jsp 取得相對與絕對路徑代碼

//在Servlet與JSP中取得當前文件所在的相對路徑與絕對路徑
 
  //JSP中

  out.println("根目錄所對應的絕對路徑:" request.getRequestURI() "<br/>");
 
  String strPathFile = application.getRealPath(request.getRequestURI());
  out.println("文件的絕對路徑:" strPathFile "<br/>");
out.println(application.getRealPath(request.getRequestURI()));
  String strDirPath = new File(application.getRealPath(request.getRequestURI())).getParent();
  out.println("目錄的絕對路徑:" strDirPath "<br/>");

  //Servlet中
  //JSP中的application對象就是Servlet中的ServerContext，所以在Servlet中是如此獲得
  //import java.io.File;

System.out.println("根目錄所對應的絕對路徑:" request.getServletPath() "<br/>");

String strPathFile = request.getSession().getServletContext().getRealPath(request.getRequestURI());
System.out.println("文件的絕對路徑:" strPathFile "<br/>");

String strDirPath = new File(request.getSession().getServletContext().getRealPath(request.getRequestURI())).getParent();
System.out.println("目錄的絕對路徑:" strDirPath "<br/>");

  文件名不能包括以下字符：/:*?"<>|

獲取Web項目的全路徑
String strDirPath = getServletContext().getRealPath("/");