cn.shorturl.core.util

类 Base62

java.lang.Object

cn.shorturl.core.util.Base62

public class Base62
extends Object

Base62编码解码实现，常用于短URL From https://github.com/seruco/base62 A Base62 encoder/decoder.

作者:

Sebastian Ruhleder, sebastian@seruco.io

方法概要

限定符和类型	方法和说明
static Base62	createInstance() Creates a Base62 instance.
static Base62	createInstanceWithGmpCharacterSet() Creates a Base62 instance using the GMP-style character set.
static Base62	createInstanceWithInvertedCharacterSet() Creates a Base62 instance using the inverted character set.
byte[]	decode(byte[] encoded) Decodes a sequence of Base62-encoded bytes.
byte[]	encode(byte[] message) Encodes a sequence of bytes in Base62 encoding.
boolean	isBase62Encoding(byte[] bytes) Checks whether a sequence of bytes is encoded over a Base62 alphabet.

从类继承的方法 java.lang.Object

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

方法详细资料

createInstance

public static Base62 createInstance()

Creates a Base62 instance. Defaults to the GMP-style character set.

返回:

a Base62 instance.

createInstanceWithGmpCharacterSet

public static Base62 createInstanceWithGmpCharacterSet()

Creates a Base62 instance using the GMP-style character set.

返回:

a Base62 instance.

createInstanceWithInvertedCharacterSet

public static Base62 createInstanceWithInvertedCharacterSet()

Creates a Base62 instance using the inverted character set.

返回:

a Base62 instance.

encode

public byte[] encode(byte[] message)

Encodes a sequence of bytes in Base62 encoding.

参数:

message - a byte sequence.

返回:

a sequence of Base62-encoded bytes.

decode

public byte[] decode(byte[] encoded)

Decodes a sequence of Base62-encoded bytes.

参数:

encoded - a sequence of Base62-encoded bytes.

返回:

a byte sequence.

抛出:

IllegalArgumentException - when encoded is not encoded over the Base62 alphabet.

isBase62Encoding

public boolean isBase62Encoding(byte[] bytes)

Checks whether a sequence of bytes is encoded over a Base62 alphabet.

参数:

bytes - a sequence of bytes.

返回:

true when the bytes are encoded over a Base62 alphabet, false otherwise.