I'm developing an application with jquerymobile and Spring MVC. I'm getting an image in a controller as Inputstream and the next step is to pass this image to Javascript for show in a dialog with JqueryMobile.
How can I pass this java Inpustream image to javascript?
PS. The controller is called throught jquerymobile ajax so i have onSuccess method waiting to make something with returned data from controller.
Why not load that image from java using Jquery on a div?
var url = 'myimage.com/image_java_url?'+dataToSend
$('#myDiv').load(url, function(response, status, xhr) {
if (status = "success"){
$('#myDiv').html(response);
}
});
I assume you are creating a REST-endpoint to recieve an image. If so, you could make your Spring-endpoint take HttpServletResponse as an argument and stream the image out to the servlet outputstream. Wrap the inputstream in a BufferedInputStream for to let it handle the buffering for you.
To get hold of the HttpServletResponse just add it as an argument to your method,
@RequestMapping(value = "/something")
public void helloWorld(HttpServletResponse response) {
InputStream imageStream = .....;
OutputStream oSteam = response.getOutputStream();
InputStream stream = new BufferedInputStream(imageStream );
int b = -1;
while((b = stream.read())> -1){
oSteam.write(b);
}
I haven't had much experience with Spring, but I would use the javax.ws.rs.core.Reponse class in Java EE. This will allow you to construct a http response using Response.ResponseBuilder, wrapping your InputStream.
i.e.
Response.ok(inputStream, MEDIA_TYPE.APPLICATION_OCTET_STREAM).build();
