How to make a servlet interact with the API of a website and also store the XML response?

Question

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    String text = "some text";

    response.setContentType("text/plain");  // Set content type of the response so that jQuery knows what it can expect.
    response.setCharacterEncoding("UTF-8"); // You want world domination, huh?
    response.getWriter().write(text);       // Write response body.
}

If I use this servlet , where request variable will have the url of the API of the website . Then how do I capture the response ? I would want to know what is the code to do that , and is this the right way to go about it when trying to build a JSP page that deals with interacting with an API of a website and showing data ?

score 0 · Accepted Answer · edited May 23 '17 at 12:04

You're confusing things. The HttpServletRequest is the HTTP request which the client (the webbrowser) has made to reach the servlet. The HttpServletResponse is the response which you should use to send back the result to the client (the webbrowser).

If you want to fire a HTTP request programmatically, you should use java.net.URLConnection.

URLConnection connection = new URL("http://example.com").openConnection();
InputStream input = connection.getInputStream(); // This contains the response. You need to convert this to String or some bean and then display in JSP.

How to make a servlet interact with the API of a website and also store the XML response?

1 Answers1

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