当前页面: 在线文档首页 > JBOSS Portal 2.4 API 英文版文档

Base64 - JBOSS Portal 2.4 API 英文版文档

Overview  Package   Class  Tree  Deprecated  Index  Help
PREV CLASS   NEXT CLASS	FRAMES    NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

---

org.jboss.portal.common.util
Class Base64

java.lang.Object
  org.jboss.portal.common.util.Base64

---

public class Base64

extends java.lang.Object

Encodes and decodes to and from Base64 and URL-safe Base64 encodings. URL-safe Base64 encoding being defined here as standard Base64 encoding with the following modifications:

• use '-' and '_' instead of '+' and '/'
• no line feeds
• padding character is '*' instead of '='

Based on version 2.1 of the Base64 class developed by Robert Harder (public domain). Please visit http://iharder.net/base64 periodically to check for updates or to contribute improvements.

Since:

2.4 (Apr 30, 2006)

---

Method Summary
static byte[]	decode(byte[] source, int off, int len, boolean urlSafeEncodingWasUsed)           Very low-level access to decoding ASCII characters in the form of a byte array.
static byte[]	decode(java.lang.String s)           Decodes data from Base64 notation
static byte[]	decode(java.lang.String s, boolean urlSafeEncodingWasUsed)           Decodes data from Base64 notation
static java.lang.String	encodeBytes(byte[] source)           Encodes a byte array into Base64 notation using the standard Base64 encoding.
static java.lang.String	encodeBytes(byte[] source, boolean useURLSafeEncoding)           Encodes a byte array into Base64 notation.
static java.lang.String	encodeBytes(byte[] source, int off, int len, boolean useURLSafeEncoding)           Encodes a byte array into Base64 notation.
void	initAlphabets(boolean useURLSafeEncoding)           Determine which ALPHABET to use.

 

Methods inherited from class java.lang.Object

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

 

Method Detail

initAlphabets

public void initAlphabets(boolean useURLSafeEncoding)

Determine which ALPHABET to use.

---

encodeBytes

public static java.lang.String encodeBytes(byte[] source)

Encodes a byte array into Base64 notation using the standard Base64 encoding.

Parameters:

source - The data to convert

---

encodeBytes

public static java.lang.String encodeBytes(byte[] source,
                                           boolean useURLSafeEncoding)

Encodes a byte array into Base64 notation.

Parameters:

source - The data to convert

useURLSafeEncoding - true to use '-', '_' instead of '+', '/' in the alphabet and '*' instead of '=' for padding to generate a URL-safe encoding. Note: Technically, this makes your encoding non-compliant.

---

encodeBytes

public static java.lang.String encodeBytes(byte[] source,
                                           int off,
                                           int len,
                                           boolean useURLSafeEncoding)

Encodes a byte array into Base64 notation.

Parameters:

source - The data to convert

off - Offset in array where conversion should begin

len - Length of data to convert

useURLSafeEncoding - true to use '-', '_' instead of '+', '/' in the alphabet and '*' instead of '=' for padding to generate a URL-safe encoding. Note: Technically, this makes your encoding non-compliant.

---

decode

public static byte[] decode(byte[] source,
                            int off,
                            int len,
                            boolean urlSafeEncodingWasUsed)

Very low-level access to decoding ASCII characters in the form of a byte array.

Parameters:

source - The Base64 encoded data

off - The offset of where to begin decoding

len - The length of characters to decode

urlSafeEncodingWasUsed - true if the URL-safe was used to encode the data to be decoded

Returns:

decoded data

---

decode

public static byte[] decode(java.lang.String s,
                            boolean urlSafeEncodingWasUsed)

Decodes data from Base64 notation

Parameters:

s - the string to decode

urlSafeEncodingWasUsed - true if the URL-safe was used to encode the data to be decoded

Returns:

the decoded data

---

decode

public static byte[] decode(java.lang.String s)

Decodes data from Base64 notation

Parameters:

s - the string to decode

Returns:

the decoded data

---

Overview  Package   Class  Tree  Deprecated  Index  Help
PREV CLASS   NEXT CLASS	FRAMES    NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

---