Help about save text files to web server

moonrise1..

Help about save text files to web server

in Integration and Hardware • 1 year ago

Hi, everyone.

I am having a hard time to update a txt file （permission set to 777） on web server by using the code here:

http://wiki.processing.org/index.php?title=Saving_files_to_a_web-server

I have a txt file name data.txt and a php file named update.php at http://www.mydomain.com/Online/outgoing/, and all the codes are shown below. But when I ran the program, I got an error, and do not know how to fix it. Can anyone help me? Any hint and guide is very appreciated. Thanks

Bo

The code of processing on client part is :

String men;
String[] data;
String url;
String title;
String ext;
String folder;
boolean popup;

void setup() {

   title="data";
   ext="txt";
   url = "http://www.mydomain.com/Online/outgoing/";
   folder = "http://www.mydomain.com/Online/outgoing/";
   men = "Chernenko,Andropov, Brezhnev";
   data = split(men, ',');
   popup = false;

   saveToWeb_saveFileString(title, ext, folder, data, popup);
}

void draw(){
//do nothing
}
void saveToWeb_saveFileString(String title, String ext, String folder, String[] data, boolean popup)
{
println("SAVING File START");
postData(title+"_"+year()+nf(month(),2)+nf(day(),2)+"-"+nf(hour(),2)+nf(minute(),2)+nf(second(),2),ext,folder,join(data,"\n").getBytes(),popup);
println("SAVING File STOP");
}

void postData(String title, String ext, String folder, byte[] bytes, boolean popup)
{
try{
    URL u = new URL(url+"saveFile.php?title="+title+"&ext="+ext+"&folder="+folder);
    URLConnection c = u.openConnection();
    // post multipart data

    c.setDoOutput(true);
    c.setDoInput(true);
    c.setUseCaches(false);

    // set request headers
    c.setRequestProperty("Content-Type", "multipart/form-data; boundary=AXi93A");

    // open a stream which can write to the url
    DataOutputStream dstream = new DataOutputStream(c.getOutputStream());

    // write content to the server, begin with the tag that says a content element is comming
    dstream.writeBytes("--AXi93A\r\n");

    // discribe the content
    dstream.writeBytes("Content-Disposition: form-data; name=\"data\"; filename=\"whatever\" \r\nContent-Type: image/jpeg\r\nContent-Transfer-Encoding: binary\r\n\r\n");
    dstream.write(bytes,0,bytes.length);

    // close the multipart form request
    dstream.writeBytes("\r\n--AXi93A--\r\n\r\n");
    dstream.flush();
    dstream.close();

    // read the output from the URL
    try{
      BufferedReader in = new BufferedReader(new InputStreamReader(c.getInputStream()));
      String sIn = in.readLine();
      boolean b = true;
      while(sIn!=null){
        if(sIn!=null){
          if(popup) if(sIn.substring(0,folder.length()).equals(folder)) link(url+sIn, "_blank");
          System.out.println(sIn);
        }
        sIn = in.readLine();
      }
    }
    catch(Exception e){
      e.printStackTrace();
    }
}

catch(Exception e){
    e.printStackTrace();
}
}

The php file on server side is shown below:

;<?
$Title = $_GET['title'];
$Ext = $_GET['ext'];
$folder = $_GET['folder'];
$savepath = dirname($_SERVER["PATH_TRANSLATED"]);

$filename = $Title.".".$Ext;
while(file_exists($folder."/".$filename))
$filename = $Title."-".rand(2,500).".".$Ext;

if (is_uploaded_file($data))
{
   $newfile = $savepath."/".$folder."/".$filename;
   if (!copy($data, $newfile))
   {
      // if an error occurs the file could not
      // be written, read or possibly does not exist
      echo "Error #1 Uploading File.";
      exit();
   }else{
      echo $folder."/".$filename;
   }
} else {
   echo "Error #2 Uploading File.";
   exit();
}
?>

But after running the code, I got this error:
java.io.IOException: Server returned HTTP response code: 500 for URL: http://www.mydomain.com/Online/outgoing/saveFile.php?title=data_20120928-233150&ext=txt&folder=http://www.mydomain.com/Online/outgoing/
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1436)
    at sketch_120928b.postData(sketch_120928b.java:94)
    at sketch_120928b.saveToWeb_saveFileString(sketch_120928b.java:52)
    at sketch_120928b.setup(sketch_120928b.java:45)
    at processing.core.PApplet.handleDraw(PApplet.java:2103)
    at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:190)
    at processing.core.PApplet.run(PApplet.java:2006)
    at java.lang.Thread.run(Thread.java:662)

Replies(3)

PhiLho

Re: Help about save text files to web server

1 year ago

Error 500 means something wrong happened on the server. So, in your case, it is likely to be an issue with your PHP code, or permissions on the file system, or something similar.
It means you have to debug your PHP code to see what is happening.

For what it is worth, I made a similar sketch (uploading images or other data files) also inspired from the same wiki article. Perhaps you can get some inspiration from it:
http://bazaar.launchpad.net/~philho/+junk/Processing/files/head:/ImageUpload/

moonrise1..

Re: Help about save text files to web server

1 year ago

I still haven't fixed it. Anyone can give me some advice?

PhiLho

Re: Help about save text files to web server

1 year ago

Advices: debug your PHP code, add more checks there, ensure it is working with a simple HTML file, and so on. Again, check my sketch and the files coming with it.
The error happens on your server, so we cannot do the job for you.

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