静态资源映射
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静态资源需要直接访问时,可以通过在配置文件中重写addResourceHandlers方法来实现
package com.zhl.practice.config; import com.zhl.practice.MyInteceptor.DemoInterceptor; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.EnableWebMvc; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; import org.springframework.web.servlet.view.InternalResourceViewResolver; import org.springframework.web.servlet.view.JstlView; /** * @author Holley * @Description 如果访问的静态文件不是以下路径则会被拦截 * @create 2018-09-28 11:05 **/ @Configuration @EnableWebMvc public class MvcConfig extends WebMvcConfigurerAdapter { /** * @Author holley * @Description 设置MVC的视图解析 * @Date 2018/9/28 11:29 * @Param [] * @return org.springframework.web.servlet.view.InternalResourceViewResolver */ @Bean public InternalResourceViewResolver viewResolver(){ InternalResourceViewResolver viewResolver = new InternalResourceViewResolver(); viewResolver.setPrefix("/WEB-INF/classes/views"); viewResolver.setSuffix(".jsp"); viewResolver.setViewClass(JstlView.class); return viewResolver; } /** * @Author holley * @Description 设置静态资源文件的映射 * @Date 2018/9/28 11:34 * @Param [registry] * @return void */ @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { // addResourceHandler 设置对外暴露的访问路径 ,addResourceLocations 设置的是文件放置的目录 registry.addResourceHandler("/test/**") .addResourceLocations("classpath:/tset/"); } /** * @Author holley * @Description java配置bean * @Date 2018/9/28 11:49 * @Param [] * @return com.zhl.practice.MyInteceptor.DemoInterceptor */ @Bean public DemoInterceptor demoInterceptor(){ return new DemoInterceptor(); } /** * @Author holley * @Description 设置拦截器(调用自定义拦截器) * @Date 2018/9/28 11:35 * @Param [registry] * @return void */ @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(demoInterceptor()); } }
自定义拦截器
package com.zhl.practice.MyInteceptor; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * @author Holley * @Description 自定义MVC拦截器 * @create 2018-09-28 11:38 **/ public class DemoInterceptor extends HandlerInterceptorAdapter{ /** * @Author holley * @Description 重写前置拦截 * @Date 2018/9/28 11:40 * @Param [request, response, handler] * @return boolean */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { long startTime = System.currentTimeMillis(); request.setAttribute("startTime",startTime); return true; } /** * @Author holley * @Description 重写后置拦截 * @Date 2018/9/28 11:40 * @Param [request, response, handler] * @return boolean */ @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { long startTime = (Long)request.getAttribute("startTime"); request.removeAttribute("startTime"); long endTime = System.currentTimeMillis(); System.out.println("本次请求处理时间为:"+(endTime - startTime) + "ms"); } }
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