HttpClient 4クックブック

CloseableHttpClient client = HttpClientBuilder.create().build();

instance.execute(new HttpGet("http://www.google.com"));

CloseableHttpResponse response = instance.execute(new HttpGet("http://www.google.com"));
assertThat(response.getStatusLine().getStatusCode(), equalTo(200));

CloseableHttpResponse response = instance.execute(new HttpGet("http://www.google.com"));
String contentMimeType = ContentType.getOrDefault(response.getEntity()).getMimeType();
assertThat(contentMimeType, equalTo(ContentType.TEXT__HTML.getMimeType()));

CloseableHttpResponse response = instance.execute(new HttpGet("http://www.google.com"));
String bodyAsString = EntityUtils.toString(response.getEntity());
assertThat(bodyAsString, notNullValue());

@Test(expected = SocketTimeoutException.class)
public void givenLowTimeout__whenExecutingRequestWithTimeout__thenException()
    throws ClientProtocolException, IOException {
    RequestConfig requestConfig = RequestConfig.custom()
      .setConnectionRequestTimeout(1000).setConnectTimeout(1000).setSocketTimeout(1000).build();
    HttpGet request = new HttpGet(SAMPLE__URL);
    request.setConfig(requestConfig);
    instance.execute(request);
}

RequestConfig requestConfig = RequestConfig.custom().
    setConnectionRequestTimeout(1000).setConnectTimeout(1000).setSocketTimeout(1000).build();
HttpClientBuilder builder = HttpClientBuilder.create().setDefaultRequestConfig(requestConfig);

instance.execute(new HttpPost(SAMPLE__URL));

List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("key1", "value1"));
params.add(new BasicNameValuePair("key2", "value2"));
request.setEntity(new UrlEncodedFormEntity(params, Consts.UTF__8));

CloseableHttpClient instance = HttpClientBuilder.create().disableRedirectHandling().build();
CloseableHttpResponse response = instance.execute(new HttpGet("http://t.co/I5YYd9tddw"));
assertThat(response.getStatusLine().getStatusCode(), equalTo(301));

HttpGet request = new HttpGet(SAMPLE__URL);
request.addHeader(HttpHeaders.ACCEPT, "application/xml");
response = instance.execute(request);

CloseableHttpResponse response = instance.execute(new HttpGet(SAMPLE__URL));
Header[]headers = response.getHeaders(HttpHeaders.CONTENT__TYPE);
assertThat(headers, not(emptyArray()));

response = instance.execute(new HttpGet(SAMPLE__URL));
try {
    HttpEntity entity = response.getEntity();
    if (entity != null) {
        InputStream instream = entity.getContent();
        instream.close();
    }
} finally {
    response.close();
}