No subject

server to get the length of that file which is stopped
in between.After that I want to skip() that portion in
InputStraem read().In my servlet I want to put
condition basis output stream that means if it is new
file then:-
In my servlet:-
===============
// create a DataInputStream to read from sender 
DataInputStream dis; 
dis = new DataInputStream(request.getInputStream()); 
OutputStream os; 
// create file output stream to write the output file 
System.err.println("Using output file " + outfile); 
os = new BufferedOutputStream(new
FileOutputStream(outfile));
And if it is Resume file server should open that file
in append mode instead of writting in the file:-
====================================================================================================

DataInputStream dis; 
dis = new DataInputStream(request.getInputStream()); 
OutputStream os; 
// create file output stream to write the output file 
System.err.println("Using output file " + outfile); 
os = new BufferedOutputStream(new
FileOutputStream(outfile,true)); 

the servlet would have to be able to distinguish these
two cases for that I want to use "if,else" condition
but what will be the condition. Iam using for new file
[FileOutputStream(File fileobj)] constructor.And  for
append I should use [FileOuputStream(String
filepath,boolean append)] constructor.
But Iam confused how I can use
[FileOutputStream(String filepath)] constructor in
case of new file.

servlet file:-
============
...............
..............
String filename; 
filename = request.getParameter("name"); 
String path; 
path = request.getParameter("path"); 
File outfile = new File(filename);
outfile = new File(path, filename);
....................
.....................

Interface:-(Resume portion code)
=========
..............
..............

//create url
u1 = new URL(base + "?name="
+URLEncoder.encode(f.getName()) + "&path="
+URLEncoder.encode(path)); 
..........
try { 
// step 7 - open the input stream 
log("step 7 - open the input stream"); 
InputStream is = uc.getInputStream(); 

//skip the bytes already have in server
is.skip(str);

// step 8 - read the input stream 
int cc; 
byte [] buf = new byte[512]; 
log("step 8 - read the input stream"); 
for(cc = is.read(buf, 0, 512); cc > 0; cc =
is.read(buf, 0, 512)) { 
log(new String(buf, 0, cc)); 
} 

// step 9 - close the input stream 
log("step 9 - close the input stream"); 
is.close(); 
.............
.............

Regards
Bikash

 

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