code for upload(pleas reply within 2 days)

**santybanty20** · Mar 31 '07, 08:50 AM

sir,i have written the code for file uploading but it is very slow like it takas 2 to 3 minutes for 5 kb file and for 1 mb abt 20 minutes.so here is my code please help me for fast uploading also the code for download is given but it has some error help me in this because i have to submit after 3 days...help

[HTML] <html>
<body>
<%
String str=(String)ses sion.getAttribu te("cn");
//out.println(str );
if(str==null)
{
%>
<script language="javas cript">
alert("Unauthor ised Entry" + '/n' + "Please Login");
location.href=" Faculty Login.jsp";
</script>
<%
}

%>
<%@ page import="java.io .*,javax.servle t.http.HttpServ letRequest,java x.servlet.Servl etInputStream" %>
<%@ page import="java.io .FileWriter,jav a.io.IOExceptio n" %>
<%
String savePath = "", filepath = "", filename = "";
String contentType = "", fileData = "", strLocalFileNam e = "";
int startPos = 0, endPos = 0;
int BOF = 0, EOF = 0;
%>
<%!
//copy specified number of bytes from main data buffer to temp data buffer
void copyByte(byte [] fromBytes, byte [] toBytes, int start, int len)
{
for(int i=start;i<(star t+len);i++)
{
toBytes[i-start]=fromBytes[i];
}
}
%>
<%
contentType = request.getCont entType();
out.println("Content type is :: " +contentType);
if ((contentType != null) && (contentType.in dexOf("multipar t/form-data") >= 0))
{
DataInputStream in = new DataInputStream (request.getInp utStream());
DataInputStream in1 = in;
int formDataLength = request.getCont entLength();
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
while (totalBytesRead < formDataLength)
{
byteRead = in1.read(dataBy tes, totalBytesRead, formDataLength) ;
totalBytesRead += byteRead;
}
out.println("totalBytesRea d : " + totalBytesRead + " : formDataLength = " + formDataLength) ;

//String file = new String(dataByte s);
//out.println("File Contents: //////////////////////////////////// " + file + " //////////////////////////////// ");

byte[] line = new byte[128];
if (totalBytesRead < 3)
{
return; //exit if file length is not sufficiently large
}

String boundary = "";
String s = "";
int count = 0;
int pos = 0;

//loop for extracting boundry of file
//could also be extracted from request.getCont entType()
do
{
copyByte(dataBy tes, line, count ,1); //read 1 byte at a time
count+=1;
s = new String(line, 0, 1);
fileData = fileData + s;
pos = fileData.indexO f("Content-Disposition: form-data; name=\""); //set the file name
if(pos != -1)
endPos = pos;
}while(pos == -1);
boundary = fileData.substr ing(startPos, endPos);

//loop for extracting filename
startPos = endPos;
do
{
copyByte(dataBy tes, line, count ,1); //read 1 byte at a time
count+=1;
s = new String(line, 0, 1);
fileData = fileData + s;
pos = fileData.indexO f("filename=\"" , startPos); //set the file name
if(pos != -1)
startPos = pos;
}while(pos == -1);
do
{
copyByte(dataBy tes, line, count ,1); //read 1 byte at a time
count+=1;
s = new String(line, 0, 1);
fileData = fileData + s;
pos = fileData.indexO f("Content-Type: ", startPos);
if(pos != -1)
endPos = pos;
}while(pos == -1);
filename = fileData.substr ing(startPos + 10, endPos - 3); //to eliminate " from start & end
strLocalFileNam e = filename;
int index = filename.lastIn dexOf("\\");
if(index != -1)
filename = filename.substr ing(index + 1);
else
filename = filename;

//loop for extracting ContentType
boolean blnNewlnFlag = false;
startPos = endPos; //added length of "Content-Type: "
do
{
copyByte(dataBy tes, line, count ,1); //read 1 byte at a time
count+=1;
s = new String(line, 0, 1);
fileData = fileData + s;
pos = fileData.indexO f("\n", startPos);
if(pos != -1)
{
if(blnNewlnFlag == true)
endPos = pos;
else
{
blnNewlnFlag = true;
pos = -1;
}
}
}while(pos == -1);
contentType = fileData.substr ing(startPos + 14, endPos);

//loop for extracting actual file data (any type of file)
BOF = count + 1;
do
{
copyByte(dataBy tes, line, count ,1); //read 1 byte at a time
count+=1;
s = new String(line, 0, 1);
fileData = fileData + s;
pos = fileData.indexO f(boundary, startPos); //check for end of file data i.e boundry value
}while(pos == -1);
EOF = count - boundary.length ();
//file data extracted

out.println(" 0. Local File Name = " + strLocalFileNam e);
out.println(" 1. filename = " + filename);
out.println("2. contentType = " + contentType);
out.println("3. startPos = " + BOF);
out.println("4. endPos = " + EOF);
out.println("5. boundary = " + boundary);

//create destination path & save file there
String appPath = application.get RealPath("/");
out.println("appPath : " + appPath);
String destFolder = appPath + ""; //change this as required
filename= destFolder + filename;
FileOutputStrea m fileOut = new FileOutputStrea m(filename);
fileOut.write(d ataBytes, BOF, (EOF - BOF));
fileOut.flush() ;
fileOut.close() ;
//out.println("File saved as >> " + filename);
//file saved at destination
//out.println("File data : ******* *************** **** " + (new String(dataByte s,startPos, (endPos - startPos))) + " ****** *************** *****");
}
else
{
out.println("Er ror in uploading ");
}
%>
<script language="javas cript">
alert("File Successfully Uploaded");
location.href=" Faculty Welcome.jsp"
</script>
</body>
</html>
[/HTML]