shiro实战教程（二）-阿里云开发者社区

5.7 开发授权

1.realm的实现

public class CustomerRealm extends AuthorizingRealm {
    //认证方法
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
        String primaryPrincipal = (String) principals.getPrimaryPrincipal();
        System.out.println("primaryPrincipal = " + primaryPrincipal);
        SimpleAuthorizationInfo simpleAuthorizationInfo = new SimpleAuthorizationInfo();
        simpleAuthorizationInfo.addRole("admin");
        simpleAuthorizationInfo.addStringPermission("user:update:*");
        simpleAuthorizationInfo.addStringPermission("product:*:*");
        return simpleAuthorizationInfo;
    }
    //授权方法
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        String principal = (String) token.getPrincipal();
        if("xiaochen".equals(principal)){
            String password = "3c88b338102c1a343bcb88cd3878758e";
            String salt = "Q4F%";
            return new SimpleAuthenticationInfo(principal,password, 
                                                ByteSource.Util.bytes(salt),this.getName());
        }
        return null;
    }
}

2.授权

public class TestAuthenticatorCusttomerRealm {
    public static void main(String[] args) {
        //创建securityManager
        DefaultSecurityManager defaultSecurityManager = new DefaultSecurityManager();
        //IniRealm realm = new IniRealm("classpath:shiro.ini");
        //设置为自定义realm获取认证数据
        CustomerRealm customerRealm = new CustomerRealm();
        //设置md5加密
        HashedCredentialsMatcher credentialsMatcher = new HashedCredentialsMatcher();
        credentialsMatcher.setHashAlgorithmName("MD5");
        credentialsMatcher.setHashIterations(1024);//设置散列次数
        customerRealm.setCredentialsMatcher(credentialsMatcher);
        defaultSecurityManager.setRealm(customerRealm);
        //将安装工具类中设置默认安全管理器
        SecurityUtils.setSecurityManager(defaultSecurityManager);
        //获取主体对象
        Subject subject = SecurityUtils.getSubject();
        //创建token令牌
        UsernamePasswordToken token = new UsernamePasswordToken("xiaochen", "123");
        try {
            subject.login(token);//用户登录
            System.out.println("登录成功~~");
        } 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!!!");
        }
        //认证通过
        if(subject.isAuthenticated()){
            //基于角色权限管理
            boolean admin = subject.hasRole("admin");
            System.out.println(admin);
            boolean permitted = subject.isPermitted("product:create:001");
            System.out.println(permitted);
        }
    }
}

6.整合SpringBoot项目实战

6.0 整合思路

6.1 创建springboot项目

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

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

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";
    }
}

6.启动springboot应用访问index

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);

/** 代表拦截项目中一切资源 authc 代表shiro中的一个filter的别名,详细内容看文档的shirofilter列表

8.重启项目访问查看

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

<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

4.退出之后访问受限资源立即返回认证界面

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>

shiro实战教程（二）