base64.html

java编码的一个开发包

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<A NAME="isArrayByteBase64(byte[])"><!-- --></A><H3>
isArrayByteBase64</H3>
<PRE>
public static boolean <B>isArrayByteBase64</B>(byte[]&nbsp;arrayOctect)</PRE>
<DL>
<DD>Tests a given byte array to see if it contains
 only valid characters within the Base64 alphabet.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>arrayOctect</CODE> - byte array to test
<DT><B>Returns:</B><DD>true if all bytes are valid characters in the Base64
         alphabet or if the byte array is empty; false, otherwise</DL>
</DD>
</DL>
<HR>

<A NAME="encodeBase64(byte[])"><!-- --></A><H3>
encodeBase64</H3>
<PRE>
public static byte[] <B>encodeBase64</B>(byte[]&nbsp;binaryData)</PRE>
<DL>
<DD>Encodes binary data using the base64 algorithm but
 does not chunk the output.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>binaryData</CODE> - binary data to encode
<DT><B>Returns:</B><DD>Base64 characters</DL>
</DD>
</DL>
<HR>

<A NAME="encodeBase64Chunked(byte[])"><!-- --></A><H3>
encodeBase64Chunked</H3>
<PRE>
public static byte[] <B>encodeBase64Chunked</B>(byte[]&nbsp;binaryData)</PRE>
<DL>
<DD>Encodes binary data using the base64 algorithm and chunks
 the encoded output into 76 character blocks
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>binaryData</CODE> - binary data to encode
<DT><B>Returns:</B><DD>Base64 characters chunked in 76 character blocks</DL>
</DD>
</DL>
<HR>

<A NAME="decode(java.lang.Object)"><!-- --></A><H3>
decode</H3>
<PRE>
public <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>decode</B>(<A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;pObject)
              throws <A HREF="../../../../../org/apache/commons/codec/DecoderException.html" title="class in org.apache.commons.codec">DecoderException</A></PRE>
<DL>
<DD>Decodes an Object using the base64 algorithm.  This method
 is provided in order to satisfy the requirements of the
 Decoder interface, and will throw a DecoderException if the
 supplied object is not of type byte[].
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/commons/codec/Decoder.html#decode(java.lang.Object)">decode</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/commons/codec/Decoder.html" title="interface in org.apache.commons.codec">Decoder</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pObject</CODE> - Object to decode
<DT><B>Returns:</B><DD>An object (of type byte[]) containing the 
         binary data which corresponds to the byte[] supplied.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../org/apache/commons/codec/DecoderException.html" title="class in org.apache.commons.codec">DecoderException</A></CODE> - if the parameter supplied is not
                          of type byte[]</DL>
</DD>
</DL>
<HR>

<A NAME="decode(byte[])"><!-- --></A><H3>
decode</H3>
<PRE>
public byte[] <B>decode</B>(byte[]&nbsp;pArray)</PRE>
<DL>
<DD>Decodes a byte[] containing containing
 characters in the Base64 alphabet.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/commons/codec/BinaryDecoder.html#decode(byte[])">decode</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/commons/codec/BinaryDecoder.html" title="interface in org.apache.commons.codec">BinaryDecoder</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pArray</CODE> - A byte array containing Base64 character data
<DT><B>Returns:</B><DD>a byte array containing binary data</DL>
</DD>
</DL>
<HR>

<A NAME="encodeBase64(byte[], boolean)"><!-- --></A><H3>
encodeBase64</H3>
<PRE>
public static byte[] <B>encodeBase64</B>(byte[]&nbsp;binaryData,
                                  boolean&nbsp;isChunked)</PRE>
<DL>
<DD>Encodes binary data using the base64 algorithm, optionally
 chunking the output into 76 character blocks.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>binaryData</CODE> - Array containing binary data to encode.<DD><CODE>isChunked</CODE> - if isChunked is true this encoder will chunk
                  the base64 output into 76 character blocks
<DT><B>Returns:</B><DD>Base64-encoded data.</DL>
</DD>
</DL>
<HR>

<A NAME="decodeBase64(byte[])"><!-- --></A><H3>
decodeBase64</H3>
<PRE>
public static byte[] <B>decodeBase64</B>(byte[]&nbsp;base64Data)</PRE>
<DL>
<DD>Decodes Base64 data into octects
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>base64Data</CODE> - Byte array containing Base64 data
<DT><B>Returns:</B><DD>Array containing decoded data.</DL>
</DD>
</DL>
<HR>

<A NAME="discardWhitespace(byte[])"><!-- --></A><H3>
discardWhitespace</H3>
<PRE>
static byte[] <B>discardWhitespace</B>(byte[]&nbsp;data)</PRE>
<DL>
<DD>Discards any whitespace from a base-64 encoded block.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - The base-64 encoded data to discard the whitespace
 from.
<DT><B>Returns:</B><DD>The data, less whitespace (see RFC 2045).</DL>
</DD>
</DL>
<HR>

<A NAME="discardNonBase64(byte[])"><!-- --></A><H3>
discardNonBase64</H3>
<PRE>
static byte[] <B>discardNonBase64</B>(byte[]&nbsp;data)</PRE>
<DL>
<DD>Discards any characters outside of the base64 alphabet, per
 the requirements on page 25 of RFC 2045 - "Any characters
 outside of the base64 alphabet are to be ignored in base64
 encoded data."
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - The base-64 encoded data to groom
<DT><B>Returns:</B><DD>The data, less non-base64 characters (see RFC 2045).</DL>
</DD>
</DL>
<HR>

<A NAME="encode(java.lang.Object)"><!-- --></A><H3>
encode</H3>
<PRE>
public <A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>encode</B>(<A HREF="http://java.sun.com/products/jdk/1.3/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;pObject)
              throws <A HREF="../../../../../org/apache/commons/codec/EncoderException.html" title="class in org.apache.commons.codec">EncoderException</A></PRE>
<DL>
<DD>Encodes an Object using the base64 algorithm.  This method
 is provided in order to satisfy the requirements of the
 Encoder interface, and will throw an EncoderException if the
 supplied object is not of type byte[].
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/commons/codec/Encoder.html#encode(java.lang.Object)">encode</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/commons/codec/Encoder.html" title="interface in org.apache.commons.codec">Encoder</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pObject</CODE> - Object to encode
<DT><B>Returns:</B><DD>An object (of type byte[]) containing the 
         base64 encoded data which corresponds to the byte[] supplied.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../../org/apache/commons/codec/EncoderException.html" title="class in org.apache.commons.codec">EncoderException</A></CODE> - if the parameter supplied is not
                          of type byte[]</DL>
</DD>
</DL>
<HR>

<A NAME="encode(byte[])"><!-- --></A><H3>
encode</H3>
<PRE>
public byte[] <B>encode</B>(byte[]&nbsp;pArray)</PRE>
<DL>
<DD>Encodes a byte[] containing binary data, into a byte[] containing
 characters in the Base64 alphabet.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/commons/codec/BinaryEncoder.html#encode(byte[])">encode</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/commons/codec/BinaryEncoder.html" title="interface in org.apache.commons.codec">BinaryEncoder</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pArray</CODE> - a byte array containing binary data
<DT><B>Returns:</B><DD>A byte array containing only Base64 character data</DL>
</DD>
</DL>
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