i want to download a csv file from a internet url. I have tried every code that i can find online and not able to download.
URL google = new URL("myurl");
ReadableByteChannel rbc = Channels.newChannel(google.openStream());
FileOutputStream fos = new FileOutputStream("C://excelsheet.csv");
fos.getChannel().transferFrom(rbc, 0, 1 << 24);
This code is not working
I used this function , it is not working too.
public stacvoid saveUrl(String filename, String urlString) throws MalformedURLException, IOException
{
BufferedInputStream in = null;
FileOutputStream fout = null;
try
{
in = new BufferedInputStream(new URL(urlString).openStream());
fout = new FileOutputStream(filename);
byte data[] = new byte[1024];
int count;
while ((count = in.read(data, 0, 1024)) != -1)
{
fout.write(data, 0, count);
}
}
finally
{
if (in != null)
in.close();
if (fout != null)
fout.close();
}
}
I tried a simple input stream on my url , that doesn't work too.
URL oracle = new URL("myurl");
URLConnection yc = oracle.openConnection();
BufferedReader br = new BufferedReader(new InputStreamReader(
yc.getInputStream()));
Now instead of myurl , if i type any other url , the bufferedreader does get data. If I enter myurl in a browser i get a popup to save or download the csv file. So the problem is not with an incorrrect "myurl"
Is it possible that the servelet/code running on "myurl" actually checks if the request is coming from a browser and only then sends the data.
Thanks everyone . Used httpclient and it works for me. Heres the code that downloads an csv file , saves it locally and then reads it and parses all the tokens.
HttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("your url to download");
HttpResponse response = httpclient.execute(httpget);
System.out.println(response.getProtocolVersion());
System.out.println(response.getStatusLine().getStatusCode());
System.out.println(response.getStatusLine().getReasonPhrase());
System.out.println(response.getStatusLine().toString());
HttpEntity entity = response.getEntity();
if (entity != null) {
FileOutputStream fos = new java.io.FileOutputStream("C://excelsheet.csv");
entity.writeTo(fos);
fos.close();
}
//create BufferedReader to read csv file
BufferedReader br = new BufferedReader( new FileReader("C://excelsheet.csv"));
String strLine = "";
StringTokenizer st = null;
int lineNumber = 0, tokenNumber = 0;
while( (strLine = br.readLine()) != null)
{
lineNumber++;
//break comma separated line using ","
st = new StringTokenizer(strLine, ",");
while(st.hasMoreTokens())
{
//display csv values
tokenNumber++;
System.out.println("Line # " + lineNumber +
", Token # " + tokenNumber
+ ", Token : "+ st.nextToken());
}
//reset token number
tokenNumber = 0;
}
}
catch (Exception e) {
System.out.println("insdie the catch part");
System.out.println(e.toString());
}
Have you tried the HttpClient lib? I used it sometime ago to download a set of exams from a site automatically.
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