Summary: Methods | [Expand All]
public interface

HttpClient

org.apache.http.client.HttpClient
Known Indirect Subclasses

Class Overview

Interface for an HTTP client. HTTP clients encapsulate a smorgasbord of objects required to execute HTTP requests while handling cookies, authentication, connection management, and other features. Thread safety of HTTP clients depends on the implementation and configuration of the specific client.

Summary

Public Methods
abstract HttpResponse execute(HttpUriRequest request, HttpContext context)
Executes a request using the given context.
abstract <T> T execute(HttpHost target, HttpRequest request, ResponseHandler<? extends T> responseHandler)
Executes a request to the target using the default context and processes the response using the given response handler.
abstract <T> T execute(HttpUriRequest request, ResponseHandler<? extends T> responseHandler)
Executes a request using the default context and processes the response using the given response handler.
abstract <T> T execute(HttpHost target, HttpRequest request, ResponseHandler<? extends T> responseHandler, HttpContext context)
Executes a request to the target using the given context and processes the response using the given response handler.
abstract HttpResponse execute(HttpHost target, HttpRequest request, HttpContext context)
Executes a request to the target using the given context.
abstract HttpResponse execute(HttpUriRequest request)
Executes a request using the default context.
abstract <T> T execute(HttpUriRequest request, ResponseHandler<? extends T> responseHandler, HttpContext context)
Executes a request using the given context and processes the response using the given response handler.
abstract HttpResponse execute(HttpHost target, HttpRequest request)
Executes a request to the target using the default context.
abstract ClientConnectionManager getConnectionManager()
Obtains the connection manager used by this client.
abstract HttpParams getParams()
Obtains the parameters for this client.

Public Methods

public abstract HttpResponse execute (HttpUriRequest request, HttpContext context)

Executes a request using the given context. The route to the target will be determined by the HTTP client.

Parameters
request the request to execute
context the context to use for the execution, or null to use the default context
Returns
  • the response to the request. This is always a final response, never an intermediate response with an 1xx status code. Whether redirects or authentication challenges will be returned or handled automatically depends on the implementation and configuration of this client.
Throws
IOException in case of a problem or the connection was aborted
ClientProtocolException in case of an http protocol error

public abstract T execute (HttpHost target, HttpRequest request, ResponseHandler<? extends T> responseHandler)

Executes a request to the target using the default context and processes the response using the given response handler.

Parameters
target the target host for the request. Implementations may accept null if they can still determine a route, for example to a default target or by inspecting the request.
request the request to execute
responseHandler the response handler
Returns
  • the response object as generated by the response handler.
Throws
IOException in case of a problem or the connection was aborted
ClientProtocolException in case of an http protocol error

public abstract T execute (HttpUriRequest request, ResponseHandler<? extends T> responseHandler)

Executes a request using the default context and processes the response using the given response handler.

Parameters
request the request to execute
responseHandler the response handler
Returns
  • the response object as generated by the response handler.
Throws
IOException in case of a problem or the connection was aborted
ClientProtocolException in case of an http protocol error

public abstract T execute (HttpHost target, HttpRequest request, ResponseHandler<? extends T> responseHandler, HttpContext context)

Executes a request to the target using the given context and processes the response using the given response handler.

Parameters
target the target host for the request. Implementations may accept null if they can still determine a route, for example to a default target or by inspecting the request.
request the request to execute
responseHandler the response handler
context the context to use for the execution, or null to use the default context
Returns
  • the response object as generated by the response handler.
Throws
IOException in case of a problem or the connection was aborted
ClientProtocolException in case of an http protocol error

public abstract HttpResponse execute (HttpHost target, HttpRequest request, HttpContext context)

Executes a request to the target using the given context.

Parameters
target the target host for the request. Implementations may accept null if they can still determine a route, for example to a default target or by inspecting the request.
request the request to execute
context the context to use for the execution, or null to use the default context
Returns
  • the response to the request. This is always a final response, never an intermediate response with an 1xx status code. Whether redirects or authentication challenges will be returned or handled automatically depends on the implementation and configuration of this client.
Throws
IOException in case of a problem or the connection was aborted
ClientProtocolException in case of an http protocol error

public abstract HttpResponse execute (HttpUriRequest request)

Executes a request using the default context.

Parameters
request the request to execute
Returns
  • the response to the request. This is always a final response, never an intermediate response with an 1xx status code. Whether redirects or authentication challenges will be returned or handled automatically depends on the implementation and configuration of this client.
Throws
IOException in case of a problem or the connection was aborted
ClientProtocolException in case of an http protocol error

public abstract T execute (HttpUriRequest request, ResponseHandler<? extends T> responseHandler, HttpContext context)

Executes a request using the given context and processes the response using the given response handler.

Parameters
request the request to execute
responseHandler the response handler
Returns
  • the response object as generated by the response handler.
Throws
IOException in case of a problem or the connection was aborted
ClientProtocolException in case of an http protocol error

public abstract HttpResponse execute (HttpHost target, HttpRequest request)

Executes a request to the target using the default context.

Parameters
target the target host for the request. Implementations may accept null if they can still determine a route, for example to a default target or by inspecting the request.
request the request to execute
Returns
  • the response to the request. This is always a final response, never an intermediate response with an 1xx status code. Whether redirects or authentication challenges will be returned or handled automatically depends on the implementation and configuration of this client.
Throws
IOException in case of a problem or the connection was aborted
ClientProtocolException in case of an http protocol error

public abstract ClientConnectionManager getConnectionManager ()

Obtains the connection manager used by this client.

Returns
  • the connection manager

public abstract HttpParams getParams ()

Obtains the parameters for this client. These parameters will become defaults for all requests being executed with this client, and for the parameters of dependent objects in this client.

Returns
  • the default parameters