程序包 com.alibaba.nacos.common.codec

类 Base64

java.lang.Object
com.alibaba.nacos.common.codec.Base64
public class Base64 extends Object
From apache common codec, and remove some useless method. Provides Base64 encoding and decoding as defined by RFC 2045.

This class implements section 6.8. Base64 Content-Transfer-Encoding from RFC 2045 Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies by Freed and Borenstein.

The class can be parameterized in the following manner with various constructors:

  • URL-safe mode: Default off.
  • Line length: Default 76. Line length that aren't multiples of 4 will still essentially end up being multiples of 4 in the encoded data.
  • Line separator: Default is CRLF ("\r\n")

Since this class operates directly on byte streams, and not character streams, it is hard-coded to only encode/decode character encodings which are compatible with the lower 127 ASCII chart (ISO-8859-1, Windows-1252, UTF-8, etc).

This class is not thread-safe. Each thread should use its own instance.

从以下版本开始:
1.0
版本:
$Revision: 1080712 $
作者:
Apache Software Foundation
另请参阅:

  • 构造器概要

    构造器
    构造器
    说明
    Base64()
    Creates a Base64 codec used for decoding (all modes) and encoding in URL-unsafe mode.

  • 方法概要

    修饰符和类型
    方法
    说明
    static byte[]
    decodeBase64(byte[] base64Data)
    Decodes Base64 data into octets.
    static byte[]
    encodeBase64(byte[] binaryData)
    Encodes binary data using the base64 algorithm but does not chunk the output.
    static byte[]
    encodeBase64(byte[] binaryData, boolean isChunked, boolean urlSafe, int maxResultSize)
    Encodes binary data using the base64 algorithm, optionally chunking the output into 76 character blocks.

    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

    • Base64

      public Base64()
      Creates a Base64 codec used for decoding (all modes) and encoding in URL-unsafe mode.

      When encoding the line length is 0 (no chunking), and the encoding table is STANDARD_ENCODE_TABLE.

      When decoding all variants are supported.

  • 方法详细资料

    • encodeBase64

      public static byte[] encodeBase64(byte[] binaryData)
      Encodes binary data using the base64 algorithm but does not chunk the output.
      参数:
      binaryData - binary data to encode
      返回:
      byte[] containing Base64 characters in their UTF-8 representation.

    • encodeBase64

      public static byte[] encodeBase64(byte[] binaryData, boolean isChunked, boolean urlSafe, int maxResultSize)
      Encodes binary data using the base64 algorithm, optionally chunking the output into 76 character blocks.
      参数:
      binaryData - Array containing binary data to encode.
      isChunked - if true this encoder will chunk the base64 output into 76 character blocks
      urlSafe - if true this encoder will emit - and _ instead of the usual + and / characters.
      maxResultSize - The maximum result size to accept.
      返回:
      Base64-encoded data.
      抛出:
      IllegalArgumentException - Thrown when the input array needs an output array bigger than maxResultSize
      从以下版本开始:
      1.4

    • decodeBase64

      public static byte[] decodeBase64(byte[] base64Data)
      Decodes Base64 data into octets.
      参数:
      base64Data - Byte array containing Base64 data
      返回:
      Array containing decoded data.