为什么下面的程序会出现这种错误?HTTP Status 404 - D:null (系统找不到指定的文件。)--------------------------------------------------------------------------------type Status reportmessage D:null (系统找不到指定的文件。)description The requested resource (D:null (系统找不到指定的文件。)) is not available.
--------------------------------------------------------------------------------Apache Tomcat/5.5.9
这是我的两个JSP页面toupiao1.jsp和toupiao2.jsp
toupiao1.jsp页面
<%@page contentType="text/html;charset=GBK" %>
<%@page import="java.util.*" %>
<%@page import="java.lang.*" %>
<%@page import="java.io.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>在线投票</title>
</head><body bgcolor="#ffffff">
<center>
<table width="300" border="1" cellspacing="0" cellpadding="0">
<tr>
<td>投票题目:你认为JSP容易学么?</td>
</tr>
<form name="toupiao" method="post" action="toupiao2.jsp">
<tr>
<td>
<input type="radio" name="toup" value="one" checked="checked"/>较难<br>
<input type="radio" name="toup" value="two">一般<br>
<input type="radio" name="toup" value="three">容易<br>
<input type="submit" name="submit" value="提交">
</td></tr>
<tr>
<td>
<%
//投票的结果放在酵目录的一个文本文件中,先打到这个文件,并且判断其是否存在,如果不存在,则创建一个文本文件
//一般情况下,应该在里面加上判断异常的语句。由于已经创建了EE.txt文件,所以在这里就不用了。
String resultsDir="D:";
FileInputStream tfile=new FileInputStream(resultsDir+System.getProperty("file.separator"+"EE.txt"));
//在EE.txt中,投票结果是存为"Number1:Number2:Number3"的,因此,在处理程序中,首先要读取原来的结果,
//分别为Number1、Number2、Number3,最后再关闭文件EE.txt
String str="";
int c;
while((c=tfile.read())!=-1){
str=str+(char)c;
}
int first=str.indexOf(":");
int last=str.lastIndexOf(":");
int lenth=str.length(); String First=str.substring(0,first);
String Next=str.substring(first+1,last);
String Last=str.substring(last+1,lenth); tfile.close();
//新旧结果相加和显示
Long a1=new Long(first);
Long a2=new Long(Next);
Long a3=new Long(Last); long b1=a1.longValue();
long b2=a2.longValue();
long b3=a3.longValue(); long total=b1+b2+b3; float h0=100*((float)b1/(float)total);
float h1=100*((float)b2/(float)total);
float h2=100*((float)b3/(float)total); out.println("Select1<img src=reg.gif width="+h0+"height=15"+b1+"><br>");
out.println("Select2<img src=reg.gif width="+h1+"height=15"+b2+"><br>");
out.println("Select3<img src=reg.gif width="+h2+"height=15"+b3+"><br>");
out.println("Total:"+total);
%>
</td>
</tr>
</form>
</table>
</center>
</body>
</html>
toupiao2.jsp页面
<%@ page contentType="text/html; charset=GBK" %>
<%@page import="java.util.*" %>
<%@page import="java.lang.*" %>
<%@page import="java.io.*" %>
<%
String action=request.getParameter("action");
String toup=request.getParameter("toupiao");
String mydata="";
if(action.compareTo("toupiao")==0){
String resultsDir="D:";
FileWriter resultsFile=new FileWriter(resultsDir+System.getProperty("file.separator")+"EE.txt",true);
File myfile=new File(resultsDir+System.getProperty("file.separator")+"EE.txt");//?
if(!(myfile.exists())){
PrintWriter toFile=new PrintWriter(resultsFile);
if(toup.compareTo("one")==0) mydata="1:0:0";//哪来的mydata
if(toup.compareTo("two")==0) mydata="0:1:0";
if(toup.compareTo("three")==0) mydata="0:0:1";
toFile.println(mydata);
resultsFile.close();
out.println(mydata);
}else{
FileInputStream tfile=new FileInputStream(resultsDir+System.getProperty("file.separator")+"EE.txt");
String str="";
int c;
while((c=tfile.read())!=-1){
str=str+(char)c;
}
int first=str.indexOf(":");
int last=str.indexOf(":");
int lenth=str.length();
String First =str.substring(0,first);
String Next=str.substring(first+1,last);
String Last=str.substring(last+1,lenth);
tfile.close();
Long a1=new Long(First);
Long a2=new Long(Next);
Long a3=new Long(Last);
long b1=a1.longValue();
long b2=a2.longValue();
long b3=a3.longValue();
if(toup.compareTo("one")==0) b1=b1+1;
if(toup.compareTo("two")==0) b2=b2+1;
if(toup.compareTo("three")==0) b3=b3+1;
Long c1=new Long(b1);
Long c2=new Long(b2);
Long c3=new Long(b3);
String d1=c1.toString();
String d2=c2.toString();
String d3=c3.toString();
str=d1+":"+d2+":"+d3;
RandomAccessFile savefile=new RandomAccessFile(resultsDir+System.getProperty("file.separator")+"EE.txt","rw");
savefile.writeBytes(str);
savefile.close();
}
%>
<SCRIPT language="JavaScript" type="">
alert("Thank you!");
self.location="toupiao1.jsp";
</SCRIPT>
<%
}
%>
--------------------------------------------------------------------------------Apache Tomcat/5.5.9
这是我的两个JSP页面toupiao1.jsp和toupiao2.jsp
toupiao1.jsp页面
<%@page contentType="text/html;charset=GBK" %>
<%@page import="java.util.*" %>
<%@page import="java.lang.*" %>
<%@page import="java.io.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>在线投票</title>
</head><body bgcolor="#ffffff">
<center>
<table width="300" border="1" cellspacing="0" cellpadding="0">
<tr>
<td>投票题目:你认为JSP容易学么?</td>
</tr>
<form name="toupiao" method="post" action="toupiao2.jsp">
<tr>
<td>
<input type="radio" name="toup" value="one" checked="checked"/>较难<br>
<input type="radio" name="toup" value="two">一般<br>
<input type="radio" name="toup" value="three">容易<br>
<input type="submit" name="submit" value="提交">
</td></tr>
<tr>
<td>
<%
//投票的结果放在酵目录的一个文本文件中,先打到这个文件,并且判断其是否存在,如果不存在,则创建一个文本文件
//一般情况下,应该在里面加上判断异常的语句。由于已经创建了EE.txt文件,所以在这里就不用了。
String resultsDir="D:";
FileInputStream tfile=new FileInputStream(resultsDir+System.getProperty("file.separator"+"EE.txt"));
//在EE.txt中,投票结果是存为"Number1:Number2:Number3"的,因此,在处理程序中,首先要读取原来的结果,
//分别为Number1、Number2、Number3,最后再关闭文件EE.txt
String str="";
int c;
while((c=tfile.read())!=-1){
str=str+(char)c;
}
int first=str.indexOf(":");
int last=str.lastIndexOf(":");
int lenth=str.length(); String First=str.substring(0,first);
String Next=str.substring(first+1,last);
String Last=str.substring(last+1,lenth); tfile.close();
//新旧结果相加和显示
Long a1=new Long(first);
Long a2=new Long(Next);
Long a3=new Long(Last); long b1=a1.longValue();
long b2=a2.longValue();
long b3=a3.longValue(); long total=b1+b2+b3; float h0=100*((float)b1/(float)total);
float h1=100*((float)b2/(float)total);
float h2=100*((float)b3/(float)total); out.println("Select1<img src=reg.gif width="+h0+"height=15"+b1+"><br>");
out.println("Select2<img src=reg.gif width="+h1+"height=15"+b2+"><br>");
out.println("Select3<img src=reg.gif width="+h2+"height=15"+b3+"><br>");
out.println("Total:"+total);
%>
</td>
</tr>
</form>
</table>
</center>
</body>
</html>
toupiao2.jsp页面
<%@ page contentType="text/html; charset=GBK" %>
<%@page import="java.util.*" %>
<%@page import="java.lang.*" %>
<%@page import="java.io.*" %>
<%
String action=request.getParameter("action");
String toup=request.getParameter("toupiao");
String mydata="";
if(action.compareTo("toupiao")==0){
String resultsDir="D:";
FileWriter resultsFile=new FileWriter(resultsDir+System.getProperty("file.separator")+"EE.txt",true);
File myfile=new File(resultsDir+System.getProperty("file.separator")+"EE.txt");//?
if(!(myfile.exists())){
PrintWriter toFile=new PrintWriter(resultsFile);
if(toup.compareTo("one")==0) mydata="1:0:0";//哪来的mydata
if(toup.compareTo("two")==0) mydata="0:1:0";
if(toup.compareTo("three")==0) mydata="0:0:1";
toFile.println(mydata);
resultsFile.close();
out.println(mydata);
}else{
FileInputStream tfile=new FileInputStream(resultsDir+System.getProperty("file.separator")+"EE.txt");
String str="";
int c;
while((c=tfile.read())!=-1){
str=str+(char)c;
}
int first=str.indexOf(":");
int last=str.indexOf(":");
int lenth=str.length();
String First =str.substring(0,first);
String Next=str.substring(first+1,last);
String Last=str.substring(last+1,lenth);
tfile.close();
Long a1=new Long(First);
Long a2=new Long(Next);
Long a3=new Long(Last);
long b1=a1.longValue();
long b2=a2.longValue();
long b3=a3.longValue();
if(toup.compareTo("one")==0) b1=b1+1;
if(toup.compareTo("two")==0) b2=b2+1;
if(toup.compareTo("three")==0) b3=b3+1;
Long c1=new Long(b1);
Long c2=new Long(b2);
Long c3=new Long(b3);
String d1=c1.toString();
String d2=c2.toString();
String d3=c3.toString();
str=d1+":"+d2+":"+d3;
RandomAccessFile savefile=new RandomAccessFile(resultsDir+System.getProperty("file.separator")+"EE.txt","rw");
savefile.writeBytes(str);
savefile.close();
}
%>
<SCRIPT language="JavaScript" type="">
alert("Thank you!");
self.location="toupiao1.jsp";
</SCRIPT>
<%
}
%>
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http://topic.csdn.net/t/20011219/11/429996.html
FileInputStream tfile=new FileInputStream(resultsDir+System.getProperty("file.separator"+"EE.txt"));D:\试试
FileInputStream tfile=new FileInputStream(resultsDir+System.getProperty("file.separator")+"EE.txt");或者干脆
FileInputStream tfile=new FileInputStream(resultsDir+"\EE.txt"); // 是反斜杠或正斜杠自己试验下
FileInputStream(resultsDir+System.getProperty("file.separator")+"EE.txt");
括号位置错了