<%@ page import="java.io.*" %>
<html>
  <head>
    <title>Lion互动网络==》JSP中读文件和写文件的例子</title>
  </head>
  <body>
   <%
//写文件
String str = "WWW.LIONSKY
.NET";
String filename = request.getRealPath("lionsky.txt");
java.io.File f = new java.io.File(filename);
if(!f.exists())//如果文件不存,则建立
{
  f.createNewFile();
}
try
{
  PrintWriter pw = new PrintWriter(new FileOutputStream(filename));
  pw.println(str);//写内容
  pw.close();
}
catch(IOException e)
{
  out.println(e.getMessage());
}
//读文件
java.io.FileReader fr = new java.io.FileReader(f);
char[] buffer = new char[10];
int length; //读出的字符数(一个中文为一个字符)
//读文件内容
out.write(filename+"<br>");
while((length=fr.read(buffer))!=-1)
{
  //输出
  out.write(buffer,0,length);
}
fr.close();
%>
  </body>
</html>
<%//写文件String str = "WWW.LIONSKY.NET";String filename = request.getRealPath("lionsky.txt");java.io.File f = new java.io.File(filename);if(!f.exists())//如果文件不存,则建立{ f.createNewFile();}try{ PrintWriter pw = new PrintWriter(new FileOutputStream(filename)); pw.println(str);//写内容 pw.close();}catch(IOException e){ out.println(e.getMessage());}//读文件java.io.FileReader fr = new java.io.FileReader(f);char[] buffer = new char[10];int length; //读出的字符数(一个中文为一个字符)//读文件内容out.write(filename+"
");while((length=fr.read(buffer))!=-1){ //输出 out.write(buffer,0,length);}fr.close();%>