <plugin>
          <groupId>org.mybatis.generatorgroupId>
          <artifactId>mybatis-generator-maven-pluginartifactId>
          <version>1.3.2version>
          <dependencies>
            
            <dependency>
              <groupId>mysqlgroupId>
              <artifactId>mysql-connector-javaartifactId>
              <version>${mysql.version}version>
            dependency>
          dependencies>
          <configuration>
            <overwrite>trueoverwrite>
          configuration>
        plugin>
        <plugin>
          <artifactId>maven-clean-pluginartifactId>
          <version>3.1.0version>
        plugin>
        
        <plugin>
          <artifactId>maven-resources-pluginartifactId>
          <version>3.0.2version>
        plugin>
        <plugin>
          <artifactId>maven-compiler-pluginartifactId>
          <version>3.8.0version>
        plugin>
        <plugin>
          <artifactId>maven-surefire-pluginartifactId>
          <version>2.22.1version>
        plugin>
        <plugin>
          <artifactId>maven-war-pluginartifactId>
          <version>3.2.2version>
        plugin>
        <plugin>
          <artifactId>maven-install-pluginartifactId>
          <version>2.5.2version>
        plugin>
        <plugin>
          <artifactId>maven-deploy-pluginartifactId>
          <version>2.8.2version>
        plugin>
      plugins>
    pluginManagement>
  build>
project>

2.配置 web.xml 交给spring进行管理


<!-- shiro过滤器定义 -->
<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>

所有web.xml


<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
  <display-name>Archetype Created Web Application</display-name>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <!-- 读取Spring上下文的监听器 -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
 
  <!-- Spring MVC servlet -->
  <servlet>
    <servlet-name>SpringMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--此参数可以不配置，默认值为：/WEB-INF/springmvc-servlet.xml-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/springmvc-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    <!--web.xml 3.0的新特性，是否支持异步-->
    <async-supported>true</async-supported>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
 
  <!-- 中文乱码处理 -->
  <filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <!--web.xml 3.0的新特性，是否支持异步-->
    <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>
 
  <!-- shiro过滤器定义 -->
  <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>
 
</web-app>

4.在这里新建一个包，里面放PasswordHelper.java


package com.jwj.shiro;
 
 
import org.apache.shiro.crypto.RandomNumberGenerator;
import org.apache.shiro.crypto.SecureRandomNumberGenerator;
import org.apache.shiro.crypto.hash.SimpleHash;
 
/**
 * 用于shiro权限认证的密码工具类
 */
public class PasswordHelper {
 
    /**
     * 随机数生成器
     * 生成的盐
     */
    private static RandomNumberGenerator randomNumberGenerator = new SecureRandomNumberGenerator();
 
    /**
     * 指定hash算法为MD5
     * 采用什么加密方式
     */
    private static final String hashAlgorithmName = "md5";
 
    /**
     * 指定散列次数为1024次，即加密1024次
     * 加密1024次，解密也是1024次
     */
    private static final int hashIterations = 1024;
 
    /**
     * true指定Hash散列值使用Hex加密存. false表明hash散列值用用Base64-encoded存储
     * 你是不是base64位的进行存储
     */
    private static final boolean storedCredentialsHexEncoded = true;
 
    /**
     * 获得加密用的盐
     * 随机生成的盐
     * @return
     */
    public static String createSalt() {
        return randomNumberGenerator.nextBytes().toHex();
    }
 
    /**
     * 获得加密后的凭证
     *  生成一个秘密
     * @param credentials 凭证(即密码)
     * @param salt        盐
     * @return
     * 原始密码 + 盐  =  加密后的  返回值String就是加密后的
     */
    public static String createCredentials(String credentials, String salt) {
        SimpleHash simpleHash = new SimpleHash(hashAlgorithmName, credentials,
                salt, hashIterations);
        return storedCredentialsHexEncoded ? simpleHash.toHex() : simpleHash.toBase64();
    }
 
 
    /**
     * 进行密码验证
     * 校验我的密码
     *
     * @param credentials        未加密的密码
     * @param salt               盐
     * @param encryptCredentials 加密后的密码
     * @return
     *
     */
    public static boolean checkCredentials(String credentials, String salt, String encryptCredentials) {
        return encryptCredentials.equals(createCredentials(credentials, salt));
    }
 
    public static void main(String[] args) {
        //盐   生成随机的盐
        String salt = createSalt();
        System.out.println(salt);
//        拿到盐生成的长度
        System.out.println(salt.length());
        //凭证+盐加密后得到的密码
        String credentials = createCredentials("123456", salt);
        System.out.println(credentials);
//        加密后的长度
        System.out.println(credentials.length());
//        拿到加密后的密码和原始化的密码如果为true，就代码加密成功了
        boolean b = checkCredentials("123456", salt, credentials);
        System.out.println(b);
    }
}

运行一下如图所示：

123456 原始密码
76925b1ed64ebf33185454c9da646394 盐
32
fc3a986b62b7c6710e9ee7cf26b5d917 加密后
32
true

拿到原始密码和盐以及加密后的密码做对比如果为true说明加密成功

我们在运行一次看看这两者之间是不是一样的如图所示：

可以看到明显的不一样了，盐不一样了也就会导致加密后的也不一样了

如果说你有一万数据被泄露了，它要解密这些东西，它首先要拿到加密的次数（1024），要解密也的逐条进解密，因为我们每个加的盐都是不一样的。

我们怎么拿到数据库里的数据

我们查询的SQL语句也不一样了

之前的SQL语句查询

select * from t_oa_user where username='zs' and password=123456

现在的SQL语句查询

select * from t_oa_user where username='zs'

假设：用户名：zhangsan 密码：zhangsan

传递到后台就能接收到这两个变量

1.生成随机的盐

2.利用 zhangsan 原始密码 + 生成的盐 = 得到加密后的密码

3. 在执行 insert 语句

二、shiro的认证

1.完成登录的方法 Mapper层的编写，接着就是biz层

2.完成自定义realm（重点）

3.Spring与shiro的整合（注意）

4.测试

1.完成登录的方法 Mapper层的编写和biz层

通过逆向工程将五张表生成对应的model、Mapper

generatorConfig.xml 主要生成好了之后记得要把它切换掉为其他的


"1.0" encoding="UTF-8" ?>
generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
       "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd" >
<generatorConfiguration>
<properties resource="jdbc.properties"/>
 
<classPathEntry location="F:\\Courseware\\SoftwareInstallPath\\maven\\apache-maven-3.5.0-bin\\apache-maven-3.5.0-bin\\mvn_repository\\mysql\\mysql-connector-java\\5.1.44\\mysql-connector-java-5.1.44.jar"/>
 
<context id="infoGuardian">
    
    <commentGenerator>
        <property name="suppressAllComments" value="true"/>
        <property name="suppressDate" value="true"/> 
    commentGenerator>
 
    
    <jdbcConnection driverClass="${jdbc.driver}"
                    connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/>
 
    
    <javaTypeResolver>
        
        <property name="forceBigDecimals" value="false"/>
    javaTypeResolver>
 
    
    
    
    <javaModelGenerator targetPackage="com.jwj.ssm.model"
                        targetProject="src/main/java">
        
        <property name="enableSubPackages" value="false"/>
        
        <property name="constructorBased" value="true"/>
        
        <property name="trimStrings" value="false"/>
        
        <property name="immutable" value="false"/>
    javaModelGenerator>
 
    
    <sqlMapGenerator targetPackage="com.jwj.ssm.mapper"
                     targetProject="src/main/java">
        
        <property name="enableSubPackages" value="false"/>
    sqlMapGenerator>
 
    
    
    
    
    <javaClientGenerator targetPackage="com.jwj.ssm.mapper"
                         targetProject="src/main/java" type="XMLMAPPER">
        
        <property name="enableSubPackages" value="false"/>
    javaClientGenerator>
 
    
    
    
    
    
    
    
    
    
    
    
    
    
 
    <table schema="" tableName="t_shiro_user" domainObjectName="User"
           enableCountByExample="false" enableDeleteByExample="false"
           enableSelectByExample="false" enableUpdateByExample="false">
    table>
 
    <table schema="" tableName="t_shiro_role" domainObjectName="Role"
           enableCountByExample="false" enableDeleteByExample="false"
           enableSelectByExample="false" enableUpdateByExample="false">
    table>
 
    <table schema="" tableName="t_shiro_permission" domainObjectName="Permission"
           enableCountByExample="false" enableDeleteByExample="false"
           enableSelectByExample="false" enableUpdateByExample="false">
    table>
 
    <table schema="" tableName="t_shiro_user_role" domainObjectName="UserRole"
           enableCountByExample="false" enableDeleteByExample="false"
           enableSelectByExample="false" enableUpdateByExample="false">
    table>
 
    <table schema="" tableName="t_shiro_role_permission" domainObjectName="RolePermission"
           enableCountByExample="false" enableDeleteByExample="false"
           enableSelectByExample="false" enableUpdateByExample="false">
    table>
 
context>
generatorConfiguration>

我们这就生成好了如图所示：

在我们的UserMapper.xml中新增方法


<!--  通过用户名进行查询-->
  <select id="queryUserByUserName" resultType="com.jwj.ssm.model.User" parameterType="java.lang.String" >
    select
    <include refid="Base_Column_List" />
    from t_shiro_user
    where userName = #{userName}
  </select>

UserMapper.java 也加上我们刚刚写的方法


package com.jwj.ssm.mapper;
 
import com.jwj.ssm.model.User;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;
 
//这个加也可以不加也可以，不加那边的实现方法就会报红，会感觉不舒服，加了就不会报红
@Repository
public interface UserMapper {
    int deleteByPrimaryKey(Integer userid);
 
    int insert(User record);
 
    int insertSelective(User record);
 
    User selectByPrimaryKey(Integer userid);
 
    int updateByPrimaryKeySelective(User record);
 
    int updateByPrimaryKey(User record);
 
    User queryUserByUserName(@Param("userName") String userName);
}

UserBiz.java


package com.jwj.ssm.biz;
 
import com.jwj.ssm.model.User;
import org.apache.ibatis.annotations.Param;
 
/**
 * @author 敢敢
 * @site www.javajwj.com
 * @company xxx公司
 * @create  2022-08-25 19:10
 */
public interface UserBiz {
    int deleteByPrimaryKey(Integer userid);
 
    int insert(User record);
 
    int insertSelective(User record);
 
    User selectByPrimaryKey(Integer userid);
 
    int updateByPrimaryKeySelective(User record);
 
    int updateByPrimaryKey(User record);
 
    User queryUserByUserName(String userName);
}

实现类 UserBizImp.java


package com.jwj.ssm.biz.impl;
 
import com.jwj.ssm.biz.UserBiz;
import com.jwj.ssm.mapper.UserMapper;
import com.jwj.ssm.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
/**
 * @author 敢敢
 * @site www.javajwj.com
 * @company xxx公司
 * @create  2022-08-25 19:11
 */
@Service("userBiz")
public class UserBizImpl implements UserBiz {
    @Autowired
    private UserMapper userMapper;
 
    @Override
    public int deleteByPrimaryKey(Integer userid) {
        return userMapper.deleteByPrimaryKey(userid);
    }
 
    @Override
    public int insert(User record) {
        return userMapper.insert(record);
    }
 
    @Override
    public int insertSelective(User record) {
        return userMapper.insertSelective(record);
    }
 
    @Override
    public User selectByPrimaryKey(Integer userid) {
        return userMapper.selectByPrimaryKey(userid);
    }
 
    @Override
    public int updateByPrimaryKeySelective(User record) {
        return userMapper.updateByPrimaryKeySelective(record);
    }
 
    @Override
    public int updateByPrimaryKey(User record) {
        return userMapper.updateByPrimaryKey(record);
    }
 
    @Override
    public User queryUserByUserName(String userName) {
        return userMapper.queryUserByUserName(userName);
    }
}

2.自定义realm（重点）

MyRealm.java


package com.jwj.ssm.shiro;
 
import com.jwj.ssm.biz.UserBiz;
import com.jwj.ssm.model.User;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.beans.factory.annotation.Autowired;
 
/**
 * @author 敢敢
 * @site www.javajwj.com
 * @company xxx公司
 * @create  2022-08-25 19:19
 */
public class MyRealm extends AuthorizingRealm {
    public UserBiz userBiz;
 
    public UserBiz getUserBiz() {
        return userBiz;
    }
 
    public void setUserBiz(UserBiz userBiz) {
        this.userBiz = userBiz;
    }
 
    /**
     * 授权
     * @param principalCollection
     * @return
     *  shiro-web.ini
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        return null;
    }
 
    /**
     * 认证
     * @param authenticationToken
     * @return
     * @throws AuthenticationException
     *  shiro.ini
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
//        拿到我们的用户名
        String userName = authenticationToken.getPrincipal().toString();
        User user = userBiz.queryUserByUserName(userName);
//       拿到数据库中的用户信息，放入token凭证中，用于controler进行对比
        AuthenticationInfo info = new SimpleAuthenticationInfo(
                user.getUsername(),
                user.getPassword(),
                ByteSource.Util.bytes(user.getSalt()),
                this.getName() //realm的名字
        );
        return info;
    }
}

交给我们的spring进行管理

applicationContext.xml


<?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" 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/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<!--随着后续，框架会越学越多，不能讲所有的框架配置，放到同一个配置文件，否则不便于管理-->
    <import resource="applicationContext-mybatis.xml"></import>
    <import resource="applicationContext-shiro.xml"></import>
 
</beans>

3.Spring与shiro的整合（注意）

①shiro 在加载的时候，Spring上下文还没有加载完毕，所以@component与@autowised是不能使用的

② spring-shiro.xml 文件中，Myream需要依赖的业务类，由于没有被Spring配置，所以需要指定bean的id 通过@Service（"具体的名字"）

applicationContext-shiro.xml


"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">
 
    
    <bean id="shiroRealm" class="com.jwj.ssm.shiro.MyRealm">
        <property name="userBiz" ref="userBiz" />
        
        
        
        
        <property name="credentialsMatcher">
            <bean id="credentialsMatcher" class="org.apache.shiro.authc.credential.HashedCredentialsMatcher">
                
                <property name="hashAlgorithmName" value="md5"/>
                
                <property name="hashIterations" value="1024"/>
                
                <property name="storedCredentialsHexEncoded" value="true"/>
            bean>
        property>
    bean>
 
    
    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <property name="realm" ref="shiroRealm" />
    bean>
 
    
    <bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
        
        <property name="securityManager" ref="securityManager" />
        
        <property name="loginUrl" value="/login"/>
        
        
        
        <property name="unauthorizedUrl" value="/unauthorized.jsp"/>
        
        <property name="filterChainDefinitions">
            <value>
                
                
                
                
                /user/login=anon
                /user/updatePwd.jsp=authc
                /admin/*.jsp=roles[admin]
                /user/teacher.jsp=perms["user:update"]
                
            value>
        property>
    bean>
 
    
    <bean id="lifecycleBeanPostProcessor" class="org.apache.shiro.spring.LifecycleBeanPostProcessor"/>
beans>

LoginController.java


package com.jwj.ssm.controller;
 
import org.apache.shiro.SecurityUtils;
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 javax.servlet.http.HttpServletRequest;
 
/**
 * @author 敢敢
 * @site www.javajwj.com
 * @company xxx公司
 * @create  2022-08-20 12:12
 */
@Controller
public class LoginController {
 
//    @RequestMapping("/login")
//    public String login(HttpServletRequest request){
        登录成功一般需要 保存 用户信息
//        String uname = request.getParameter("uname");
//        if("zhangsan".equals(uname)){
//            request.getSession().setAttribute("uname",uname);
//        }
//        return "index";
//    }
//
//    @RequestMapping("/logout")
//    public String logout(HttpServletRequest request){
        做销毁
//        request.getSession().invalidate();
//        return "index";
//    }
 
 
    @RequestMapping("/login")
    public String login(HttpServletRequest request){
        try {
            String username = request.getParameter("username");
            String password = request.getParameter("password");
//          生成令牌
            UsernamePasswordToken token = new UsernamePasswordToken(username,password);
//            生成主体
            Subject subject = SecurityUtils.getSubject();
//            拿到令牌进行登录
            subject.login(token);
            return "main";
        }catch (Exception e){
            request.setAttribute("message","账户密码错误...");
            return "login";
        }
    }
 
    @RequestMapping("/logout")
    public String logout(HttpServletRequest request){
        Subject subject = SecurityUtils.getSubject();
        subject.logout();
        return "login";
    }
}

4.测试

把这个复制到我们的webapp下面

运行结果它也就那到了我们的用户名和盐以及加密如图所示：

最终运行结果如图所示：

‘

结论：doGetAuthenticationInfo认证方法是web层执行subject.login 方法触发的。

三、总结

1.盐加密

1.明文密码

2.md5 加密密文密码

3.md5 加盐加密一个明文对应多个密文

4.md5 加盐加密加次数

2.shiro 的认证

1.Mapper层 —— 通过账户名获取用户信息

2.将用户信息给MyRealm 认证方法，认证的过程交给安全管理器

3.MyRealm的配置，配置spring-shiro.xml 文件中

① shiro接管MyRealm的时候，还没有被Spring所接管导致@component与@autowised用不了

② 采用配置的形式配置UserBiz，需要给@service指定bean的名称

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原文地址：https://blog.csdn.net/weixin_67465673/article/details/126529972