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集成拦截器
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登录验证为例
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添加拦截器
public class LoginInterceptor implements HandlerInterceptor { private Logger log = LoggerFactory.getLogger(getClass()); //Controller逻辑执行之前 @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { log.info("preHandle...."); Object user = WebUtils.getHttpSession().getAttribute("user"); log.info("user:{}",user); String uri = request.getRequestURI(); log.info("uri："+ uri); if (user == null) { response.sendRedirect("/"); return false; } else { return true; } } //Controller逻辑执行完毕但是视图解析器还未进行解析之前 @Override public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception { log.info("postHandle...."); } //Controller逻辑和视图解析器执行完毕 @Override public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception { log.info("afterCompletion...."); } } -
注册，配置拦截路径和排除登录需访问路径
@Configuration public class WebMvcConfig implements WebMvcConfigurer { @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new LoginInterceptor()).addPathPatterns("/**") .excludePathPatterns("/", "/login", "/user/login","/user/login", "/images/**", "/user/getCode", "/js/**", "/page/**", "/layui/**", "/layui_ext/**", "/login.html", "/webjars/**", "/css/**"); } } -
退出登录清除session
/** * 跳转到登录 * @return */ @RequestMapping("toLogin") public String toLogin(){ WebUtils.getHttpSession().removeAttribute("user"); return "/"; }
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