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【WEEK13】【DAY3】Shiro第三部分【中文版】

news 来源：原创 2024/6/16 22:47:29

2024.5.22 Wednesday
接上文【WEEK13】【DAY2】Shiro第二部分【中文版】

15.4.登录拦截
- 15.4.1.修改ShiroConfig.java
- 15.4.2.新建login.html页面
- 15.4.3.修改MyController.java
- 15.4.4.再次修改ShiroConfig.java
- 15.4.5.重启
15.5.用户认证
- 15.5.1.修改MyController.java
- 15.5.2.修改login.html
- 15.5.3.重启
- 15.5.4.修改UserRealm.java
- 15.5.5.重启
- - 15.5.5.1.输入正确用户名和密码
  - 15.5.5.2.输入错误用户名
  - 15.5.5.3.输入错误密码

15.4.登录拦截

15.4.1.修改ShiroConfig.java

package com.P40.config;import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;@Configuration
public class ShiroConfig {//ShiroFilterFactoryBean@Beanpublic ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager){ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();//要配置什么：点击进入ShiroFilterFactoryBean源码查看//设置安全管理器bean.setSecurityManager(defaultWebSecurityManager);//添加shiro的内置过滤器Map<String,String> filterMap = new LinkedHashMap<>();filterMap.put("/user/add","authc");filterMap.put("/user/update","authc");//仅在此处修改add和update页面的访问权限后，重启项目，点击add或update都将被拦截，显示404错误，希望跳转到登录页面bean.setFilterChainDefinitionMap(filterMap);return bean;}//DefaultWebSecurityManager...
}

- anon： 无需认证就可以访问
- authc： 必须认证了才能访问
- user： 必须拥有记住我功能才能用
- perms： 拥有对某个资源的权限才能访问
- role： 拥有某个角色权限

15.4.2.新建login.html页面

在这里插入图片描述

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<h1>登录</h1><hr>
<form action=""><p>用户名：<input type="text" name="username"></p><p>密码：<input type="text" name="password"></p><p><input type="submit"></p>
</form>
</body>
</html>

15.4.3.修改MyController.java

添加访问login页面的方法

package com.P40.controller;import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;@Controller
public class MyController {@RequestMapping({"/", "/index"})public String toIndex(Model model){model.addAttribute("msg","hello, Shiro");return "index";}@RequestMapping("/user/add")public String add(){return "user/add";}@RequestMapping("/user/update")public String update(){return "user/update";}@RequestMapping("/toLogin")public String toLogin(){return "login";}
}

15.4.4.再次修改ShiroConfig.java

使用通配符，跳转登录页

package com.P40.config;import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.util.LinkedHashMap;
import java.util.Map;@Configuration
public class ShiroConfig {//ShiroFilterFactoryBean@Beanpublic ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager){ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();//要配置什么：点击进入ShiroFilterFactoryBean源码查看//设置安全管理器bean.setSecurityManager(defaultWebSecurityManager);//添加shiro的内置过滤器/*anon： 无需认证就可以访问authc： 必须认证了才能访问user： 必须拥有记住我功能才能用perms： 拥有对某个资源的权限才能访问role： 拥有某个角色权限*///登录拦截Map<String,String> filterMap = new LinkedHashMap<>();
//        filterMap.put("/user/add","authc");
//        filterMap.put("/user/update","authc");//仅在此处修改add和update页面的访问权限后，重启项目，点击add或update都将被拦截，显示404错误，希望跳转到登录页面filterMap.put("/user/*","authc");   //也可以使用通配符实现（替代上两行的/user/add和/user/update）bean.setFilterChainDefinitionMap(filterMap);//如果没有权限，则需要跳转到登录页bean.setLoginUrl("/toLogin");   //设置登录的请求return bean;}//DefaultWebSecurityManager@Bean(name = "securityManager") //给这个类起别名，便于ShiroFilterFactoryBean调用public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){    //获取UserRealm,但是这里好像不需要使用注解，可以直接调用DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();//默认的DefaultWebSecurityManager类的类名是defaultWebSecurityManager，只是在这里修改成securityManager//关联UserRealmsecurityManager.setRealm(userRealm);return securityManager;}//创建realm对象，需要自定义类@Beanpublic UserRealm userRealm(){return new UserRealm();}//创建时顺序是相反的（从real->DefaultWebSecurityManager->ShiroFilterFactoryBean）
}

15.4.5.重启

在首页点击add或者update后跳转到登录页
http://localhost:8080/toLogin
在这里插入图片描述

15.5.用户认证

15.5.1.修改MyController.java

package com.P40.controller;import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;@Controller
public class MyController {@RequestMapping({"/", "/index"})public String toIndex(Model model){model.addAttribute("msg","hello, Shiro");return "index";}@RequestMapping("/user/add")public String add(){return "user/add";}@RequestMapping("/user/update")public String update(){return "user/update";}@RequestMapping("/toLogin")public String toLogin(){return "login";}@RequestMapping("/login")public String login(String username, String password, Model model){//获取当前的用户Subject subject = SecurityUtils.getSubject();//封装用户的登录数据UsernamePasswordToken token = new UsernamePasswordToken(username,password);//执行登录的方法，没有异常则成功了，选中代码后Ctrl+Alt+T添加try catchtry {subject.login(token);return "index";} catch (UnknownAccountException e) {   //用户名不存在model.addAttribute("msg","用户名错误");return "login";} catch (IncorrectCredentialsException e) {   //密码错误model.addAttribute("msg","密码错误");return "login";}}
}

15.5.2.修改login.html

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<h1>登录</h1><hr>
<p th:text="${msg}" style="color: cadetblue"></p><form th:action="@{/login}"><p>用户名：<input type="text" name="username"></p><p>密码：<input type="text" name="password"></p><p><input type="submit"></p>
</form>
</body>
</html>

15.5.3.重启

任意输入一组用户名和密码
在这里插入图片描述

说明执行了

15.5.4.修改UserRealm.java

package com.P40.config;import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.Subject;//UserRealm是一个bean
//自定义的UserRealm,必须要继承AuthorizingRealm方法，然后implement methods(alt+insert)
public class UserRealm extends AuthorizingRealm {//授权@Overrideprotected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {System.out.println("do doGetAuthorizationInfo 授权");return null;}//认证@Overrideprotected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {System.out.println("do doGetAuthorizationInfo 认证");//用户名，密码————数据读取String name = "root";String password = "1";UsernamePasswordToken userToken = (UsernamePasswordToken) authenticationToken;if (!userToken.getUsername().equals(name)){return null;    //抛出UnknownAccountException异常（自动的）}//密码认证,shiro运行return new SimpleAuthenticationInfo("",password,"");}
}