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Class java.net.HttpURLConnection

java.lang.Object
   |
   +----java.net.URLConnection
           |
           +----java.net.HttpURLConnection

public abstract class HttpURLConnection
extends URLConnection

A URLConnection with support for HTTP-specific features. See the spec for details.

HTTP_ACCEPTED
HTTP_BAD_GATEWAY
HTTP_BAD_METHOD
HTTP_BAD_REQUEST: 4XX: client error
HTTP_CLIENT_TIMEOUT
HTTP_CONFLICT
HTTP_CREATED
HTTP_ENTITY_TOO_LARGE
HTTP_FORBIDDEN
HTTP_GATEWAY_TIMEOUT
HTTP_GONE
HTTP_INTERNAL_ERROR
HTTP_LENGTH_REQUIRED
HTTP_MOVED_PERM
HTTP_MOVED_TEMP
HTTP_MULT_CHOICE: 3XX: relocation/redirect
HTTP_NO_CONTENT
HTTP_NOT_ACCEPTABLE
HTTP_NOT_AUTHORITATIVE
HTTP_NOT_FOUND
HTTP_NOT_MODIFIED
HTTP_OK: 2XX: generally "OK"
HTTP_PARTIAL
HTTP_PAYMENT_REQUIRED
HTTP_PRECON_FAILED
HTTP_PROXY_AUTH
HTTP_REQ_TOO_LONG
HTTP_RESET
HTTP_SEE_OTHER
HTTP_SERVER_ERROR: 5XX: server error
HTTP_UNAUTHORIZED
HTTP_UNAVAILABLE
HTTP_UNSUPPORTED_TYPE
HTTP_USE_PROXY
HTTP_VERSION
method
responseCode
responseMessage

HttpURLConnection(URL): Constructor for the URLStreamHandler.

disconnect()

Close the connection to the server.

getFollowRedirects()

getRequestMethod()

Get the request method.

getResponseCode()

Gets HTTP response status.

getResponseMessage()

Gets the HTTP response message, if any, returned along with the response code from a server.

setFollowRedirects(boolean)

Sets whether HTTP redirects (requests with response code 3xx) should be automatically followed by this class.

setRequestMethod(String)

Set the method for the URL request, one of:

GET
POST
HEAD
OPTIONS
PUT
DELETE
TRACE

are legal, subject to protocol restrictions.

usingProxy()

Indicates if the connection is going through a proxy.

method

 protected String method

responseCode

 protected int responseCode

responseMessage

 protected String responseMessage

HTTP_OK

 public static final int HTTP_OK

2XX: generally "OK"

HTTP_CREATED

 public static final int HTTP_CREATED

HTTP_ACCEPTED

 public static final int HTTP_ACCEPTED

HTTP_NOT_AUTHORITATIVE

 public static final int HTTP_NOT_AUTHORITATIVE

HTTP_NO_CONTENT

 public static final int HTTP_NO_CONTENT

HTTP_RESET

 public static final int HTTP_RESET

HTTP_PARTIAL

 public static final int HTTP_PARTIAL

HTTP_MULT_CHOICE

 public static final int HTTP_MULT_CHOICE

3XX: relocation/redirect

HTTP_MOVED_PERM

 public static final int HTTP_MOVED_PERM

HTTP_MOVED_TEMP

 public static final int HTTP_MOVED_TEMP

HTTP_SEE_OTHER

 public static final int HTTP_SEE_OTHER

HTTP_NOT_MODIFIED

 public static final int HTTP_NOT_MODIFIED

HTTP_USE_PROXY

 public static final int HTTP_USE_PROXY

HTTP_BAD_REQUEST

 public static final int HTTP_BAD_REQUEST

4XX: client error

HTTP_UNAUTHORIZED

 public static final int HTTP_UNAUTHORIZED

HTTP_PAYMENT_REQUIRED

 public static final int HTTP_PAYMENT_REQUIRED

HTTP_FORBIDDEN

 public static final int HTTP_FORBIDDEN

HTTP_NOT_FOUND

 public static final int HTTP_NOT_FOUND

HTTP_BAD_METHOD

 public static final int HTTP_BAD_METHOD

HTTP_NOT_ACCEPTABLE

 public static final int HTTP_NOT_ACCEPTABLE

HTTP_PROXY_AUTH

 public static final int HTTP_PROXY_AUTH

HTTP_CLIENT_TIMEOUT

 public static final int HTTP_CLIENT_TIMEOUT

HTTP_CONFLICT

 public static final int HTTP_CONFLICT

HTTP_GONE

 public static final int HTTP_GONE

HTTP_LENGTH_REQUIRED

 public static final int HTTP_LENGTH_REQUIRED

HTTP_PRECON_FAILED

 public static final int HTTP_PRECON_FAILED

HTTP_ENTITY_TOO_LARGE

 public static final int HTTP_ENTITY_TOO_LARGE

HTTP_REQ_TOO_LONG

 public static final int HTTP_REQ_TOO_LONG

HTTP_UNSUPPORTED_TYPE

 public static final int HTTP_UNSUPPORTED_TYPE

HTTP_SERVER_ERROR

 public static final int HTTP_SERVER_ERROR

5XX: server error

HTTP_INTERNAL_ERROR

 public static final int HTTP_INTERNAL_ERROR

HTTP_BAD_GATEWAY

 public static final int HTTP_BAD_GATEWAY

HTTP_UNAVAILABLE

 public static final int HTTP_UNAVAILABLE

HTTP_GATEWAY_TIMEOUT

 public static final int HTTP_GATEWAY_TIMEOUT

HTTP_VERSION

 public static final int HTTP_VERSION

HttpURLConnection

 protected HttpURLConnection(URL u)

Constructor for the URLStreamHandler.

setFollowRedirects

 public static void setFollowRedirects(boolean set)

Sets whether HTTP redirects (requests with response code 3xx) should be automatically followed by this class. True by default. Applets cannot change this variable.

getFollowRedirects

 public static boolean getFollowRedirects()

setRequestMethod

 public void setRequestMethod(String method) throws ProtocolException

Set the method for the URL request, one of:

GET
POST
HEAD
OPTIONS
PUT
DELETE
TRACE

are legal, subject to protocol restrictions. The default method is GET.

Throws: ProtocolException: if the method cannot be reset or if the requested method isn't valid for HTTP.

getRequestMethod

 public String getRequestMethod()

Get the request method.

getResponseCode

 public int getResponseCode() throws IOException

Gets HTTP response status. From responses like:

 HTTP/1.0 200 OK
 HTTP/1.0 401 Unauthorized

Extracts the ints 200 and 401 respectively. Returns -1 if none can be discerned from the response (i.e., the response is not valid HTTP).

getResponseMessage

 public String getResponseMessage() throws IOException

Gets the HTTP response message, if any, returned along with the response code from a server. From responses like:

 HTTP/1.0 200 OK
 HTTP/1.0 404 Not Found

Extracts the Strings "OK" and "Not Found" respectively. Returns null if none could be discerned from the responses (the result was not valid HTTP).

disconnect

 public abstract void disconnect()

Close the connection to the server.

usingProxy

 public abstract boolean usingProxy()

Indicates if the connection is going through a proxy.

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