Spring Boot 对请求的映射

 //通过这种方式可以来映射页面请求路径
    @PostMapping("/hello")
    public String hello(){
        
        return "login";//如果使用thymeleaf引擎，会去classpath:/public找对应的html
    }

  @Override
    public void addViewControllers(ViewControllerRegistry registry) {

        // super.addViewControllers(registry);
        //浏览器请求 首页，将跳转到 thymeleaf下的login页面。
        registry.addViewController("/index.html").setViewName("login");
        registry.addViewController("/").setViewName("login");
        registry.addViewController("/main.html").setViewName("dashboard");
    }

    /**
     * 通过另一种方式来配置虚拟路径
     * @return adapter
     */
    //所有的WebMvcConfigurerAdapter组件都会一起起作用
    @Bean //添加到Spring容器中
   public WebMvcConfigurerAdapter MyWebMvcConfigurerAdapter(){

        //内部类
        WebMvcConfigurerAdapter adapter = new WebMvcConfigurerAdapter() {
            @Override
            public void addViewControllers(ViewControllerRegistry registry) {
                registry.addViewController("/").setViewName("login");
                registry.addViewController("/index.html").setViewName("login");
            }

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

        };
        return adapter;

}