Android development 14th ---- video file upload in Android

Video file upload protocol analysis in Android

L run the web application on the server,

L upload a video file, capture data packets with httpwatch, and explain the following:

 

POST/videoweb/video/manage. do HTTP/1.1   Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/vnd. ms-excel, application/vnd. ms-powerpoint, application/msword ,*/*   Referer: http: // 192.168.1.102: 8080/videoweb/   Accept-Language: zh-cn, en-GB; q = 0.5   User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0;. net clr 2.0.50727)   Content-Type: multipart/form-data; boundary = --------------------------- 7db4e3237099a   Accept-Encoding: gzip, deflate   Host: 192.168.1.102: 8080   Content-Length: 3224599   Connection: Keep-Alive   Cache-Control: no-cache   Cookie: JSESSIONID = D677BD29B65CD7D9A973767BEB945CCF       ----------------------------- 7db4e3237099a   Content-Disposition: form-data; name = "method"       Save   ----------------------------- 7db4e3237099a   Content-Disposition: form-data; name = "name"       YMGM   ----------------------------- 7db4e3237099a   Content-Disposition: form-data; name = "timelength"       1   ----------------------------- 7db4e3237099a   Content-Disposition: form-data; name = "video"; filename = "F: \ 2011_Android \ 14 \ YMGM. rm"   Content-Type: application/octet-stream       ...   ----------------------------- 7dbcb1c000062 --

 

 

 

Note: explain in detail how to use the split line, including the definition of the split line.

Definition:

Boundary = --------------------------- 7db4e3237099a

Definition and use of split lines

--------------------------- 7db4e3237099a // Definition   ----------------------------- 7db4e3237099a // entity parameter split line. Two more "-" parameters are added before the split line.   ----------------------------- 7db4e3237099a -- // The entity parameter end split line, followed by two more "-"

 

Description of the type of the uploaded file (see the dictionary in the tomcat \ conf \ web. xml file)

 

The following describes the basic information about the object to be uploaded in the object content:

 

Content-Disposition: form-data; name = "video"; filename = "F: \ 2011_Android \ 14 \ YMGM. rm"

Content-Type: application/octet-stream

 

 

Note that the number of carriage returns and line breaks is clear.

 

 

Implementation of client applications

1. Description: FormFile

2. ethttprequester

 

Copy the tool class used above to the Project

 

3. Specific operations

 

Add permission

<Uses-permission android: name ="Android. permission. INTERNET"/>   <! -- Create and delete file permissions in SDCard -->   <Uses-permission android: name ="Android. permission. MOUNT_UNMOUNT_FILESYSTEMS"/>   <! -- Write data to SDCard -->   <Uses-permission android: name ="Android. permission. WRITE_EXTERNAL_STORAGE"/>

 

 

Layout: Added two UI components.

<Textview   Android: layout_width ="Fill_parent"   Android: layout_height ="Wrap_content"   Android: text ="@ String/videoFile"/>       <Edittext   Android: Id ="@ + Id/videoFileEt"   Android: layout_width ="Fill_parent"   Android: layout_height ="Wrap_content"   Android: text ="YMGM. rm"/>

 

VideoService: Added the saveVideo method.

Public static booleanSaveVideo (String name, String timelength,   File file)ThrowsException {   String path =   "Http: // 192.168.1.102: 8080/videoweb/video/manage. do ";   Map <String, String> params =NewHashMap <String, String> ();   Params.Put("Name", name );   Params. put ("timelength", timelength );   Params. put ("method", "save ");   FormFile formfile =NewFormFile (file. getName (), file, "video", "application/octet-stream ");   ReturnSocketHttpRequester.Post(Path, params, formfile );   }

 

Activity

PackageCn. class3g. video;   ...   Public classVideoClientActivityExtendsActivityImplementsOnClickListener {       EditText nameEt, timeLengthEt, fileEt;   Button saveBtn;       Protected voidOnCreate (Bundle savedInstanceState ){   Super. OnCreate (savedInstanceState );   This. SetContentView (R. layout.Save_video_info);   FindViews ();   }       Private voidFindViews (){   NameEt = (EditText)This. FindViewById (R. id.Nameet);   TimeLengthEt = (EditText)This. FindViewById (R. id.Timelengthet);   FileEt = (EditText)This. FindViewById (R. id.Videofileet);   SaveBtn = (Button)This. Findviewbyid (R. Id.Savebtn);       Savebtn. setonclicklistener (This);   }       Public voidOnclick (view v ){       String videoname = nameet. gettext (). tostring ();   String timelength = timelengthet. gettext (). tostring ();   String videofile = fileet. gettext (). tostring ();       Try{   File file =NewFile (Environment.Getexternalstoragedirectory(),   VideoFile );   If(VideoService.Savevideo(VideoName, timeLength, file )){   Toast.Maketext(This, R. string.Success, 1). show ();   }Else{   Toast.Maketext(This, R. String.Error, 1). Show ();   }       }Catch(Exception e ){   Log.E("Tag", E. tostring ());   Toast.Maketext(This, R. String.Error, Toast.Length_short). Show ();   }   }   }

 

Test:

First, drag the video files used for testing into the sd card of the simulator.

Run the program, execute the upload, and check whether the server has uploaded files.