基于 Spring Security 的前后端分离的权限控制系统

话不多说，入正题。一个简单的权限控制系统需要考虑的问题如下：

1. 权限如何加载
2. 权限匹配规则
3. 登录

1.  引入maven依赖

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 4     <modelVersion>4.0.0</modelVersion>
 5     <parent>
 6         <groupId>org.springframework.boot</groupId>
 7         <artifactId>spring-boot-starter-parent</artifactId>
 8         <version>2.5.1</version>
 9         <relativePath/> <!-- lookup parent from repository -->
10     </parent>
11     <groupId>com.example</groupId>
12     <artifactId>demo5</artifactId>
13     <version>0.0.1-SNAPSHOT</version>
14     <name>demo5</name>
15 
16     <properties>
17         <java.version>1.8</java.version>
18     </properties>
19 
20     <dependencies>
21         <dependency>
22             <groupId>org.springframework.boot</groupId>
23             <artifactId>spring-boot-starter-data-jpa</artifactId>
24         </dependency>
25         <dependency>
26             <groupId>org.springframework.boot</groupId>
27             <artifactId>spring-boot-starter-data-redis</artifactId>
28         </dependency>
29         <dependency>
30             <groupId>org.springframework.boot</groupId>
31             <artifactId>spring-boot-starter-security</artifactId>
32         </dependency>
33         <dependency>
34             <groupId>org.springframework.boot</groupId>
35             <artifactId>spring-boot-starter-web</artifactId>
36         </dependency>
37 
38         <dependency>
39             <groupId>io.jsonwebtoken</groupId>
40             <artifactId>jjwt</artifactId>
41             <version>0.9.1</version>
42         </dependency>
43 
44         <dependency>
45             <groupId>com.alibaba</groupId>
46             <artifactId>fastjson</artifactId>
47             <version>1.2.76</version>
48         </dependency>
49         <dependency>
50             <groupId>org.apache.commons</groupId>
51             <artifactId>commons-lang3</artifactId>
52             <version>3.12.0</version>
53         </dependency>
54         <dependency>
55             <groupId>commons-codec</groupId>
56             <artifactId>commons-codec</artifactId>
57             <version>1.15</version>
58         </dependency>
59 
60         <dependency>
61             <groupId>mysql</groupId>
62             <artifactId>mysql-connector-java</artifactId>
63             <scope>runtime</scope>
64         </dependency>
65         <dependency>
66             <groupId>org.projectlombok</groupId>
67             <artifactId>lombok</artifactId>
68             <optional>true</optional>
69         </dependency>
70     </dependencies>
71 
72     <build>
73         <plugins>
74             <plugin>
75                 <groupId>org.springframework.boot</groupId>
76                 <artifactId>spring-boot-maven-plugin</artifactId>
77                 <configuration>
78                     <excludes>
79                         <exclude>
80                             <groupId>org.projectlombok</groupId>
81                             <artifactId>lombok</artifactId>
82                         </exclude>
83                     </excludes>
84                 </configuration>
85             </plugin>
86         </plugins>
87     </build>
88 
89 </project>