MyEclipse------File类的各种方法

usingFile.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>
<%@page import="java.io.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'usingFile.jsp' starting page</title>
</head>

<body>
    <!-- String thePath=request.getRealPath("");作用：获取取得你当前运行文件在服务器上的绝对路径 -->
    <%
        //path=request.getRealPath("");
        //out.println(path);
        //String pathe=request.getRealPath("/");
        //out.print(pathe);
     %>
     <br>
    <%
        String thePath=request.getRealPath("")+"\\file";
        out.print(thePath+"<br>");
        File dir=new File(thePath);
        File myFile=new File(thePath,"usingFile.jsp");
        File notExitFile=new File(thePath,"file.txt");
        out.print("目录"+thePath+"是否存在:  "+dir.exists()+"<br><br>");
        out.print("文件"+thePath+"\\usingFile.jsp是否存在:  "+myFile.exists()+"<br><br>");
        out.print("文件"+thePath+"\\file.txt是否存在:  "+notExitFile.exists()+"<br><br>");
        out.print("文件"+thePath+"\\usingFile.jsp是否可读:  "+myFile.canRead()+"<br><br>");
        out.print("文件"+thePath+"\\usingFile.jsp是否可写:  "+myFile.canWrite()+"<br>");
     %>
</body>
</html>

 

posted @ 2016-03-27 10:54  玉天恒  阅读(478)  评论(0)  编辑  收藏  举报