oracle.cabo.share.util
Class CaboHttpUtils

java.lang.Object
  |
  +--oracle.cabo.share.util.CaboHttpUtils

public class CaboHttpUtils

extends java.lang.Object

Utilities for working with HTTP.

Method Summary

static java.lang.String[]	decodeQValueString(java.lang.String string) Given a string that uses q-value encodings, returns a sorted array of strings from most-preferred to least.
static java.lang.String	decodeRequestParameter(java.lang.String string, java.lang.String encoding, byte[] buffer) Given a parameter string and the name of a character encoding, fixes the string.
static java.util.Locale	determineLocale(javax.servlet.ServletRequest request) Returns the locale to be used for a request, based on Accept-Language and Accept-Charset HTTP headers.
static java.lang.String	getFullServletPath(javax.servlet.http.HttpServletRequest httpRequest) Returns the full servlet path: getRequestURI() - getPathInfo() .
static void	setNoCacheHeaders(javax.servlet.http.HttpServletResponse response) Sets headers on a servlet reponse to completely block caching for even the most poorly written browsers.
static void	validateEncoding(java.lang.String encoding) Throws an UnsupportedEncodingException if the provided encoding is not supported.

Methods inherited from class java.lang.Object

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

Method Detail

getFullServletPath

public static java.lang.String getFullServletPath(javax.servlet.http.HttpServletRequest httpRequest)

Returns the full servlet path: getRequestURI() - getPathInfo() . In the Servlet 2.1 API, this is just getServletPath() , but in Servlet 2.2, it's getContextPath() + getServletPath(), hence the need for a utility method that works in both versions.

setNoCacheHeaders

public static void setNoCacheHeaders(javax.servlet.http.HttpServletResponse response)

Sets headers on a servlet reponse to completely block caching for even the most poorly written browsers.

determineLocale

public static java.util.Locale determineLocale(javax.servlet.ServletRequest request)

Returns the locale to be used for a request, based on Accept-Language and Accept-Charset HTTP headers. Returns null if the locale cannot be determined.

validateEncoding

public static void validateEncoding(java.lang.String encoding)
                             throws java.io.UnsupportedEncodingException

Throws an UnsupportedEncodingException if the provided encoding is not supported.

Parameters:

encoding - the name of a character encoding

decodeRequestParameter

public static final java.lang.String decodeRequestParameter(java.lang.String string,
                                                            java.lang.String encoding,
                                                            byte[] buffer)
                                                     throws java.io.UnsupportedEncodingException

Given a parameter string and the name of a character encoding, fixes the string. The Servlet API builds Strings for all submitted data as if they were ISO-8859-1 encoded; this function undoes the damage. Clients should pass in the same encoding that they used for generating the page that the submission comes from.

Parameters:

string - the string

encoding - the name of a character encoding

buffer - an optional byte buffer, for reuse; pass null if you're not calling this function repeatedly

decodeQValueString

public static java.lang.String[] decodeQValueString(java.lang.String string)

Given a string that uses q-value encodings, returns a sorted array of strings from most-preferred to least. For example, given "foo;0.25,bar,baz;0.5", this will return ["bar", "baz", "foo"].