CODEWITHSUNDEEP
javagwtservletsgxt
monica bubna
monica bubna

Reputation: 626

retrieve the image through image src url in gwt

I am working on GWT and the following is my code: 

  if(rs1.next()){
    int len = imgLen.length();
    byte [] rb = new byte[len];

    InputStream readImg = rs1.getBinaryStream(1);

    int index=readImg.read(rb, 0, len);
    System.out.println("hello");
    System.out.println("index"+index);
    //st.close();
    response.reset();
    response.setContentType("image/png");

    System.out.println("response"+response);

    int len3 = 0;

    while ((len = readImg.read(rb)) != -1) {
              response.getOutputStream().write(rb,0,len);
              System.out.println( response);
    }

I use this code to retrieve the image from mySQL database at server side. Its response at client side is "IMG src="http://some path:8888/m/upload" url. So does anybody know how to retrieve the image at client side?

Upvotes: 0

Views: 2197

Answers (2)

Tony BenBrahim
Tony BenBrahim

Reputation: 7300

The question is not GWT specific per say. It looks like you have images stored in your datase and you want to make them available to a web page (in your case the client side of your GWT application).

  1. create a servlet that accepts the image id or whatever as a parameter, reads the image from the database and writes it out to the response.getOutputStream (it looks like you have that code already, just put it in a standalone servlet).

  2. give a path to your image servlet in web.xml for example servlet mapping is /db-images

  3. your images stored in the database are now accessible at http://your-server/your-app-context/db-images?id=123

Upvotes: 2

code-gijoe
code-gijoe

Reputation: 7244

Well you could be a little more precise at asking your question. But from what I understand you're trying to display an image from a URL? Maybe this will help.

http://google-web-toolkit.googlecode.com/svn/javadoc/1.5/com/google/gwt/user/client/ui/Image.html

Upvotes: 0

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