Question

I am working with apache http client (v4) in a java web app, and I am stuck in the following cases, for which I require simple usage examples–

(1) How to use Cookies with Apache HTTP client, different options available for usage of cookies

(2) Extracting charset, mimetype, response headers (as KeyValuePair) and budy (as byte[]) when the response is available in HTTPResponse object.

Answer 1

1)AS for cookies,see that exapmle:

httpcomponents-client-4.1.3\examples\org\apache\http\examples\client\ClientCustomContext.java

main code:

HttpClient httpclient = new DefaultHttpClient();
        try {
            // Create a local instance of cookie store
            CookieStore cookieStore = new BasicCookieStore();

            // Create local HTTP context
            HttpContext localContext = new BasicHttpContext();
            // Bind custom cookie store to the local context
            localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);

            HttpGet httpget = new HttpGet("http://www.google.com/");

            System.out.println("executing request " + httpget.getURI());

            // Pass local context as a parameter
            HttpResponse response = httpclient.execute(httpget, localContext);
        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }

2)You can get all you need from response and:

HttpEntity entity = response.getEntity();
entity.getContent()

Just read the examples in:
httpcomponents-client-4.1.3\examples\org\apache\http\examples\client
of httpcomponents-client-4.1.3-bin.zip which is downloaded from its website.