I actually have an improvement - you no longer have to
modify the
httpclient library at all. Simply a 1 line change to the
webdavresource method does the trick! I can't figure out
why httpclient
doesn't handle chunked code better but since auto seems to
chunk if
needed it seems a harmless change and makes sharepoint much
happier.
Change this method
public boolean putMethod(String path, InputStream is)
throws HttpException, IOException {
setClient();
PutMethod method = new
PutMethod(URIUtil.encodePathQuery(path));
generateIfHeader(method);
if (getGetContentType() != null &&
!getGetContentType().equals(""))
method.setRequestHeader("Content-Type",
getGetContentType());
method.setRequestContentLength(method.CONTENT_LENGTH_CHUNKED
);
method.setRequestBody(is);
generateTransactionHeader(method);
int statusCode = client.executeMethod(method);
setStatusCode(statusCode);
return (statusCode >= 200 && statusCode
< 300) ? true : false;
}
To:
public boolean putMethod(String path, InputStream is)
throws HttpException, IOException {
setClient();
PutMethod method = new
PutMethod(URIUtil.encodePathQuery(path));
generateIfHeader(method);
if (getGetContentType() != null &&
!getGetContentType().equals(""))
method.setRequestHeader("Content-Type",
getGetContentType());
method.setRequestContentLength(method.CONTENT_LENGTH_AUTO);
method.setRequestBody(is);
generateTransactionHeader(method);
int statusCode = client.executeMethod(method);
setStatusCode(statusCode);
return (statusCode >= 200 && statusCode
< 300) ? true : false;
}
-----Original Message-----
From: Miguel Figueiredo [mailto:mfigueiredo maisis.pt]
Sent: Wednesday, December 13, 2006 12:24 PM
To: 'Slide Users Mailing List'
Subject: RE: "PUT" to a Microsoft Sharepoint
working with Slide
Hey Chandler,
Many thanks for this important piece of the information!
I'm sure it can be used in many other situations related
with NTLM
authentication.
Best regards,
Miguel Figueiredo
-----Original Message-----
From: Andy Chandler [mailto:achandlervisionael.com]
Sent: quarta-feira, 13 de Dezembro de 2006 17:53
To: slide-userjakarta.apache.org
Subject: "PUT" to a Microsoft Sharepoint working
with Slide
Well since I've seen others with similar issues I thought
I'd share how
I managed to get it working - it does take a modification to
both the
slide and the httpclient libraries. Please Note I've done
my work with
HTTPClient 3.01 and Slide 2.1 (I've also done the same work
with the
trunks of both projects and the result is the same)
Problem: Need to upload files to Microsoft Sharepoint with
NTLM
authentication. NTLM authentication will cause an
exception about
unbuffered enclosing entity can't be resent or retried (I'm
sorry I no
longer get the message so I can't paste it in). Contrary
to other
messages if the server is Microsoft and the client is java
turning off
expect-continue does not fix the problem. The problem
stems from the
fact that the Put Method on http client is setting the size
of the
content when it creates an InputStreamRequestEntity. This
causes the
entity to not buffer itself (Why you would want this I don't
know since
it only buffers 4k at a time). I haven't tried large files
yet so
there may still be additional work that has to be done to
get this to
work out correctly if the file is large. Anyhow the
buffering is
important simply because when you try to put a file to an
NTLM
authenticated resource the first attempt will fail with a
not
authorized. This will cause a challenge response handshake
and then a
retry happens. The problem is with an unbuffered input
stream the
retry does not occur because the enclosing entity claims its
not
repeatable. Failure every time.
My solution which is not necessarily elegant but may help
some desperate
developer out there consists of the following changes:
1: In the jakarta.commons.httpclient project modify:
org.apache.commons.httpclient.methods.InputStreamRequestEnti
ty
When contentlength is declared set it equal to
CONTENT_LENGTH_AUTO // This change is probably not
absolutely required
but its what I did.
org.apache.commons.httpclient.methods.EntityEnclosingMethod
Modify method generateRequestEntity -> change
the new for
new InputStreamRequestEntity to use the single arge
constructor as in
" new InputStreamRequestEntity(is)" // By not
passing the size it
stays in CONTENT_LENGTH_AUTO mode which permits buffering.
2: In the Slide webdavclient project modify
org.apache.webdav.lib.WebdavResource
In the put(String,InputStream) method remove the
content length
"chunked" set command.
Sample code that now works:
public static void main(String[] args){
try {
File file = new File(src);
if (file.exists()) {
System.out.println("Uploading '" +
file.getCanonicalPath()
+ "' to '" + dest + "' ");
uploadWebDav(file);
} catch (Exception e) {
System.out.println(e.getMessage());
}
private static void uploadWebDav(File file) { WebdavResource
webdavResource = null; try { NTCredentials creds2 = new
NTCredentials("myusername",
"mypassword", "myclientpc",
"NTDOMAIN");
webdavResource = new WebdavResource(
"http://SHAREPOINTSERVE
R/Shared Documents", creds2);
String[] list = webdavResource.list();
for (String s :list){
System.out.println(s);
}
System.out.println("Uploading");
// Note - use the putmethod where specify a destination path
and that
you include the desired filename!!!!
if (webdavResource.putMethod("http://SHAREPOINTSERVE
R/Shared
Documents/cofs9.zip" , new FileInputStream(file))) {
System.out.println("succeeded.");
}
} catch (Exception e1) {
System.out.println(e1.getMessage());
}
}
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