com.alipay.api.java_websocket.util

类 Charsetfunctions

java.lang.Object

com.alipay.api.java_websocket.util.Charsetfunctions

public class Charsetfunctions
extends Object

方法概要

限定符和类型	方法和说明
static byte[]	asciiBytes(String s)
static byte[]	charsetBytes(String s, String charset)
static boolean	isValidUTF8(ByteBuffer data) Calling isValidUTF8 with offset 0
static boolean	isValidUTF8(ByteBuffer data, int off) Check if the provided BytebBuffer contains a valid utf8 encoded string.
static String	stringAscii(byte[] bytes)
static String	stringAscii(byte[] bytes, int offset, int length)
static String	stringCharset(byte[] bytes, String charset)
static String	stringCharset(ByteBuffer bytes, String charset)
static String	stringUtf8(byte[] bytes)
static String	stringUtf8(ByteBuffer bytes)
static byte[]	utf8Bytes(String s)

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

utf8Bytes

public static byte[] utf8Bytes(String s)

charsetBytes

public static byte[] charsetBytes(String s,
                                  String charset)

asciiBytes

public static byte[] asciiBytes(String s)

stringAscii

public static String stringAscii(byte[] bytes)

stringAscii

public static String stringAscii(byte[] bytes,
                                 int offset,
                                 int length)

stringUtf8

public static String stringUtf8(byte[] bytes)
                         throws InvalidDataException

抛出:

InvalidDataException

stringUtf8

public static String stringUtf8(ByteBuffer bytes)
                         throws InvalidDataException

抛出:

InvalidDataException

stringCharset

public static String stringCharset(byte[] bytes,
                                   String charset)
                            throws InvalidDataException

抛出:

InvalidDataException

stringCharset

public static String stringCharset(ByteBuffer bytes,
                                   String charset)
                            throws InvalidDataException

抛出:

InvalidDataException

isValidUTF8

public static boolean isValidUTF8(ByteBuffer data,
                                  int off)

Check if the provided BytebBuffer contains a valid utf8 encoded string.

Using the algorithm "Flexible and Economical UTF-8 Decoder" by Björn Höhrmann (http://bjoern.hoehrmann.de/utf-8/decoder/dfa/)

参数:

data - the ByteBuffer

off - offset (for performance reasons)

返回:

does the ByteBuffer contain a valid utf8 encoded string

isValidUTF8

public static boolean isValidUTF8(ByteBuffer data)

Calling isValidUTF8 with offset 0

参数:

data - the ByteBuffer

返回:

does the ByteBuffer contain a valid utf8 encoded string