在JSP中读文件和写文件的方法
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<%@ 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>
<% buffer="new" f="new" filename="request.getRealPath("lionsky.txt");" fr="new" int="" ioexception="" java.io.file="" java.io.filereader="" length="fr.read(buffer))!=-1)" new="" printwriter="" pw="new" str="WWW.LIONSKY.NET" string="" try="">
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<% buffer="new" f="new" filename="request.getRealPath("lionsky.txt");" fr="new" int="" ioexception="" java.io.file="" java.io.filereader="" length="fr.read(buffer))!=-1)" new="" printwriter="" pw="new" str="WWW.LIONSKY.NET" string="" try="">
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