springboot login interception
1. Configure the interceptor
@Component
public class LoginHandlerInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
Object user = request.getSession().getAttribute(CommonConstants.USER_ATTRIBUTE);
if (user == null) {
request.setAttribute("msg", "请先登录");
request.getRequestDispatcher("/login.ftl").forward(request, response);
return false;
}
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
}
2. Configure blocking rules
@Configuration
public class MyWebMvcConfigurer implements WebMvcConfigurer {
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/login.ftl").setViewName("login");
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LoginHandlerInterceptor())
.addPathPatterns("/**")
.excludePathPatterns("/demo/pa*", "/login/*", "/login/auth*", "/login.ftl",
"/demo/getUserList*.json")
.excludePathPatterns("/static/**");
}
}