com.junxin.util.crypto

类 BASE64Encoder

java.lang.Object

com.junxin.util.crypto.CharacterEncoder

com.junxin.util.crypto.BASE64Encoder

public class BASE64Encoder
extends CharacterEncoder

This class implements a BASE64 Character encoder as specified in RFC1521. This RFC is part of the MIME specification as published by the Internet Engineering Task Force (IETF). Unlike some other encoding schemes there is nothing in this encoding that indicates where a buffer starts or ends. This means that the encoded text will simply start with the first line of encoded text and end with the last line of encoded text.

字段概要

从类继承的字段 com.junxin.util.crypto.CharacterEncoder

pStream

构造器概要

构造器

构造器和说明
BASE64Encoder()

方法概要

限定符和类型	方法和说明
protected int	bytesPerAtom() this class encodes three bytes per atom.
protected int	bytesPerLine() this class encodes 57 bytes per line.
protected void	encodeAtom(OutputStream outStream, byte[] data, int offset, int len) encodeAtom - Take three bytes of input and encode it as 4 printable characters.

从类继承的方法 com.junxin.util.crypto.CharacterEncoder

encode, encode, encode, encode, encode, encodeBuffer, encodeBuffer, encodeBuffer, encodeBuffer, encodeBuffer, encodeBufferPrefix, encodeBufferSuffix, encodeLinePrefix, encodeLineSuffix, readFully

从类继承的方法 java.lang.Object

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

构造器详细资料

BASE64Encoder

public BASE64Encoder()

方法详细资料

bytesPerAtom

protected int bytesPerAtom()

this class encodes three bytes per atom.

指定者:

bytesPerAtom 在类中 CharacterEncoder

bytesPerLine

protected int bytesPerLine()

this class encodes 57 bytes per line. This results in a maximum of 57/3 * 4 or 76 characters per output line. Not counting the line termination.

指定者:

bytesPerLine 在类中 CharacterEncoder

encodeAtom

protected void encodeAtom(OutputStream outStream,
                          byte[] data,
                          int offset,
                          int len)
                   throws IOException

encodeAtom - Take three bytes of input and encode it as 4 printable characters. Note that if the length in len is less than three is encodes either one or two '=' signs to indicate padding characters.

指定者:

encodeAtom 在类中 CharacterEncoder

抛出:

IOException