【原】无脑操作：IDEA + maven + Shiro + SpringBoot + JPA + Thymeleaf实现基础授权权限

上一篇《【原】无脑操作：IDEA + maven + Shiro + SpringBoot + JPA + Thymeleaf实现基础认证权限》介绍了实现Shiro的基础认证。本篇谈谈实现Shiro的基础授权。

需求：

① 某系统有公共模块、领导模块、管理员模块三个业务模块，均需要登录系统后才可以访问。

② admin、leader、employee三个人职位分别是管理员、领导、员工，均可登录系统。

③ 不同职位的人登录系统后，能看到的功能模块不同。管理员可以访问全部三个模块。领导可以访问除去管理员模块外的两个模块。员工只能访问公共模块。

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分析：

典型的运用授权权限的需求，继续考虑使用Shiro。

问题1、认证和授权怎么理解呢？

答：一点粗浅理解，比如通过了美国的签证能进入美国了，这就是获得了认证。

但是进入美国了，也只能去有授权的地方玩玩，五角大楼能进么？没有授权是不给进的。

所以，授权是在认证获得后进一步的安全管理。

问题2、需求在描述什么场景？

答：需求中包含了基于角色的权限访问控制RBAC（Role-Based Access Control）的设计思路。

简单来说，单个人对某某资源可操作。

进一步考虑，如果是多个人对某某资源可操作呢？需要重复的这样设置么？运用归纳思想，把这样的多个人归为一类，形成了角色的概念。即这一角色的多个人对某某资源可操作。

RBAC认为权限授权实际上是Who、What、How的问题。在RBAC模型中，who、what、how构成了访问权限三元组,也就是“Who对What(Which)进行How的操作”。

问题3、针对本需求的RBAC设计是怎么样的？

答：简化设计为：用户和角色为多对一关系、角色和资源为多对多关系

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0、数据库建表init.sql

 1 -- 初始化
 2 DROP TABLE sys_user;
 3 DROP TABLE sys_role;
 4 DROP TABLE sys_resource;
 5 DROP TABLE sys_role_resource;
 6 
 7 -- 用户信息表
 8 CREATE TABLE sys_user
 9 (
10     userid INT AUTO_INCREMENT PRIMARY KEY COMMENT '用户编号',
11     username VARCHAR(10) NOT NULL COMMENT '用户名称',
12     `password` VARCHAR(10) NOT NULL COMMENT '用户密码',
13     roleid INT NOT NULL COMMENT '角色编号'
14 );
15 
16 INSERT INTO sys_user VALUES(NULL, 'admin', '123', 1), (NULL, 'leader', '456', 2), (NULL, 'employee', '789', 3);
17 
18 SELECT * FROM sys_user;
19 
20 -- 角色信息表
21 CREATE TABLE sys_role
22 (
23     roleid INT AUTO_INCREMENT PRIMARY KEY COMMENT '角色编号',
24     rolename VARCHAR(10) NOT NULL COMMENT '角色名称'
25 );
26 
27 INSERT INTO sys_role VALUES(NULL, '管理员'), (NULL, '领导'), (NULL, '员工');
28 
29 SELECT * FROM sys_role;
30 
31 -- 资源信息表
32 CREATE TABLE sys_resource
33 (
34     resourceid INT AUTO_INCREMENT PRIMARY KEY COMMENT '资源编号',
35     resourcename VARCHAR(10) NOT NULL COMMENT '资源名称',
36     resourceurl VARCHAR(50) NOT NULL COMMENT '资源URL'
37 );
38 
39 INSERT INTO sys_resource VALUES
40 (NULL, '公共模块', 'publicModule'),
41 (NULL, '领导模块', 'leaderModule'),
42 (NULL, '管理员模块', 'adminModule');
43 
44 SELECT * FROM sys_resource;
45 
46 -- 角色资源关联表
47 CREATE TABLE sys_role_resource
48 (
49     id INT AUTO_INCREMENT PRIMARY KEY COMMENT '关联编号',
50     roleid INT NOT NULL COMMENT '角色编号',
51     resourceid INT NOT NULL COMMENT '资源编号'
52 );
53 
54 INSERT INTO sys_role_resource VALUES
55 (NULL, 1, 1), (NULL, 1, 2), (NULL, 1, 3),
56 (NULL, 2, 1), (NULL, 2, 2),
57 (NULL, 3, 1);
58 
59 SELECT * FROM sys_role_resource;
60 
61 -- 获取用户能访问的资源URL
62 SELECT u.userid, rs.resourceurl
63 FROM sys_role_resource AS rr
64 INNER JOIN sys_resource AS rs ON rr.resourceid = rs.resourceid
65 INNER JOIN sys_role AS r ON rr.roleid = r.roleid
66 INNER JOIN sys_user AS u ON u.roleid = r.roleid
67 WHERE u.userid = 1;

1、编写项目对象模型文件pom.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0"
 3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5     <modelVersion>4.0.0</modelVersion>
 6 
 7     <groupId>cn.temptation</groupId>
 8     <artifactId>studyShiro</artifactId>
 9     <version>1.0-SNAPSHOT</version>
10 
11     <parent>
12         <groupId>org.springframework.boot</groupId>
13         <artifactId>spring-boot-starter-parent</artifactId>
14         <version>2.0.4.RELEASE</version>
15     </parent>
16 
17     <dependencies>
18         <!-- web -->
19         <dependency>
20             <groupId>org.springframework.boot</groupId>
21             <artifactId>spring-boot-starter-web</artifactId>
22         </dependency>
23         <!-- thymeleaf -->
24         <dependency>
25             <groupId>org.springframework.boot</groupId>
26             <artifactId>spring-boot-starter-thymeleaf</artifactId>
27         </dependency>
28         <!-- spring data jpa -->
29         <dependency>
30             <groupId>org.springframework.boot</groupId>
31             <artifactId>spring-boot-starter-data-jpa</artifactId>
32         </dependency>
33         <!-- mariadb -->
34         <dependency>
35             <groupId>org.mariadb.jdbc</groupId>
36             <artifactId>mariadb-java-client</artifactId>
37             <version>2.2.5</version>
38         </dependency>
39         <!-- shiro -->
40         <dependency>
41             <groupId>org.apache.shiro</groupId>
42             <artifactId>shiro-spring</artifactId>
43             <version>1.4.0</version>
44         </dependency>
45         <!-- thymeleaf-extras-shiro -->
46         <dependency>
47             <groupId>com.github.theborakompanioni</groupId>
48             <artifactId>thymeleaf-extras-shiro</artifactId>
49             <version>2.0.0</version>
50         </dependency>
51         <!-- 热启动 -->
52         <dependency>
53             <groupId>org.springframework.boot</groupId>
54             <artifactId>spring-boot-devtools</artifactId>
55             <optional>true</optional>
56         </dependency>
57     </dependencies>
58 </project>

2、编写项目配置文件application.properties

 1 # 数据库访问配置
 2 # 对应MariaDB驱动
 3 spring.datasource.driverClassName=org.mariadb.jdbc.Driver
 4 
 5 # 数据源配置
 6 spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test
 7 spring.datasource.username=root
 8 spring.datasource.password=sa
 9 
10 # 配置Springboot默认支持的Hikari数据库连接池
11 spring.datasource.type=com.zaxxer.hikari.HikariDataSource
12 spring.datasource.hikari.minimum-idle=5
13 spring.datasource.hikari.maximum-pool-size=15
14 spring.datasource.hikari.auto-commit=true
15 spring.datasource.hikari.idle-timeout=30000
16 spring.datasource.hikari.pool-name=DatebookHikariCP
17 spring.datasource.hikari.max-lifetime=1800000
18 spring.datasource.hikari.connection-timeout=30000
19 spring.datasource.hikari.connection-test-query=SELECT 1
20 
21 # Spring Data JPA配置
22 spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
23 spring.jpa.properties.hibernate.hbm2ddl.auto=update
24 spring.jpa.show-sql=true
25 spring.jpa.properties.hibernate.format_sql=true
26 
27 # 格式化输出的json字符串
28 spring.jackson.serialization.indent_output=true
29 
30 # 设置控制台彩色打印
31 spring.output.ansi.enabled=ALWAYS

3、编写项目启动类Application.java

 1 package cn.temptation;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 
 6 @SpringBootApplication
 7 public class Application {
 8     public static void main(String[] args) {
 9         // SpringBoot项目启动
10         SpringApplication.run(Application.class, args);
11     }
12 }

4、编写全局异常处理类GlobalExceptionHandler.java

 1 package cn.temptation.util;
 2 
 3 import org.springframework.web.bind.annotation.ControllerAdvice;
 4 import org.springframework.web.bind.annotation.ExceptionHandler;
 5 
 6 /**
 7  * 全局异常处理类
 8  */
 9 @ControllerAdvice
10 public class GlobalExceptionHandler {
11     @ExceptionHandler(value = Exception.class)
12     public String errorHandler(Exception exception) {
13         return "redirect:/error/500";
14     }
15 }

5、编写错误页配置类ErrorPageConfig.java 和错误页控制器ErrorController.java

错误页配置类ErrorPageConfig.java

 1 package cn.temptation.util;
 2 
 3 import org.springframework.boot.web.server.ErrorPage;
 4 import org.springframework.boot.web.server.ErrorPageRegistrar;
 5 import org.springframework.boot.web.server.ErrorPageRegistry;
 6 import org.springframework.http.HttpStatus;
 7 import org.springframework.stereotype.Component;
 8 
 9 /**
10  * 错误页配置类
11  */
12 @Component
13 public class ErrorPageConfig implements ErrorPageRegistrar {
14     @Override
15     public void registerErrorPages(ErrorPageRegistry errorPageRegistry) {
16         // 错误类型为401（无访问权限），显示401.html页面
17         ErrorPage errorPage401 = new ErrorPage(HttpStatus.UNAUTHORIZED, "/error/401");
18 
19         // 错误类型为404（找不到资源），显示404.html页面
20         ErrorPage errorPage404 = new ErrorPage(HttpStatus.NOT_FOUND, "/error/404");
21 
22         // 错误类型为500（服务器内部错误），显示500.html页面
23         ErrorPage errorPage500 = new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/error/500");
24 
25         errorPageRegistry.addErrorPages(errorPage401, errorPage404, errorPage500);
26     }
27 }

错误页控制器ErrorController.java

 1 package cn.temptation.util;
 2 
 3 import org.springframework.stereotype.Controller;
 4 import org.springframework.web.bind.annotation.GetMapping;
 5 import org.springframework.web.bind.annotation.RequestMapping;
 6 
 7 /**
 8  * 错误页控制器
 9  */
10 @Controller
11 @RequestMapping("/error")
12 public class ErrorController {
13     // 401页面
14     @GetMapping(value = "/401")
15     public String error_401() {
16         return "error/error_401";
17     }
18 
19     // 404页面
20     @GetMapping(value = "/404")
21     public String error_404() {
22         return "error/error_404";
23     }
24 
25     // 500页面
26     @GetMapping(value = "/500")
27     public String error_500() {
28         return "error/error_500";
29     }
30 }

6、编写错误页error_401.html、error_404.html 和 error_500.html

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta charset="utf-8">
 5     <meta http-equiv="refresh" content="5;URL=/login">
 6     <title>401</title>
 7     <style>
 8         ::-moz-selection {
 9             background: #b3d4fc;
10             text-shadow: none;
11         }
12 
13         ::selection {
14             background: #b3d4fc;
15             text-shadow: none;
16         }
17 
18         html {
19             padding: 30px 10px;
20             font-size: 20px;
21             line-height: 1.4;
22             color: #737373;
23             background: #f0f0f0;
24             font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
25             -webkit-text-size-adjust: 100%;
26             -ms-text-size-adjust: 100%;
27         }
28 
29         body {
30             max-width: 550px;
31             _width: 550px;
32             padding: 30px 20px 50px;
33             border: 1px solid #b3b3b3;
34             border-radius: 4px;
35             margin: 0 auto;
36             box-shadow: 0 1px 10px #a7a7a7, inset 0 1px 0 #fff;
37             background: #fcfcfc;
38         }
39 
40         h1 {
41             margin: 0 10px;
42             font-size: 50px;
43             text-align: center;
44         }
45 
46         h1 span {
47             color: #bbb;
48         }
49 
50         h3 {
51             margin: 1.5em 0 0.5em;
52         }
53 
54         p {
55             margin: 1em 0;
56         }
57 
58         ul {
59             padding: 0 0 0 40px;
60             margin: 1em 0;
61         }
62 
63         .container {
64             max-width: 500px;
65             _width: 500px;
66             margin: 0 auto;
67         }
68     </style>
69 </head>
70 <body>
71 <div class="container">
72     <h1>没有授权</h1>
73     <p>抱歉，您没有授权访问该页面</p>
74 </div>
75 </body>
76 </html>

error_401

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta charset="utf-8">
 5     <meta http-equiv="refresh" content="5;URL=/login">
 6     <title>404</title>
 7     <style>
 8         ::-moz-selection {
 9             background: #b3d4fc;
10             text-shadow: none;
11         }
12 
13         ::selection {
14             background: #b3d4fc;
15             text-shadow: none;
16         }
17 
18         html {
19             padding: 30px 10px;
20             font-size: 20px;
21             line-height: 1.4;
22             color: #737373;
23             background: #f0f0f0;
24             font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
25             -webkit-text-size-adjust: 100%;
26             -ms-text-size-adjust: 100%;
27         }
28 
29         body {
30             max-width: 550px;
31             _width: 550px;
32             padding: 30px 20px 50px;
33             border: 1px solid #b3b3b3;
34             border-radius: 4px;
35             margin: 0 auto;
36             box-shadow: 0 1px 10px #a7a7a7, inset 0 1px 0 #fff;
37             background: #fcfcfc;
38         }
39 
40         h1 {
41             margin: 0 10px;
42             font-size: 50px;
43             text-align: center;
44         }
45 
46         h1 span {
47             color: #bbb;
48         }
49 
50         h3 {
51             margin: 1.5em 0 0.5em;
52         }
53 
54         p {
55             margin: 1em 0;
56         }
57 
58         ul {
59             padding: 0 0 0 40px;
60             margin: 1em 0;
61         }
62 
63         .container {
64             max-width: 500px;
65             _width: 500px;
66             margin: 0 auto;
67         }
68     </style>
69 </head>
70 <body>
71 <div class="container">
72     <h1>没有找到<span>:(</span></h1>
73     <p>抱歉，您试图访问的页面不存在</p>
74     <p>可能是如下原因：</p>
75     <ul>
76         <li>一个错误的地址</li>
77         <li>一个过时的链接</li>
78     </ul>
79 </div>
80 </body>
81 </html>

error_404

 1 <!DOCTYPE html>
 2 <html>
 3 <head>
 4     <meta charset="utf-8">
 5     <meta http-equiv="refresh" content="5;URL=/login">
 6     <title>500</title>
 7     <style>
 8         ::-moz-selection {
 9             background: #b3d4fc;
10             text-shadow: none;
11         }
12 
13         ::selection {
14             background: #b3d4fc;
15             text-shadow: none;
16         }
17 
18         html {
19             padding: 30px 10px;
20             font-size: 20px;
21             line-height: 1.4;
22             color: #737373;
23             background: #f0f0f0;
24             font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
25             -webkit-text-size-adjust: 100%;
26             -ms-text-size-adjust: 100%;
27         }
28 
29         body {
30             max-width: 550px;
31             _width: 550px;
32             padding: 30px 20px 50px;
33             border: 1px solid #b3b3b3;
34             border-radius: 4px;
35             margin: 0 auto;
36             box-shadow: 0 1px 10px #a7a7a7, inset 0 1px 0 #fff;
37             background: #fcfcfc;
38         }
39 
40         h1 {
41             margin: 0 10px;
42             font-size: 50px;
43             text-align: center;
44         }
45 
46         h1 span {
47             color: #bbb;
48         }
49 
50         h3 {
51             margin: 1.5em 0 0.5em;
52         }
53 
54         p {
55             margin: 1em 0;
56         }
57 
58         ul {
59             padding: 0 0 0 40px;
60             margin: 1em 0;
61         }
62 
63         .container {
64             max-width: 500px;
65             _width: 500px;
66             margin: 0 auto;
67         }
68     </style>
69 </head>
70 <body>
71 <div class="container">
72     <h1>内部错误</h1>
73     <p>抱歉，服务器上出现了错误......</p>
74 </div>
75 </body>
76 </html>

error_500

6、编写登录页面login.html、首页页面index.html、公共模块页page_public.html、领导模块页page_leader.html 和管理员模块页page_admin.html

 1 <!DOCTYPE html>
 2 <html xmlns:th="http://www.thymeleaf.org">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>系统登录</title>
 6 </head>
 7 <body>
 8 <div th:text="${msg}" style="color: red"></div>
 9 <form action="doLogin" method="post">
10 帐号：<input type="text" id="txtUsername" name="username" /><br/>
11 密码：<input type="password" id="txtPassword" name="password" /><br/><br/>
12 <input type="submit" value="提交" />&nbsp;<input type="reset" value="重置" />
13 </form>
14 </body>
15 </html>

登录页

 1 <!DOCTYPE html>
 2 <html xmlns:th="http://www.thymeleaf.org" xmlns:shiro="http://www.pollix.at/thymeleaf/shiro">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>系统首页</title>
 6 </head>
 7 <body>
 8 <div th:text="${'欢迎您，' + currentuser}" style="color: red;float: left;"></div>
 9 <div style="color: red;float: right;"><a href="doLogout">注销</a></div>
10 <!--
11 Thymeleaf中使用Shiro标签，具备授权才能看见
12 注意：如果不适用Shiro标签，没有授权的访问将产生401响应吗，执行ErrorPageConfig类 和 ErrorController类处理
13 -->
14 <!--<div style="clear: both;">公共模块：<a href="publicModule">公共模块</a></div>-->
15 <!--<div style="clear: both;">领导模块：<a href="leaderModule">领导模块</a></div>-->
16 <!--<div style="clear: both;">管理员模块：<a href="adminModule">管理员模块</a></div>-->
17 <div style="clear: both;" shiro:hasPermission="user:publicModule">公共模块：<a href="publicModule">公共模块</a></div>
18 <div style="clear: both;" shiro:hasPermission="user:leaderModule">领导模块：<a href="leaderModule">领导模块</a></div>
19 <div style="clear: both;" shiro:hasPermission="user:adminModule">管理员模块：<a href="adminModule">管理员模块</a></div>
20 </body>
21 </html>

首页

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>公共模块</title>
 6 </head>
 7 <body>
 8 公共模块（管理员、领导、员工均可访问）
 9 </body>
10 </html>

公共模块页

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>领导模块</title>
 6 </head>
 7 <body>
 8 领导模块（管理员、领导均可访问）
 9 </body>
10 </html>

领导模块页

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>管理员模块</title>
 6 </head>
 7 <body>
 8 管理员模块（管理员可访问）
 9 </body>
10 </html>

管理员模块页

7、编写Shiro框架用配置类ShiroConfig.java 和自定义Realm类MyRealm.java

配置类ShiroConfig.java

  1 package cn.temptation.shiro;
  2 
  3 import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
  4 import cn.temptation.dao.ResourceDao;
  5 import cn.temptation.domain.Resource;
  6 import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
  7 import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
  8 import org.springframework.beans.factory.annotation.Autowired;
  9 import org.springframework.beans.factory.annotation.Qualifier;
 10 import org.springframework.context.annotation.Bean;
 11 import org.springframework.context.annotation.Configuration;
 12 
 13 import java.util.LinkedHashMap;
 14 import java.util.List;
 15 import java.util.Map;
 16 
 17 /**
 18  * Shiro配置类
 19  */
 20 @Configuration
 21 public class ShiroConfig {
 22     @Autowired
 23     private ResourceDao resourceDao;
 24 
 25     // 1、创建ShiroFilterFactoryBean
 26     @Bean
 27     public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager") DefaultWebSecurityManager defaultWebSecurityManager) {
 28         ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
 29         // 设置安全管理器
 30         shiroFilterFactoryBean.setSecurityManager(defaultWebSecurityManager);
 31 
 32         // 设置登录跳转页面
 33         shiroFilterFactoryBean.setLoginUrl("/login");
 34 
 35         /**
 36          * Shiro内置过滤器：实现权限相关的拦截
 37          *      常用过滤器：
 38          *          anon（认证用）：无需认证（登录）即可访问
 39          *          authc（认证用）：必须认证才可访问
 40          *          user（少用）：使用rememberMe功能可以访问
 41          *          perms（授权用）：必须得到资源权限才可访问
 42          *          role（授权用）：必须得到角色权限才可访问
 43          */
 44         Map<String, String> filterMap = new LinkedHashMap<>();
 45 
 46         // 放行登录请求
 47         filterMap.put("/doLogin", "anon");
 48 
 49         // 配置退出过滤器，退出代码Shiro已经实现
 50         filterMap.put("/logout", "logout");
 51 
 52         // 配置授权过滤器
 53 
 54         // 先代码写死，测试下
 55 //        filterMap.put("/publicModule", "perms[user:publicModule]");
 56 //        filterMap.put("/leaderModule", "perms[user:leaderModule]");
 57 //        filterMap.put("/adminModule", "perms[user:adminModule]");
 58 
 59         // 获取所有资源，并配置需要进行授权过滤的资源
 60         List<Resource> resources = resourceDao.findAll();
 61         resources.forEach(item -> {
 62             if (!"".equals(item.getResourceurl())) {
 63                 filterMap.put("/" + item.getResourceurl(), "perms[user:" + item.getResourceurl() + "]");
 64             }
 65         });
 66 
 67         // 过滤链定义，从上向下顺序执行，一般将/*放在最下边
 68         filterMap.put("/*", "authc");
 69 
 70         // 设置未授权界面
 71         shiroFilterFactoryBean.setUnauthorizedUrl("/error/401");
 72 
 73         shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
 74 
 75         return shiroFilterFactoryBean;
 76     }
 77 
 78     // 2、创建DefaultWebSecurityManager
 79     @Bean(name = "securityManager")
 80     public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("myRealm") MyRealm myRealm) {
 81         DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();
 82 
 83         // 关联Realm
 84         defaultWebSecurityManager.setRealm(myRealm);
 85 
 86         return defaultWebSecurityManager;
 87     }
 88 
 89     // 3、创建Realm
 90     @Bean(name = "myRealm")
 91     public MyRealm getRealm() {
 92         return new MyRealm();
 93     }
 94 
 95     // 4、配置ShiroDialect后，可以在页面使用Shiro标签
 96     @Bean
 97     public ShiroDialect getShiroDialect() {
 98         return new ShiroDialect();
 99     }
100 }

自定义Realm类MyRealm.java

 1 package cn.temptation.shiro;
 2 
 3 import cn.temptation.dao.ResourceDao;
 4 import cn.temptation.dao.UserDao;
 5 import cn.temptation.domain.User;
 6 import org.apache.shiro.authc.*;
 7 import org.apache.shiro.authz.AuthorizationInfo;
 8 import org.apache.shiro.authz.SimpleAuthorizationInfo;
 9 import org.apache.shiro.realm.AuthorizingRealm;
10 import org.apache.shiro.subject.PrincipalCollection;
11 import org.springframework.beans.factory.annotation.Autowired;
12 
13 import java.util.List;
14 
15 /**
16  * 自定义Realm
17  */
18 public class MyRealm extends AuthorizingRealm {
19     @Autowired
20     private UserDao userDao;
21     @Autowired
22     private ResourceDao resourceDao;
23 
24     // 授权处理
25     @Override
26     protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
27         // 获取当前登录获得认证的用户
28         User user = (User) principalCollection.getPrimaryPrincipal();
29         // 下句语句会抛出异常交由ErrorController类根据ErrorPageConfig类中注册的响应码和错误页面处理
30 //        System.out.println(1 / 0);
31 
32         if (user != null) {
33             // 给资源授权
34             SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
35 
36             // 先代码写死，测试下
37 //            info.addStringPermission("user:publicModule");
38 //            info.addStringPermission("user:leaderModule");
39 //            info.addStringPermission("user:adminModule");
40 
41             // 根据获得认证的用户编号查询该用户具备的资源URL集合
42             List<String> resourceurls = resourceDao.findByUserid(user.getUserid());
43 
44             // 遍历集合，组装成满足授权过滤器过滤格式，并添加到资源信息中
45             resourceurls.forEach(item -> info.addStringPermission("user:" + item));
46 
47             return info;
48         }
49 
50         return null;
51     }
52 
53     // 认证处理
54     @Override
55     protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
56         // 编写Shiro判断逻辑，判断账号和密码
57         // 1、判断账号
58         UsernamePasswordToken token = (UsernamePasswordToken) authenticationToken;
59 
60         User user = userDao.findByUsername(token.getUsername());
61         if (user == null) {
62             // 账号错误，Shiro底层会抛出UnknownAccountException异常
63             return null;
64         }
65 
66         // 2、判断密码
67         // 只做认证，principal可以设置为空字符串
68 //        return new SimpleAuthenticationInfo("", user.getPassword(), "");
69         // 认证后做授权处理，需要将获得认证的用户对象赋值给principal，授权处理时会用到
70         return new SimpleAuthenticationInfo(user, user.getPassword(), "");
71     }
72 }

8、编写用户实体类User.java、角色实体类Role.java 和资源实体类Resource.java

用户实体类User.java

 1 package cn.temptation.domain;
 2 
 3 import javax.persistence.*;
 4 
 5 @Entity
 6 @Table(name = "sys_user")
 7 public class User {
 8     @Id
 9     @GeneratedValue(strategy = GenerationType.IDENTITY)
10     @Column(name = "userid")
11     private Integer userid;
12 
13     @Column(name = "username")
14     private String username;
15 
16     @Column(name = "password")
17     private String password;
18 
19     @ManyToOne
20     @JoinColumn(name = "roleid", foreignKey = @ForeignKey(name = "none"))
21     private Role role;
22 
23     public Integer getUserid() {
24         return userid;
25     }
26 
27     public void setUserid(Integer userid) {
28         this.userid = userid;
29     }
30 
31     public String getUsername() {
32         return username;
33     }
34 
35     public void setUsername(String username) {
36         this.username = username;
37     }
38 
39     public String getPassword() {
40         return password;
41     }
42 
43     public void setPassword(String password) {
44         this.password = password;
45     }
46 
47     public Role getRole() {
48         return role;
49     }
50 
51     public void setRole(Role role) {
52         this.role = role;
53     }
54 }

角色实体类Role.java

 1 package cn.temptation.domain;
 2 
 3 import javax.persistence.*;
 4 import java.util.Set;
 5 
 6 @Entity
 7 @Table(name = "sys_role")
 8 public class Role {
 9     @Id
10     @GeneratedValue(strategy = GenerationType.IDENTITY)
11     @Column(name = "roleid")
12     private Integer roleid;
13 
14     @Column(name = "rolename")
15     private String rolename;
16 
17     @ManyToMany
18     @JoinTable(name = "sys_role_resource",
19             joinColumns = {@JoinColumn(name = "roleid", referencedColumnName = "roleid", foreignKey = @ForeignKey(name = "none"))},
20             inverseJoinColumns = {@JoinColumn(name = "resourceid", referencedColumnName = "resourceid", foreignKey = @ForeignKey(name = "none"))})
21     private Set<Resource> resources;
22 
23     public Integer getRoleid() {
24         return roleid;
25     }
26 
27     public void setRoleid(Integer roleid) {
28         this.roleid = roleid;
29     }
30 
31     public String getRolename() {
32         return rolename;
33     }
34 
35     public void setRolename(String rolename) {
36         this.rolename = rolename;
37     }
38 }

资源实体类Resource.java

 1 package cn.temptation.domain;
 2 
 3 import javax.persistence.*;
 4 
 5 @Entity
 6 @Table(name = "sys_resource")
 7 public class Resource {
 8     @Id
 9     @GeneratedValue(strategy = GenerationType.IDENTITY)
10     @Column(name = "resourceid")
11     private Integer resourceid;
12 
13     @Column(name = "resourcename")
14     private String resourcename;
15 
16     @Column(name = "resourceurl")
17     private String resourceurl;
18 
19     public Integer getResourceid() {
20         return resourceid;
21     }
22 
23     public void setResourceid(Integer resourceid) {
24         this.resourceid = resourceid;
25     }
26 
27     public String getResourcename() {
28         return resourcename;
29     }
30 
31     public void setResourcename(String resourcename) {
32         this.resourcename = resourcename;
33     }
34 
35     public String getResourceurl() {
36         return resourceurl;
37     }
38 
39     public void setResourceurl(String resourceurl) {
40         this.resourceurl = resourceurl;
41     }
42 }

9、编写用户控制器类UserController.java

 1 package cn.temptation.web;
 2 
 3 import org.apache.shiro.SecurityUtils;
 4 import org.apache.shiro.authc.IncorrectCredentialsException;
 5 import org.apache.shiro.authc.UnknownAccountException;
 6 import org.apache.shiro.authc.UsernamePasswordToken;
 7 import org.apache.shiro.subject.Subject;
 8 import org.springframework.stereotype.Controller;
 9 import org.springframework.ui.Model;
10 import org.springframework.web.bind.annotation.RequestMapping;
11 
12 @Controller
13 public class UserController {
14     // 访问登录页
15     @RequestMapping("/login")
16     public String login() {
17         // 下句语句会抛出异常交由GlobalExceptionHandler类的errorHandler方法处理
18 //        System.out.println(1 / 0);
19 
20         return "login";
21     }
22 
23     // 访问首页
24     @RequestMapping("/index")
25     public String index() {
26         return "index";
27     }
28 
29     // 访问公共模块
30     @RequestMapping("/publicModule")
31     public String publicModule() {
32         return "page_public";
33     }
34 
35     // 访问私密模块
36     @RequestMapping("/privateModule")
37     public String privateModule() {
38         return "page_leader";
39     }
40 
41     // 登录处理
42     @RequestMapping("/doLogin")
43     public String doLogin(String username, String password, Model model) {
44         // 使用Shiro编写认证处理
45         // 1、获取Subject
46         Subject subject = SecurityUtils.getSubject();
47 
48         // 2、封装用户数据
49         UsernamePasswordToken token = new UsernamePasswordToken(username, password);
50 
51         // 3、执行登录
52         try {
53             // 登录成功
54             subject.login(token);
55 
56             // 返回当前用户的帐号
57             model.addAttribute("currentuser", token.getUsername());
58 
59             return "index";
60         } catch (UnknownAccountException exception) {
61             // 返回错误信息
62             model.addAttribute("msg", "账号错误！");
63 
64             return "login";
65         } catch (IncorrectCredentialsException exception) {
66             // 返回错误信息
67             model.addAttribute("msg", "密码错误！");
68 
69             return "login";
70         }
71     }
72 
73     // 注销处理
74     @RequestMapping("/doLogout")
75     public String doLogout() {
76         // 1、获取Subject
77         Subject subject = SecurityUtils.getSubject();
78 
79         // 2、执行注销
80         try {
81             subject.logout();
82         } catch (Exception ex) {
83             ex.printStackTrace();
84         } finally {
85             return "login";
86         }
87     }
88 }

10、编写用户数据访问接口UserDao.java、角色数据访问接口RoleDao.java 和资源数据访问接口ResourceDao.java

用户数据访问接口UserDao.java

 1 package cn.temptation.dao;
 2 
 3 import cn.temptation.domain.User;
 4 import org.springframework.data.jpa.repository.JpaRepository;
 5 import org.springframework.data.jpa.repository.Query;
 6 import org.springframework.data.repository.query.Param;
 7 
 8 public interface UserDao extends JpaRepository<User, Integer> {
 9     // 根据账号查询用户
10     @Query(value = "SELECT * FROM sys_user WHERE username=:username", nativeQuery = true)
11     User findByUsername(@Param("username") String username);
12 }

角色数据访问接口RoleDao.java

1 package cn.temptation.dao;
2 
3 import cn.temptation.domain.Role;
4 import org.springframework.data.jpa.repository.JpaRepository;
5 
6 public interface RoleDao extends JpaRepository<Role, Integer> {
7 
8 }

资源数据访问接口ResourceDao.java

 1 package cn.temptation.dao;
 2 
 3 import cn.temptation.domain.Resource;
 4 import org.springframework.data.jpa.repository.JpaRepository;
 5 import org.springframework.data.jpa.repository.Query;
 6 import org.springframework.data.repository.query.Param;
 7 
 8 import java.util.List;
 9 
10 public interface ResourceDao extends JpaRepository<Resource, Integer> {
11     @Query(value = "SELECT rs.resourceurl FROM sys_role_resource AS rr " +
12             "INNER JOIN sys_resource AS rs ON rr.resourceid = rs.resourceid " +
13             "INNER JOIN sys_role AS r ON rr.roleid = r.roleid " +
14             "INNER JOIN sys_user AS u ON u.roleid = r.roleid WHERE u.userid = :userid ", nativeQuery = true)
15     List<String> findByUserid(@Param("userid") Integer userid);
16 }

11、项目结构

12、运行效果

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原文地址：https://www.cnblogs.com/iflytek/p/9847809.html