Springboot整合Shiro

Posted 2020-11-27 tianqiqing21du

Springboot整合Shiro

1、导入依赖

<!--https://mvnrepository.com/artifact/org.apache.shiro/shiro-spring-boot-web-starter-->
    <dependency>
        <groupId>org.apache.shiro</groupId>
        <artifactId>shiro-spring-boot-web-starter</artifactId>
        <version>1.5.2</version>
    </dependency>

2、配置ShiroConfig

• 目录如下

  com

  config

  ShiroConfig.java

  UserRealm.java

  controller

  RouterController.java

  SpringbootShrioApplication

• shiro有三个核心（配置时都必须装配成Bean）：

  • Subject（用户）
  • SecurityManager（管理用户）

• Realm（连接数据）

• 开始配置ShiroConfig，从底层开始配置（从下往上），Realm需要额外写一个类UserRealm，这个类便是shiro的核心

  @Configuration
  public class ShiroConfig{
      
      //shriofilterbean
      //这个方法名必须为shiroFilterFactoryBean，否则报错
      @Bean
      public ShiroFilterFactoryBean shiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager securityManager){
          System.out.println("subject@");
          ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();
          //关联securityManager
          bean.setSecurityManager(securityManager);
  
          //给请求设置权限
          //authc：需要认证才可访问
          //anon：无需认证也能访问
          Map<String,String> filter = new LinkedHashMap<>();
          filter.put("/user/*","authc");
          filter.put("/","anon");
          bean.setFilterChainDefinitionMap(filter);
  
          //当没有权限，跳转到此登陆界面
          bean.setLoginUrl("/login");
  
          return bean;
      }
  
      //securityManager
      @Bean
      public DefaultWebSecurityManager securityManager(@Qualifier("realm") UserRealm realm){
          DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
          //关联realm
          securityManager.setRealm(realm);
          return securityManager;
      }
  
      //realm
      @Bean
      public UserRealm realm(){
          return new UserRealm();
    }
  

  UserRealm只需继承AuthorizingRealm类即可，要实现如下两个方法，本类为shiro核心：

  //自定义的realm
  public class UserRealm extends AuthorizingRealm {
      @Override
      protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
          System.out.println("授权");
          return null;
      }
  
      @Override
      protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
          System.out.println("认证");
          return null;
      }
  }
  

3、实现用户登陆认证

• 流程：

  • 将用户提交的表单信息封装成令牌token
  • 用token登陆，此时调用UserRealm类中的doGetAuthenticationInfo（）方法来进行认证
  • 若用户名或密码错误，doGetAuthenticationInfo（）会抛出异常，反之，若无异常抛出，则登陆成功

• controller接受请求代码（用户提交表单时用controller接收）：

  @RequestMapping("/login")
  public String login(String usr, String pwd, Model model){
  
      //获取当前用户
      Subject subject = SecurityUtils.getSubject();
  
      //封装用户的登陆数据，生成令牌
      UsernamePasswordToken token = new UsernamePasswordToken(usr,pwd);
  
      //用令牌登陆，如果没有异常则登陆成功
      try{
          subject.login(token);
          //无异常则登陆成功
          return "index";
      }catch(UnknownAccountException e){
          model.addAttribute("msg","用户名错误");
          return "login";
      }catch(IncorrectCredentialsException e){
          model.addAttribute("msg","密码错误");
          return "login";
      }
  }
  

• getAuthenticationInfo（）代码:

  @Override
  protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
      System.out.println("认证");
      //用户名，密码，应该从数据库取，此处仅测试
      String usr="wagn";
      String pwd="123";
  
      //先取令牌
      UsernamePasswordToken token = (UsernamePasswordToken)authenticationToken;
  
      //验证用户名
      if(!usr.equals(token.getUsername())){
          return null;
      }
  
      //验证密码，Shiro自动验证,只需要把数据库的密码传过去就好了
      return new SimpleAuthenticationInfo("",pwd,"");
  }