Try to access .Net webservice using HttpClient

Question

Below is the example in .NET C# language to get resource list for the user

Prepare HttpRequest with proper HEADER details

    HttpClient client = new HttpClient();
    // Authorization header value format is "VST {tokenvalue}"
    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("VST", securityToken); 
    client.DefaultRequestHeaders.Add("ContentType", "text/json");
    client.DefaultRequestHeaders.Add("Accept", "text/json");*

Need to write the similar code in Java, I have written the below code in java to access the web-service.

Getting error:

HTTP Error 400.

The request has an invalid header name.

HttpGet request = new HttpGet(getRequestUrl(baseUrl,   VideologyConstants.GET_CUSTOMERS_API_URL));
request.setHeader(HttpHeaders.AUTHORIZATION, "VST {" + securityToken + "}");

have you seen that in Java your security header token will be VST { token }? In C# at least I can't see the "{" chars maybe is that? — acostela, Oct 07 '15 at 12:35
Try to debug your full request, because the only header is that. It must be a little error there — acostela, Oct 07 '15 at 12:38
Error: Bad Request - Invalid Header.. new AuthenticationHeaderValue("VST", securityToken);--> .NET C# Code. Need to write similar line of code in java. — VIKASH SINHA, Oct 07 '15 at 13:02
I tried it but getting the below error: {"Message":"Authorization has been denied for this request."} — VIKASH SINHA, Oct 07 '15 at 13:11
now your header is correct. Just debug and be sure that the token format is correct ;) — acostela, Oct 07 '15 at 13:18

score 2 · Accepted Answer · edited Oct 08 '15 at 13:19

2

client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("VST", securityToken);

Will produce this header value

Authorization: VST {securityToken}

The way that you can add that header in java is.

httpGet.setHeader("Authorization","VST "+token)

Here you can check the java API http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/index.html

edited Oct 08 '15 at 13:19

VIKASH SINHA

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answered Oct 07 '15 at 13:19

acostela

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Tried and setting the correct header in the HttpGet Method but getting the same error. .Net C# code is using AuthenticationHeaderValue class to set security token.. may be it works in different way. – VIKASH SINHA Oct 07 '15 at 13:35
http://stackoverflow.com/questions/19039450/adding-authorization-to-the-headers. it is working now.. Thanks acostela httpGet.setHeader("Authorization","VST "+token); – VIKASH SINHA Oct 08 '15 at 07:20
oh you're welcome. I will edit the answer so it fits with your final solution – acostela Oct 08 '15 at 07:27

Try to access .Net webservice using HttpClient

1 Answers1