常用的数据转换工具类

开发过程中常需进行数据转换,尤其是对接硬件设备时。硬件设备通讯常用字节数组、十六进制数据、二进制数据等。

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在开发过程中有时会经常需要做数据转换,最经常使用的就是对接一些硬件设备。硬件设备通讯一般都是使用字节数组,十六进制数据,二进制数据等。

/*
 * Create 7/18 by xwj
 * 数据处理,进制转换等常用工具类
 */
public class DataTreater {

public static String byte2String(byte[] bytes, int icnt) {
    //转化byte[]为常用参数十进制字符串
    Integer tempData = Integer.valueOf(formatBytes(bytes), 16);
    String tempStr = tempData.toString();

    for (int i = 0; i < icnt - tempData.toString().length(); ++i) {
        tempStr = "0" + tempStr;
    }

    return tempStr;
}

public static String hexToinvalue(byte[] src, int offset) {
    //十六进制数组转化为十进制小数
    int invalue = bytesToInt(src, offset);
    return IntStrToAmountStr(invalue + "");
}

public static int bytesToInt(byte[] src, int offset) {
    int value;
    value = (int) ((src[offset] & 0xFF)
            | ((src[offset + 1] & 0xFF) << 8));
    return value;
}

public static int bytesToInt(byte src) {
    int value;
    value = (int) (src & 0xFF);
    return value;
}

public static String BCD2String(byte[] bytes) {
    StringBuffer temp = new StringBuffer(bytes.length * 2);

    for (int i = 0; i < bytes.length; ++i) {
        temp.append((byte) ((bytes[i] & 240) >>> 4));
        temp.append((byte) (bytes[i] & 15));
    }

    return temp.toString();
}

public static byte decimalToBinary(int decimalSource) {
    BigInteger bi = new BigInteger(String.valueOf(decimalSource));
    return bit2byte(bi.toString(2));
}

public static byte bit2byte(String bString) {
    byte result = 0;
    int i = bString.length() - 1;

    for (int j = 0; i >= 0; ++j) {
        result = (byte) ((int) ((double) result + (double) Byte.parseByte(String.valueOf(bString.charAt(i))) * Math.pow(2.0D, (double) j)));
        --i;
    }

    return result;
}

public static String HexStrToAmountStr(String s) {
    long Amount = Long.parseLong(s, 16);
    String d = String.valueOf(Amount / 100L);
    if (Amount % 100L < 10L) {
        d = d + ".0" + Amount % 100L;
    } else {
        d = d + "." + Amount % 100L;
    }

    return d;
}

public static String IntStrToAmountStr(String intstr) {
    int amount = Integer.valueOf(intstr);
    String d = String.valueOf(amount / 10);
    d = d + "." + amount % 10;

    return d;
}

public static String toStringHex(String s) {
    byte[] baKeyword = new byte[s.length() / 2];

    for (int i = 0; i < baKeyword.length; ++i) {
        try {
            baKeyword[i] = (byte) (255 & Integer.parseInt(s.substring(i * 2, i * 2 + 2), 16));
        } catch (Exception var5) {
            var5.printStackTrace();
        }
    }

    try {
        s = new String(baKeyword, "utf-8");
    } catch (Exception var4) {
        var4.printStackTrace();
    }

    return s;
}

public static short[] toShortArray(byte[] src) {
    //byte数组转化为short数组
    int count = src.length >> 1;
    short[] dest = new short[count];
    for (int i = 0; i < count; i++) {
        dest[i] = (short) (((src[i * 2 + 1] & 0x00FF) << 8) | (src[2 * i] & 0x00FF));
    }
    return dest;
}

public static short toShort(String hexstr) {
    return (short) Integer.parseInt(hexstr, 16);
}

public static int byteArrayToShort(byte[] b) {
    return (b[0] << 8)
            + (b[1] & 0xFF);
}

public static short byteToShort(byte high, byte low) {
    return (short) (((high << 8) & 0xFF00) | (low & 0xFF));
}

public static String bytesToHexString(byte[] bytes) {
    StringBuilder sb = new StringBuilder();

    for (int i = 0; i < bytes.length; ++i) {
        String hex = Integer.toHexString(255 & bytes[i]);
        if (hex.length() == 1) {
            sb.append('0');
        }

        sb.append(hex);
    }

    return sb.toString();
}

public static byte[] hexStringToBytes(String hexString) {
    if (hexString != null && !hexString.equals("")) {
        hexString = hexString.toUpperCase();
        int length = hexString.length() / 2;
        char[] hexChars = hexString.toCharArray();
        byte[] d = new byte[length];

        for (int i = 0; i < length; ++i) {
            int pos = i * 2;
            d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
        }

        return d;
    } else {
        return null;
    }
}

private static byte charToByte(char c) {
    return (byte) "0123456789ABCDEF".indexOf(c);
}

public static String formatBytes(byte[] p_arrBytes) {
    //转化byte[]为十六进制字符串
    return formatBytes(p_arrBytes, p_arrBytes.length, "");
}

public static String byteToHexStr(byte b) {
    //字节转换为16进制字符
    String hex = Integer.toHexString(b & 0xFF);
    if (hex.length() == 1) {
        hex = '0' + hex;
    }
    return hex.toUpperCase();
}

public static void printHexString(byte[] b) {
    //字节数组转换为16进制字符串
    for (int i = 0; i < b.length; i++) {
        byte hex = b[i];
    }
}


public static String toHexString(byte b) {
    String s = Integer.toHexString(b & 0xFF);
    if (s.length() == 1) {
        return "0" + s;
    } else {
        return s;
    }
}

public static String formatBytes(byte p_Bytes) {
    StringBuffer sbResult = new StringBuffer();
    int intValue = p_Bytes;
    if (p_Bytes < 0) {
        intValue = p_Bytes + 256;
    }

    String strHexString = Integer.toHexString(intValue);
    if (strHexString.length() == 1) {
        sbResult.append("0");
    }

    sbResult.append(strHexString);
    return sbResult.toString();
}

public static String formatBytes(byte[] p_arrBytes, int p_intLength, String p_strSeparator) {
    StringBuffer sbResult = new StringBuffer();

    for (int intIndex = 0; intIndex < p_intLength; ++intIndex) {
        int intValue = p_arrBytes[intIndex];
        if (intValue < 0) {
            intValue += 256;
        }

        String strHexString = Integer.toHexString(intValue);
        if (strHexString.length() == 1) {
            sbResult.append("0");
            sbResult.append(p_strSeparator);
        }

        sbResult.append(strHexString);
    }

    return sbResult.toString();
}

public static byte[] compress2To1InBytes(String p_strValue) throws Exception {
    int intLength = p_strValue.length();
    int intCounter = 0;
    int intResultLength = intLength / 2 + (intLength % 2 != 0 ? 1 : 0);
    byte[] arrResult = new byte[intResultLength];

    for (int intIndex = intLength; intIndex >= 1; intIndex -= 2) {
        int intValue;
        if (intIndex == 1) {
            intValue = Integer.parseInt(p_strValue.substring(intIndex - 1, intIndex));
        } else {
            intValue = Integer.parseInt(p_strValue.substring(intIndex - 2, intIndex));
        }

        arrResult[intResultLength - intCounter - 1] = (byte) (intValue + 33);
        ++intCounter;
    }

    return arrResult;
}

public static String compress2To1(String p_strValue) throws Exception {
    return compress2To1(p_strValue, "iso8859_1");
}

public static String compress2To1(String p_strValue, String p_strEncoding) throws Exception {
    return new String(compress2To1InBytes(p_strValue), p_strEncoding);
}
}
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