MVC自定义配置

学习资料

视频：【尚硅谷】SpringBoot2零基础入门教程

文档：SpringBoot2核心技术与响应式编程

源码：SpringBoot2核心技术与响应式编程

MVC自定义配置

实现WebMvcConfigurer接口，并重写相关方法

自定义拦截器（登录拦截为例）

// 1、先定义一个拦截器，实现HandlerInterceptor接口并实现里面的三个方法
public class LoginInterceptor implements HandlerInterceptor {
    

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    
        return Objects.nonNull(request.getAttribute("loginUser"));
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
    
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
    
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}

// 2、实现WebMvcConfigurer接口对web进行自定义配置，重写addInterceptors方法添加自定义拦截器
@Configuration
public class AdminWebConfig implements WebMvcConfigurer {
    

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
    
        registry.addInterceptor(new LoginInterceptor())
                .addPathPatterns("/**")
                .excludePathPatterns("/", "/login");
    }
}