663 lines
17 KiB
Plaintext
663 lines
17 KiB
Plaintext
package com.nationalelectirc.utils;
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import java.math.BigInteger;
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public class Util
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{
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/**
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* 整形转换成网络传输的字节流（字节数组）型数据
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*
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* @param num 一个整型数据
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* @return 4个字节的自己数组
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*/
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public static byte[] intToBytes(int num)
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{
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byte[] bytes = new byte[4];
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bytes[0] = (byte) (0xff & (num >> 0));
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bytes[1] = (byte) (0xff & (num >> 8));
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bytes[2] = (byte) (0xff & (num >> 16));
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bytes[3] = (byte) (0xff & (num >> 24));
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return bytes;
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}
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/**
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* 四个字节的字节数据转换成一个整形数据
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*
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* @param bytes 4个字节的字节数组
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* @return 一个整型数据
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*/
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public static int byteToInt(byte[] bytes)
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{
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int num = 0;
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int temp;
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temp = (0x000000ff & (bytes[0])) << 0;
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num = num | temp;
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temp = (0x000000ff & (bytes[1])) << 8;
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num = num | temp;
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temp = (0x000000ff & (bytes[2])) << 16;
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num = num | temp;
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temp = (0x000000ff & (bytes[3])) << 24;
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num = num | temp;
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return num;
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}
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/**
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* 长整形转换成网络传输的字节流（字节数组）型数据
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*
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* @param num 一个长整型数据
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* @return 4个字节的自己数组
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*/
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public static byte[] longToBytes(long num)
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{
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byte[] bytes = new byte[8];
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for (int i = 0; i < 8; i++)
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{
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bytes[i] = (byte) (0xff & (num >> (i * 8)));
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}
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return bytes;
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}
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/**
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* 大数字转换字节流（字节数组）型数据
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*
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* @param n
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* @return
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*/
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public static byte[] byteConvert32Bytes(BigInteger n)
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{
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byte tmpd[] = (byte[])null;
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if(n == null)
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{
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return null;
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}
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if(n.toByteArray().length == 33)
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{
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tmpd = new byte[32];
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System.arraycopy(n.toByteArray(), 1, tmpd, 0, 32);
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}
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else if(n.toByteArray().length == 32)
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{
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tmpd = n.toByteArray();
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}
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else
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{
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tmpd = new byte[32];
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for(int i = 0; i < 32 - n.toByteArray().length; i++)
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{
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tmpd[i] = 0;
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}
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System.arraycopy(n.toByteArray(), 0, tmpd, 32 - n.toByteArray().length, n.toByteArray().length);
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}
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return tmpd;
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}
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/**
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* 换字节流（字节数组）型数据转大数字
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*
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* @param b
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* @return
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*/
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public static BigInteger byteConvertInteger(byte[] b)
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{
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if (b[0] < 0)
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{
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byte[] temp = new byte[b.length + 1];
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temp[0] = 0;
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System.arraycopy(b, 0, temp, 1, b.length);
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return new BigInteger(temp);
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}
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return new BigInteger(b);
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}
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/**
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* 根据字节数组获得值(十六进制数字)
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*
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* @param bytes
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* @return
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*/
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public static String getHexString(byte[] bytes)
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{
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return getHexString(bytes, true);
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}
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/**
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* 根据字节数组获得值(十六进制数字)
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*
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* @param bytes
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* @param upperCase
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* @return
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*/
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public static String getHexString(byte[] bytes, boolean upperCase)
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{
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String ret = "";
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for (int i = 0; i < bytes.length; i++)
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{
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ret += Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1);
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}
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return upperCase ? ret.toUpperCase() : ret;
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}
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/**
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* 打印十六进制字符串
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*
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* @param bytes
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*/
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public static void printHexString(byte[] bytes)
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{
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for (int i = 0; i < bytes.length; i++)
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{
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String hex = Integer.toHexString(bytes[i] & 0xFF);
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if (hex.length() == 1)
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{
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hex = '0' + hex;
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}
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//System.out.print("0x" + hex.toUpperCase() + ",");
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}
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//System.out.println("");
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}
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/**
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* Convert hex string to byte[]
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*
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* @param hexString
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* the hex string
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* @return byte[]
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*/
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public static byte[] hexStringToBytes(String hexString)
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{
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if (hexString == null || hexString.equals(""))
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{
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return null;
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}
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hexString = hexString.toUpperCase();
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int length = hexString.length() / 2;
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char[] hexChars = hexString.toCharArray();
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byte[] d = new byte[length];
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for (int i = 0; i < length; i++)
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{
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int pos = i * 2;
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d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
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}
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return d;
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}
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/**
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* Convert char to byte
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*
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* @param c
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* char
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* @return byte
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*/
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public static byte charToByte(char c)
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{
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return (byte) "0123456789ABCDEF".indexOf(c);
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}
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/**
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* 用于建立十六进制字符的输出的小写字符数组
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*/
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private static final char[] DIGITS_LOWER = {'0', '1', '2', '3', '4', '5',
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'6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
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/**
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* 用于建立十六进制字符的输出的大写字符数组
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*/
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private static final char[] DIGITS_UPPER = {'0', '1', '2', '3', '4', '5',
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'6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
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/**
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* 将字节数组转换为十六进制字符数组
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*
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* @param data byte[]
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* @return 十六进制char[]
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*/
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public static char[] encodeHex(byte[] data) {
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return encodeHex(data, true);
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}
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/**
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* 将字节数组转换为十六进制字符数组
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*
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* @param data byte[]
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* @param toLowerCase <code>true</code> 传换成小写格式 ， <code>false</code> 传换成大写格式
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* @return 十六进制char[]
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*/
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public static char[] encodeHex(byte[] data, boolean toLowerCase) {
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return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
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}
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/**
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* 将字节数组转换为十六进制字符数组
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*
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* @param data byte[]
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* @param toDigits 用于控制输出的char[]
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* @return 十六进制char[]
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*/
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protected static char[] encodeHex(byte[] data, char[] toDigits) {
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int l = data.length;
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char[] out = new char[l << 1];
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// two characters form the hex value.
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for (int i = 0, j = 0; i < l; i++) {
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out[j++] = toDigits[(0xF0 & data[i]) >>> 4];
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out[j++] = toDigits[0x0F & data[i]];
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}
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return out;
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}
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/**
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* 将字节数组转换为十六进制字符串
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*
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* @param data byte[]
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* @return 十六进制String
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*/
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public static String encodeHexString(byte[] data) {
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return encodeHexString(data, true);
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}
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/**
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* 将字节数组转换为十六进制字符串
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*
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* @param data byte[]
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* @param toLowerCase <code>true</code> 传换成小写格式 ， <code>false</code> 传换成大写格式
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* @return 十六进制String
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*/
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public static String encodeHexString(byte[] data, boolean toLowerCase) {
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return encodeHexString(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
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}
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/**
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* 将字节数组转换为十六进制字符串
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*
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* @param data byte[]
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* @param toDigits 用于控制输出的char[]
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* @return 十六进制String
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*/
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protected static String encodeHexString(byte[] data, char[] toDigits) {
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return new String(encodeHex(data, toDigits));
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}
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/**
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* 将十六进制字符数组转换为字节数组
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*
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* @param data 十六进制char[]
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* @return byte[]
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* @throws RuntimeException 如果源十六进制字符数组是一个奇怪的长度，将抛出运行时异常
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*/
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public static byte[] decodeHex(char[] data) {
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int len = data.length;
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if ((len & 0x01) != 0) {
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throw new RuntimeException("Odd number of characters.");
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}
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byte[] out = new byte[len >> 1];
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// two characters form the hex value.
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for (int i = 0, j = 0; j < len; i++) {
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int f = toDigit(data[j], j) << 4;
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j++;
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f = f | toDigit(data[j], j);
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j++;
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out[i] = (byte) (f & 0xFF);
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}
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return out;
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}
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/**
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* 将十六进制字符转换成一个整数
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*
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* @param ch 十六进制char
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* @param index 十六进制字符在字符数组中的位置
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* @return 一个整数
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* @throws RuntimeException 当ch不是一个合法的十六进制字符时，抛出运行时异常
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*/
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protected static int toDigit(char ch, int index) {
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int digit = Character.digit(ch, 16);
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if (digit == -1) {
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throw new RuntimeException("Illegal hexadecimal character " + ch
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+ " at index " + index);
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}
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return digit;
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}
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/**
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* 数字字符串转ASCII码字符串
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*
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* @param String
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* 字符串
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* @return ASCII字符串
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*/
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public static String StringToAsciiString(String content) {
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String result = "";
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int max = content.length();
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for (int i = 0; i < max; i++) {
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char c = content.charAt(i);
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String b = Integer.toHexString(c);
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result = result + b;
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}
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return result;
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}
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/**
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* 十六进制转字符串
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*
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* @param hexString
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* 十六进制字符串
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* @param encodeType
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* 编码类型4：Unicode，2：普通编码
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* @return 字符串
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*/
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public static String hexStringToString(String hexString, int encodeType) {
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String result = "";
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int max = hexString.length() / encodeType;
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for (int i = 0; i < max; i++) {
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char c = (char) hexStringToAlgorism(hexString
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.substring(i * encodeType, (i + 1) * encodeType));
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result += c;
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}
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return result;
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}
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/**
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* 十六进制字符串装十进制
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*
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* @param hex
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* 十六进制字符串
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* @return 十进制数值
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*/
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public static int hexStringToAlgorism(String hex) {
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hex = hex.toUpperCase();
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int max = hex.length();
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int result = 0;
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for (int i = max; i > 0; i--) {
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char c = hex.charAt(i - 1);
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int algorism = 0;
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if (c >= '0' && c <= '9') {
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algorism = c - '0';
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} else {
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algorism = c - 55;
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}
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result += Math.pow(16, max - i) * algorism;
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}
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return result;
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}
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/**
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* 十六转二进制
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*
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* @param hex
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* 十六进制字符串
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* @return 二进制字符串
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*/
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public static String hexStringToBinary(String hex) {
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hex = hex.toUpperCase();
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String result = "";
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int max = hex.length();
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for (int i = 0; i < max; i++) {
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char c = hex.charAt(i);
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switch (c) {
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case '0':
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result += "0000";
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break;
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case '1':
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result += "0001";
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break;
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case '2':
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result += "0010";
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break;
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case '3':
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result += "0011";
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break;
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case '4':
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result += "0100";
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break;
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case '5':
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result += "0101";
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break;
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case '6':
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result += "0110";
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break;
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case '7':
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result += "0111";
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break;
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case '8':
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result += "1000";
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break;
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case '9':
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result += "1001";
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break;
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case 'A':
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result += "1010";
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break;
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case 'B':
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result += "1011";
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break;
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case 'C':
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result += "1100";
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break;
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case 'D':
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result += "1101";
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break;
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case 'E':
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result += "1110";
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break;
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case 'F':
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result += "1111";
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break;
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}
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}
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return result;
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}
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/**
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* ASCII码字符串转数字字符串
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*
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* @param String
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* ASCII字符串
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* @return 字符串
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*/
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public static String AsciiStringToString(String content) {
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String result = "";
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int length = content.length() / 2;
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for (int i = 0; i < length; i++) {
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String c = content.substring(i * 2, i * 2 + 2);
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int a = hexStringToAlgorism(c);
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char b = (char) a;
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String d = String.valueOf(b);
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result += d;
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}
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return result;
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}
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/**
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* 将十进制转换为指定长度的十六进制字符串
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*
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* @param algorism
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* int 十进制数字
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* @param maxLength
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* int 转换后的十六进制字符串长度
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* @return String 转换后的十六进制字符串
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*/
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public static String algorismToHexString(int algorism, int maxLength) {
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String result = "";
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result = Integer.toHexString(algorism);
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if (result.length() % 2 == 1) {
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result = "0" + result;
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}
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return patchHexString(result.toUpperCase(), maxLength);
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}
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/**
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* 字节数组转为普通字符串（ASCII对应的字符）
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*
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* @param bytearray
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* byte[]
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* @return String
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*/
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public static String byteToString(byte[] bytearray) {
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String result = "";
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char temp;
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int length = bytearray.length;
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for (int i = 0; i < length; i++) {
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temp = (char) bytearray[i];
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result += temp;
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}
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return result;
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}
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/**
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* 二进制字符串转十进制
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*
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* @param binary
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* 二进制字符串
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* @return 十进制数值
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*/
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public static int binaryToAlgorism(String binary) {
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int max = binary.length();
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int result = 0;
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for (int i = max; i > 0; i--) {
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char c = binary.charAt(i - 1);
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int algorism = c - '0';
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result += Math.pow(2, max - i) * algorism;
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}
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return result;
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}
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/**
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* 十进制转换为十六进制字符串
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*
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* @param algorism
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* int 十进制的数字
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* @return String 对应的十六进制字符串
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*/
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public static String algorismToHEXString(int algorism) {
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String result = "";
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result = Integer.toHexString(algorism);
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if (result.length() % 2 == 1) {
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result = "0" + result;
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}
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result = result.toUpperCase();
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return result;
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}
|
||
|
||
/**
|
||
* HEX字符串前补0，主要用于长度位数不足。
|
||
*
|
||
* @param str
|
||
* String 需要补充长度的十六进制字符串
|
||
* @param maxLength
|
||
* int 补充后十六进制字符串的长度
|
||
* @return 补充结果
|
||
*/
|
||
static public String patchHexString(String str, int maxLength) {
|
||
String temp = "";
|
||
for (int i = 0; i < maxLength - str.length(); i++) {
|
||
temp = "0" + temp;
|
||
}
|
||
str = (temp + str).substring(0, maxLength);
|
||
return str;
|
||
}
|
||
|
||
/**
|
||
* 将一个字符串转换为int
|
||
*
|
||
* @param s
|
||
* String 要转换的字符串
|
||
* @param defaultInt
|
||
* int 如果出现异常,默认返回的数字
|
||
* @param radix
|
||
* int 要转换的字符串是什么进制的,如16 8 10.
|
||
* @return int 转换后的数字
|
||
*/
|
||
public static int parseToInt(String s, int defaultInt, int radix) {
|
||
int i = 0;
|
||
try {
|
||
i = Integer.parseInt(s, radix);
|
||
} catch (NumberFormatException ex) {
|
||
i = defaultInt;
|
||
}
|
||
return i;
|
||
}
|
||
|
||
/**
|
||
* 将一个十进制形式的数字字符串转换为int
|
||
*
|
||
* @param s
|
||
* String 要转换的字符串
|
||
* @param defaultInt
|
||
* int 如果出现异常,默认返回的数字
|
||
* @return int 转换后的数字
|
||
*/
|
||
public static int parseToInt(String s, int defaultInt) {
|
||
int i = 0;
|
||
try {
|
||
i = Integer.parseInt(s);
|
||
} catch (NumberFormatException ex) {
|
||
i = defaultInt;
|
||
}
|
||
return i;
|
||
}
|
||
|
||
/**
|
||
* 十六进制串转化为byte数组
|
||
*
|
||
* @return the array of byte
|
||
*/
|
||
public static byte[] hexToByte(String hex)
|
||
throws IllegalArgumentException {
|
||
if (hex.length() % 2 != 0) {
|
||
throw new IllegalArgumentException();
|
||
}
|
||
char[] arr = hex.toCharArray();
|
||
byte[] b = new byte[hex.length() / 2];
|
||
for (int i = 0, j = 0, l = hex.length(); i < l; i++, j++) {
|
||
String swap = "" + arr[i++] + arr[i];
|
||
int byteint = Integer.parseInt(swap, 16) & 0xFF;
|
||
b[j] = new Integer(byteint).byteValue();
|
||
}
|
||
return b;
|
||
}
|
||
|
||
/**
|
||
* 字节数组转换为十六进制字符串
|
||
*
|
||
* @param b
|
||
* byte[] 需要转换的字节数组
|
||
* @return String 十六进制字符串
|
||
*/
|
||
public static String byteToHex(byte b[]) {
|
||
if (b == null) {
|
||
throw new IllegalArgumentException(
|
||
"Argument b ( byte array ) is null! ");
|
||
}
|
||
String hs = "";
|
||
String stmp = "";
|
||
for (int n = 0; n < b.length; n++) {
|
||
stmp = Integer.toHexString(b[n] & 0xff);
|
||
if (stmp.length() == 1) {
|
||
hs = hs + "0" + stmp;
|
||
} else {
|
||
hs = hs + stmp;
|
||
}
|
||
}
|
||
return hs.toUpperCase();
|
||
}
|
||
|
||
public static byte[] subByte(byte[] input, int startIndex, int length) {
|
||
byte[] bt = new byte[length];
|
||
for (int i = 0; i < length; i++) {
|
||
bt[i] = input[i + startIndex];
|
||
}
|
||
return bt;
|
||
}
|
||
}
|