• 配置类

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

  @Bean
  @Override
  public AuthenticationManager authenticationManagerBean() throws Exception {return super.authenticationManagerBean();
  }// 由于过滤器 比 servelt 先加载 在这里注入一下 负责  TokenAuthenticationTokenFilter 中redisuntity 
  @Bean
  public TokenAuthenticationTokenFilter getTokenFiter(){return new TokenAuthenticationTokenFilter();
  }
  @Override
  protected void configure(HttpSecurity http) throws Exception {//http.addFilterBefore(new VerCodeFi    lter("/Login/Login"), UsernamePasswordAuthenticationFilter.class);http.addFilterBefore(getTokenFiter(), UsernamePasswordAuthenticationFilter.class);http.authorizeRequests().antMatchers("/Login/**").permitAll() // 放行Login.anyRequest().authenticated() // 所有请求都需要验证.and().formLogin() // 使用默认的登录页面.and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and().csrf().disable();// post请求要关闭csrf验证,不然访问报错；实际开发中开启，需要前端配合传递其他参数
  }
  

  }

• 定义token 验证过滤器

  public class TokenAuthenticationTokenFilter extends OncePerRequestFilter {

  @Autowired
  private RedisUtils redisUtils;public TokenAuthenticationTokenFilter(){
  }@Override
  protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {//1、获取请求头携带的tokenString token = request.getHeader("token");if(!StringUtils.hasText(token)){//不需要token的路由可以直接放行filterChain.doFilter(request,response);return;}Object o =redisUtils.get(token);if (o==null){response.setStatus(200);response.setCharacterEncoding("utf-8");response.getWriter().write(JSON.toJSONString(Result.failed(401,"token 非法","")));return;}Map<String,String> maps=new HashMap<>();Map Values = JSON.parseObject(o.toString(), maps.getClass());Collection<GrantedAuthority> authorities = new ArrayList<>();authorities.add(new SimpleGrantedAuthority(Values.get("role").toString()));UsernamePasswordAuthenticationToken authenticationToken=new UsernamePasswordAuthenticationToken(new Userdto(), null, authorities);SecurityContextHolder.getContext().setAuthentication(authenticationToken);filterChain.doFilter(request,response); //放行
  }
  

  }