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.
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.
来源:https://stackoverflow.com/questions/9051265/java-apache-http-client-usage-examples-showing-use-of-cookies-and-extracting-r