Flex SDK 3.5 - Check file mimetype

Posted by Fernando on Stack Overflow See other posts from Stack Overflow or by Fernando
Published on 2010-04-19T17:16:49Z Indexed on 2010/04/20 20:13 UTC
Read the original article Hit count: 250

Filed under:

flex

|

mime-type

|

image

Is there a way to get a file's mimetype in Flex SDK 3.5 without using its extension?

I need to validate if an uploaded file is of a certain kind. This is for images, or documents (PDF, ODT, etc.)

All the solutions I've found are by checking its extension. What if I rename a .odt file as a .jpg? Then I can upload it as an image...

I should add, we are using an AIR desktop client and a Java EE server. File checking is solved on the Java side, but the idea is not to go to the server, validate the file so if it's not valid, there's no network traffic at all.

© Stack Overflow or respective owner

Related posts about flex

Could not resolve <fx:Script> to a component implementation.

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, i created project with flexmojos maven archtype..i used flexmojos:flexbuilder and compile/run with FlashBuilder 4 everything is okay but when i try to compile project with flexmojos i got following error: [ERROR] Z:....\src\main\flex\Main.mxml:[6,-1] Could not resolve < fx:Script to… >>> More
Flex builder3 is not generating html wrapper when targeting flex 4 sdk

as seen on Stack Overflow - Search for 'Stack Overflow'
In Flex builder 3 when I create a new flex application targeting the flex 4 sdk, it wont generate a html wrapper file. I have hunted around the web for answers, but no success. I have made sure the box is checked in the project properties to generate html wrapper. The only workaround is to target… >>> More
Flex datagrids - Alternatives in non-flex/flash environment ?

as seen on Stack Overflow - Search for 'Stack Overflow'
I did some work that used Flex datagrids previously. It was smooth for the users and developers alike. In my current project, I have to implement the same grids but not using Flex / Flash. I have taken a look at extJS and YUI but they don't seem to measure up. Are there other packages I should… >>> More
Using flex 4 sdk in flex builder 3

as seen on Stack Overflow - Search for 'Stack Overflow'
This question may be an absolute crap. Can i use the flex 4 sdk in flex builder 3? i have a licensed version of flex builder 3 professional. so if i need to use flex 4 sdk in it, do i need to buy flash builder? cant i get all the new components in flex builder 3? Regards, PK >>> More
jetty-blazeds and maven (com.adobe.flex#flex-messaging-core missing)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I want to setup jetty with jetty-blazeds extension. Everything looks fine but when I run maven to get the dependencies, I get: UNRESOLVED DEPENDENCIES com.adobe.flex#flex-messaging-core;3.2.0: not found com.adobe.flex#flex-messaging-common;3.2.0: not found Does anyone know a maven repository… >>> More

Related posts about mime-type

Asp.Net MVC2 RenderAction changes page mime type?

as seen on Stack Overflow - Search for 'Stack Overflow'
It appears that calling Html.RenderAction in Asp.Net MVC2 apps can alter the mime type of the page if the child action's type is different than the parent action's. The code below (testing in MVC2 RTM), which seems sensible to me, will return a result of type application/json when calling Home/Index… >>> More
Debug message "Resource interpreted as other but transferred with MIME type application/javascript"

as seen on Stack Overflow - Search for 'Stack Overflow'
OK, I understand what the messages means, but I'm really not sure what's causing it. I'm using Safari and the Web Inspector on Mac OS X, by the way. I've got the following in my document head: <script src="http://local.url/a/js/jquery.js" type="text/javascript"></script> <script src="http://local… >>> More
Determining a Local File's Mime Type (Content-type) With PHP

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to determine a file's mime type. I've tried a few methods, but haven't come up with anything that gives consistent output. I've tried $mime = mime_content_type($file) and $mime = exec('file -bi ' . $file). I am serving up images, CSS, JavaScript, and images. >>> More
Compressing a web service response for jQuery

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm attempting to gzip a JSON response from an ASMX web service to be consumed on the client-side by jQuery. My web.config already has httpCompression set like so: (I'm using IIS 7) <httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files" staticCompressionDisableCpuUsage="90"… >>> More
How do I compress a Json result from ASP.NET MVC with IIS 7.5

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm having difficulty making IIS 7 correctly compress a Json result from ASP.NET MVC. I've enabled static and dynamic compression in IIS. I can verify with Fiddler that normal text/html and similar records are compressed. Viewing the request, the accept-encoding gzip header is present. The response… >>> More