Saving to the Server from an Applet

Hi all, I've posted a message similar to this before, but didn't get too far. I need to get an applet to be able to open a new browser window and display a web page containing two images from the applet, and several strings from the applet. I need the user to be able to save the images to their hard drive, and I need to be able to use them in email forms from the web page. I assume I would have to somehow save the images and a text file from the applet to the server. I have sucessfully converted my objects of type Image to .gif files (with help from these forums) now all I need to do is find some way to save them or somehow get them onto the web page. I have looked into using a servlet, and using sockets, with little sucess either way. With sockets I keep getting IOExceptions and it says Connection refused. Here's the code I'm using for sockets.
Socket socket;
try {
socket = new Socket(getCodeBase().getHost(), 8080);
}catch(UnknownHostException u)
{socket = null; System.out.println("Socket failed"); }
catch(IOException i)
{socket = null; System.out.println("IO Failed"); i.printStackTrace(); }I didn't get very far with Servlets, as for some reason I can't find very much help on them on the web. Any help is greatly appreciated.

smg123: Well, I've tried modding my policy file on my local machine, I simply gave All Permissions to the directy that contains the applet on my local machine, with no luck. Not sure about signing the applet, if I understand it correctly it seems like that's a bit overkill making the user accept it and such, when all it really needs to do is server side.
FelipeGaucho: I've looked at the servlet tutorial before, but I'll give it another shot. I can't ditch the applet approach entirely though, there's a ton of work put into the applet already.
JohanUP: I've tried a bunch of different port numbers, all with the same results.
Thanks for the tips guys, keep em coming :)

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Viewing HTML page saved on the server from the browser

Hi all
In my application i am having some HTML pages saved on the server. I had given an option to the user to view the HTML page from my application. behind the scene what i am doing is that the view request will get handled by a servlet and from that servlet iam locating the HTML page on the server directory and sending the HTML page to browser by using the Servlet OutputStream. The HTML page is shown on the browser but the attached images are not shown. The images are also there in the server directory and are refered in the HTML file correctly. When i directly open the HTML file then the images are shown correctly.
Can anyone suggest wat's wrong there.
The code i m using is
ServletOutputStream out=response.getOutputStream();
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                         response.setContentType("application/pdf");
                    else
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                         response.setContentType("text/html");
String file = ReportingConstants.URL_GENERATEDREPORTS+reportPath+itemName;
// file : HTML file absolute path as string.
                    URL url=new URL(file);
                    BufferedInputStream bis=new BufferedInputStream(url.openStream());
                    BufferedOutputStream bos=new BufferedOutputStream(out);
                    byte[] buff = new byte[2048];
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You have to undertsand how the browser handles images and other resources in a HTML page. In the HTML there is an image tag that has a url to an image which can be a reletive url or an absolute url (starts with a "/").
If the url is a relative url the browser interprets the url as being relative to the url currently displayed in the address field discarding the last element of the url . So if the url in the address bar is http://www.myserver.com/myapp/mypage.html and the relative url is images/myimage.jpg, the browser will submit a request to the server for http://www.myserver.com/myapp/images/myimage.jpg
Now let's say that you are call mypage.html from a servlet that has the url http://www.myserver.com/myapp/servlets/myservlet. Then when the browser tries to retrieve myimage.jpg it will use the url http://www.myserver.com/myapp/servlets/myservlet/images/myimage.jpg and since this is incorrect it will not be able to display the images.
One solution to this is to change all of the image urls to absolute urls. That is the start with a slash where the slash represents the start of the url after the application domain name. For example you used an absolute url for myimage.jpg it would look like /images.myimage.jpg and when accessing the page through the servlet url (http://www.myserver.com/myapp/servlets/myservlet) the browser will discard everything after http://www.myserver.com/myapp and look for the image at http://www.myserver.com/myapp/images/myimage.jpg which is the correct url.
A second solution is to use the HTML BASE tag which tells the browser not to interpret the image tag urls (and other resourses) using the current url in the address bar but to use the url supplied in the HTML BASE tag. The browser will still perform the same process for relative urls but now relative to the BASE tag url. Since the BASE tag url will be the same every time the page is accesssed the images should be correctly accessed no matter how the page is accessed (eg directly, using RequestDistpatcher or via your servlet)

Opening a text file in server from an applet running in the client

Friends,
I want to open a text file in the server(The server machine uses tomcat 4.1.12 server)from an applet running in the client machine;
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Plese help me to get around this.

You can open the textfile on the servlet and then send the information to the client (applet) as stirngs. The must then applet convert the stirngs into some object or simply display the information in someway. But then the text file that you are opening must be stored in some relevant tomcat directory e.g. on the server. If you want to open a file on the clients computer, you get into signed applets.

I deleted a message from iCloud mail. It says it is saved on the server for 1 month. Can I get to it?

I deleted a message from my iCloud mail (and emptied the trash) on my MAC that I didn't mean to. In my iCloud IMAP settings it says that deleted mail will be saved on the server for 1 month. How do I get to it?

Go to http://www.icloud.com and go to the Mail page there. Open the Trash mailbox. If the message is there you can move it out. If it isn't, then I'm afraid it's gone. The 'delete after x days' setting in the Mail application is over-ridden by the automatic deletion in the iCloud server - I have an idea that's 7 days but I'm not sure.

Communicating with server from an Applet.

Hi, i've written a tetris game in an applet.
But i want some way of saving the high scores of everyone on the server.
Is they anyway to communicate the final score back to the server from the applet?
I tried saving the scores to a text file but apparently the file would appear on the client.

Here is some code that you may find useful. This works for the more flexible serialized object approach. For a query string, you would simply do a post on the servlet with the appropriate URL that includes the query string. However, I have found the following serialized object approach to be more convenient.
import java.net.*;
import java.io.*;
This function sends an "AppletRequest" object to the servlet and gets the response back from the servlet in the form of a "ServletResponse" object.
protected static ServletResponse talkToServlet(AppletRequest aReq) {
ServletResponse sr = new ServletResponse();
try {
// Replace the following URL by the URL of your servlet
servletURL = new URL("http://myservleturl/");
servletConn = servletURL.openConnection();
servletConn.setUseCaches (false);
servletConn.setRequestProperty("Content-Type",
"application/octet-stream");
servletConn.setDoInput(true);
servletConn.setDoOutput(true);
} catch (MalformedURLException ex) {
System.out.println("MalformedURLException"+ex.getMessage());
} catch (IOException ex) {
System.out.println("IOException"+ex.getMessage());
} catch (Exception ex) {
System.out.println ("GeneralException: " + ex.getMessage());
try {
outputToServlet = new ObjectOutputStream(servletConn.getOutputStream());
outputToServlet.writeObject(aReq);
outputToServlet.flush();
outputToServlet.close();
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try {
try{
inputFrServlet = new ObjectInputStream(servletConn.getInputStream());
sr = (ServletResponse) inputFrServlet.readObject();
inputFrServlet.close();
} catch (EOFException ex) {
System.out.println("EOFException: "+ex.getMessage());
} catch (IOException e) {
System.out.println("IOException: "+e.getMessage());
e.printStackTrace();
} catch (ClassNotFoundException e) {
System.out.println("ClassNotFoundException: "+e.getMessage());
} catch (Exception e) {
System.out.println("GeneralException2: "+e.getMessage());
return(sr);

The document could not be saved. The server said: "The operation failed because an unexpected error occurred. (Result code 0×80020005)" Please ensure you have completed all required properties with the correct information and try again.

I am having problems saving documents back to SharePoint when any of the document properties (metadata columns) are set to be "managed metadata". The check-in/save fails with error:
The document could not be saved. The server said:
“The operation failed because an unexpected error occurred. (Result code 0×80020005)”
Please ensure you have completed all required properties with the correct information and try again.
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Adobe Acrobat version 10.1.13
SharePoint 2010

Hi quodd,,
We are sorry for the issue being faced by you. I need some information from you so that I take further steps:
1. Which Adobe product are you using Acrobat or Adobe reader- what is the complete version?
2. How are you opening and saving the PDF, the exact workflow?
Are you doing it from within Adobe Reader/Acrobat application or opening it from browser, doing changes and saving it using browser itself.
3. Can you try to save a PDF to library with Custom template and managed metadata columns using browser directly.
4. Please verify that columns name do not contain spaces or some other special characters.
Can you try to save PDF to library with Custom template and just a single managed metadata column with a simple name
Thanks,
Nikhil Gupta

Create a new file on server from an applet

Hello!
I 'm trying to create a text file on server from an applet, i have permissions to write on server and i'm running in apache, my code is
public void write () {
try{
URL url = new URL("http://localhost/bnm/hello.txt");
URLConnection urlcon = url.openConnection();
urlcon.setDoOutput(true);
urlcon.setUseCaches(true);
PrintWriter pt = new PrintWriter
(new OutputStreamWriter (urlcon.getOutputStream()));
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pt.flush();
catch(Exception e)
e.printStackTrace();
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Ah! in other example, i can read a file of server fro m the applet, the problem is to write
Anybody, knows the matter??
Excuse my poor english :P
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I had the same needs and didn't know whether this was possible, due to applets security restriction. So I searched the Web and found some contradictory information. I will explain what I think is the situation, to give you an answer, but also so that other people can tell me whether I understood correctly.
1) Unless you sign it, an applet cannot write files directly, either client-side or server-side. All what it can do to access a file server-side (except .jar files ?) is opening a http connection, which allows only to retrieve data. When I try to run code such as yours, I get this exception :
java.net.UnknownServiceException: protocol doesn't support output
     at java.net.URLConnection.getOutputStream(URLConnection.java:679)
2) As Ares_Man points out, what it can do is opening a http connection not directly with the file you want, but with a server-side script (JSP, PHP, CGI,...) which will be allowed to write files on the server. You can use POST or GET parameters to pass to the script what you are going to write.
This simple code worked for me (it executed the script toto.php):
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               e.printStackTrace();
Probably it's a good idea to do a URLConnection.setCache(false) though, to be sure that the script toto.php will be executed.
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          Hi
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          >
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          >>
          >>The same code is working if the jsp placd under defaultwebApp directory
          >>and not
          >>working if i create a war and deploy the same.
          >>
          >>I am using weblogic server 7.0 trail version.I am setting the context
          >>path also.
          >>
          >>Can any help me in this regard.
          >>
          >>Thank And Regards
          >>
          >>Anand Mohan
          >

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Saving to the Server from an Applet

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