SpringSecurity 实现token 认证

• 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token
  
      String 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
  }
  

  }