Win a copy of Pragmatic AI this week in the Artificial Intelligence forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Jeanne Boyarsky
  • Liutauras Vilda
  • Campbell Ritchie
  • Tim Cooke
  • Bear Bibeault
Sheriffs:
  • Paul Clapham
  • Junilu Lacar
  • Knute Snortum
Saloon Keepers:
  • Ron McLeod
  • Ganesh Patekar
  • Tim Moores
  • Pete Letkeman
  • Stephan van Hulst
Bartenders:
  • Carey Brown
  • Tim Holloway
  • Joe Ess

UPloading a Big file  RSS feed

 
Ranch Hand
Posts: 39
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi all,
I am trying to upload a big file of size 3 MB.
I am using readLine(byte, int, byte) to upload this file.
It works fine. But takes about an hour to upload the file, which is unacceptable. Performance is crucial for our application.
Can any one suggest how to upload the file and achieve optimal performance
I am pasting the code snippet for your reference
ServletInputStream in = request.getInputStream();
byte[] line = new byte[128];
int i = in.readLine(line, 0, 128);
if (i < 3){
return null;
}
int boundaryLength = i - 2;
String boundary = new String(line, 0, boundaryLength);
fields = new Hashtable();

while (i != -1) {

fileData = new String();
String newLine = new String(line, 0, i);

if (newLine.startsWith("Content-Disposition: form-data; name=\""))
{
if (newLine.indexOf("filename=\"") != -1)
{
setFilename(new String(line, 0, i-2));

i = in.readLine(line, 0, 128);
setContentType(new String(line, 0, i-2));
i = in.readLine(line, 0, 128);
i = in.readLine(line, 0, 128);
newLine = new String(line, 0, i);
fileData+=newLine;
while (i != -1 && !newLine.startsWith(boundary)) {
i = in.readLine(line, 0, 128);
newLine = new String(line, 0, i);
fileData+=newLine;
}
}
else {
int pos = newLine.indexOf("name=\"");
String fieldName = newLine.substring(pos+6, newLine.length()-3);
i = in.readLine(line, 0, 128);
i = in.readLine(line, 0, 128);
newLine = new String(line, 0, i);
StringBuffer fieldValue = new StringBuffer(128);
while (i != -1 && !newLine.startsWith(boundary)) {
i = in.readLine(line, 0, 128);
if ((i==boundaryLength+2 || i==boundaryLength+4)
&& (new String(line, 0, i).startsWith(boundary)))
fieldValue.append(newLine.substring(0, newLine.length()-2));
elsefieldValue.append(newLine);
newLine = new String(line, 0, i);
}
fields.put(fieldName, fieldValue.toString());
}
}
i = in.readLine(line, 0, 128);

....
..
 
Consider Paul's rocket mass heater.
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!