I met the same problem some time ago...
I had the solution but it works too bad for big files.
So then i changed it (with customer confirmation) to just urls.
You must have an empty nd-page with special string to replace content (e.g:VeryBegin).
In onBeforeDisplay for page use CSpider.getOutputStream () to save original stream
and CSpider.setOutputStream (_myStream) for redirect nd-formatting.
In onBeforeHtmlOutput you have to get html-source of page, get substring before
"VeryBegin".
It will be http-header.
Replace "text/html" with your file's mime.
Send header using CSpHtml.sendRawDataItem(_origStream)
Then open your file and send it block by block using CSpHtml.sendRawDataItem
At the end call CSpHtml.flush(_origStream);
Warning! It works slowly! And tested only in Nd v.3.1.3.
---------------------- EXAMPLE source------------------
import spider.*;
import spider.access.*;
import spider.util.*;
import spider.session.*;
import spider.database.*;
import spider.visual.*;
import spider.html.*;
import java.net.*;
import java.io.*;
import spider.event.*;
import spider.event.*;
//[[SPIDER_CLASS BEGIN
final public class pgaShowBody extends CSpPage
//]]SPIDER_CLASS END
{
protected CSpStringOutputStream _origStream = null;
protected ByteArrayOutputStream _myArrayStream = null;
protected CSpStringOutputStream _myStream = null;
protected static String file_ext[]={
"txt", "c", "cp", "cpp", "p", "pas", "jav",
"java","prg", "bat", "h", "hpp", "ini", "sql",
"htm", "html", "asp", "shtml",
"gif", "jpg", "jpeg", "bmp", "pcx", "tif", "tiff",
"rtf", "doc",
"xls", "xlc", "xlt", "xlw", "xlm", "xld", "xla", "xll",
"dbf", "pdf",
"gz", "hqx", "sit", "cpt",
"zip", "rar", "tar", "z",
"exe", "sea",
"ins","isp", "eml","nws", "url",
"bin", "class",
"aif", "aiff", "wav", "midi", "mid", "mov", "qt",
"mpg", "mpeg", "dat", "avi", "dd"
};
protected static String mime_type[]={
"text/plain", "text/plain", "text/plain", "text/plain", "text/plain",
"text/plain", "text/plain",
"text/plain", "text/plain", "text/plain", "text/plain", "text/plain",
"text/plain", "text/plain",
"text/html", "text/html", "text/html", "text/html",
"image/gif", "image/jpeg", "image/jpeg", "image/x-MS-bmp", "image/pcx",
"image/tiff", "image/tiff",
"application/rtf", "application/msword",
"application/vnd.ms-excel","application/vnd.ms-excel","application/vnd.ms-excel",
"application/vnd.ms-excel","application/vnd.ms-excel","application/vnd.ms-excel",
"application/vnd.ms-excel","application/vnd.ms-excel",
"application/dbf", "application/pdf",
"application/x-gzip", "application/mac-binhex40", "application/x-stuffit",
"application/x-stuffit",
"application/x-zip-compressed", "application/rar", "application/x-tar",
"application/x-compress",
"application/x-msdownload", "application/self-extracting",
"application/x-internet-signup", "application/x-internet-signup",
"message/rfc822", "message/rfc822", "text/url",
"application/x-macbinary", "application/x-class",
"audio/x-aiff", "audio/x-aiff", "audio/x-wav", "audio/x-midi", "audio/x-midi",
"video/quicktime", "video/quicktime",
"video/mpeg", "video/mpeg", "video/mpeg", "video/x-msvideo",
"application/mac-diskdoubler"
};
public static String GetMIMEByFileName (String file_name) {
String name=AzUt.GetFileExt(file_name, "");
String res="application/octet-stream";
int i=0;
if (name.length()==0) return res;
for (i= -1; ++i < file_ext.length; ) {
if (name.equals(file_ext[i])) {
res=mime_type[i];
break;
}
}
return res;
}
synchronized protected String GetHtml() {
String htmlPage="";
// Flush everything so that our byte array will get loaded
// with the HTML
try {
CSpHtml.flush (_myStream);
// Convert the byteArray into a String
htmlPage=_myArrayStream.toString ();
// Restore the original output stream
CSpider.setOutputStream (_origStream);
_myStream.close();
_myArrayStream.reset();
_myStream=null;
_myArrayStream=null;
}
catch (Exception ex) {
// send any exceptions to the Log
htmlPage=null;
AzUt.send ("pgaShowBody.onBeforeHtmlOutputEvent: " + ex );
}
return htmlPage;
}
//[[SPIDER_EVENTS BEGIN
//[[SPIDER_EVENT<onBeforeDisplayEvent ()>
synchronized protected int onBeforeDisplayEvent ()
{
CSpValue body_doc=CSpider.getUserSessionObject("soa_BODY_DOC");
if (AzUt.isNull(body_doc)) {
AzUt.Message("Empty file name", "AzaDobro.pgaMoveEdit");
return STOP;
}
//�������� ������� �����
File f=new File(body_doc.toString());
if (! f.canRead()) {
AzUt.Message("File "+body_doc.toString()+" is not found.",
"AzaDobro.pgaMoveEdit");
return STOP;
}
// Save the original output stream
if (_myArrayStream == null && _myStream==null) {
if (_origStream==null) {
_origStream = CSpider.getOutputStream ();
}
// Construct a byte array output stream and create a
// CSpStringOutputStream out of it
_myArrayStream = new ByteArrayOutputStream (600);
_myStream = new CSpStringOutputStream (_myArrayStream);
}
else {
AzUt.Message("Server is busy", "AzaDobro.pgaShowBody");
return STOP;
}
// Set our temporary string output stream to be used
// when constructing the HTML ("stealing" the HTML page)
CSpider.setOutputStream (_myStream);
return PROCEED;
}
//]]SPIDER_EVENT<onBeforeDisplayEvent ()>
//[[SPIDER_EVENT<onBeforeHtmlOutputEvent ()>
protected int onBeforeHtmlOutputEvent ()
{
int command = SKIP;
CSpValue body_doc=CSpider.getUserSessionObject("soa_BODY_DOC");
if (AzUt.isNull(body_doc)) {
CSpHtml.reset ();
CSpHtml.setAutoMode (true);
CSpHttp.reset ();
CSpHttp.setAutoMode (true);
AzUt.Message("File name is empty", "AzaDobro.pgaMoveEdit");
return STOP;
}
try {
// Convert the byteArray into a String
String htmlPage=GetHtml();
String file_name=body_doc.toString();
File f=new File(file_name);
int i=htmlPage.indexOf("AzaBodyDoc");
//if name is good
if (i>=0 && f.exists()) {
//leave header
htmlPage=htmlPage.substring(0,i);
htmlPage=CSpUtil.replaceSubstring(
htmlPage,"text/html",
GetMIMEByFileName(f.getName()) );
// Write the modified HTML out
CSpHtml.sendRawDataItem (_origStream, htmlPage);
CSpHtml.setFooterHasBeenSent(true);
CSpHtml.setHeaderHasBeenSent(true);
BufferedInputStream buf_in=new BufferedInputStream(new
FileInputStream(f), 512);
if (buf_in != null) {
String s;
int res;
char c[]=new char[512];
i=0;
while (true) {
res=buf_in.read();
if (res== -1) break;
c[i]=(char)res;
if (++i >= 512) {
CSpHtml.sendRawDataItem(_origStream, new String(c, 0, i) );
i=0;
}
}
if (i>0) {
CSpHtml.sendRawDataItem(_origStream,
new String(c, 0, i) );
i=0;
}
//CSpHtml.sendRawDataItem(_origStream,
"\n---File name="+f.getName()+"\n---MIME="+GetMIMEByFileName(f.getName())+"\n");
CSpHtml.flush(_origStream);
buf_in.close();
}
CSpHtml.setFooterHasBeenSent(true);
CSpHtml.setHeaderHasBeenSent(true);
}//if substring found
else {
CSpHtml.reset ();
CSpHtml.setAutoMode (true);
CSpHttp.reset ();
CSpHttp.setAutoMode (true);
AzUt.Message("������ ��� �������� ��� �����. �� ����
������� ������� �����", "AzaDobro.pgaMoveEdit");
command=STOP;
}
//AzUt.send("Output
stream="+_myArrayStream.toString()+"$$$$$$$");
}//try
catch (Exception ex) {
// send any exceptions to the Log
CSpHtml.reset ();
CSpHtml.setAutoMode (true);
CSpHttp.reset ();
CSpHttp.setAutoMode (true);
command = STOP;
AzUt.Message("pgaShowBody.onBeforeHtmlOutputEvent: " + ex,
"AzaDobro.pgaMoveEdit");
}
_myStream=null;
_myArrayStream=null;
_origStream=null;
return command;
}
//]]SPIDER_EVENT<onBeforeHtmlOutputEvent ()>
//]]SPIDER_EVENTS END
}
------------------------------------------------------------------
"Senthil" <[EMAIL PROTECTED]> wrote:
>
>Hello,
> String url = "http://localhost:81/cgi-bin/ndCGI.exe/ProjectName/PageName" +
> "?userId=xyz" +
> "&passwd=pswd";
> CSpHttp.reset();
> CSpHttp.setAutoMode(false);
> CSpHttp.setHttpStatus(302);
> CSpHttp.write("Location:" + url );
> CSpHttp.write("\n\n");
>
>The above code redirects the browser to the url specified above. The URL parameters
>are visible, which I donot want to be visible. How to simulate the same thing as
>POST operation rather than GET ? or is there a way to send those information as
>HTTP Headers?
>
>Thanks,
>S.Senthil Kumar
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