Flex urlloader upload file

I found interesting class - UploadPostHelper in this article. Next I merged that example with my old code — browse for file and changed the method from FileReference.

Server is java servlet using apache commons FileUpload — saves file to temp folder and sends XML response — all form items from post request and file uploaded — name and absolute path. Adobe has changed security in flash player 10, it is impossible to send files in background probably all requests now needs user interaction. It has to be in some user-action click… event handler, so I have two buttons, one for browse for a file, one for upload.

Using just method that handles Event. Here is my Client code UploadTest. POST; urlRequest. File; import java. IOException; import java.

UnsupportedEncodingException; import java. ServletOutputStream; import javax. HttpServlet; import javax. HttpServletRequest; import javax. Series Developer's library. Online Available online. Safari Books Online Full view. Report a connection problem. More options. Find it at other libraries via WorldCat Limited preview. Contributor Wanja, Daniel. Adobe Flex enables the rapid development of rich and engaging user experiences.

Ruby on Rails dramatically simplifies the development of database-driven web applications. Now there's a book that shows how to use the newest versions of both frameworks together to create state-of-the-art Rich Internet Applications RIAs. Flex on Rails begins with the absolute essentials: setting up your environment for Flex and Rails, passing data with XML, and integrating Flex front-ends with Rails back-ends.

Then, using practical, easy-to-understand code examples, the authors take you from the basics to advanced topics only discussed in this book. Then you can register the listener again with the new priority level.

Keep in mind that after the listener is registered, subsequent calls to addEventListener with a different type or useCapture value result in the creation of a separate listener registration. For example, if you first register a listener with useCapture set to true , it listens only during the capture phase.

If you call addEventListener again using the same listener object, but with useCapture set to false , you have two separate listeners: one that listens during the capture phase and another that listens during the target and bubbling phases.

You cannot register an event listener for only the target phase or the bubbling phase. Those phases are coupled during registration because bubbling applies only to the ancestors of the target node. If you no longer need an event listener, remove it by calling removeEventListener , or memory problems could result.

Event listeners are not automatically removed from memory because the garbage collector does not remove the listener as long as the dispatching object exists unless the useWeakReference parameter is set to true. Copying an EventDispatcher instance does not copy the event listeners attached to it.

If your newly created node needs an event listener, you must attach the listener after creating the node. However, if you move an EventDispatcher instance, the event listeners attached to it move along with it. If the event listener is being registered on a node while an event is being processed on this node, the event listener is not triggered during the current phase but can be triggered during a later phase in the event flow, such as the bubbling phase.

If an event listener is removed from a node while an event is being processed on the node, it is still triggered by the current actions. After it is removed, the event listener is never invoked again unless registered again for future processing.

Parameters type : String — The type of event. This function must accept an Event object as its only parameter and must return nothing , as this example shows: Copy function evt:Event :void The function can have any name. Class-level member functions are not subject to garbage collection, so you can set useWeakReference to true for class-level member functions without subjecting them to garbage collection.

If you set useWeakReference to true for a listener that is a nested inner function, the function will be garbage-collected and no longer persistent. If you create references to the inner function save it in another variable then it is not garbage-collected and stays persistent. Closes the load operation in progress.

Any load operation in progress is immediately terminated. If no URL is currently being streamed, an invalid stream error is thrown. Sends and loads data from the specified URL. The data can be received as text, raw binary data, or URL-encoded variables, depending on the value you set for the dataFormat property.

Note that the default value of the dataFormat property is text. A SWF file in the local-with-filesystem sandbox may not load data from, or provide data to, a resource that is in the network sandbox. For example, a SWF file at www. To load data from a different domain, place a URL policy file on the server hosting the data. You cannot connect to commonly reserved ports.

If the syntax appears to be invalid, the POST operation is subject to the security rules applied to uploads. The file is loaded in a try Here we catch the SecurityError errors.

In the loaderCompleteHandler method, a try The readNodes method then recursively goes through all the elements in the nodes of the XML document and appends the xmlTextField text field with a list of the first attributes of all the elements. Dispatched after all the received data is decoded and placed in the data property of the URLLoader object.

The received data may be accessed once this event has been dispatched. Dispatched if a call to URLLoader. For content running in Flash Player, this event is only dispatched if the current Flash Player environment is able to detect and return the status code for the request. Some browser environments may not be able to provide this information. Note that the httpStatus event if any is sent before and in addition to any complete or error event. Dispatched when the download operation commences following a call to the URLLoader.

Dispatched when data is received as the download operation progresses. Note that with a URLLoader object, it is not possible to access the data until it has been received completely.