java 处理.net发送过来的数组，数组转换为java的基本类型，涉及到高低位转换

java 处理.net发送过来的数组，数组转换基本类型，涉及到高低位转换：

/** * short-->byte[] * @param data * @return */public static byte[] getBytes(short data){byte[] bytes = new byte[2];bytes[0] = (byte) (data & 0xff);bytes[1] = (byte) ((data & 0xff00) >> 8);return bytes;}/** * char-->byte[] * @param data * @return */public static byte[] getBytes(char data){byte[] bytes = new byte[2];bytes[0] = (byte) (data);bytes[1] = (byte) (data >> 8);return bytes;}/** * int-->byte[] * @param data * @return */public static byte[] getBytes(int data){byte[] bytes = new byte[4];bytes[0] = (byte) (data & 0xff);bytes[1] = (byte) ((data & 0xff00) >> 8);bytes[2] = (byte) ((data & 0xff0000) >> 16);bytes[3] = (byte) ((data & 0xff000000) >> 24);return bytes;}/** * long-->byte[] * @param data * @return */public static byte[] getBytes(long data){byte[] bytes = new byte[8];bytes[0] = (byte) (data & 0xff);bytes[1] = (byte) ((data >> 8) & 0xff);bytes[2] = (byte) ((data >> 16) & 0xff);bytes[3] = (byte) ((data >> 24) & 0xff);bytes[4] = (byte) ((data >> 32) & 0xff);bytes[5] = (byte) ((data >> 40) & 0xff);bytes[6] = (byte) ((data >> 48) & 0xff);bytes[7] = (byte) ((data >> 56) & 0xff);return bytes;}/** * float-->byte[] * @param data * @return */public static byte[] getBytes(float data){int intBits = Float.floatToIntBits(data);return getBytes(intBits);}/** * double-->byte[] * @param data * @return */public static byte[] getBytes(double data){long intBits = Double.doubleToLongBits(data);return getBytes(intBits);}/** * string-->byte[] 按字符集 * @param data * @return */public static byte[] getBytes(String data, String charsetName){Charset charset = Charset.forName(charsetName);return data.getBytes(charset);}/** * string-->byte[] utf-8 * @param data * @return */public static byte[] getBytes(String data){return getBytes(data, "utf-8");}/** * byte[]-->short * @param data * @return */public static short getShort(byte[] bytes){return (short) ((0xff & bytes[0]) | (0xff00 & (bytes[1] << 8)));}/** * byte[]-->short * @param data * @return */public static char getChar(byte[] bytes){return (char) ((0xff & bytes[0]) | (0xff00 & (bytes[1] << 8)));}/** * byte[]-->int * @param data * @return */public static int getInt(byte[] bytes){return (0xff & bytes[0]) | (0xff00 & (bytes[1] << 8)) | (0xff0000 & (bytes[2] << 16)) | (0xff000000 & (bytes[3] << 24));}/** * byte[]-->long * @param data * @return */public static long getLong(byte[] bytes){return(0xffL & bytes[0]) | (0xff00L & ((long)bytes[1] << 8)) | (0xff0000L & ((long)bytes[2] << 16)) | (0xff000000L & ((long)bytes[3] << 24))| (0xff00000000L & ((long)bytes[4] << 32)) | (0xff0000000000L & ((long)bytes[5] << 40)) | (0xff000000000000L & ((long)bytes[6] << 48)) | (0xff00000000000000L & ((long)bytes[7] << 56));}/** * byte[]-->float * @param data * @return */public static float getFloat(byte[] bytes){return Float.intBitsToFloat(getInt(bytes));}/** * byte[]-->double * @param data * @return */public static double getDouble(byte[] bytes){long l = getLong(bytes);System.out.println(l);return Double.longBitsToDouble(l);}/** * byte[]-->String  按字符集 * @param data * @return */public static String getString(byte[] bytes, String charsetName){return new String(bytes, Charset.forName(charsetName));}/** * byte[]-->String * @param data * @return */public static String getString(byte[] bytes){return getString(bytes, "utf-8");}