SpringBoot 登录

模板引擎页面刷新实时生效

1. 禁用缓存
   spring.thymeleaf.cache=false

2. IDEA Ctrl+ F9 重新编译

• LoginController

@Controller
public class LoginController {

    @PostMapping(value = "/user/login")
//    @RequestMapping(value = "/user/login", method = RequestMethod.POST)
    public String Login(@RequestParam("username") String username,
                        @RequestParam("password") String password,
                        Map<String,Object> map,
                        HttpSession httpSession){
        if(!StringUtils.isEmpty(username) && password.equals("123456"))
        {
            //防止重复提交表单，重定向到主页
            httpSession.setAttribute("loginUser",username);
            return "redirect:/main.html";
        }else{
            map.put("msg","用户名密码错误");
            return "login";
        }
    }
}

• 拦截器

/*
 *登陆检查
 */
public class LoginHandlerInterceptor implements HandlerInterceptor{
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object user = request.getSession().getAttribute("loginUser");
        if(user == null){
            //未登陆，，返回登录页面
            request.setAttribute("msg","没有权限请先登陆");
            request.getRequestDispatcher("/index.html").forward(request,response);
            return false;
        }else{
            //已登陆
            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 {

    }
}

• 在config中注册拦截器

@Configuration
public class MyMvcConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
//        super.addViewControllers(registry);
        registry.addViewController("/panwang").setViewName("success");
    }

    //注册拦截器
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        //super.addInterceptors(registry);
        registry.addInterceptor(new LoginHandlerInterceptor()).addPathPatterns("/**")
                .excludePathPatterns("/index.html","/","/user/login");
    }

    @Bean
    public WebMvcConfigurerAdapter webMvcAutoConfigurationAdapter(){
        WebMvcConfigurerAdapter adpter = new WebMvcConfigurerAdapter(){
            @Override
            public void addViewControllers(ViewControllerRegistry registry){
                registry.addViewController("/").setViewName("login");
                registry.addViewController("/index.html").setViewName("login");
                registry.addViewController("/main.html").setViewName("dashboard");
            }
        };


        return adpter;
    }

    @Bean
    public LocaleResolver localeResolver(){
        return new MyLocaleResolver();
    }
}

模板文件