I was wondering if it is possible to return text from a website to the blackberry device.
So for example you have a plain text website that says "Hello World" on the page.
Is it possible to create a connection to that website and then return the contents of the page, in this case "Hello World"
I just want to save it as a string.
Should mention that i want this through an application not a blackberry browser
Of course you can. Just open an HttpConnection, which gives you an InputStream.
To convert an InputStream to a String, just do that:
byte[] response = IOUtilities.streamToBytes(stream);
String text =new String(response,"UTF-8");
Related
I'm currently writing an ASP.NET Core web API that has an action with a encrypted value as a parameter.
I'm trying to test this action and the URL won't even submit in the web browser, at first I thought it could be due to the URL being too long but I've found this answer and my URL is well below the 2000 character limit. I've changed the parameter to a trivial string ("hello") and it submits fine and runs the code. I've tried in both Edge and IE11 whilst debugging my application, in Edge nothing happens at all, in IE11 I get a message saying:
Windows cannot find 'http://localhost:5000/api/...' Check the spelling and try again
In either case the code in the application doesn't execute (I've put a breakpoint on the first line of the controllers constructor which isn't being hit).
I've included an example of one of the URLs that isn't working below, as well as the code I'm using to generate the encrypted string, it uses HttpUtility.UrlEncode to convert the encrypted byte[] array to a string.
Example URL (one that doesn't work):
http://localhost:5000/api/testcontroller/doaction/%95%d6%f8%97%84K%1f%d4%40P%f0%8d%de%27%19%ed%ffAR%9c%c6%d4%b1%83%1e%9fX%ce%9b%ca%0e%d4j%d3Rlz%89%19%96%5dL%b1%16%e9V%14u%c7W%ee%89p%3f%f7%e6d%60%13%e5%ca%00%e9%a2%27%cb%d3J%94%a6%e1%b9%9c%914%06y%7e%0bn%ce%00%e5%7d%98b%85c%fa6m%7d%f7%f1%7b8%26%22%5e%1et%5e%10%0c%05%dd%deFAR%bb%93L%b9-W%e1K%82%d8%cc8%ce%e0%0c%2b%bc%19
Action:
[HttpGet("[action]/{encrypted}")]
public string DoAction(string encrypted)
{
return "Executed";
}
Generate encrypted string:
private string GenerateEncryptedString()
{
RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider();
byte[] data = HttpUtility.UrlDecodeToBytes("AHMW9GMXQZXYL04EYBIW");
byte[] encryptedData = rsaProvider.Encrypt(data, true);
string encryptedString = HttpUtility.UrlEncode(encryptedData);
return encryptedString;
}
Not sure if I'm going wrong in my methodology for converting the encrypted data to a string but I would appreciate any feedback on how to fix this issue.
I think you should try to pass this data in the query string and not in the location (path) part of the url (some characters may be forbidden in paths as a security layer), so add a ?data= before the encoded data.
http://localhost:5000/api/testcontroller/doaction/?data=%95%d6%f8%97%84K%1f%d4%40P%f0%8d%de%27%19%ed%ffAR%9c%c6%d4%b1%83%1e%9fX%ce%9b%ca%0e%d4j%d3Rlz%89%19%96%5dL%b1%16%e9V%14u%c7W%ee%89p%3f%f7%e6d%60%13%e5%ca%00%e9%a2%27%cb%d3J%94%a6%e1%b9%9c%914%06y%7e%0bn%ce%00%e5%7d%98b%85c%fa6m%7d%f7%f1%7b8%26%22%5e%1et%5e%10%0c%05%dd%deFAR%bb%93L%b9-W%e1K%82%d8%cc8%ce%e0%0c%2b%bc%19
I need to retrieve a text file send from iphone application to my asp.net application .
HttpContext context = HttpContext.Current;
NameValueCollection nvc = context.Request.Form;
string file = nvc["text_file"];
Is it possible ?? please help.I have used this code for retrieving single variables.,It works properly..but in the case of text files is it possible ???
This will depend on how this iPhone application is sending the file. Whether it is using the multipart/form-data content type which would allow you to retrieve it by name from the context.Request.Files["text_file"] property (NOT context.Request.Form) or whether it just wrote the file contents directly into the request payload in which case you could read it from the context.Request.InputStream.
We have a webforms application that generates parametric documents. The user supplies some information, clicks a button, and our web service generates Word documents.
The service works for one document at a time but not batches. We want to add the ability to process more than one document. We now have the code below, where contactIdsForLetters is a List<int>.
foreach (int contactId in contactIdsForLetters)
{
string parameters = string.Format("ContactID~{0}", contactId);
string defaultFilename = Reporting.Utilities.CreateDefaultFileName(outputformat);
byte[] bytes = Reporting.Reports.CreateReport(selectedReportId, parameters, outputformat, out serviceCallWasSuccessful);
if (!serviceCallWasSuccessful || bytes == null)
{
Reporting.Reports.LogReportActivity(selectedReportId, string.Empty, parameters, userLogin, false);
return;
}
Reporting.Reports.LogReportActivity(selectedReportId, string.Empty, parameters, userLogin, true);
Reporting.Utilities.SendResponse(defaultFilename, bytes);
}
When running the above code, only one document is ever returned. One document is processed (the For-Each never gets to the second item in contactIdsForLetters), a dialog pops up asking to open or save the file, and after clicking open, Word opens with the document. Everything is happening like it should but we can't get the For-Each to process the second and subsequent documents.
The users want a seperate Word session for each document returned. Subsequent documents will need to open in their own Word session.
How do I loop through a List<int>, send each int to a service one-at-a-time, and open a Word session for each returned document?
Here is SendResponse() ...
public static void SendResponse(string defaultFilename, byte[] bytes)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Buffer = false;
HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.AppendHeader("Content-Disposition", string.Format("attachment; filename={0}", defaultFilename));
HttpContext.Current.Response.AppendHeader("Content-Length", bytes.Length.ToString());
HttpContext.Current.Response.BinaryWrite(bytes);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}
There should be no problem sending a List<int> to the service and having the service return List<byte[]>.
I don't know what you mean by "open a Word session". I hope you're not trying to call Word from an ASP.NET application. That's not supported, is unreliable, and doesn't work very well.
ASP.NET runs on top HTTP.
HTTP is based on a per request basis.
Each request returns a response if the browser is able to reach the server.
This response contains a stream (we can call it File in your case).
After the server flushes that stream (1st file) the request connection to the server is closed and the request life cycle ends, closing any threads related to that request.
This is why you never get to the second document.
You are going to have to deliver the documents in a compressed container like a zip file so all the documents go in a single stream. First get all the documents, package them and send the response to the client.
Hope this helps.
UPDATE: Also you might want to look at using AJAX to generate a javascript call to the server returning different links to pull the different documents. It would be like clicking on different invisible links that open different documents after the user clicks a single button or link. Using this approach is really easy to achieve what you want. You can trigger the click event for all the invisible links with javascript.
I am facing a weird problem related to content type/encoding.
Here is my Java code snippet below. This code works perfectly fine on a Windows machine where the application server is running on windows and the SMTP server for sending emails is also Windows localhost. When I deploy the same code on a Unix server, the email sent for the exact same content contains question marks (???) for special characters like non-breaking white space.
I did a lot of googling, but I did not find any solution. How can I fix this problem? The content types I tried were ISO-8859-1, UTF-8 and Windows-1252. Nothing helps.
MimeMessage message = new MimeMessage(session);
.............
Multipart mp = new MimeMultipart();
MimeBodyPart messageBody = new MimeBodyPart();
messageBody.setContent(mailMessage, "text/html;charset=Windows-1252");
messageBody.setHeader("Content-Type", "text/html;charset=Windows-1252");
// Add body to the multimedia part
mp.addBodyPart(messageBody);
message.setContent(mp);
// Send message
Transport.send(message);
Are you using the same mail server in both cases? And the same client program to view the message?
For debugging, just before the Transport.send call, add:
message.writeTo(new FileOutputStream("msg.txt"));
and then examine the msg.txt file to see if the characters are correctly encoded.
How do you create the text in the mailMessage String? If you don't create the string with the correct Unicode characters, no charset is going to make it right.
Also, you don't ever need to set the Content-Type header explicitly, remove that line.
And, instead of setContent, use:
messageBody.setText(mailMessage, "html", "utf-8");
That makes sure the Content-Type header is set correctly and the parameters (e.g., charset) are quoted correctly.
Ultimately, I had to go with a crude way of doing it. I replaced such characters with space.
mailMessage.replaceAll("[^\\x20-\\x7e]", " ");
Now, all the special characters like non-breaking space or any other character falling out of normal range, will be replaced with space. The email in this case was anyway meant for normal text.
Alright, here we go!
I am currently developing an iPhone app that will work as a security check-in system for events at a church. The main goal is to be able to search a pre existing MS SQL database for a participant, and then save them to a list on the iPhone/iPod Touch/iPad. Easy enough. One of the fields in the MS SQL database is of Image data type, and its function is to store the participant's image in binary form. I currently am not allowed to switch to varbinary(MAX).
From the iPhone, I use:
UIImage *image = [UIImage imageNamed:#"nameOfImage.jpg"];
NSData *imageData = UIImageJPEGRepresentation(image,1.0);
NSString *imageString = (NSString *)[[[NSString alloc] init] base64StringFromData:(NSData *)imageData];
You may be wondering what the base64StringFromData is. It's a category discussed here, How do I do base64 encoding on iphone-sdk?
In the category, it returns a string as NSASCIIStringEncoding. I then send that string to a Visual Basic web service using POST.
Assume in the following that I have already set up and opened my SQL connection, and initlialized a SQL Data adapter and command. So the function looks similar to this:
Public Function sendCommand(ByVal image As String) As String
Dim commandString As String
commandString = "insert into phoneApp(image) values(#image)"
Dim encoding As New System.Text.UTF8Encoding
sqlDataAdapter.InsertCommand = (commandString, sqlConnection)
sqlDataAdapter.InsertCommand.Parameters.Add(#"image", SqlDbType.Image, image.length).Value = encoding.GetBytes(image)
sqlDataAdapter.ExecuteNonQuery()
End Function
Now, finally, here's what is happening. In another function, I call Response.BinaryWrite(SqlDataReader.Item("image")). In Internet Explorer, doing this would then make the image appear in the browser. Instead, it displays the string in base64 form. Copy and pasting that string in a base64 converter off the net, and it works. So the encoding on the iPhone did encode to base64 properly.
Here's the question. Do I even need to be encoding to base64 to save into Image Data Type, or should I be focusing on learning how to encode the NSData into a different binary string?
I figured it out, and will leave my answer to anyone that stumbles across this. Good luck to you in your programming.
It actually was a lot simpler than I thought. Just use System.Convert to pass in the bytes on the InsertCommand.
sqlDataAdapter.InsertCommand = (commandString, sqlConnection)
sqlDataAdapter.InsertCommand.Parameters.Add(#"image", SqlDbType.Image, image.length).Value = System.Convert.FromBase64String(image)
sqlDataAdapter.ExecuteNonQuery()
In essence, I was getting the bytes for the encoding string but never decoding it further down the line. So I stopped the double encoding by using the Convert before it was inserted into the table.