ByteUtilities (MINA 2.0.13 API文档 - 即时通讯网(52im.net))

java.lang.Object
- org.apache.mina.proxy.utils.ByteUtilities

```
public class ByteUtilities
extends java.lang.Object
```
ByteUtilities.java - Byte manipulation functions.

从以下版本开始:

MINA 2.0.0-M3

作者:

Apache MINA Project

构造器概要

构造器
构造器和说明

ByteUtilities()

构造器
构造器和说明
`ByteUtilities()`

方法概要

方法
限定符和类型	方法和说明
`static byte[]`	`asByteArray(java.lang.String hex)` Converts a hex string representation to a byte array.
`static java.lang.String`	`asHex(byte[] bytes)` Returns a hexadecimal representation of the given byte array.
`static java.lang.String`	`asHex(byte[] bytes, java.lang.String separator)` Returns a hexadecimal representation of the given byte array.
`static void`	`changeByteEndianess(byte[] b, int offset, int length)` Invert two bytes in the given byte array starting at the given offset and repeating the inversion length/2 times.
`static void`	`changeWordEndianess(byte[] b, int offset, int length)` Invert the endianness of words (4 bytes) in the given byte array starting at the given offset and repeating length/4 times.
`static byte[]`	`encodeString(java.lang.String s, boolean useUnicode)` Encodes the string to a byte array using UTF-16LE or the ASCII charset in function of the `useUnicode` argument.
`static byte[]`	`getOEMStringAsByteArray(java.lang.String s)` Converts an OEM string as defined in NTLM protocol (eg ASCII charset) to a byte array.
`static byte[]`	`getUTFStringAsByteArray(java.lang.String s)` Converts an UTF-16LE string as defined in NTLM protocol to a byte array.
`static void`	`intToNetworkByteOrder(int num, byte[] buf, int start, int count)` Encodes an integer into up to 4 bytes in network byte order in the supplied buffer starting at `start` offset and writing `count` bytes.
`static byte[]`	`intToNetworkByteOrder(int num, int count)` Encodes an integer into up to 4 bytes in network byte order.
`static boolean`	`isFlagSet(int flagSet, int testFlag)` Returns true if the flag `testFlag` is set in the `flags` flagset.
`static int`	`makeIntFromByte2(byte[] b)` Reads an int from 2 bytes of the given array at offset 0.
`static int`	`makeIntFromByte2(byte[] b, int offset)` Reads an int from 2 bytes of the given array at the given offset.
`static int`	`makeIntFromByte4(byte[] b)` Reads an int from 4 bytes of the given array at offset 0.
`static int`	`makeIntFromByte4(byte[] b, int offset)` Reads an int from 4 bytes of the given array at the given offset.
`static int`	`networkByteOrderToInt(byte[] buf, int start, int count)` Returns the integer represented by up to 4 bytes in network byte order.
`static byte[]`	`writeInt(int v)` Write a 32 bit int as LITTLE_ENDIAN.
`static byte[]`	`writeInt(int v, byte[] b, int offset)` Write a 32 bit int as LITTLE_ENDIAN to the given array `b` at offset `offset`.
`static byte[]`	`writeShort(short v)` Write a 16 bit short as LITTLE_ENDIAN.
`static byte[]`	`writeShort(short v, byte[] b, int offset)` Write a 16 bit short as LITTLE_ENDIAN to the given array `b` at offset `offset`.

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
  - ByteUtilities
```
public ByteUtilities()
```
- 方法详细资料
  - networkByteOrderToInt
```
public static int networkByteOrderToInt(byte[] buf,
                        int start,
                        int count)
```
    Returns the integer represented by up to 4 bytes in network byte order.
    
    参数:
    buf - the buffer to read the bytes from
    start - The starting position
    count - The number of bytes to in the buffer
    
    返回:
    the integer value
  - intToNetworkByteOrder
```
public static byte[] intToNetworkByteOrder(int num,
                           int count)
```
    Encodes an integer into up to 4 bytes in network byte order.
    
    参数:
    num - the int to convert to a byte array
    count - the number of reserved bytes for the write operation
    
    返回:
    the resulting byte array
  - intToNetworkByteOrder
```
public static void intToNetworkByteOrder(int num,
                         byte[] buf,
                         int start,
                         int count)
```
    Encodes an integer into up to 4 bytes in network byte order in the supplied buffer starting at start offset and writing count bytes.
    
    参数:
    num - the int to convert to a byte array
    buf - the buffer to write the bytes to
    start - the offset from beginning for the write operation
    count - the number of reserved bytes for the write operation
  - writeShort
```
public static final byte[] writeShort(short v)
```
    Write a 16 bit short as LITTLE_ENDIAN.
    
    参数:
    v - the short to write
    
    返回:
    the Short in a byte[]
  - writeShort
```
public static final byte[] writeShort(short v,
                byte[] b,
                int offset)
```
    Write a 16 bit short as LITTLE_ENDIAN to the given array b at offset offset.
    
    参数:
    v - the short to write
    b - the byte array to write to
    offset - the offset at which to start writing in the array
    
    返回:
    the Short in a byte[]
  - writeInt
```
public static final byte[] writeInt(int v)
```
    Write a 32 bit int as LITTLE_ENDIAN.
    
    参数:
    v - the int to write
    
    返回:
    the Int in a byte[]
  - writeInt
```
public static final byte[] writeInt(int v,
              byte[] b,
              int offset)
```
    Write a 32 bit int as LITTLE_ENDIAN to the given array b at offset offset.
    
    参数:
    v - the int to write
    b - the byte array to write to
    offset - the offset at which to start writing in the array
    
    返回:
    the Int in a byte[]
  - changeWordEndianess
```
public static final void changeWordEndianess(byte[] b,
                       int offset,
                       int length)
```
    Invert the endianness of words (4 bytes) in the given byte array starting at the given offset and repeating length/4 times. eg: b0b1b2b3 -> b3b2b1b0
    
    参数:
    b - the byte array
    offset - the offset at which to change word start
    length - the number of bytes on which to operate (should be a multiple of 4)
  - changeByteEndianess
```
public static final void changeByteEndianess(byte[] b,
                       int offset,
                       int length)
```
    Invert two bytes in the given byte array starting at the given offset and repeating the inversion length/2 times. eg: b0b1 -@gt; b1b0
    
    参数:
    b - the byte array
    offset - the offset at which to change word start
    length - the number of bytes on which to operate (should be a multiple of 2)
  - getOEMStringAsByteArray
```
public static final byte[] getOEMStringAsByteArray(java.lang.String s)
                                            throws java.io.UnsupportedEncodingException
```
    Converts an OEM string as defined in NTLM protocol (eg ASCII charset) to a byte array.
    
    参数:
    s - the string to convert
    
    返回:
    the result byte array
    
    抛出:
    
    java.io.UnsupportedEncodingException - if the string is not an OEM string
  - getUTFStringAsByteArray
```
public static final byte[] getUTFStringAsByteArray(java.lang.String s)
                                            throws java.io.UnsupportedEncodingException
```
    Converts an UTF-16LE string as defined in NTLM protocol to a byte array.
    
    参数:
    s - the string to convert
    
    返回:
    the result byte array
    
    抛出:
    
    java.io.UnsupportedEncodingException - if the string is not an UTF-16LE string
  - encodeString
```
public static final byte[] encodeString(java.lang.String s,
                  boolean useUnicode)
                                 throws java.io.UnsupportedEncodingException
```
    Encodes the string to a byte array using UTF-16LE or the ASCII charset in function of the useUnicode argument.
    
    参数:
    s - the string to encode
    useUnicode - if true then string is encoded to UTF-16LE otherwise to ASCII
    
    返回:
    the encoded string as a byte array
    
    抛出:
    
    java.io.UnsupportedEncodingException - if encoding fails
  - asHex
```
public static java.lang.String asHex(byte[] bytes)
```
    Returns a hexadecimal representation of the given byte array.
    
    参数:
    bytes - the array to output to an hex string
    
    返回:
    the hex representation as a string
  - asHex
```
public static java.lang.String asHex(byte[] bytes,
                     java.lang.String separator)
```
    Returns a hexadecimal representation of the given byte array.
    
    参数:
    bytes - the array to output to an hex string
    separator - the separator to use between each byte in the output string. If null no char is inserted between each byte value.
    
    返回:
    the hex representation as a string
  - asByteArray
```
public static byte[] asByteArray(java.lang.String hex)
```
    Converts a hex string representation to a byte array.
    
    参数:
    hex - the string holding the hex values
    
    返回:
    the resulting byte array
  - makeIntFromByte4
```
public static final int makeIntFromByte4(byte[] b)
```
    Reads an int from 4 bytes of the given array at offset 0.
    
    参数:
    b - the byte array to read
    
    返回:
    the integer value
  - makeIntFromByte4
```
public static final int makeIntFromByte4(byte[] b,
                   int offset)
```
    Reads an int from 4 bytes of the given array at the given offset.
    
    参数:
    b - the byte array to read
    offset - the offset at which to start
    
    返回:
    the int value
  - makeIntFromByte2
```
public static final int makeIntFromByte2(byte[] b)
```
    Reads an int from 2 bytes of the given array at offset 0.
    
    参数:
    b - the byte array to read
    
    返回:
    the int value
  - makeIntFromByte2
```
public static final int makeIntFromByte2(byte[] b,
                   int offset)
```
    Reads an int from 2 bytes of the given array at the given offset.
    
    参数:
    b - the byte array to read
    offset - the offset at which to start
    
    返回:
    the int value
  - isFlagSet
```
public static final boolean isFlagSet(int flagSet,
                int testFlag)
```
    Returns true if the flag testFlag is set in the flags flagset.
    
    参数:
    flagSet - the flagset to test
    testFlag - the flag we search the presence of
    
    返回:
    true if testFlag is present in the flagset, false otherwise.

类 ByteUtilities

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

ByteUtilities

方法详细资料

networkByteOrderToInt

intToNetworkByteOrder

intToNetworkByteOrder

writeShort

writeShort

writeInt

writeInt

changeWordEndianess

changeByteEndianess

getOEMStringAsByteArray

getUTFStringAsByteArray

encodeString

asHex

asHex

asByteArray

makeIntFromByte4

makeIntFromByte4

makeIntFromByte2

makeIntFromByte2

isFlagSet