org.htmlunit.util

Class WebResponseWrapper

java.lang.Object

org.htmlunit.WebResponse

org.htmlunit.util.WebResponseWrapper

All Implemented Interfaces:

Serializable

public class WebResponseWrapper
extends WebResponse

Provides a convenient implementation of the WebResponse interface that can be subclassed by developers wishing to adapt a particular WebResponse. This class implements the Wrapper or Decorator pattern. Methods default to calling through to the wrapped web response object.

Author:

Marc Guillemot, Ahmed Ashour, Ronald Brill, Atsushi Nakagawa, Lai Quang Duong

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
WebResponseWrapper(WebResponse webResponse) Constructs a WebResponse object wrapping provided WebResponse.

Method Summary

Modifier and Type	Method and Description
void	cleanUp() Clean up the response data.
InputStream	getContentAsStream() Returns the response content as an input stream.
InputStream	getContentAsStreamWithBomIfApplicable() INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
String	getContentAsString() Returns the response content as a string, using the charset/encoding specified in the server response.
String	getContentAsString(Charset encoding) Returns the response content as a string, using the specified charset, rather than the charset/encoding specified in the server response.
Charset	getContentCharset() Returns the content charset for this response, even if no charset was specified explicitly.
long	getContentLength() Returns length of the content data.
String	getContentType() Returns the content type returned from the server, e.g.
Charset	getHeaderContentCharset() Returns the content charset specified explicitly in the Content-Type header or null if none was specified.
long	getLoadTime() Returns the time it took to load this web response, in milliseconds.
List<NameValuePair>	getResponseHeaders() Returns the response headers as a list of NameValuePairs.
String	getResponseHeaderValue(String headerName) Returns the value of the specified response header.
int	getStatusCode() Returns the status code that was returned by the server.
String	getStatusMessage() Returns the status message that was returned from the server.
WebRequest	getWebRequest() Returns the request used to load this response.
boolean	isSuccess()
boolean	isSuccessOrUseProxy()
boolean	isSuccessOrUseProxyOrNotModified()
boolean	wasContentCharsetTentative() Returns whether the charset of the previous call to WebResponse.getContentCharset() was "tentative".

Methods inherited from class org.htmlunit.WebResponse

getBlockReason, markAsBlocked, wasBlocked

Methods inherited from class java.lang.Object

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

Constructor Detail

WebResponseWrapper

public WebResponseWrapper(WebResponse webResponse)
                   throws IllegalArgumentException

Constructs a WebResponse object wrapping provided WebResponse.

Parameters:

webResponse - the webResponse that does the real work

Throws:

IllegalArgumentException - if the webResponse is null

Method Detail

getContentLength

public long getContentLength()

Returns length of the content data. The default behavior of this method is to return getContentLength() on the wrapped webResponse object.

Overrides:

getContentLength in class WebResponse

Returns:

the length

getContentAsStream

public InputStream getContentAsStream()
                               throws IOException

Returns the response content as an input stream. The default behavior of this method is to return getContentAsStream() on the wrapped webResponse object.

Overrides:

getContentAsStream in class WebResponse

Returns:

the response content as an input stream

Throws:

IOException - in case of IOProblems

wasContentCharsetTentative

public boolean wasContentCharsetTentative()

Returns whether the charset of the previous call to WebResponse.getContentCharset() was "tentative".

A charset is classed as "tentative" if its detection is prone to false positive/negatives.

For example, HTML meta-tag sniffing can be fooled by text that looks-like-a-meta-tag inside JavaScript code (false positive) or if the meta-tag is after the first 1024 bytes (false negative). The default behavior of this method is to return wasContentCharsetTentative() on the wrapped webResponse object.

Overrides:

wasContentCharsetTentative in class WebResponse

Returns:

true if the charset of the previous call to WebResponse.getContentCharset() was "tentative".

See Also:

https://html.spec.whatwg.org/multipage/parsing.html#concept-encoding-confidence

getContentAsString

public String getContentAsString()

Returns the response content as a string, using the charset/encoding specified in the server response. The default behavior of this method is to return getContentAsString() on the wrapped webResponse object.

Overrides:

getContentAsString in class WebResponse

Returns:

the response content as a string, using the charset/encoding specified in the server response or null if the content retrieval was failing

getContentAsString

public String getContentAsString(Charset encoding)

Returns the response content as a string, using the specified charset, rather than the charset/encoding specified in the server response. If there is a bom header the charset parameter will be overwritten by the bom. The default behavior of this method is to return getContentAsString(Charset) on the wrapped webResponse object.

Overrides:

getContentAsString in class WebResponse

Parameters:

encoding - the charset/encoding to use to convert the response content into a string

Returns:

the response content as a string or null if the content retrieval was failing

getHeaderContentCharset

public Charset getHeaderContentCharset()

Returns the content charset specified explicitly in the Content-Type header or null if none was specified. The default behavior of this method is to return getHeaderContentCharset() on the wrapped webResponse object.

Overrides:

getHeaderContentCharset in class WebResponse

Returns:

the content charset specified header or null if none was specified

getContentCharset

public Charset getContentCharset()

Returns the content charset for this response, even if no charset was specified explicitly.

This method always returns a valid charset. This method first checks the Content-Type header or in the content BOM for viable charset. If not found, it attempts to determine the charset based on the type of the content. As a last resort, this method returns the value of WebRequest.getDefaultResponseContentCharset() which is StandardCharsets.UTF_8 by default. The default behavior of this method is to return getContentCharset() on the wrapped webResponse object.

Overrides:

getContentCharset in class WebResponse

Returns:

the content charset for this response

getContentType

public String getContentType()

Returns the content type returned from the server, e.g. "text/html". The default behavior of this method is to return getContentType() on the wrapped webResponse object.

Overrides:

getContentType in class WebResponse

Returns:

the content type returned from the server, e.g. "text/html"

getLoadTime

public long getLoadTime()

Returns the time it took to load this web response, in milliseconds. The default behavior of this method is to return getLoadTime() on the wrapped webResponse object.

Overrides:

getLoadTime in class WebResponse

Returns:

the time it took to load this web response, in milliseconds

getResponseHeaders

public List<NameValuePair> getResponseHeaders()

Returns the response headers as a list of NameValuePairs. The default behavior of this method is to return getResponseHeaders() on the wrapped webResponse object.

Overrides:

getResponseHeaders in class WebResponse

Returns:

the response headers as a list of NameValuePairs

getResponseHeaderValue

public String getResponseHeaderValue(String headerName)

Returns the value of the specified response header. The default behavior of this method is to return getResponseHeaderValue() on the wrapped webResponse object.

Overrides:

getResponseHeaderValue in class WebResponse

Parameters:

headerName - the name of the header whose value is to be returned

Returns:

the header value, null if no response header exists with this name

getStatusCode

public int getStatusCode()

Returns the status code that was returned by the server. The default behavior of this method is to return getStatusCode() on the wrapped webResponse object.

Overrides:

getStatusCode in class WebResponse

Returns:

the status code that was returned by the server

getStatusMessage

public String getStatusMessage()

Returns the status message that was returned from the server. The default behavior of this method is to return getStatusMessage() on the wrapped webResponse object.

Overrides:

getStatusMessage in class WebResponse

Returns:

the status message that was returned from the server

getWebRequest

public WebRequest getWebRequest()

Returns the request used to load this response. The default behavior of this method is to return getWebRequest() on the wrapped webResponse object.

Overrides:

getWebRequest in class WebResponse

Returns:

the request used to load this response

cleanUp

public void cleanUp()

Clean up the response data. The default behavior of this method is to call cleanUp() on the wrapped webResponse object.

Overrides:

cleanUp in class WebResponse

getContentAsStreamWithBomIfApplicable

public InputStream getContentAsStreamWithBomIfApplicable()
                                                  throws IOException

Description copied from class: WebResponse

INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.

Overrides:

getContentAsStreamWithBomIfApplicable in class WebResponse

Returns:

the associated InputStream wrapped with a bom input stream if applicable

Throws:

IOException - in case of IO problems

isSuccess

public boolean isSuccess()

Overrides:

isSuccess in class WebResponse

Returns:

true if the 2xx

isSuccessOrUseProxy

public boolean isSuccessOrUseProxy()

Overrides:

isSuccessOrUseProxy in class WebResponse

Returns:

true if the 2xx or 305

isSuccessOrUseProxyOrNotModified

public boolean isSuccessOrUseProxyOrNotModified()

Overrides:

isSuccessOrUseProxyOrNotModified in class WebResponse

Returns:

true if the 2xx or 305