Problem with displaying request headers with apache httpclient 4

Question

I am trying to get the headers sent by HttpMethod using HttpClient 4, but without any success ...

here is my code:

HttpClient httpClient = new DefaultHttpClient();
HttpParams httpParams = httpClient.getParams();
HttpGet httpGet = new HttpGet("http://www.google.fr");

HttpResponse response = httpClient.execute(httpGet);

log.info("*** Request headers ***");
Header[] requestHeaders = httpGet.getAllHeaders();
for(Header header : requestHeaders) {
    log.info(header.toString());
}
log.info("***********************");


log.info("*** reponse ***");
log.info(response.getStatusLine());
Header[] headers = response.getAllHeaders();
for(Header header : headers) {
    log.info(header.toString());
}

but the result:

00:27:57,368 INFO   - *** Request headers ***

00:27:57,368 INFO   - ***********************

00:27:57,368 INFO   - *** reponse ***

00:27:57,368 INFO   - HTTP/1.1 200 OK

00:27:57,368 INFO   - Date: Sun, 15 Aug 2010 22:28:09 GMT

00:27:57,368 INFO   - Expires: -1

00:27:57,368 INFO   - Cache-Control: private, max-age=0

00:27:57,368 INFO   - Content-Type: text/html; charset=ISO-8859-1

00:27:57,368 INFO   - Set-Cookie: 

[..]

AKA response headers are good, but not a request. (Same result if I move the log request header block before the execute statement).

(and NO, I don't want to just see them, so setting the log level for debugging is not acceptable)

Anyone can help?

Answer 1

It will display only the request headers that you set yourself.

, HttpClient, HttpClient " Commons" . . .

, Fiddler.

Answer 2

, , HTTPclient, HttpCoreContext. .

HttpClient client = HttpClients.createDefault();
HttpCoreContext localContext = new HttpCoreContext();
HttpResponse response = client.execute(request,localContext);

Header[] headers = localContext.getRequest().getAllHeaders();
for (Header header : headers) {
   System.out.println(header.toString());
}

Answer 3

, , 2010 , , - ( ) .

// So we can get all the headers (not just the ones we explicitly set).        
httpClient.addRequestInterceptor(new HttpRequestInterceptor() {

    public void process(
            final HttpRequest request,
            final HttpContext context) 
            throws HttpException, IOException {

        // Start Debug
        System.out.println("*** Request headers ***");
        Header[] requestHeaders = request.getAllHeaders();
        for(Header header : requestHeaders) {
            System.out.println(header.toString());
        }
        System.out.println("***********************");
        // End Debug
    }

});

( ).

*** Request headers ***
Accept: application/xml
Authorization: Basic bmV3Omd1ZXN0
Content-Length: 772
Content-Type: application/xml; charset=UTF-8
Host: rest3api.sifassociation.org:80
Connection: Keep-Alive
User-Agent: Apache-HttpClient/4.2.1 (java 1.5)
***********************

, .