SpringBoot 登陆拦截器

青旅半醒 2021-12-12 10:25 268阅读 0赞

两个类

@Controller
    @Component
    
    public class LoginInterceptor extends HandlerInterceptorAdapter {
    
        private static final Log log = LogFactory.getLog(LoginInterceptor.class);
    
        @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    
            Object userInfo = request.getSession().getAttribute("USER");
            //没有用户信息，直接跳转到登录页面
            if(userInfo==null){
    
                log.info("尚未登录，跳转到登录界面");
                response.sendRedirect(request.getContextPath()+"login.html");
                return false;
            }
    
            return true;
        }
    
    
    }

@Configuration
    public class WebMvcConfig implements WebMvcConfigurer {
    
    
        @Autowired
        LoginInterceptor loginInterceptor;
    
        final String[] notLoginInterceptPaths = {"/js/*" ,"/css/*","/img/*","/font/*","/home/*","/login.html"};
    
        @Override
        public void addInterceptors(InterceptorRegistry registry) {
            registry.addInterceptor(loginInterceptor).addPathPatterns("/**").excludePathPatterns(notLoginInterceptPaths);
    
        }
    
        @Override
        public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
            configurer.enable();
        }
    
    
    }

WebMvcConfig 类中，我们对特定路径文件不进行登录拦截 ，具体文件路径可看下文.

外置web 文件到jar 包之外.

mvc:
        view:
          prefix: /
          suffix: .html
    
     # 静态文件外置
      resources:
         static-locations: file:///ngddos/deploy

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