topic Re: HttpUrlConnection and webscripts in Alfresco Archive

HttpUrlConnection and webscripts

nowhere — Thu, 18 Jun 2009 17:55:48 GMT

Hi all,I'm trying to make a post request to a webscript by java class HttpUrlConnection, but I get 401 response code. How can I send authentication data to webscripts? And what?Thanks!

Re: HttpUrlConnection and webscripts

mrogers — Thu, 18 Jun 2009 18:10:37 GMT

http://wiki.alfresco.com/wiki/Web_Scripts#Authenticating

You need to add an alf_ticket parameter to your URL.

Re: HttpUrlConnection and webscripts

nowhere — Thu, 18 Jun 2009 18:15:01 GMT

It's a post request, I can't add parameters after url (in the form ?name=value), don't I?

Re: HttpUrlConnection and webscripts

mrogers — Thu, 18 Jun 2009 18:29:10 GMT

Yes you can add the ticket to the URL. Or you can stick it in the HTTP header.

I'm mushing up terms here. However I hope I'm clear.

Re: HttpUrlConnection and webscripts

nowhere — Thu, 18 Jun 2009 19:08:27 GMT

Thanks mrrogers, it works!
I was thinking it wouldn't have accepted params in URL.
Your was a great help!

Re: HttpUrlConnection and webscripts

nowhere — Thu, 18 Jun 2009 21:49:01 GMT

Now there is another issue:

I can make post request to my java backed webscript…but I can't read parameters sent.

I have this method responsible of connection:

protected String connect (String url , File file, String nomeFile, String ticket){

   HttpURLConnection connection = null;
   DataOutputStream dos = null;
   BufferedReader rd = null;
   StringBuilder sb = null;
   URL serverAddress = null;

   int bytesRead, bytesAvailable, bufferSize;
   byte[] buffer;

   String lineEnd = "\r\n";
   String twoHyphens = "–-";
   String boundary = "*****";
   try {

         serverAddress = new URL(url);
         //set up out communications stuff
         connection = null;                  //Set up the initial connection
         connection = (HttpURLConnection)serverAddress.openConnection();


         connection.setDoInput(true);
         connection.setDoOutput(true);
         connection.setUseCaches(false);
         connection.setRequestMethod("POST");
         connection.setRequestProperty("Connection", "Keep-Alive");
         //Content-Type della form
         connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
         connection.connect();

         dos = new DataOutputStream( connection.getOutputStream() );

         dos.writeBytes(twoHyphens + boundary + lineEnd);
         //My data
         dos.writeBytes("Content-disposition: form-data; name=\"nome\"" + lineEnd);
         dos.writeBytes(lineEnd);
         dos.writeBytes(nomeFile);
         dos.writeBytes(lineEnd);
         dos.writeBytes(twoHyphens + boundary + lineEnd);

         dos.writeBytes("Content-disposition: form-data; name=\"step\"" + lineEnd);
         dos.writeBytes(lineEnd);
         dos.writeBytes("2");
         dos.writeBytes(lineEnd);
         dos.writeBytes(twoHyphens + boundary + lineEnd);

         dos.writeBytes("Content-Disposition: form-data; name=\"upload\";" + " filename=\"" + file +"\"" + lineEnd);
         dos.writeBytes(lineEnd);

         FileInputStream fileInputStream = new FileInputStream(file);

         bytesAvailable = fileInputStream.available();
         bufferSize = bytesAvailable;
         buffer = new byte[bufferSize];

         bytesRead = fileInputStream.read(buffer, 0, bufferSize);
         while (bytesRead > 0) {

            dos.write(buffer, 0, bufferSize);
            bytesAvailable = fileInputStream.available();
            bufferSize =bytesAvailable;
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);

         }

         fileInputStream.close();

         dos.writeBytes(lineEnd);
         dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);


         try {

            rd = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            sb = new StringBuilder();
            String str;

            while (( str = rd.readLine()) != null) {

               System.out.println("Server response is: "+str);
               System.out.println("");
               sb.append(str + '\n');
            }


            }catch (IOException ioex) {

               System.out.println("From (ServerResponse): "+ioex);

            }

      }……

And in my backed java class I want to access req.getParameter("step"), but it is null.
Any suggestion?

Re: HttpUrlConnection and webscripts

nowhere — Fri, 19 Jun 2009 09:37:20 GMT

Here it's my HTTP POST request and response, sniffed:

POST /alfresco/service/ricerca/uploadDoc
HTTP/1.1
Connection: Keep-Alive
Content-Type: multipart/form-data;boundary=*****
Cache-Control: no-cache
Pragma: no-cache
User-Agent: Java/1.6.0_12
Host: localhost:8080
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Content-Length: 222

*****
Content-Disposition: form-data; name="nome"

documento
*****
Content-Disposition: form-data; name="step"

2
*****
Content-Disposition: form-data; name="upload"; filename="pwd.txt"

pwd2
pwd1
*****

HTTP/1.1 500 Internal Server Error
Server: Apache-Coyote/1.1
Cache-Control: no-cache
Pragma: no-cache
Content-Type: text/html;charset=UTF-8
Transfer-Encoding: chunked
Date: Fri, 19 Jun 2009 09:33:14 GMT
Connection: close

{
    "status" :
{
    "code" : 500,
    "name" : "Internal Error",
    "description" : "An error inside the HTTP server which prevented it from fulfilling the request."
},

"message" : "05190042 Wrapped Exception (with status template): null",
"exception" : "org.alfresco.web.scripts.WebScriptException - 05190042 Wrapped Exception (with status template): null",

"callstack" :
[
     ""      ,"java.lang.NumberFormatException: null"
      ,"java.lang.Integer.parseInt(Integer.java:415)"
      ,"java.lang.Integer.<init>(Integer.java:620)"
      ,"com.verosa.ricerca.UploadDoc.executeImpl(UploadDoc.java:55)"
      ,"org.alfresco.web.scripts.DeclarativeWebScript.executeImpl(DeclarativeWebScript.java:223)"
      ,"org.alfresco.web.scripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:70)"
      ,"org.alfresco.repo.web.scripts.RepositoryContainer$2.execute(RepositoryContainer.java:319)"
      ,"org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:326)"
      ,"org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:233)"
      ,"org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:368)"
      ,"org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:390)"
      ,"org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:273)"
      ,"org.alfresco.web.scripts.AbstractRuntime.executeScript(AbstractRuntime.java:262)"
      ,"org.alfresco.web.scripts.AbstractRuntime.executeScript(AbstractRuntime.java:139)"
      ,"org.alfresco.web.scripts.servlet.WebScriptServlet.service(WebScriptServlet.java:122)"
      ,"javax.servlet.http.HttpServlet.service(HttpServlet.java:717)"
      ,"org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)"
      ,"org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)"
      ,"org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)"
      ,"org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)"
      ,"org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)"
      ,"org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)"
      ,"org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)"
      ,"org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)"
      ,"org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)"
      ,"org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)"
      ,"org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)"
      ,"java.lang.Thread.run(Thread.java:619)"
      ,"org.alfresco.web.scripts.WebScriptException: 05190042 Wrapped Exception (with status template): null"
      ,"org.alfresco.web.scripts.AbstractWebScript.createStatusException(AbstractWebScript.java:622)"

],

"server" : "Alfresco Labs v3.2.0 (_Preview2_dev @build-number@) schema 2.011",
"time" : "19-giu-2009 11.33.14"
}

Hoping It maybe usefull.

Re: HttpUrlConnection and webscripts

mrogers — Fri, 19 Jun 2009 09:59:09 GMT

"Step" is in your form data and is therefore "Content" and not a "Parameter".

Re: HttpUrlConnection and webscripts

nowhere — Fri, 19 Jun 2009 12:20:28 GMT

Thanks mrrogers, but I get empty with following code:

Content cont = req.getContent();
         try {
     System.out.println("Content: " + cont.getContent());
……
…
‍‍‍‍‍‍

😞

Edit: data are on request as parameters (request.getParameter(name)). It was a mistake in POST request boundary.