Send HTTP GET request with header

Question

From my Android app I want to request a URL with GET parameters and read the response   In the request I must add a x-zip header   The URL is something like  http   example com getmethod aspx id 111 amp method Test   Can some one provide me code for that   Two things are important  that it is a GET request and contains the x-zip header    EDIT   try       HttpClient client   new DefaultHttpClient          String getURL    http   example com getmethod aspx id 111 amp method Test       HttpGet get   new HttpGet getURL       get setHeader  Content-Type    application x-zip        HttpResponse responseGet   client execute get         HttpEntity resEntityGet   responseGet getEntity          if  resEntityGet    null                do something with the response         Log i  GET   EntityUtils toString resEntityGet            catch  Exception e        e printStackTrace        I try with this code but I get  code with  net error  Object reference not set to an instance of an object    I think but I m not sure this if for x-zip header  is header in my code ok

User · Answer

You do it exactly as you showed with this line:

get.setHeader("Content-Type", "application/x-zip");

So your header is fine and the problem is some other input to the web service. You'll want to debug that on the server side.

User · Answer

Here s a code excerpt we re using in our app to set request headers   You ll note we set  the CONTENT TYPE header only on a POST or PUT  but the general method of adding headers  via a request interceptor  is used for GET as well          HTTP request types     public static final int POST TYPE     1  public static final int GET TYPE      2  public static final int PUT TYPE      3  public static final int DELETE TYPE   4          HTTP request header constants     public static final String CONTENT TYPE            Content-Type   public static final String ACCEPT ENCODING         Accept-Encoding   public static final String CONTENT ENCODING        Content-Encoding   public static final String ENCODING GZIP           gzip   public static final String MIME FORM ENCODED       application x-www-form-urlencoded   public static final String MIME TEXT PLAIN         text plain    private InputStream performRequest final String contentType  final String url  final String user  final String pass      final Map lt String  String gt  headers  final Map lt String  String gt  params  final int requestType               throws IOException        DefaultHttpClient client   HTTPClientFactory newClient         client getParams   setParameter HttpProtocolParams USER AGENT  mUserAgent           add user and pass to client credentials if present     if   user    null   amp  amp   pass    null             client getCredentialsProvider   setCredentials AuthScope ANY  new UsernamePasswordCredentials user  pass                  process headers using request interceptor     final Map lt String  String gt  sendHeaders   new HashMap lt String  String gt         if   headers    null   amp  amp   headers size    gt  0             sendHeaders putAll headers             if  requestType    HTTPRequestHelper POST TYPE    requestType    HTTPRequestHelper PUT TYPE             sendHeaders put HTTPRequestHelper CONTENT TYPE  contentType                request gzip encoding for response     sendHeaders put HTTPRequestHelper ACCEPT ENCODING  HTTPRequestHelper ENCODING GZIP        if  sendHeaders size    gt  0            client addRequestInterceptor new HttpRequestInterceptor                  public void process final HttpRequest request  final HttpContext context  throws HttpException                  IOException                   for  String key   sendHeaders keySet                          if   request containsHeader key                             request addHeader key  sendHeaders get key                                                                                        code omitted

[java] Send HTTP GET request with header

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