Hi michael
protected Hashtable parseMulti(String boundary, ServletInputStream in)
throws IOException {
here what is the value for the String boundary.
Sankar
Michael Weller wrote:
> U can use this method to do the parsing for u:
>
> protected Hashtable parseMulti(String boundary, ServletInputStream in)
> throws IOException {
>
> int buffSize = 1024*8; // 8K
> Hashtable hash = new Hashtable();
> int result;
> String line;
> String lowerline;
> String boundaryStr = "--"+boundary;
> ByteArrayOutputStream content;
> String filename;
> String contentType;
> String name;
> String value;
>
> byte[] b = new byte[buffSize];
>
> result = in.readLine(b,0,b.length);
> // failure.
> if (result == -1)
> throw new IllegalArgumentException("InputStream truncated");
> line = new String(b,0,0,result);
> // failure.
> if (!line.startsWith(boundaryStr))
> throw new IllegalArgumentException("MIME boundary missing: "+line);
> while (true) {
> // Some initialization
> filename = null;
> contentType = null;
> content = new ByteArrayOutputStream();
> name = null;
>
> // get next line (should be content disposition)
> result = in.readLine(b,0,b.length);
> if (result == -1) return hash;
> line = new String(b,0,0,result-2);
> lowerline = line.toLowerCase();
> if (!lowerline.startsWith("content-disposition"))
> // don't know what to do, so we'll keep looking...
> continue;
> // determine what the disposition is
> int ind = lowerline.indexOf("content-disposition: ");
> int ind2 = lowerline.indexOf(";");
> if (ind == -1 || ind2 == -1)
> throw new IllegalArgumentException(
> "Content Disposition line misformatted: "+line);
> String disposition = lowerline.substring(ind+21,ind2);
> if (!disposition.equals("form-data"))
> throw new IllegalArgumentException(
> "Content Disposition of "+disposition+" is not supported");
> // determine what the name is
> int ind3 = lowerline.indexOf("name=\"",ind2);
> int ind4 = lowerline.indexOf("\"",ind3+7);
> if (ind3 == -1 || ind4 == -1)
> throw new IllegalArgumentException(
> "Content Disposition line misformatted: "+line);
> name = line.substring(ind3+6,ind4);
> // determine filename, if any
> int ind5 = lowerline.indexOf("filename=\"",ind4+2);
> int ind6 = lowerline.indexOf("\"",ind5+10);
> if (ind5 != -1 && ind6 != -1) {
> filename = line.substring(ind5+10,ind6);
> }
>
> // Whew! We now move onto the next line, which
> // will either be blank, or Content-Type, followed by blank.
> result = in.readLine(b,0,b.length);
> if (result == -1) return hash;
> line = new String(b,0,0,result-2); // -2 to remove \r\n
> lowerline = line.toLowerCase();
> if (lowerline.startsWith("content-type")) {
> int ind7 = lowerline.indexOf(" ");
> if (ind7 == -1)
> throw new IllegalArgumentException(
> "Content-Type line misformatted: "+line);
> contentType = lowerline.substring(ind7+1);
> // read blank header line
> result = in.readLine(b,0,b.length);
> if (result == -1) return hash;
> line = new String(b,0,0,result-2); // -2 to remove \r\n
> if (line.length() != 0) {
> throw new IllegalArgumentException(
> "Unexpected line in MIMEpart header: "+line);
> }
> } else if (line.length() != 0) {
> throw new IllegalArgumentException(
> "Misformatted line following disposition: "+line);
> }
>
> //read content, implement readahead by one line
> boolean readingContent = true;
> boolean firstLine = true;
> byte[] buffbytes = new byte[buffSize];
> int buffnum = 0;
>
> result = in.readLine(b,0,b.length);
> if (result == -1) return hash;
> line = new String(b,0,0,result);
> if (!line.startsWith(boundaryStr)) {
> System.arraycopy(b,0,buffbytes,0,result);
> buffnum = result;
> result = in.readLine(b,0,b.length);
> if (result == -1) return hash;
> line = new String(b,0,0,result);
> firstLine = false;
> if (line.startsWith(boundaryStr)) {
> readingContent = false;
> }
> } else {
> readingContent = false;
> }
>
> while (readingContent) {
> content.write(buffbytes,0,buffnum);
> System.arraycopy(b,0,buffbytes,0,result);
> buffnum = result;
> result = in.readLine(b,0,b.length);
> if (result == -1) return hash;
> line = new String(b,0,0,result);
> if (line.startsWith(boundaryStr)) readingContent = false;
> }
> if (!firstLine) {
> // -2 to trim \r\n
> if (buffnum>2)
> content.write(buffbytes,0,buffnum-2);
> }
>
> //now set appropriate variable, populate hashtable
> if (filename == null) {
> if (hash.get(name) == null) {
> String[] values = new String[1];
> values[0] = content.toString();
> hash.put(name,values);
> } else {
> Object prevobj = hash.get(name);
> if (prevobj instanceof String[]) {
> String[] prev = (String[])prevobj;
> String[] newStr = new String[prev.length+1];
> System.arraycopy(prev,0,newStr,0,prev.length);
> newStr[prev.length] = content.toString();
> hash.put(name,newStr);
> } else {
> //now what? I think this breaks the standard.
> throw new IllegalArgumentException("failure in
> parseMulti hashtable building code");
> }
> }
> } else {
> // Yes, we don't return Hashtable[] for multiple files of
> same name. AFAIK, that's not allowed.
> Hashtable filehash = new Hashtable(4);
> filehash.put("name",name);
> filehash.put("filename",filename);
> if (contentType == null) contentType =
> "application/octet-stream";
> filehash.put("content-type",contentType);
> filehash.put("content",content.toByteArray());
> hash.put(name,filehash);
> }
> }
> }
>
> i think it's self-explanatory how to retrieve the values out of the
> returned Hashtable.
> i prefer this to jason hunter's classes.
>
> -mw
>
> At 12:12 11.06.2001 +0530, you wrote:
> >----- Original Message -----
> >From: "Ovais Ahmad Khan" <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >
> > > now in the servlet's doPost method, i'm using the ServletInputStream to
> > > get the data but it's giving me the data in raw format, with all the
> > > headers,...
> >
> >That is why ServletInputStream is there. If you use this, you will have to
> >read the data from the inputstream and parse this InputStream to get the
> >file.
> >
> > > now does there exists some trick to get the real data (file) out of
> > > this.
> >
> >There is no trick in doing this. Just parsing the multi part request.
> >If you do not want to get into parsing the multi-part request, it is already
> >done for you by Jason Hunter.
> >His classes are available on the net at
> >http://www.servlets.com/cos/index.html
> >Jason has detailed these classes in his book Servlet Programming.
> >
> >Regds,
> >Gokul
> >
> > >
> > > thanks
> > > --
> > > Ovais
> >
> >___________________________________________________________________________
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> >
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>
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___________________________________________________________________________
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