CharParseUtils.java
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package com.sunvote.util;
/**
* Created by Elvis on 2017/8/15 15:03
* Email:Eluis@psunsky.com
* 版权所有：长沙中天电子设计开发有限公司
* Description: 工具包
*/
public class CharParseUtils {
/**
* 字符串转换成十六进制字符串
* @return String 每个Byte之间空格分隔，如: [61 6C 6B]
*/
public static String str2HexStr(String str, boolean space)
{
char[] chars = "0123456789ABCDEF".toCharArray();
StringBuilder sb = new StringBuilder("");
byte[] bs = str.getBytes();
int bit;
for (int i = 0; i < bs.length; i++)
{
bit = (bs[i] & 0x0f0) >> 4;
sb.append(chars[bit]);
bit = bs[i] & 0x0f;
sb.append(chars[bit]);
if (space) {
sb.append(' ');
}
}
return sb.toString().trim();
}
public static boolean hexStrCheck(String hexStr)
{
String str = "0123456789ABCDEF";
char[] hexs = hexStr.toCharArray();
int i = 0;
for (i = 0; i < hexs.length; i++) {
if (str.indexOf(hexs[i]) == -1) {
break;
}
}
return (i == hexs.length);
}
/**
* 十六进制转换字符串
* @return String 对应的字符串
*/
public static String hexStr2Str(String hexStr)
{
String str = "0123456789ABCDEF";
char[] hexs = hexStr.toCharArray();
byte[] bytes = new byte[hexStr.length() / 2];
int n;
for (int i = 0; i < bytes.length; i++)
{
n = str.indexOf(hexs[2 * i]) * 16;
n += str.indexOf(hexs[2 * i + 1]);
bytes[i] = (byte) (n & 0xff);
}
return new String(bytes);
}
/**
* bytes转换成十六进制字符串
* @return String 每个Byte值之间空格分隔
*/
public static String byte2HexStr(byte[] b, boolean space)
{
String stmp="";
StringBuilder sb = new StringBuilder("");
for (int n=0;n<b.length;n++)
{
stmp = Integer.toHexString(b[n] & 0xFF);
sb.append((stmp.length()==1)? "0"+stmp : stmp);
if (space) {
sb.append(" ");
}
}
return sb.toString().toUpperCase().trim();
}
/**
* bytes字符串转换为Byte值
* @return byte[]
*/
public static byte[] hexStr2Bytes(String src)
{
int m=0,n=0;
int l=src.length()/2;
System.out.println(l);
byte[] ret = new byte[l];
for (int i = 0; i < l; i++)
{
m=i*2+1;
n=m+1;
ret[i] = Byte.decode("0x" + src.substring(i*2, m) + src.substring(m,n));
}
return ret;
}
/**
* String的字符串转换成unicode的String
* @return String 每个unicode之间无分隔符
* @throws Exception
*/
public static String strToUnicode(String strText)
throws Exception
{
char c;
StringBuilder str = new StringBuilder();
int intAsc;
String strHex;
for (int i = 0; i < strText.length(); i++)
{
c = strText.charAt(i);
intAsc = (int) c;
strHex = Integer.toHexString(intAsc);
if (intAsc > 128)
str.append("\\u" + strHex);
else // 低位在前面补00
str.append("\\u00" + strHex);
}
return str.toString();
}
/**
* unicode的String转换成String的字符串
* @return String 全角字符串
*/
public static String unicodeToString(String hex)
{
int t = hex.length() / 6;
StringBuilder str = new StringBuilder();
for (int i = 0; i < t; i++)
{
String s = hex.substring(i * 6, (i + 1) * 6);
// 高位需要补上00再转
String s1 = s.substring(2, 4) + "00";
// 低位直接转
String s2 = s.substring(4);
// 将16进制的string转为int
int n = Integer.valueOf(s1, 16) + Integer.valueOf(s2, 16);
// 将int转换为字符
char[] chars = Character.toChars(n);
str.append(new String(chars));
}
return str.toString();
}
}