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SpringSecurity Redis认证

ME_._ME 人气:0

由于今天用Security进行权限管理的时候出现了一些Bug,特此发这篇博客来补习一下对SpringSecurity的理解

前言引入

当今市面上用于权限管理的流行的技术栈组合是

这种搭配自然有其搭配的特点,由于SpringBoot的自动注入配置原理,在创建项目时就自动注入管理SpringSecurity的过滤器容器(DelegatingFilterProxy),而这个过滤器是整个SpringSercurity的核心。掌握着SpringSercurity整个权限认证过程,而SpringBoot很香的帮你将其自动注入了,而用ssm
去整合Security,将会耗用大量的配置文件,不易于开发,而Security的微服务权限方案,更是能和Cloud完美融合,于是Security比Shrio更强大,功能更齐全。

Security的核心配置文件

核心:Class SecurityConfig extends WebSecurityConfigurerAdapter

继承了WebSecurityConfigurerAdapter后我们关注于configure方法对于在整个安全认证的过程进行相关的配置,当然在配置之前我们先简单了解一下流程

简单的看了整个权限认证的流程,很轻易的总结得出,SpringSecurity核心的就是以下几种配置项了

那我们就首先通过配置来完成认证过程吧!!!!

Security的认证过程

假设我们要实现一下的认证功能

1. 是登录请求

关于密码校验的流程:
UsernamePasswordAuthenticationFilter的密码校验规则是基于AuthenticationManagerBuilder(认证管理器)下的 UserDetailsService里的规则进行验证的:
其中的核心方法:

1.public UserDetails *loadUserByUsername(String username)
通过请求参数的用户名去数据库查询是否存在,存在则将其封装在UserDetails里面,而验证过程是通过AuthenticationManagerBuilder获取到UserDetail里的username和password来校验的,
这样我们就可以通过

(UserDetailsService中的方法,注意需要将UserDetailsService注入AuthenticationManagerBuilder中)

	@Override
	public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
		SysUser sysUser = sysUserService.getByUsername(username);
		if (sysUser == null) {
			throw new UsernameNotFoundException("用户名或密码不正确");
		}
		// 注意匹配参数,前者是明文后者是暗纹
		System.out.println("是否正确"+bCryptPasswordEncoder.matches("111111",sysUser.getPassword()));
		return new AccountUser(sysUser.getId(), sysUser.getUsername(), sysUser.getPassword(), getUserAuthority(sysUser.getId()));
	}

通过了这个验证后,过滤器放行,不通过就用自定义或者默认的处理器处理

核心配置文件:

package com.markerhub.config;

import com.markerhub.security.*;
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.method.configuration.EnableGlobalMethodSecurity;
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.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

	@Autowired
	LoginFailureHandler loginFailureHandler;

	@Autowired
	LoginSuccessHandler loginSuccessHandler;

	@Autowired
	CaptchaFilter captchaFilter;

	@Autowired
	JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;

	@Autowired
	JwtAccessDeniedHandler jwtAccessDeniedHandler;

	@Autowired
	UserDetailServiceImpl userDetailService;

	@Autowired
	JwtLogoutSuccessHandler jwtLogoutSuccessHandler;

	@Bean
	JwtAuthenticationFilter jwtAuthenticationFilter() throws Exception {
		JwtAuthenticationFilter jwtAuthenticationFilter = new JwtAuthenticationFilter(authenticationManager());
		return jwtAuthenticationFilter;
	}

	@Bean
	BCryptPasswordEncoder bCryptPasswordEncoder() {
		return new BCryptPasswordEncoder();
	}

	private static final String[] URL_WHITELIST = {

			"/login",
			"/logout",
			"/captcha",
			"/favicon.ico",

	};


	protected void configure(HttpSecurity http) throws Exception {

		http.cors().and().csrf().disable()

				// 登录配置
				.formLogin()
				.successHandler(loginSuccessHandler)
				.failureHandler(loginFailureHandler)

				.and()
				.logout()
				.logoutSuccessHandler(jwtLogoutSuccessHandler)

				// 禁用session
				.and()
				.sessionManagement()
				.sessionCreationPolicy(SessionCreationPolicy.STATELESS)

				// 配置拦截规则
				.and()
				.authorizeRequests()
				.antMatchers(URL_WHITELIST).permitAll()
				.anyRequest().authenticated()

				// 异常处理器
				.and()
				.exceptionHandling()
				.authenticationEntryPoint(jwtAuthenticationEntryPoint)
				.accessDeniedHandler(jwtAccessDeniedHandler)

				// 配置自定义的过滤器
				.and()
				.addFilter(jwtAuthenticationFilter())
				.addFilterBefore(captchaFilter, UsernamePasswordAuthenticationFilter.class)

		;

	}

	@Override
	protected void configure(AuthenticationManagerBuilder auth) throws Exception {
		auth.userDetailsService(userDetailService);
	}
}

2. 不是登录请求

使用Redis整合时的注意事项

本质上还是编写过滤器链:

// 校验验证码逻辑
	private void validate(HttpServletRequest httpServletRequest) {

		String code = httpServletRequest.getParameter("code");
		String key = httpServletRequest.getParameter("token");

		if (StringUtils.isBlank(code) || StringUtils.isBlank(key)) {
			System.out.println("验证码校验失败2");
			throw new CaptchaException("验证码错误");
		}

		System.out.println("验证码:"+redisUtil.hget(Const.CAPTCHA_KEY, key));
		if (!code.equals(redisUtil.hget(Const.CAPTCHA_KEY, key))) {
			System.out.println("验证码校验失败3");
			throw new CaptchaException("验证码错误");
		}

		// 一次性使用
		redisUtil.hdel(Const.CAPTCHA_KEY, key);
	}

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