Not able to pass parameters in HTTP POST using Java - getting 400 response status

Asked Jun 09 '16 at 15:51

Active Jun 09 '16 at 15:51

Viewed 177 times

My question might seem like possible duplicate of posts mentioned in stackoverflow, but none of those are able to resolve my issue. I am trying to pass some parameters with my URL using HTTP POST method. Following is my code :

    HttpClient httpClient = HttpClients.createDefault();
    HttpPost httpPost = new HttpPost("http://urlname/_search");

    List<NameValuePair> nameValue = new ArrayList<NameValuePair>();
    nameValue.add(new BasicNameValuePair("size", "1"));
    httpPost.setEntity(new UrlEncodedFormEntity(nameValue));


    HttpResponse httpResponse = httpClient.execute(httpPost);

I get 400 response status when running the code. I want to basically run http://urlname/_search?size=1 which runs well on browser directly as URI. I think I am doing some basic syntax error. Also, using the POST request (http://urlname/_search) without parameters is working well and yielding the expected results. Any help is appreciated :)

asked Jun 09 '16 at 15:51

Rhea

1

`_search?size=1` looks like a GET request, not a POST – OneCricketeer Jun 09 '16 at 15:53
Following is the request i want to execute. How do I form it in java program? POST http://url/_search { "size":10 } – Rhea Jun 09 '16 at 15:55
I think what you have is fine, but as I said, since that url you mentioned works in the browser, it would seem it is a GET, and not a POST. You can use [Postman](https://www.getpostman.com/docs/requests) to do some more extensive testing, if you wish – OneCricketeer Jun 09 '16 at 15:57
Though, you seem to be wanting to POST JSON, and not a UrlEncodedFormEntity – OneCricketeer Jun 09 '16 at 15:58
Try [this answer](http://stackoverflow.com/a/19912858/2308683) – OneCricketeer Jun 09 '16 at 16:00
I tested the http://url/_search with key value as (size,1) in postman as POST request. I works perfectly well. I am not sure why it is not working in Java program. – Rhea Jun 09 '16 at 16:00
Does it work without the size parameter? – pythonHelpRequired Jun 09 '16 at 16:04
Your Java code doesn't set the Content-Type header. – OneCricketeer Jun 09 '16 at 16:04
It works with JSONObject. Thank you @cricket_007 :) – Rhea Jun 09 '16 at 16:05

Not able to pass parameters in HTTP POST using Java - getting 400 response status

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