org.apache.commons.httpclient.methods

Class EntityEnclosingMethod

java.lang.Object

org.apache.commons.httpclient.HttpMethodBase

org.apache.commons.httpclient.methods.ExpectContinueMethod

org.apache.commons.httpclient.methods.EntityEnclosingMethod

All Implemented Interfaces:

HttpMethod

Direct Known Subclasses:

PostMethod, PutMethod

public abstract class EntityEnclosingMethod
extends ExpectContinueMethod

This abstract class serves as a foundation for all HTTP methods that can enclose an entity within requests

Since:

2.0beta1

Version:

$Revision: 480424 $

Author:

Oleg Kalnichevski, Jeff Dever

Field Summary

Fields

Modifier and Type	Field and Description
static long	CONTENT_LENGTH_AUTO Deprecated. Use InputStreamRequestEntity.CONTENT_LENGTH_AUTO.
static long	CONTENT_LENGTH_CHUNKED Deprecated. Use setContentChunked(boolean).

Fields inherited from class org.apache.commons.httpclient.HttpMethodBase

effectiveVersion, statusLine

Constructor Summary

Constructors

Constructor and Description
EntityEnclosingMethod() No-arg constructor.
EntityEnclosingMethod(java.lang.String uri) Constructor specifying a URI.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	addContentLengthRequestHeader(HttpState state, HttpConnection conn) Generates Content-Length or Transfer-Encoding: Chunked request header, as long as no Content-Length request header already exists.
protected void	addRequestHeaders(HttpState state, HttpConnection conn) Populates the request headers map to with additional headers to be submitted to the given HttpConnection.
protected void	clearRequestBody() Clears the request body.
protected byte[]	generateRequestBody() Generates the request body.
protected RequestEntity	generateRequestEntity()
boolean	getFollowRedirects() Entity enclosing requests cannot be redirected without user intervention according to RFC 2616.
java.lang.String	getRequestCharSet() Returns the request's charset.
protected long	getRequestContentLength() Returns the length of the request body.
RequestEntity	getRequestEntity()
protected boolean	hasRequestContent() Returns true if there is a request body to be sent.
void	recycle() Deprecated. no longer supported and will be removed in the future version of HttpClient
void	setContentChunked(boolean chunked) Sets whether or not the content should be chunked.
void	setFollowRedirects(boolean followRedirects) Entity enclosing requests cannot be redirected without user intervention according to RFC 2616.
void	setRequestBody(java.io.InputStream body) Deprecated. use setRequestEntity(RequestEntity)
void	setRequestBody(java.lang.String body) Deprecated. use setRequestEntity(RequestEntity)
void	setRequestContentLength(int length) Deprecated. Use setContentChunked(boolean) or setRequestEntity(RequestEntity)
void	setRequestContentLength(long length) Deprecated. Use setContentChunked(boolean) or setRequestEntity(RequestEntity)
void	setRequestEntity(RequestEntity requestEntity)
protected boolean	writeRequestBody(HttpState state, HttpConnection conn) Writes the request body to the given connection.

Methods inherited from class org.apache.commons.httpclient.methods.ExpectContinueMethod

getUseExpectHeader, setUseExpectHeader

Methods inherited from class org.apache.commons.httpclient.HttpMethodBase

abort, addCookieRequestHeader, addHostRequestHeader, addProxyConnectionHeader, addRequestHeader, addRequestHeader, addResponseFooter, addUserAgentRequestHeader, checkNotUsed, checkUsed, execute, generateRequestLine, getAuthenticationRealm, getContentCharSet, getDoAuthentication, getEffectiveVersion, getHostAuthState, getHostConfiguration, getMethodRetryHandler, getName, getParams, getPath, getProxyAuthenticationRealm, getProxyAuthState, getQueryString, getRecoverableExceptionCount, getRequestHeader, getRequestHeaderGroup, getRequestHeaders, getRequestHeaders, getResponseBody, getResponseBody, getResponseBodyAsStream, getResponseBodyAsString, getResponseBodyAsString, getResponseCharSet, getResponseContentLength, getResponseFooter, getResponseFooters, getResponseHeader, getResponseHeaderGroup, getResponseHeaders, getResponseHeaders, getResponseStream, getResponseTrailerHeaderGroup, getStatusCode, getStatusLine, getStatusText, getURI, hasBeenUsed, isAborted, isConnectionCloseForced, isHttp11, isRequestSent, isStrictMode, processCookieHeaders, processResponseBody, processResponseHeaders, processStatusLine, readResponse, readResponseBody, readResponseHeaders, readStatusLine, releaseConnection, removeRequestHeader, removeRequestHeader, responseBodyConsumed, setConnectionCloseForced, setDoAuthentication, setHostConfiguration, setHttp11, setMethodRetryHandler, setParams, setPath, setQueryString, setQueryString, setRequestHeader, setRequestHeader, setResponseStream, setStrictMode, setURI, shouldCloseConnection, validate, writeRequest, writeRequestHeaders, writeRequestLine

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CONTENT_LENGTH_AUTO

public static final long CONTENT_LENGTH_AUTO

Deprecated. Use InputStreamRequestEntity.CONTENT_LENGTH_AUTO.

The content length will be calculated automatically. This implies buffering of the content.

See Also:

Constant Field Values

CONTENT_LENGTH_CHUNKED

public static final long CONTENT_LENGTH_CHUNKED

Deprecated. Use setContentChunked(boolean).

The request will use chunked transfer encoding. Content length is not calculated and the content is not buffered.

See Also:

Constant Field Values

Constructor Detail

EntityEnclosingMethod

public EntityEnclosingMethod()

No-arg constructor.

Since:

2.0

EntityEnclosingMethod

public EntityEnclosingMethod(java.lang.String uri)

Constructor specifying a URI.

Parameters:

uri - either an absolute or relative URI

Since:

2.0

Method Detail

hasRequestContent

protected boolean hasRequestContent()

Returns true if there is a request body to be sent.

This method must be overridden by sub-classes that implement alternative request content input methods

Specified by:

hasRequestContent in class ExpectContinueMethod

Returns:

boolean

Since:

2.0beta1

clearRequestBody

protected void clearRequestBody()

Clears the request body.

This method must be overridden by sub-classes that implement alternative request content input methods.

Since:

2.0beta1

generateRequestBody

protected byte[] generateRequestBody()

Generates the request body.

This method must be overridden by sub-classes that implement alternative request content input methods.

Returns:

request body as an array of bytes. If the request content has not been set, returns null.

Since:

2.0beta1

generateRequestEntity

protected RequestEntity generateRequestEntity()

getFollowRedirects

public boolean getFollowRedirects()

Entity enclosing requests cannot be redirected without user intervention according to RFC 2616.

Specified by:

getFollowRedirects in interface HttpMethod

Overrides:

getFollowRedirects in class HttpMethodBase

Returns:

false.

Since:

2.0

setFollowRedirects

public void setFollowRedirects(boolean followRedirects)

Entity enclosing requests cannot be redirected without user intervention according to RFC 2616.

Specified by:

setFollowRedirects in interface HttpMethod

Overrides:

setFollowRedirects in class HttpMethodBase

Parameters:

followRedirects - must always be false

setRequestContentLength

public void setRequestContentLength(int length)

Deprecated. Use setContentChunked(boolean) or setRequestEntity(RequestEntity)

Sets length information about the request body.

Note: If you specify a content length the request is unbuffered. This prevents redirection and automatic retry if a request fails the first time. This means that the HttpClient can not perform authorization automatically but will throw an Exception. You will have to set the necessary 'Authorization' or 'Proxy-Authorization' headers manually.

Parameters:

length - size in bytes or any of CONTENT_LENGTH_AUTO, CONTENT_LENGTH_CHUNKED. If number of bytes or CONTENT_LENGTH_CHUNKED is specified the content will not be buffered internally and the Content-Length header of the request will be used. In this case the user is responsible to supply the correct content length. If CONTENT_LENGTH_AUTO is specified the request will be buffered before it is sent over the network.

getRequestCharSet

public java.lang.String getRequestCharSet()

Returns the request's charset. The charset is parsed from the request entity's content type, unless the content type header has been set manually.

Overrides:

getRequestCharSet in class HttpMethodBase

Returns:

String The character set.

Since:

3.0

See Also:

RequestEntity.getContentType()

setRequestContentLength

public void setRequestContentLength(long length)

Deprecated. Use setContentChunked(boolean) or setRequestEntity(RequestEntity)

Sets length information about the request body.

Note: If you specify a content length the request is unbuffered. This prevents redirection and automatic retry if a request fails the first time. This means that the HttpClient can not perform authorization automatically but will throw an Exception. You will have to set the necessary 'Authorization' or 'Proxy-Authorization' headers manually.

Parameters:

length - size in bytes or any of CONTENT_LENGTH_AUTO, CONTENT_LENGTH_CHUNKED. If number of bytes or CONTENT_LENGTH_CHUNKED is specified the content will not be buffered internally and the Content-Length header of the request will be used. In this case the user is responsible to supply the correct content length. If CONTENT_LENGTH_AUTO is specified the request will be buffered before it is sent over the network.

setContentChunked

public void setContentChunked(boolean chunked)

Sets whether or not the content should be chunked.

Parameters:

chunked - true if the content should be chunked

Since:

3.0

getRequestContentLength

protected long getRequestContentLength()

Returns the length of the request body.

Returns:

number of bytes in the request body

addRequestHeaders

protected void addRequestHeaders(HttpState state,
                     HttpConnection conn)
                          throws java.io.IOException,
                                 HttpException

Populates the request headers map to with additional headers to be submitted to the given HttpConnection.

This implementation adds tt>Content-Length or Transfer-Encoding headers.

Subclasses may want to override this method to to add additional headers, and may choose to invoke this implementation (via super) to add the "standard" headers.

Overrides:

addRequestHeaders in class ExpectContinueMethod

Parameters:

state - the state information associated with this method

conn - the connection used to execute this HTTP method

Throws:

java.io.IOException - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.

HttpException - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

Since:

3.0

See Also:

HttpMethodBase.writeRequestHeaders(org.apache.commons.httpclient.HttpState, org.apache.commons.httpclient.HttpConnection)

addContentLengthRequestHeader

protected void addContentLengthRequestHeader(HttpState state,
                                 HttpConnection conn)
                                      throws java.io.IOException,
                                             HttpException

Generates Content-Length or Transfer-Encoding: Chunked request header, as long as no Content-Length request header already exists.

Parameters:

state - current state of http requests

conn - the connection to use for I/O

Throws:

java.io.IOException - when errors occur reading or writing to/from the connection

HttpException - when a recoverable error occurs

setRequestBody

public void setRequestBody(java.io.InputStream body)

Deprecated. use setRequestEntity(RequestEntity)

Sets the request body to be the specified inputstream.

Parameters:

body - Request body content as InputStream

setRequestBody

public void setRequestBody(java.lang.String body)

Deprecated. use setRequestEntity(RequestEntity)

Sets the request body to be the specified string. The string will be submitted, using the encoding specified in the Content-Type request header.
Example: setRequestHeader("Content-type", "text/xml; charset=UTF-8");
Would use the UTF-8 encoding. If no charset is specified, the default content encoding is used (ISO-8859-1).

Parameters:

body - Request body content as a string

writeRequestBody

protected boolean writeRequestBody(HttpState state,
                       HttpConnection conn)
                            throws java.io.IOException,
                                   HttpException

Writes the request body to the given connection.

Overrides:

writeRequestBody in class HttpMethodBase

Parameters:

state - the state information associated with this method

conn - the connection used to execute this HTTP method

Returns:

true

Throws:

java.io.IOException - if an I/O (transport) error occurs. Some transport exceptions can be recovered from.

HttpException - if a protocol exception occurs. Usually protocol exceptions cannot be recovered from.

recycle

public void recycle()

Deprecated. no longer supported and will be removed in the future version of HttpClient

Recycles the HTTP method so that it can be used again. Note that all of the instance variables will be reset once this method has been called. This method will also release the connection being used by this HTTP method.

Specified by:

recycle in interface HttpMethod

Overrides:

recycle in class HttpMethodBase

See Also:

HttpMethodBase.releaseConnection()

getRequestEntity

public RequestEntity getRequestEntity()

Returns:

Returns the requestEntity.

Since:

3.0

setRequestEntity

public void setRequestEntity(RequestEntity requestEntity)

Parameters:

requestEntity - The requestEntity to set.

Since:

3.0