Is there any simple http response parser for Java?

Question

Is there any simple http response parser implementation? The idea is to put in the complete response as one big string and be able to retrieve stuff like statuscode, body etc. through the interface.

The requests/responses are not sent directly over TCP/IP so there is no need for anything but the core rfc 2616 parsing implementation.

score 12 · Accepted Answer · edited Jun 20 '20 at 09:12

12

If you use for instance Apache HttpClient you will get a java response object which you can use to extract headers or the message body. Consider the following sample

HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(new HttpGet("http://www.foo.com/"));
Header[] headers = response.getAllHeaders();
InputStream responseBody = response.getEntity().getContent();

If you only want to parse a reponse, perhaps the HttpMessageParser will be useful:

Abstract message parser intended to build HTTP messages from an arbitrary data source.

edited Jun 20 '20 at 09:12

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answered Feb 13 '12 at 13:14

Johan Sjöberg

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IMHO the OP wants to parse the raw HTTP response that he has in a String (maybe from some dump). – Tomasz Nurkiewicz Feb 13 '12 at 13:19
Thomasz is right. I'm working with raw responses... there are no URIs and HttpGet won't work. – mibollma Feb 13 '12 at 14:18
@mibollma, see the second suggestion using `HttpMessageParser` – Johan Sjöberg Feb 13 '12 at 14:30
That looks much better. Thanks alot. – mibollma Feb 13 '12 at 15:54

score 0 · Answer 2 · answered Sep 18 '17 at 13:01

I recomend http-request built on apache http api.

HttpRequest<String> httpRequest = HttpRequestBuilder.createGet(someUri, String.class)
    .responseDeserializer(ResponseDeserializer.ignorableDeserializer())
    .build();

public void send(){
   ResponseHandler<String> responseHandler = httpRequest.execute();
   String responseBody = responseHandler.get();
   int statusCode = responseHandler.getStatusCode();
}

I higly recomend read documentation before use.

Is there any simple http response parser for Java?

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