前言
即访问控制，控制设能访问哪些资源。主体进行身份认证后需要分配权限方可访问系统的资源，对于某资源没有权限是无法访问的
一、导入坐标
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.zsh</groupId>
<artifactId>springsecurity</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springsecurity</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>2.3.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.4</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
二、Users实体类及其数据库表的创建
@Data
public class Users {
private int id;
private String username;
private String password;
}
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/springsecurity?serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=admin
三、controller，service，mapper层的实现
package com.zsh.security.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author:抱着鱼睡觉的喵喵
* @date:2021/3/12
* @description:
*/
@RestController
@RequestMapping("/test")
public class SecurityController {
@RequestMapping("/hello")
public String hello() {
return "hello! Spring Security!";
}
@RequestMapping("/index")
public String index() {
return "hello index!";
}
}
package com.zsh.security.service;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.zsh.security.mapper.UserMapper;
import com.zsh.security.pojo.Users;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* @author:抱着鱼睡觉的喵喵
* @date:2021/3/12
* @description:
*/
@Service("userDetailsService")
public class UserDetailServiceImpl implements UserDetailsService {
@Autowired
private UserMapper userMapper;
@Override
public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
QueryWrapper<Users> wrapper = new QueryWrapper<>();
wrapper.eq("username", s);
Users users = userMapper.selectOne(wrapper);
if (users == null) {//
throw new UsernameNotFoundException("账号或密码错误!");
} else {//表示有user角色权限
List<GrantedAuthority> auths = AuthorityUtils.commaSeparatedStringToAuthorityList("ROLE_user");
return new User(users.getUsername(), new BCryptPasswordEncoder().encode(users.getPassword()), auths);
}
}
}
package com.zsh.security.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.zsh.security.pojo.Users;
import org.springframework.stereotype.Repository;
/**
* @author:抱着鱼睡觉的喵喵
* @date:2021/3/12
* @description:
*/
@Repository
public interface UserMapper extends BaseMapper<Users> {
}
四、核心–编写配置文件
package com.zsh.security.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
/**
* @author:抱着鱼睡觉的喵喵
* @date:2021/3/12
* @description:
*/
@Configuration
public class SecurityConfig2 extends WebSecurityConfigurerAdapter {
@Autowired
private UserDetailsService userDetailsService;
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
}
@Override
protected void configure(HttpSecurity http) throws Exception {
//没有权限时跳转到403界面（无权限界面）
http.exceptionHandling().accessDeniedPage("/noauth.html");
http.formLogin()
.loginPage("/login.html") //设置登录界面
.loginProcessingUrl("/user/login") //登录界面url
.defaultSuccessUrl("/test/index").permitAll() //默认登录成功界面
.and().authorizeRequests() //哪些资源可以直接访问
.antMatchers("/","/test/hello","/user/loin").permitAll() //不做处理
//.antMatchers("/test/index").hasAuthority("admin")
// .antMatchers("/test/index").hasAnyAuthority("admin","manager")
//.antMatchers("/test/index").hasRole("admin")
.antMatchers("/test/index").hasAnyRole("admin","user")
.anyRequest().authenticated() //所有请求都可以访问
.and().csrf().disable(); //关闭CSRF
}
@Bean
PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
}
分析核心的四个方法（其中给予某个角色权限在service层实现）
1、hasAuthority:是否有某个权限
2、hasAnyAuthority：是否拥有其中一个权限
3、hasRole：是否拥有某个角色
4、hasAnyRole:是否拥有其中一个角色
关于hasAuthority、hasAnyAuthority与hasRole、hasAnyRole的区别:
本质上没有什么区别，只不过是设计的维度不同（角色是权限的集合）
根据底层可以得出，如果要使用hasRole和hasAnyRole必须在service层加上ROLE_的前缀
五、无权限界面和登录界面的实现
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/user/login" method="post">
username:<input type="text" name="username"> <br>
password:<input type="password" name="password"><br>
<input type="submit" value="提交">
</form>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<a style="background-color: red; margin-top: 100px; margin-left: 100px">no auth</a>
</body>
</html>
