自定义权限校验方法、基于配置的权限控制、CSRF

@Component("ex")
public class SGEexpression {

    public boolean hasAuthority(String authority) {
        // 获取当前用户的权限
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        LoginUser loginUser = (LoginUser) authentication.getPrincipal();
        List<String> permissions = loginUser.getPermissions();
        // 判断用户权限集合中是否存在authority
        return permissions.contains(authority);
    }

}

    @RequestMapping("/hello")
    @PreAuthorize("@ex.hasAuthority('system:dept:list')")
    public String hello(){
        return "hello";
    }

　　@Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //关闭csrf
                .csrf().disable()
                //不通过Session获取SecurityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                // 对于登录接口 允许匿名访问
                .antMatchers("/user/login").anonymous()
                .antMatchers("/testCors").hasAuthority("system:dept:list")
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();

        // 把token校验过滤器添加到过滤器链中
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);

        // 配置异常处理器
        http.exceptionHandling()
                // 配置认证失败处理器
                .authenticationEntryPoint(authenticationEntryPoint)
                .accessDeniedHandler(accessDeniedHandler);

        // 允许跨域
        http.cors();
    }