Jsp 判断文件是否存在
<%@ page contentType="text/html; charset=GB2312"%><%@ page language="java" %><%@ page import="java.io.*" %><HTML><HEAD><TITLE>读写文件</TITLE></HEAD><BODY><CENTER><FONT SIZE = 5 COLOR = blue>判断是否存在</FONT></CENTER><%String filename =request.getRealPath("tmp/File.txt");File f = new File(filename);if(f.exists()){ f.delete();out.println("file exists deleteed");}else{ f.createNewFile();out.println("file not exists created");}%>
页:
[1]