I have a watch, whose app downloads a zip file from here, processes it, and sets the new watch face. What I want to do, is intercept the response from the server, and modify the zip file, and send it to the app. I am able it intercept, using HTTP toolkit, but when I download the zip, modify it, and then "inject" it, it doesn't accept. Even if I just download it, convert it to plain text, and then inject it without modifying anything, it still returns an error. The zip converted to plaintext is different from the raw data.
How to resolve this, so that I can modify the zip, and have the app still accept it ?
P.S: I'm converting it to plain text by just changing the extension from .zip to .txt
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I want to compress a file before uploading it on server in sapui5 (image(png/jpeg/jpg)/pdf/). I want to upload a large files but i want to compress that file before uploading. Please suggest me solution ?
I think you will not be able to do it with instant upload. Instead, you should obtain the file from the change event of the file uploader (check out the change event, it has a files parameter).
You can then use that file object together with the zip.js library to create an in-memory zip and save it into e.g. a Blob. Afterwards you simply send the blob into a POST request (e.g. look at How can javascript upload a blob?). Maybe you should also provide some file-uploading specific headers (like the Slug).
I want to know if there is a 'right' way to make file uploads through custom tools.
I've seen the https://confluence.sakaiproject.org/display/BOOT/File+Uploads+with+RSF guide and it seens ok, but It stops with the file in memory with no further info. I can built a random file upload code but I want to make it Sakai-friendly (Using ContentHosting and Resources service?)
Any hints?
Thanks
The link you provided for the first part is a good example of how to get the upload initially processed. Going through RequestFilter will get your files validated, but you can use whatever method you want to upload it.
For the second part, I'd look at the ContentHosting webservice (createContentItem) for an example of how to add a file from a byte[] in memory after you've uploaded it.
These methods in ContentHostingService also accept InputStream as a parameter as of 2.7 (KNL-325), so you don't have to store the entire file in memory and can stream it as you're uploading, which you should do if the files are of any reasonable size.
After learning the basics from Apple's SimpleFTPSample project, I'm trying to append a string to the end of a .txt file on my FTP server. I successfully managed to overwrite an existing file with a custom string, but I suspect that the kCFStreamPropertyAppendToFile property that defines whether the file will be overwritten or appended is not available in iOS.
What is the recommended way to do so in iOS?
Eventually I ended up downloading the file's content using HTTP (it's much faster than FTP). Next, appending the string to the file's content and then uploading the file to the server using FTP.
This might not be the best solution, but it does solve the problem.
I've been trying to figure out how to download multiple files in a row based on the SimpleFTPSample provided by apple. Basically, I'm filtering what the user can see when they browse an ftp server, but when they select a certain file type, I want it to automatically check for another file of the same name with a different extension and if it exists, download it as well. I can't seem to get this second file to download no matter what I do. It seems strange because if I select two files in a row in my tableview, it downloads both of them just fine. Any ideas?
Edit:
It's just the SimpleFTPSample from apple.developer.com, all I did was create additional NSInputStream and NSOutputStream objects and I created a new _startReceiveFile method that gets called from _startReceive if I'm downloading a file instead of getting a directory listing. _startReceiveFile is the same code for _startReceive in the file download code for the sample project, except if the file to download has a certain extension, it also downloads an additional file with the additional stream objects. Let me know if I need to clarify more or try to put together a clear example.
Well, since there were no takers, I'll just post my solution here. I've abandoned trying to download two files at once. Instead, I just keep the ftp browsing window open and only handle the opening of the file once both files have been downloaded (user has clicked on each one separately). It's not what I wanted, but it will work, at least until I can figure out how to get two files with one request.
I have a .NET web service that takes a byte array.
I have a GWT client where I want the user to select a file using the FileUpload control and send it to the web service via HTTP stream.
The file upload control contains a method to get the file path of the selected file. How can I then get that file and convert it to a byte array?
I'm open to suggestions on how to get the file to my web service, not quite sure the Byte array will work...
If you want to convert the file in GWT, meaning in the browser. It's not possible to do in the browser using only JavaScript. FileUpload is a html input type file upload can only send the file to a server as in submit a form. For security reasons browsers can't read files from your file system. (You could use a plugin like a flash plugin to get it to work, although I have no examples at hand).
If you want to send the file content to your webservice, you need to or upload it directly to the webservice or send it to another server, convert it and from that server submit it to your webservice or write or find some (flash) plugin that does it for you.
This link maybe helpful yo you How to convert a byte array to a string, and string to a byte array with GWT
The String(byte[] bytes) constructor and String.getBytes() method are not implemented by GWT JRE emulation String class.
This is not possible purely in Javascript(yet) but could be done with flash or a signed applet. Personally what I would do is create a signed applet that would be somewhere on the page but not visible. When the user selects a file to send to the server you would get the file location from the input and send it to the applet which will load the file and return the data to Javascript as a byte array. If you are flexable with changing the web service to accept multi-part form data then you can do so and just include the file upload field as part of a form and submit the form. Now what you want to do is possible with HTML5 and a demonstration can be seen here, so if you are capable of specifying that the users be using at least a semi-HTML5 compliant browser such as FF3.6 or Chrome 6 you may be in luck.