Spring Security实现用户权限限制

Spring Security官网:https://spring.io/projects/spring-security#learn.

Spring Security 是一个功能强大且高度可定制的身份验证和访问控制框架。它是保护基于 Spring 的应用程序的事实上的标准。

Spring Security 是一个专注于为 Java 应用程序提供身份验证和授权的框架。与所有 Spring 项目一样，Spring Security 的真正强大之处在于它可以轻松扩展以满足自定义要求。

准备一个数据库

准备application.properties

#关闭缓存
spring.thymeleaf.cache=false

server.port=8081

#数据库配置
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/security?characterEncoding=UTF-8&useSSL=false
spring.datasource.username=root
spring.datasource.password=123456

准备pom.xml文件

    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.0.9.RELEASE
         
    
    com.cao
    springsecurity
    0.0.1-SNAPSHOT
    springsecurity
    Demo project for Spring Boot

    
        1.8
    

    
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.1.3
        
        
        
            mysql
            mysql-connector-java
            5.1.47
        
        
            org.projectlombok
            lombok
        
        
            org.springframework.boot
            spring-boot-starter-web
        

        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
        
            org.springframework.boot
            spring-boot-starter-thymeleaf
        
        
        
            org.springframework.boot
            spring-boot-starter-security
        
        
        
            org.thymeleaf.extras
            thymeleaf-extras-springsecurity5
            3.0.4.RELEASE
        

    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        

            
                
                    src/main/java
                    
                        **
	UserDetails loadUserByUsername(String username) throws UsernameNotFoundException;
}

AuthorityUtils工具类作用，可在源码中查看

	 * Creates a array of GrantedAuthority objects from a comma-separated string
	 * representation (e.g. "ROLE_A, ROLE_B, ROLE_C").
	 * 创建一个被授予权限的数组，由逗号分隔的字符串表示
	 * (例如:“ROLE_A,ROLE_B,ROLE_C”)。

Controller

package com.jsxl.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;


@Controller
public class RouterController {

    @RequestMapping({"/", "/index"})
    public String index() {
        return "index";
    }

    @RequestMapping("/toLogin")
    public String toLogin() {
        return "views/login";
    }

    @RequestMapping("/level1/{id}")
    public String level1(@PathVariable("id") int id) {
        return "views/level1/" + id;
    }

    @RequestMapping("/level2/{id}")
    public String level2(@PathVariable("id") int id) {
        return "views/level2/" + id;
    }

    @RequestMapping("/level3/{id}")
    public String level3(@PathVariable("id") int id) {
        return "views/level3/" + id;
    }
}

SecurityConfig

package com.jsxl.config;

import org.springframework.beans.factory.annotation.Autowired;
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.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;


@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        //首页所有人可以访问，功能页有相应权限才能访问
        //链式编程
        //请求授权的规则
        http.authorizeRequests()
                .antMatchers("/","/toLogin").permitAll()
                .antMatchers("/level1
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		this.disableLocalConfigureAuthenticationBldr = true;
	}

spring boot启动类

package com.jsxl;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan("com.jsxl.mapper")
public class SpringsecurityApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringsecurityApplication.class, args);
    }
}

测试结果

git代码下载:https://gitee.com/jsxlliar/spring_security.git.