通过request获取服务器相对路径及绝对路径

一.

String scheme = request.getScheme();//http

String serverName = request.getServerName();//localhost

int port = request.getServerPort();//8080

String context = request.getContextPath();// /demo(项目名称);

String path = scheme+"://"+serverName+":"+port+context+"/"  // http://localhost:8080/demo/

二.

获取上传文件保存服务器的路径

String filePath = request.getSession().getServletContext().getRealPath("uploadFiles/pictures");

C:\Program Files (x86)\apache-tomcat-7.0\uploadFiles\pictures