Shiro 实战教程（下）

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注：该shiro教程来源于B站上的一个教程，由于源码是付费的，我就不分享了，下篇讲解springboot搭配shiro进行使用。

我的个人博客：

天涯志

我的公众号：菜鸟小谢

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6.整合SpringBoot项目实战

6.0 整合思路

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6.1 创建springboot项目

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6.2 引入shiro依赖

<dependency>
  <groupId>org.apache.shiro</groupId>
  <artifactId>shiro-spring-boot-starter</artifactId>
  <version>1.5.3</version>
</dependency>

6.3 配置shiro环境

0.创建配置类

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1.配置shiroFilterFactoryBean
@Bean
public ShiroFilterFactoryBean getShiroFilterFactoryBean(SecurityManager securityManager){
  //创建shiro的filter
  ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
  //注入安全管理器
  shiroFilterFactoryBean.setSecurityManager(securityManager);
 	
  return shiroFilterFactoryBean;
}
2.配置WebSecurityManager
@Bean
public DefaultWebSecurityManager getSecurityManager(Realm realm){
  DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();
  defaultWebSecurityManager.setRealm(realm);
  return defaultWebSecurityManager;
}
3.创建自定义realm

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public class CustomerRealm extends AuthorizingRealm {
    //处理授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        return null;
    }
		//处理认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws 
      																																		AuthenticationException {
        return null;
    }
}
4.配置自定义realm
//创建自定义realm
@Bean
public Realm getRealm(){
  return new CustomerRealm();
}
5.编写控制器跳转至index.html
@Controller
public class IndexController {
    @RequestMapping("index")
    public String index(){
        System.out.println("跳转至主页");
        return "index";
    }
}

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6.启动springboot应用访问index

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注意:

  • 默认在配置好shiro环境后默认环境中没有对项目中任何资源进行权限控制,所有现在项目中所有资源都可以通过路径访问

  • 7.加入权限控制

  • 修改ShiroFilterFactoryBean配置

    //注入安全管理器
shiroFilterFactoryBean.setSecurityManager(securityManager);
Map<String,String> map =  new LinkedHashMap<>();
map.put("/**","authc");
//配置认证和授权规则
shiroFilterFactoryBean.setFilterChainDefinitionMap(map);

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8.重启项目访问查看

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6.4 常见过滤器

  • 注意: shiro提供和多个默认的过滤器，我们可以用这些过滤器来配置控制指定url的权限：
配置缩写 对应的过滤器 功能
anon AnonymousFilter 指定url可以匿名访问
authc FormAuthenticationFilter 指定url需要form表单登录，默认会从请求中获取username、password,rememberMe等参数并尝试登录，如果登录不了就会跳转到loginUrl配置的路径。我们也可以用这个过滤器做默认的登录逻辑，但是一般都是我们自己在控制器写登录逻辑的，自己写的话出错返回的信息都可以定制嘛。
authcBasic BasicHttpAuthenticationFilter 指定url需要basic登录
logout LogoutFilter 登出过滤器，配置指定url就可以实现退出功能，非常方便
noSessionCreation NoSessionCreationFilter 禁止创建会话
perms PermissionsAuthorizationFilter 需要指定权限才能访问
port PortFilter 需要指定端口才能访问
rest HttpMethodPermissionFilter 将http请求方法转化成相应的动词来构造一个权限字符串，这个感觉意义不大，有兴趣自己看源码的注释
roles RolesAuthorizationFilter 需要指定角色才能访问
ssl SslFilter 需要https请求才能访问
user UserFilter 需要已登录或“记住我”的用户才能访问

6.5 认证实现

1. 在login.jsp中开发认证界面

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<form action="${pageContext.request.contextPath}/user/login" method="post">
  用户名:<input type="text" name="username" > <br/>
  密码  : <input type="text" name="password"> <br>
  <input type="submit" value="登录">
</form>
2. 开发controller
@Controller
@RequestMapping("user")
public class UserController {
  /**
    * 用来处理身份认证
    * @param username
    * @param password
    * @return
    */
  @RequestMapping("login")
  public String login(String username,String password){
    //获取主体对象
    Subject subject = SecurityUtils.getSubject();
    try {
      subject.login(new UsernamePasswordToken(username,password));
      return  "redirect:/index.jsp";
    } catch (UnknownAccountException e) {
      e.printStackTrace();
      System.out.println("用户名错误!");
    }catch (IncorrectCredentialsException e){
      e.printStackTrace();
      System.out.println("密码错误!");
    }
    return "redirect:/login.jsp";
  }
}
  • 在认证过程中使用subject.login进行认证
3.开发realm中返回静态数据(未连接数据库)
@Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("==========================");
        String principal = (String) token.getPrincipal();
        if("xiaochen".equals(principal)){
            return new SimpleAuthenticationInfo(principal,"123",this.getName());
        }
        return null;
    }
}
4.启动项目以realm中定义静态数据进行认证

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  • 认证功能没有md5和随机盐的认证就实现啦

6.6 退出认证

1.开发页面退出连接
2.开发controller
@Controller
@RequestMapping("user")
public class UserController {
  /**
    * 退出登录
    *
    */
  @RequestMapping("logout")
  public String logout(){
    Subject subject = SecurityUtils.getSubject();
    subject.logout();//退出用户
    return "redirect:/login.jsp";
  }
}
3.修改退出连接访问退出路径

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4.退出之后访问受限资源立即返回认证界面

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6.7 MD5、Salt的认证实现

1.开发数据库注册

0.开发注册界面
<h1>用户注册</h1>
<form action="${pageContext.request.contextPath}/user/register" method="post">
  用户名:<input type="text" name="username" > <br/>
  密码  : <input type="text" name="password"> <br>
  <input type="submit" value="立即注册">
</form>
1.创建数据表结构
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for t_user
-- ----------------------------
DROP TABLE IF EXISTS `t_user`;
CREATE TABLE `t_user` (
  `id` int(6) NOT NULL AUTO_INCREMENT,
  `username` varchar(40) DEFAULT NULL,
  `password` varchar(40) DEFAULT NULL,
  `salt` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

SET FOREIGN_KEY_CHECKS = 1;
2.项目引入依赖
<!--mybatis相关依赖-->
<dependency>
  <groupId>org.mybatis.spring.boot</groupId>
  <artifactId>mybatis-spring-boot-starter</artifactId>
  <version>2.1.2</version>
</dependency>

<!--mysql-->
<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.38</version>
</dependency>


<!--druid-->
<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid</artifactId>
  <version>1.1.19</version>
</dependency>
3.配置application.properties配置文件
server.port=8888
server.servlet.context-path=/shiro
spring.application.name=shiro

spring.mvc.view.prefix=/
spring.mvc.view.suffix=.jsp
#新增配置
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/shiro?characterEncoding=UTF-8
spring.datasource.username=root
spring.datasource.password=root


mybatis.type-aliases-package=com.baizhi.springboot_jsp_shiro.entity
mybatis.mapper-locations=classpath:com/baizhi/mapper/*.xml
4.创建entity
@Data
@Accessors(chain = true)
@AllArgsConstructor
@NoArgsConstructor
public class User {
    private String  id;
    private String username;
    private String password;
    private String salt;
}
5.创建DAO接口
@Mapper
public interface UserDAO {
    void save(User user);
}
6.开发mapper配置文件
<insert id="save" parameterType="User" useGeneratedKeys="true" keyProperty="id">
  insert into t_user values(#{id},#{username},#{password},#{salt})
</insert>
7.开发service接口
public interface UserService {
    //注册用户方法
    void register(User user);
}
8.创建salt工具类
public class SaltUtils {
    /**
     * 生成salt的静态方法
     * @param n
     * @return
     */
    public static String getSalt(int n){
        char[] chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890!@#$%^&*()".toCharArray();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < n; i++) {
            char aChar = chars[new Random().nextInt(chars.length)];
            sb.append(aChar);
        }
        return sb.toString();
    }
}
9.开发service实现类
@Service
@Transactional
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDAO userDAO;

    @Override
    public void register(User user) {
        //处理业务调用dao
        //1.生成随机盐
        String salt = SaltUtils.getSalt(8);
        //2.将随机盐保存到数据
        user.setSalt(salt);
        //3.明文密码进行md5 + salt + hash散列
        Md5Hash md5Hash = new Md5Hash(user.getPassword(),salt,1024);
        user.setPassword(md5Hash.toHex());
        userDAO.save(user);
    }
}
10.开发Controller
@Controller
@RequestMapping("user")
public class UserController {

    @Autowired
    private UserService userService;

    /**
     * 用户注册
     */
    @RequestMapping("register")
    public String register(User user) {
        try {
            userService.register(user);
            return "redirect:/login.jsp";
        }catch (Exception e){
            e.printStackTrace();
            return "redirect:/register.jsp";
        }
    }
}
11.启动项目进行注册

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2.开发数据库认证

0.开发DAO
@Mapper
public interface UserDAO {

    void save(User user);
		//根据身份信息认证的方法
    User findByUserName(String username);
}
1.开发mapper配置文件
<select id="findByUserName" parameterType="String" resultType="User">
  select id,username,password,salt from t_user
  where username = #{username}
</select>
2.开发Service接口
public interface UserService {
    //注册用户方法
    void register(User user);
    //根据用户名查询业务的方法
    User findByUserName(String username);
}
3.开发Service实现类
@Service("userService")
@Transactional
public class UserServiceImpl implements UserService {
    @Autowired
    private UserDAO userDAO;
    @Override
    public User findByUserName(String username) {
        return userDAO.findByUserName(username);
    }
}
4.开发在工厂中获取bean对象的工具类
@Component
public class ApplicationContextUtils implements ApplicationContextAware {

    private static ApplicationContext context;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.context = applicationContext;
    }


    //根据bean名字获取工厂中指定bean 对象
    public static Object getBean(String beanName){
        return context.getBean(beanName);
    }
}
5.修改自定义realm
 @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("==========================");

        //根据身份信息
        String principal = (String) token.getPrincipal();
        //在工厂中获取service对象
        UserService userService = (UserService) ApplicationContextUtils.getBean("userService");
				//根据身份信息查询
        User user = userService.findByUserName(principal);

        if(!ObjectUtils.isEmpty(user)){
            //返回数据库信息
            return new SimpleAuthenticationInfo(user.getUsername(),user.getPassword(), 
                                               ByteSource.Util.bytes(user.getSalt()),this.getName());
        }
        return null;
    }
6.修改ShiroConfig中realm使用凭证匹配器以及hash散列
@Bean
public Realm getRealm(){
  CustomerRealm customerRealm = new CustomerRealm();
  //设置hashed凭证匹配器
  HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
  //设置md5加密
  credentialsMatcher.setHashAlgorithmName("md5");
  //设置散列次数
  credentialsMatcher.setHashIterations(1024);
  customerRealm.setCredentialsMatcher(credentialsMatcher);
  return customerRealm;
}

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6.8 授权实现

0.页面资源授权
<%@taglib prefix="shiro" uri="http://shiro.apache.org/tags" %>

<shiro:hasAnyRoles name="user,admin">
        <li><a href="">用户管理</a>
            <ul>
                <shiro:hasPermission name="user:add:*">
                <li><a href="">添加</a></li>
                </shiro:hasPermission>
                <shiro:hasPermission name="user:delete:*">
                    <li><a href="">删除</a></li>
                </shiro:hasPermission>
                <shiro:hasPermission name="user:update:*">
                    <li><a href="">修改</a></li>
                </shiro:hasPermission>
                <shiro:hasPermission name="user:find:*">
                    <li><a href="">查询</a></li>
                </shiro:hasPermission>
            </ul>
        </li>
        </shiro:hasAnyRoles>
        <shiro:hasRole name="admin">
            <li><a href="">商品管理</a></li>
            <li><a href="">订单管理</a></li>
            <li><a href="">物流管理</a></li>
        </shiro:hasRole>
1.代码方式授权
@RequestMapping("save")
public String save(){
  System.out.println("进入方法");
  //获取主体对象
  Subject subject = SecurityUtils.getSubject();
  //代码方式
  if (subject.hasRole("admin")) {
    System.out.println("保存订单!");
  }else{
    System.out.println("无权访问!");
  }
  //基于权限字符串
  //....
  return "redirect:/index.jsp";
}

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2.方法调用授权
  • @RequiresRoles 用来基于角色进行授权
  • @RequiresPermissions 用来基于权限进行授权
@RequiresRoles(value={"admin","user"})//用来判断角色  同时具有 admin user
@RequiresPermissions("user:update:01") //用来判断权限字符串
@RequestMapping("save")
public String save(){
  System.out.println("进入方法");
  return "redirect:/index.jsp";
}

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3.授权数据持久化

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SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for t_pers
-- ----------------------------
DROP TABLE IF EXISTS `t_pers`;
CREATE TABLE `t_pers` (
  `id` int(6) NOT NULL AUTO_INCREMENT,
  `name` varchar(80) DEFAULT NULL,
  `url` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Table structure for t_role
-- ----------------------------
DROP TABLE IF EXISTS `t_role`;
CREATE TABLE `t_role` (
  `id` int(6) NOT NULL AUTO_INCREMENT,
  `name` varchar(60) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Table structure for t_role_perms
-- ----------------------------
DROP TABLE IF EXISTS `t_role_perms`;
CREATE TABLE `t_role_perms` (
  `id` int(6) NOT NULL,
  `roleid` int(6) DEFAULT NULL,
  `permsid` int(6) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Table structure for t_user
-- ----------------------------
DROP TABLE IF EXISTS `t_user`;
CREATE TABLE `t_user` (
  `id` int(6) NOT NULL AUTO_INCREMENT,
  `username` varchar(40) DEFAULT NULL,
  `password` varchar(40) DEFAULT NULL,
  `salt` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Table structure for t_user_role
-- ----------------------------
DROP TABLE IF EXISTS `t_user_role`;
CREATE TABLE `t_user_role` (
  `id` int(6) NOT NULL,
  `userid` int(6) DEFAULT NULL,
  `roleid` int(6) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

SET FOREIGN_KEY_CHECKS = 1;
4.创建dao方法
 //根据用户名查询所有角色
User findRolesByUserName(String username);
//根据角色id查询权限集合
List<Perms> findPermsByRoleId(String id);
5.mapper实现
<resultMap id="userMap" type="User">
  <id column="uid" property="id"/>
  <result column="username" property="username"/>
  <!--角色信息-->
  <collection property="roles" javaType="list" ofType="Role">
    <id column="id" property="id"/>
    <result column="rname" property="name"/>
  </collection>
</resultMap>

<select id="findRolesByUserName" parameterType="String" resultMap="userMap">
  SELECT u.id uid,u.username,r.id,r.NAME rname
  FROM t_user u
  LEFT JOIN t_user_role ur
  ON u.id=ur.userid
  LEFT JOIN t_role r
  ON ur.roleid=r.id
  WHERE u.username=#{username}
</select>

<select id="findPermsByRoleId" parameterType="String" resultType="Perms">
  SELECT p.id,p.NAME,p.url,r.NAME
  FROM t_role r
  LEFT JOIN t_role_perms rp
  ON r.id=rp.roleid
  LEFT JOIN t_perms p ON rp.permsid=p.id
  WHERE r.id=#{id}
</select>
6.Service接口
//根据用户名查询所有角色
User findRolesByUserName(String username);
//根据角色id查询权限集合
List<Perms> findPermsByRoleId(String id);
7.Service实现
@Override
public List<Perms> findPermsByRoleId(String id) {
  return userDAO.findPermsByRoleId(id);
}

@Override
public User findRolesByUserName(String username) {
  return userDAO.findRolesByUserName(username);
}
8.修改自定义realm
public class CustomerRealm extends AuthorizingRealm {
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        //获取身份信息
        String primaryPrincipal = (String) principals.getPrimaryPrincipal();
        System.out.println("调用授权验证: "+primaryPrincipal);
        //根据主身份信息获取角色 和 权限信息
        UserService userService = (UserService) ApplicationContextUtils.getBean("userService");
        User user = userService.findRolesByUserName(primaryPrincipal);
        //授权角色信息
        if(!CollectionUtils.isEmpty(user.getRoles())){
            SimpleAuthorizationInfo simpleAuthorizationInfo = new SimpleAuthorizationInfo();
            user.getRoles().forEach(role->{
                simpleAuthorizationInfo.addRole(role.getName());
                //权限信息
                List<Perms> perms = userService.findPermsByRoleId(role.getId());
                if(!CollectionUtils.isEmpty(perms)){
                    perms.forEach(perm->{
                        simpleAuthorizationInfo.addStringPermission(perm.getName());
                    });
                }
            });
            return simpleAuthorizationInfo;
        }
        return null;
    }
}

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9.启动测试

6.9 使用CacheManager

1.Cache 作用

  • Cache 缓存: 计算机内存中一段数据
  • 作用: 用来减轻DB的访问压力,从而提高系统的查询效率
  • 流程:

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2.使用shiro中默认EhCache实现缓存

1.引入依赖
<!--引入shiro和ehcache-->
<dependency>
  <groupId>org.apache.shiro</groupId>
  <artifactId>shiro-ehcache</artifactId>
  <version>1.5.3</version>
</dependency>
2.开启缓存
//3.创建自定义realm
    @Bean
    public Realm getRealm(){
        CustomerRealm customerRealm = new CustomerRealm();
        //修改凭证校验匹配器
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        //设置加密算法为md5
        credentialsMatcher.setHashAlgorithmName("MD5");
        //设置散列次数
        credentialsMatcher.setHashIterations(1024);
        customerRealm.setCredentialsMatcher(credentialsMatcher);

        //开启缓存管理器
        customerRealm.setCachingEnabled(true);
        customerRealm.setAuthorizationCachingEnabled(true);
        customerRealm.setAuthorizationCachingEnabled(true);
        customerRealm.setCacheManager(new EhCacheManager());
        return customerRealm;
    }

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3.启动刷新页面进行测试
  • 注意:如果控制台没有任何sql展示说明缓存已经开启

3.shiro中使用Redis作为缓存实现

1.引入redis依赖
<!--redis整合springboot-->
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
2.配置redis连接
spring.redis.port=6379
spring.redis.host=localhost
spring.redis.database=0
3.启动redis服务
➜  bin ls
dump.rdb        redis-check-aof redis-cli       redis-server    redis.conf
redis-benchmark redis-check-rdb redis-sentinel  redis-trib.rb
➜  bin ./redis-server redis.conf

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4.开发RedisCacheManager
public class RedisCacheManager implements CacheManager {
    @Override
    public <K, V> Cache<K, V> getCache(String cacheName) throws CacheException {
        System.out.println("缓存名称: "+cacheName);
        return new RedisCache<K,V>(cacheName);
    }
}
5.开RedisCache实现
public class RedisCache<K,V> implements Cache<K,V> {

    private String cacheName;

    public RedisCache() {
    }

    public RedisCache(String cacheName) {
        this.cacheName = cacheName;
    }

    @Override
    public V get(K k) throws CacheException {
        System.out.println("获取缓存:"+ k);
        return (V) getRedisTemplate().opsForHash().get(this.cacheName,k.toString());
    }

    @Override
    public V put(K k, V v) throws CacheException {
        System.out.println("设置缓存key: "+k+" value:"+v);
        getRedisTemplate().opsForHash().put(this.cacheName,k.toString(),v);
        return null;
    }

    @Override
    public V remove(K k) throws CacheException {
        return (V) getRedisTemplate().opsForHash().delete(this.cacheName,k.toString());
    }

    @Override
    public v remove(k k) throws CacheException {
        return (v) getRedisTemplate().opsForHash().delete(this.cacheName,k.toString());
    }

    @Override
    public void clear() throws CacheException {
        getRedisTemplate().delete(this.cacheName);
    }

    @Override
    public int size() {
        return getRedisTemplate().opsForHash().size(this.cacheName).intValue();
    }

    @Override
    public Set<k> keys() {
        return getRedisTemplate().opsForHash().keys(this.cacheName);
    }

    @Override
    public Collection<v> values() {
        return getRedisTemplate().opsForHash().values(this.cacheName);
    }

    private RedisTemplate getRedisTemplate(){
        RedisTemplate redisTemplate = (RedisTemplate) ApplicationContextUtils.getBean("redisTemplate");
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        return redisTemplate;
    }


    //封装获取redisTemplate
    private RedisTemplate getRedisTemplate(){
        RedisTemplate redisTemplate = (RedisTemplate) ApplicationContextUtils.getBean("redisTemplate");
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        return redisTemplate;
    }
}
6.启动项目测试发现报错

15

  • 错误解释: 由于shiro中提供的simpleByteSource实现没有实现序列化,所有在认证时出现错误信息

  • 解决方案: 需要自动salt实现序列化

    • 自定义salt实现序列化

      //自定义salt实现  实现序列化接口
public class MyByteSource extends SimpleByteSource implements Serializable {
    public MyByteSource(String string) {
        super(string);
    }
}

    • 在realm中使用自定义salt

       @Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
  System.out.println("==========================");
  //根据身份信息
  String principal = (String) token.getPrincipal();
  //在工厂中获取service对象
  UserService userService = (UserService) ApplicationContextUtils.getBean("userService");
  User user = userService.findByUserName(principal);
  if(!ObjectUtils.isEmpty(user)){
    return new SimpleAuthenticationInfo(user.getUsername(),user.getPassword(), 
                                      new MyByteSource(user.getSalt()),this.getName());
  }
  return null;
}

      14

7.再次启动测试,发现可以成功放入redis缓存

13

4. 加入验证码验证

0.开发页面加入验证码

  • 开发控制器

    @RequestMapping("getImage")
public void getImage(HttpSession session, HttpServletResponse response) throws IOException {
  //生成验证码
  String code = VerifyCodeUtils.generateVerifyCode(4);
  //验证码放入session
  session.setAttribute("code",code);
  //验证码存入图片
  ServletOutputStream os = response.getOutputStream();
  response.setContentType("image/png");
  VerifyCodeUtils.outputImage(220,60,os,code);
}

  • 放行验证码

    12

  • 开发页面

    11

  • 修改认证流程

    @RequestMapping("login")
    public String login(String username, String password,String code,HttpSession session) {
        //比较验证码
        String codes = (String) session.getAttribute("code");
        try {
            if (codes.equalsIgnoreCase(code)){
                //获取主体对象
                Subject subject = SecurityUtils.getSubject();
                    subject.login(new UsernamePasswordToken(username, password));
                    return "redirect:/index.jsp";
            }else{
                throw new RuntimeException("验证码错误!");
            }
        } catch (UnknownAccountException e) {
            e.printStackTrace();
            System.out.println("用户名错误!");
        } catch (IncorrectCredentialsException e) {
            e.printStackTrace();
            System.out.println("密码错误!");
        }catch (Exception e){
            e.printStackTrace();
            System.out.println(e.getMessage());
        }
        return "redirect:/login.jsp";
    }

  • 修改salt不能序列化的问题

    //自定义salt实现  实现序列化接口
public class MyByteSource implements ByteSource,Serializable {

    private  byte[] bytes;
    private String cachedHex;
    private String cachedBase64;

    //加入无参数构造方法实现序列化和反序列化
    public MyByteSource(){

    }

    public MyByteSource(byte[] bytes) {
        this.bytes = bytes;
    }

    public MyByteSource(char[] chars) {
        this.bytes = CodecSupport.toBytes(chars);
    }

    public MyByteSource(String string) {
        this.bytes = CodecSupport.toBytes(string);
    }

    public MyByteSource(ByteSource source) {
        this.bytes = source.getBytes();
    }

    public MyByteSource(File file) {
        this.bytes = (new MyByteSource.BytesHelper()).getBytes(file);
    }

    public MyByteSource(InputStream stream) {
        this.bytes = (new MyByteSource.BytesHelper()).getBytes(stream);
    }

    public static boolean isCompatible(Object o) {
        return o instanceof byte[] || o instanceof char[] || o instanceof String || o instanceof ByteSource || o instanceof File || o instanceof InputStream;
    }

    public byte[] getBytes() {
        return this.bytes;
    }

    public boolean isEmpty() {
        return this.bytes == null || this.bytes.length == 0;
    }

    public String toHex() {
        if (this.cachedHex == null) {
            this.cachedHex = Hex.encodeToString(this.getBytes());
        }

        return this.cachedHex;
    }

    public String toBase64() {
        if (this.cachedBase64 == null) {
            this.cachedBase64 = Base64.encodeToString(this.getBytes());
        }

        return this.cachedBase64;
    }

    public String toString() {
        return this.toBase64();
    }

    public int hashCode() {
        return this.bytes != null && this.bytes.length != 0 ? Arrays.hashCode(this.bytes) : 0;
    }

    public boolean equals(Object o) {
        if (o == this) {
            return true;
        } else if (o instanceof ByteSource) {
            ByteSource bs = (ByteSource)o;
            return Arrays.equals(this.getBytes(), bs.getBytes());
        } else {
            return false;
        }
    }

    private static final class BytesHelper extends CodecSupport {
        private BytesHelper() {
        }

        public byte[] getBytes(File file) {
            return this.toBytes(file);
        }

        public byte[] getBytes(InputStream stream) {
            return this.toBytes(stream);
        }
    }
}
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原文地址：https://www.cnblogs.com/cainiaoxiaoxie/p/13035352.html