mchtnwn的专栏

1、 首先用户发送请求http://localhost:9080/springmvc-chapter2/hello——>web容器，web容器根据“/hello”路径映射到DispatcherServlet（url-pattern为/）进行处理；2、 DispatcherServlet——>BeanNameUrlHandlerMapping进行请求到处理的映射，BeanNameUrlHandl

1.加入jar包commons-fileupload-1.2.1.jarcommons-io-2.0.jar2.springmvc.xml中配置bean<bean id="nultipartResolver" class="org.springframework.web.multipart.commons.commonsMultipartResolver"> <property

public class FirstInterceptor implements HandlerInterceptor{ /** * 调用方法之前调用 */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse respon