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Class java.net.HttpURLConnection

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

public abstract class HttpURLConnection

extends URLConnection

Since:

JDK1.1

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_NOT_ACCEPTABLE

HTTP_NOT_AUTHORITATIVE

HTTP_NOT_FOUND

HTTP_NOT_MODIFIED

HTTP_NO_CONTENT

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

java.net.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.

public static final int HTTP_ACCEPTED

public static final int HTTP_BAD_GATEWAY

public static final int HTTP_BAD_METHOD

public static final int HTTP_BAD_REQUEST

4XX: client error

public static final int HTTP_CLIENT_TIMEOUT

public static final int HTTP_CONFLICT

public static final int HTTP_CREATED

public static final int HTTP_ENTITY_TOO_LARGE

public static final int HTTP_FORBIDDEN

public static final int HTTP_GATEWAY_TIMEOUT

public static final int HTTP_GONE

public static final int HTTP_INTERNAL_ERROR

public static final int HTTP_LENGTH_REQUIRED

public static final int HTTP_MOVED_PERM

public static final int HTTP_MOVED_TEMP

public static final int HTTP_MULT_CHOICE

3XX: relocation/redirect

public static final int HTTP_NOT_ACCEPTABLE

public static final int HTTP_NOT_AUTHORITATIVE

public static final int HTTP_NOT_FOUND

public static final int HTTP_NOT_MODIFIED

public static final int HTTP_NO_CONTENT

public static final int HTTP_OK

2XX: generally "OK"

public static final int HTTP_PARTIAL

public static final int HTTP_PAYMENT_REQUIRED

public static final int HTTP_PRECON_FAILED

public static final int HTTP_PROXY_AUTH

public static final int HTTP_REQ_TOO_LONG

public static final int HTTP_RESET

public static final int HTTP_SEE_OTHER

public static final int HTTP_SERVER_ERROR

5XX: server error

public static final int HTTP_UNAUTHORIZED

public static final int HTTP_UNAVAILABLE

public static final int HTTP_UNSUPPORTED_TYPE

public static final int HTTP_USE_PROXY

public static final int HTTP_VERSION

protected java.lang.String method

Since: JDK1.1

protected int responseCode

Since: JDK1.1

protected java.lang.String responseMessage

Since: JDK1.1

protected HttpURLConnection(URL u)

Constructor for the URLStreamHandler.

Since:

JDK1.1

public abstract void disconnect()

Close the connection to the server.

Since:

JDK1.1

public static boolean getFollowRedirects()

Since:

JDK1.1

public java.lang.String getRequestMethod()

Get the request method.

Since:

JDK1.1

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).

Throws: IOException

if an error occurred connecting to the server.

Since:

JDK1.1

public java.lang.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).

Throws: IOException

if an error occurred connecting to the server.

Since:

JDK1.1

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.

Since:

JDK1.1

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.

Since:

JDK1.1

public abstract boolean usingProxy()

Indicates if the connection is going through a proxy.

Since:

JDK1.1

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