com.github.emailservice.util

类 RFC2231Utility

java.lang.Object

com.github.emailservice.util.RFC2231Utility

public final class RFC2231Utility
extends Object

Utility class to decode/encode character set on HTTP Header fields based on RFC 2231. This implementation adheres to RFC 5987 in particular, which was defined for HTTP headers RFC 5987 builds on RFC 2231, but has lesser scope like mandatory charset definition and no parameter continuation

另请参阅:

RFC 2231, RFC 5987

构造器概要

构造器

构造器和说明
RFC2231Utility()

方法概要

限定符和类型	方法和说明
static String	decodeText(String encodedText) Decode a string of text obtained from a HTTP header as per RFC 2231 Eg 1.
static boolean	hasEncodedValue(String paramName) Checks if Asterisk (*) at the end of parameter name to indicate, if it has charset and language information to decode the value
static String	stripDelimiter(String paramName) If paramName has Asterisk (*) at the end, it will be stripped off, else the passed value will be returned

从类继承的方法 java.lang.Object

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

构造器详细资料

RFC2231Utility

public RFC2231Utility()

方法详细资料

hasEncodedValue

public static boolean hasEncodedValue(String paramName)

Checks if Asterisk (*) at the end of parameter name to indicate, if it has charset and language information to decode the value

参数:

paramName - The parameter, which is being checked.

返回:

true, if encoded as per RFC 2231, false otherwise

stripDelimiter

public static String stripDelimiter(String paramName)

If paramName has Asterisk (*) at the end, it will be stripped off, else the passed value will be returned

参数:

paramName - The parameter, which is being inspected.

返回:

stripped paramName of Asterisk (*), if RFC2231 encoded

decodeText

public static String decodeText(String encodedText)
                         throws UnsupportedEncodingException

Decode a string of text obtained from a HTTP header as per RFC 2231 Eg 1. us-ascii'en-us'This%20is%20%2A%2A%2Afun%2A%2A%2A will be decoded to This is ***fun*** Eg 2. iso-8859-1'en'%A3%20rate will be decoded to £ rate. Eg 3. UTF-8''%c2%a3%20and%20%e2%82%ac%20rates will be decoded to £ and € rates.

参数:

encodedText - - Text to be decoded has a format of <charset>'<language>'<encoded_value> and ASCII only

返回:

Decoded text based on charset encoding

抛出:

UnsupportedEncodingException - The requested character set wasn't found.