我做了一个javaBean计数器，jsp调用如下：
<jsp:useBean id= "counter " scope= "request " class= "com.jsq.Counter ">
</jsp:useBean>
<%
//调用counter对象的readfile方法来读取文件lyfcount.txt中的计数
String cont=counter.ReadFile( "count.txt ");
//调用counter对象的readfile方法来将计数器加一后写入到文件lyfcount.txt中
counter.WriteFile( "count.txt ",cont);
%>
不管我用相对路径还是绝对路径都不对，先后用了/count.txt，./count.txt等，并且在每一级目录下都放了count.txt文件，都报错：
type Status report
message lyfcount.txt (系统找不到指定的文件。)
description The requested resource (lyfcount.txt (系统找不到指定的文件。)) is not available.
---------javaBean文件------
package com.jsq;
import java.io.*;
public class Counter extends Object {
private String currentRecord = null;
private BufferedReader file;
private String path;
public Counter() {
}
public String ReadFile(String filePath) throws FileNotFoundException{
path = filePath;
file = new BufferedReader(new FileReader(path));
String returnStr =null;
try {
currentRecord = file.readLine();}
catch (IOException e)
{
System.out.println( "读取错务 "); }
if (currentRecord == null)
returnStr = "没有任何记录 ";
else{
returnStr =currentRecord; }
return returnStr;
}
public void WriteFile(String filePath,String counter) throws FileNotFoundException
{
path = filePath;
int Writestr = Integer.parseInt(counter)+1;
try {
PrintWriter pw = new PrintWriter(new FileOutputStream(filePath));
pw.println(Writestr);
pw.close();
}catch(IOException e) {
System.out.println( "错误 "+e.getMessage()); }
}
}
------解决方案--------------------
使用绝对路径如:C:\\eclipse\\workspace\\itemExamination\\WebRoot\\count.txt
------解决方案--------------------
发了我的qq给你