| Class | Description |
|---|---|
| AbstractAuthenticationHandler | Deprecated
(4.2) use
AuthenticationStrategy |
| AbstractHttpClient | Deprecated
(4.3) use
HttpClientBuilder. |
| AbstractResponseHandler<T> |
A generic
ResponseHandler that works with the response entity
for successful (2xx) responses. |
| AIMDBackoffManager |
The
AIMDBackoffManager applies an additive increase,
multiplicative decrease (AIMD) to managing a dynamic limit to
the number of connections allowed to a given host. |
| AutoRetryHttpClient | Deprecated
(4.3) use
HttpClientBuilder. |
| BasicAuthCache |
Default implementation of
AuthCache. |
| BasicCookieStore |
Default implementation of
CookieStore |
| BasicCredentialsProvider |
Default implementation of
CredentialsProvider. |
| BasicResponseHandler |
A
ResponseHandler that returns the response body as a String
for successful (2xx) responses. |
| ClientParamsStack | Deprecated
(4.3) use configuration classes provided 'org.apache.http.config'
and 'org.apache.http.client.config'
|
| CloseableHttpClient |
Base implementation of
HttpClient that also implements Closeable. |
| ContentEncodingHttpClient | Deprecated
(4.2) use
HttpClientBuilder |
| CookieSpecRegistries | |
| DecompressingHttpClient | Deprecated
(4.3) use
HttpClientBuilder |
| DefaultBackoffStrategy |
This
ConnectionBackoffStrategy backs off either for a raw
network socket or connection timeout or if the server explicitly
sends a 503 (Service Unavailable) response. |
| DefaultClientConnectionReuseStrategy | |
| DefaultConnectionKeepAliveStrategy |
Default implementation of a strategy deciding duration
that a connection can remain idle.
|
| DefaultHttpClient | Deprecated
(4.3) use
HttpClientBuilder see also CloseableHttpClient. |
| DefaultHttpRequestRetryHandler |
The default
HttpRequestRetryHandler used by request executors. |
| DefaultProxyAuthenticationHandler | Deprecated
(4.2) use
ProxyAuthenticationStrategy |
| DefaultRedirectHandler | Deprecated
(4.1) use
DefaultRedirectStrategy. |
| DefaultRedirectStrategy |
Default implementation of
RedirectStrategy. |
| DefaultRequestDirector | Deprecated
Do not use.
|
| DefaultServiceUnavailableRetryStrategy |
Default implementation of the
ServiceUnavailableRetryStrategy interface. |
| DefaultTargetAuthenticationHandler | Deprecated
(4.2) use
TargetAuthenticationStrategy |
| DefaultUserTokenHandler |
Default implementation of
UserTokenHandler. |
| EntityEnclosingRequestWrapper | Deprecated
(4.3) do not use.
|
| FutureRequestExecutionMetrics |
Collection of different counters used to gather metrics for
FutureRequestExecutionService. |
| FutureRequestExecutionService |
HttpAsyncClientWithFuture wraps calls to execute with a
HttpRequestFutureTask
and schedules them using the provided executor service. |
| HttpAuthenticator | Deprecated
(4.3) reserved for internal use.
|
| HttpClientBuilder |
Builder for
CloseableHttpClient instances. |
| HttpClients |
Factory methods for
CloseableHttpClient instances. |
| HttpRequestFutureTask<V> |
FutureTask implementation that wraps a HttpAsyncClientCallable and exposes various task
specific metrics.
|
| IdleConnectionEvictor |
This class maintains a background thread to enforce an eviction policy for expired / idle
persistent connections kept alive in the connection pool.
|
| LaxRedirectStrategy |
Lax
RedirectStrategy implementation
that automatically redirects all HEAD, GET, POST, and DELETE requests. |
| NoopUserTokenHandler |
Noop implementation of
UserTokenHandler that always returns null. |
| NullBackoffStrategy |
This is a
ConnectionBackoffStrategy that never backs off,
for compatibility with existing behavior. |
| ProxyAuthenticationStrategy |
Default
AuthenticationStrategy implementation
for proxy host authentication. |
| ProxyClient |
ProxyClient can be used to establish a tunnel via an HTTP proxy.
|
| RedirectLocations |
This class represents a collection of
URIs used
as redirect locations. |
| RequestWrapper | Deprecated
(4.3) do not use.
|
| RoutedRequest | Deprecated
(4.3) do not use.
|
| StandardHttpRequestRetryHandler |
HttpRequestRetryHandler which assumes
that all requested HTTP methods which should be idempotent according
to RFC-2616 are in fact idempotent and can be retried. |
| SystemDefaultCredentialsProvider |
Implementation of
CredentialsProvider backed by standard
JRE Authenticator. |
| SystemDefaultHttpClient | Deprecated
(4.3) use
HttpClientBuilder |
| TargetAuthenticationStrategy |
Default
AuthenticationStrategy implementation
for proxy host authentication. |
| WinHttpClients |
Factory methods for
CloseableHttpClient instances configured to use integrated
Windows authentication by default. |
| Exception | Description |
|---|---|
| TunnelRefusedException | Deprecated
(4.3) reserved for internal use.
|
The usual execution flow can be demonstrated by the code snippet below:
CloseableHttpClient httpclient = HttpClients.createDefault();
try {
HttpGet httpGet = new HttpGet("http://targethost/homepage");
CloseableHttpResponse response = httpclient.execute(httpGet);
try {
System.out.println(response.getStatusLine());
HttpEntity entity = response.getEntity();
// do something useful with the response body
// and ensure it is fully consumed
EntityUtils.consume(entity);
} finally {
response.close();
}
} finally {
httpclient.close();
}
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