实现上传 将upload目录拷贝到JSP服务器上相应的目录。 例如： 将upload目录拷贝到tomcat服务器的webapps目录下，重启服务后即可浏览本实例。-From the realization of the upload directory to the JSP server, copy the corresponding directory. For example: upload directory will be copied to the tomcat serve