如何使用angular js从webapi url文件夹中检索图像？

Question

i am a newbie of angular js. I am working on an existing project that using angular js for my company. I would like to know how to retrieve an image that is inside my webapi project folder using angular js. The webapi is declared as post method and i need to get the image of the user on my html view. I have created the webapi logic but when comes to angular js i am stucked and have no idea on how to do it.

Below is my web api post method

 [AcceptVerbs("POST")]
    [Route("profile/{userid}/")]
    public byte[] GetScreenshot(string userid)
    {
        var imgPath = string.Format("{0}/{1}.png", Common.AppHelper.FolderPathProfilePicture, userid);

        if (!File.Exists(imgPath))
        {
                imgPath = string.Format("{0}/no.png", Common.AppHelper.FolderPathDeviceScreenshot);
            if (!File.Exists(imgPath))
                imgPath = System.Web.Hosting.HostingEnvironment.MapPath("~/doc/thumbnail") + "\no.png";
            if (!File.Exists(imgPath))
                return null;
        }
        return File.ReadAllBytes(imgPath);
    }

this is my html page

 <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">

    <span class="glyphicon glyphicon-pencil" style="margin-top: 7px;"></span>
    <div class="pull-right" style="margin-top: 5px;">
        <span class="text-info" data-ng-bind-html="accountLoginName | to_trusted" style="font-size: 12px;"></span>


 <!-- image must show at this img src -->

                <img src="" alt="" class="img-responsive img-circle" style="height: 25px; width: 25px; border-radius: 50% !important;" />&nbsp;<span class="caret"></span>
                <ul class="dropdown-menu">


                    <li><a ng-click="popupProfilePictureControl.showPopup(loginAccount)">Change profile picture</a></li>
                    <li><a href="#">Change corporation</a></li>
                    <li><a href="#">Change password</a></li>
                    <li class="divider"></li>
                    <li><a href="#">Help</a></li>
                    <li><a href="#">Support</a></li>

                    <li class="divider"></li>
                    <li><a href="#logout">Logout</a></li>
                </ul>




    </div>
</div>

I have no idea how to use the angular js to retrieve the image from my webapi. Kindly guide me.

Answer 1

You can maybe use Base64 string of image, just replace the return value by string :

return Convert.ToBase64String(File.ReadAllBytes(imgPath));

in JS after web api result (this using jquery) :

$(".img-responsive img-circle").attr("src",dataBase64Str);