通過request獲取服務器相對路徑及絕對路徑

一.

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

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

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

String context = request.getContextPath();// /demo(項目名稱);

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

二.

獲取上傳文件保存服務器的路徑

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

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