How to Post imageData(video) from Jsp to Spring MVC? -

the code use image data , post this, , imagedata uint8clampedarray , video stream. got error msg every time when try submit it. msg "uncaught typeerror: illegal invocation"

var imagedata = ctx.getimagedata(0, 0, width, height); $.ajax({     url: '/blog/saveblog',     type: 'post',     data:{videodata: videodata},     success: function (result) {         loadmine();     } }); 

the server built in spring mvc, wrote controller handle post request, never in.

can me on problem? thanks.!

late answer, if can someone...

here 1 way post canvas data server

    function(canvas) {         $.post('/blog/saveblog',              {                 image: canvas.todataurl()               },               function(data) {...});       } 

and way manage on server side using spring mvc

    @requestmapping(value = "/saveblog")     @responsebody     public void saveblog(@requestparam(value="image", required=false) string imagebase64) throws ioexception         long = calendar.getinstance().gettimeinmillis();         byte[] bytes = imagebase64.replaceall("data:image/.+;base64,", "").getbytes();          file image= new file("./folder", "image.jpeg");          if(!image.exists()){             files.createparentdirs(image);         }         files.write(decoder.decode(bytes), image);     } 

this works fine images, think should work video (need change line imagebase64.replaceall("data:image/.+;base64,", ""))