83f7336e
 zhaowg
增加方格地磁状态获取空闲车位数据推送
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package com.zteits.job.util;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class TransUtil {
public static String bytes2HexString(byte[] b,int size){
StringBuffer result = new StringBuffer();
String hex;
for (int i=0; i<size;i++){
hex=Integer.toHexString(b[i] & 0xFF);
if(hex.length() == 1){
hex = '0' + hex;
}
result.append(hex.toUpperCase());
}
return result.toString();
}
/**
* @Title:hexString2Bytes @Description:16进制字符串转字节数组 @param src
* 16进制字符串 @return 字节数组 @throws
*/
public static byte[] hexString2Bytes(String src) {
int l = src.length() / 2;
byte[] ret = new byte[l];
for (int i = 0; i < l; i++) {
ret[i] = (byte) Integer.valueOf(src.substring(i * 2, i * 2 + 2), 16).byteValue();
}
return ret;
}
public static String MD5(String str){
byte[] b;
try {
MessageDigest md5 = MessageDigest.getInstance("MD5");
b = md5.digest(str.getBytes("utf-8"));
return bytes2HexString(b,b.length);
} catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
e.printStackTrace();
}
return null;
}
/**
* 将十进制转换成十六进制
* @param i
* @return
*/
public static String toHexString(Integer i){
StringBuilder sb = new StringBuilder();
sb.append(Integer.toHexString(i));
while (sb.length()<8){
sb.insert(0, "0");
}
return sb.toString();
}
/**
* 将十进制转换成十六进制
* @param i
* @return
*/
public static String toHexString(Long i){
StringBuilder sb = new StringBuilder();
sb.append(Long.toHexString(i));
while (sb.length()<8){
sb.insert(0, "0");
}
return sb.toString();
}
public static String getMac(String str){
StringBuilder sb = new StringBuilder(str);
while(sb.length() % 16 != 0){
sb.append(0);
}
String mac=null;
for(int i=0;i<sb.length();i=i+16){
if(mac == null){
mac=sb.substring(i, i+16);
}else{
mac = Long.toHexString(Long.parseLong(mac,16)^Long.parseLong(sb.substring(i, i+16),16));
}
}
StringBuilder sb1 = new StringBuilder(mac);
while(sb1.length()<16){
sb1.insert(0, "0");
}
return sb1.toString();
}
/**
* 16进制字符串转换为字符串
*
* @param s
* @return
*/
public static String hexStringToString(String s) {
if (s == null || s.equals("")) {
return null;
}
s = s.replace(" ", "");
byte[] baKeyword = new byte[s.length() / 2];
for (int i = 0; i < baKeyword.length; i++) {
try {
baKeyword[i] = (byte) (0xff & Integer.parseInt(
s.substring(i * 2, i * 2 + 2), 16));
} catch (Exception e) {
e.printStackTrace();
}
}
try {
s = new String(baKeyword, "utf-8");
new String();
} catch (Exception e1) {
e1.printStackTrace();
}
return s;
}
}
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