friends i am stuck up at a particular place,please tell me as to how should i proceed in this case..
i am writing a code for file upload and the code is as it is given in a serlverts book by dustin callaway, the code is not working at my end....could some one please tell me a way out
i am on tomcat 3.2.1
here are the file, an html page and a servlet, the servlet has been compilied
html form
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>File Upload Example</title>
</head>
<body style="font-family: Verdana; font-size: 10pt" background="file:///D:/jakarta-tomcat-3.2.1/jakarta-tomcat-3.2.1/webapps/fileupload/BACKGROUND1.jpg">
<h4 align="center"><font color="#000080"><u>File Upload Servlet</u></font></h4>
<table border="0" width="84%" cellspacing="0" cellpadding="0">
<tr>
<td width="51%">
<form enctype="multipart/form-data" action="UploadServlet" method="post">
<p><font color="#000080">Press the <b> browse</b> button to select the file to upload and then click on the <b>Upload Button</b>
</font>
<p>
<font color="#000080">
<input type="hidden" name="directory" value="temp/" >
<input type="hidden" name="successPage" value="success.html">
<input type="hidden" name="OverWrite" value="false">
<input type="hidden" name=OverWritePage" value="overwrite.html">
</font></td>
<td width="50%">
<p align="center"><font color="#000080">
<br>
<input type="file" name="filename" value="" maxlength="255" size="50">
<br>
<br>
<input type="submit" value="Upload">
</font></p>
</td>
</tr>
</table>
</form>
</body>
</html>
servlet code
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class UploadServlet extends HttpServlet
{
static final int MAX_SIZE =102400;
String rootPath,successMessage;
public void init(ServletConfig config) throws ServletException
{
super.init(config);
rootPath = config.getInitParameter("RootPath");
if (rootPath == null)
{
rootPath="/";
}
successMessage = config.getInitParameter("SuccessMessage");
if (successMessage == null)
{
successMessage = "File Upload Complete ";
}
} // end of init() method
public void doPost(HttpServletRequest request,HttpServletResponse response)
{
ServletOutputStream out = null;
DataInputStream in = null;
FileOutputStream fileOut = null;
try
{
response.setContentType("text/plain");
out=response.getOutputStream();
} catch(IOException e)
{
System.out.println("Error getting the output stream");
System.out.println("Error description:"+e);
}
try
{
String contentType = request.getContentType();
if (contentType != null && contentType.indexOf("multipart/form-data") != -1)
{
in = new DataInputStream(request.getInputStream());
int formDataLength = request.getContentLength();
if (formDataLength > MAX_SIZE)
{
out.println("Sorry the file is too large to uploaad ");
out.flush();
return;
} // end of if
byte dataBytes[] = new byte[formDataLength];
int bytesRead=0;
int totalBytesRead=0;
while (totalBytesRead < formDataLength)
{
bytesRead = in.read(dataBytes,totalBytesRead,formDataLength);
totalBytesRead += bytesRead;
} // end of while
String file = new String(dataBytes);
dataBytes = null;
int lastIndex = contentType.lastIndexOf("=");
String boundary =contentType.substring(lastIndex+1,contentType.length());
String directory="";
if(file.indexOf("name =\"Directory\"") > 0);
{
directory = file.substring(file.indexOf("name=\"Directory\""));
directory=directory.substring(directory.indexOf("\n")+1);
directory = directory.substring(0,directory.indexOf("\n")-1);
if (directory.indexOf("..")>0)
{
out.println("Security Error: You cannot do this ");
return;
}
}// end of if
String successPage="";
if(file.indexOf("name=\"SuccessPage\"")>0)
{
successPage=file.substring(file.indexOf("name=\"SuccessPage\""));
successPage=successPage.substring(successPage.indexOf("\n")+1);
successPage=successPage.substring(successPage.indexOf("\n")+1);
successPage = successPage.substring(0,successPage.indexOf("\n")-1);
}
String overWrite;
if(file.indexOf("name=\"OverWrite\"")>0)
{
overWrite = file.substring(file.indexOf("name=\"OverWrite\""));overWrite = overWrite.substring(overWrite.indexOf("\n")+1);
overWrite = overWrite.substring(overWrite.indexOf("\n")+1);
overWrite = overWrite.substring(0,overWrite.indexOf("\n")-1);
}else // end of if
{
overWrite="false";
}// end of else
String overWritePage="";
if (file.indexOf("name=\"OverwritePage\"")>0)
{
overWritePage=file.substring(file.indexOf("name=\"OverWritePage\""));
overWritePage = overWritePage.substring(overWritePage.indexOf("\n")+1);
overWritePage = overWritePage.substring(overWritePage.indexOf("\n")+1);
overWritePage = overWritePage.substring(0,overWritePage.indexOf("\n")-1);
}
String saveFile = file.substring(file.indexOf("filename=\"")+10);
saveFile=saveFile.substring(0,saveFile.indexOf("\n"));
saveFile = saveFile.substring(saveFile.lastIndexOf("\\")+1,saveFile.indexOf("\""));
int pos;
pos = file.indexOf("filename=\"");
pos = file.indexOf("\n",pos)+1;
pos=file.indexOf("\n",pos)+1;
int boundaryLocation = file.indexOf(boundary,pos)-4;
String fileName = new String(rootPath+directory+saveFile);
File checkFile = new File(fileName);
if (checkFile.exists())
{
if (!overWrite.toLowerCase().equals("true"))
{
if (overWritePage.equals(""))
{
out.println("Sorry the file already exists");
}else // end of if
{
response.sendRedirect(overWritePage);
} // end of else
return ;
}// end of if
} // end of if
File fileDir = new File(rootPath+directory);
if (!fileDir.exists())
{
fileDir.mkdirs();
} // end of if
fileOut = new FileOutputStream(fileName);
fileOut.write(file.getBytes(),0,file.length());
if (successPage.equals(""))
{
out.println(successMessage);
out.println("File Written to "+fileName);
}else // end of if
{
response.sendRedirect(successPage);
}
}else
{
out.println("Request not multipart/form data");
}
} catch(Exception e)
{
try
{
System.out.println("Error in do Post:"+e);
out.println("An unexpected error has occoured");
out.println("Error description :"+e);
}catch(Exception ex)
{
}
finally
{
try
{
in.close();
}catch(Exception ex)
{
}
try
{
out.close();
}catch(Exception ex)
{
}
}
}
any sugessions will be of gr8 help
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