java 网络字节转换工具种
java 网络字节转换工具类
package netkeeper;
/**
* 网络转换工具
* @author chenlei
*
*/
public class Tools {
/**
* 转换short为byte
*
* @param b
* @param s
* 需要转换的short
* @param index
*/
public static void putShort(byte b[], short s, int index) {
b[index + 1] = (byte) (s >>[img]/images/smiles/icon_cool.gif" alt="[/img]
;
b[index + 0] = (byte) (s >> 0);
}
/**
* 通过byte数组取到short
*
* @param b
* @param index
* 第几位开始取
* @return
*/
public static short getShort(byte[] b, int index) {
return (short) (((b[index + 1] > 24);
bb[index + 2] = (byte) (x >> 16);
bb[index + 1] = (byte) (x >>[img]/images/smiles/icon_cool.gif" alt="[/img]
;
bb[index + 0] = (byte) (x >> 0);
}
/**
* 通过byte数组取到int
*
* @param bb
* @param index
* 第几位开始
* @return
*/
public static int getInt(byte[] bb, int index) {
return (int) ((((bb[index + 3] & 0xff) > 56);
bb[index + 6] = (byte) (x >> 48);
bb[index + 5] = (byte) (x >> 40);
bb[index + 4] = (byte) (x >> 32);
bb[index + 3] = (byte) (x >> 24);
bb[index + 2] = (byte) (x >> 16);
bb[index + 1] = (byte) (x >>[img]/images/smiles/icon_cool.gif" alt="[/img]
;
bb[index + 0] = (byte) (x >> 0);
}
/**
* 通过byte数组取到long
*
* @param bb
* @param index
* @return
*/
public static long getLong(byte[] bb, int index) {
return ((((long) bb[index + 7] & 0xff) > 8; // 向右移8位
}
}
/**
* 字节到字符转换
*
* @param b
* @return
*/
public static char getChar(byte[] b, int index) {
int s = 0;
if (b[index + 1] > 0)
s += b[index + 1];
else
s += 256 + b[index + 0];
s *= 256;
if (b[index + 0] > 0)
s += b[index + 1];
else
s += 256 + b[index + 0];
char ch = (char) s;
return ch;
}
/**
* float转换byte
*
* @param bb
* @param x
* @param index
*/
public static void putFloat(byte[] bb, float x, int index) {
// byte[] b = new byte[4];
int l = Float.floatToIntBits(x);
for (int i = 0; i > 8;
}
}
/**
* 通过byte数组取得float
*
* @param bb
* @param index
* @return
*/
public static float getFloat(byte[] b, int index) {
int l;
l = b[index + 0];
l &= 0xff;
l |= ((long) b[index + 1] > 8;
}
}
/**
* 通过byte数组取得float
*
* @param bb
* @param index
* @return
*/
public static double getDouble(byte[] b, int index) {
long l;
l = b[0];
l &= 0xff;
l |= ((long) b[1]
package netkeeper;
/**
* 网络转换工具
* @author chenlei
*
*/
public class Tools {
/**
* 转换short为byte
*
* @param b
* @param s
* 需要转换的short
* @param index
*/
public static void putShort(byte b[], short s, int index) {
b[index + 1] = (byte) (s >>[img]/images/smiles/icon_cool.gif" alt="[/img]
;
b[index + 0] = (byte) (s >> 0);
}
/**
* 通过byte数组取到short
*
* @param b
* @param index
* 第几位开始取
* @return
*/
public static short getShort(byte[] b, int index) {
return (short) (((b[index + 1] > 24);
bb[index + 2] = (byte) (x >> 16);
bb[index + 1] = (byte) (x >>[img]/images/smiles/icon_cool.gif" alt="[/img]
;
bb[index + 0] = (byte) (x >> 0);
}
/**
* 通过byte数组取到int
*
* @param bb
* @param index
* 第几位开始
* @return
*/
public static int getInt(byte[] bb, int index) {
return (int) ((((bb[index + 3] & 0xff) > 56);
bb[index + 6] = (byte) (x >> 48);
bb[index + 5] = (byte) (x >> 40);
bb[index + 4] = (byte) (x >> 32);
bb[index + 3] = (byte) (x >> 24);
bb[index + 2] = (byte) (x >> 16);
bb[index + 1] = (byte) (x >>[img]/images/smiles/icon_cool.gif" alt="[/img]
;
bb[index + 0] = (byte) (x >> 0);
}
/**
* 通过byte数组取到long
*
* @param bb
* @param index
* @return
*/
public static long getLong(byte[] bb, int index) {
return ((((long) bb[index + 7] & 0xff) > 8; // 向右移8位
}
}
/**
* 字节到字符转换
*
* @param b
* @return
*/
public static char getChar(byte[] b, int index) {
int s = 0;
if (b[index + 1] > 0)
s += b[index + 1];
else
s += 256 + b[index + 0];
s *= 256;
if (b[index + 0] > 0)
s += b[index + 1];
else
s += 256 + b[index + 0];
char ch = (char) s;
return ch;
}
/**
* float转换byte
*
* @param bb
* @param x
* @param index
*/
public static void putFloat(byte[] bb, float x, int index) {
// byte[] b = new byte[4];
int l = Float.floatToIntBits(x);
for (int i = 0; i > 8;
}
}
/**
* 通过byte数组取得float
*
* @param bb
* @param index
* @return
*/
public static float getFloat(byte[] b, int index) {
int l;
l = b[index + 0];
l &= 0xff;
l |= ((long) b[index + 1] > 8;
}
}
/**
* 通过byte数组取得float
*
* @param bb
* @param index
* @return
*/
public static double getDouble(byte[] b, int index) {
long l;
l = b[0];
l &= 0xff;
l |= ((long) b[1]