JAVA与JS在MD5上问题

摘要：问题在做项目时发现，与对同一字符串进行验签时总是不一致解决方案代码获得摘要算法的对象使用指定的字节更新摘要获得密文把密文转换成十六进制的字符串形式代码

在做项目时发现，JS与JAVA对同一字符串进行MD5验签时总是不一致

1.JAVA代码

package org.bearfly.test.md5;
  
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
  
public class MD5Utils {
 public static void main(String[] args){
 System.out.println(getMd5String(""));
 System.out.println(MD5("good"));
 }
  
  
 public final static String MD5(String s) {
 char hexDigits[] = { "0", "1", "2", "3", "4",
    "5", "6", "7", "8", "9",
    "A", "B", "C", "D", "E", "F" };
 try {
  byte[] btInput = s.getBytes();
 //获得MD5摘要算法的 MessageDigest 对象
  MessageDigest mdInst = MessageDigest.getInstance("MD5");
 //使用指定的字节更新摘要
  mdInst.update(btInput);
 //获得密文
  byte[] md = mdInst.digest();
 //把密文转换成十六进制的字符串形式
  int j = md.length;
  char str[] = new char[j * 2];
  int k = 0;
  for (int i = 0; i < j; i++) {
  byte byte0 = md[i];
  str[k++] = hexDigits[byte0 >>> 4 & 0xf];
  str[k++] = hexDigits[byte0 & 0xf];
  }
  return new String(str);
 }
 catch (Exception e) {
  e.printStackTrace();
  return null;
 }
 }
  
  
  
 public static String getMd5String(String str){
 MessageDigest messageDigest = null; 
   
 try { 
  messageDigest = MessageDigest.getInstance("MD5"); 
  
  messageDigest.reset(); 
  
  messageDigest.update(str.getBytes("UTF-8")); 
 } catch (NoSuchAlgorithmException e) { 
  System.out.println("NoSuchAlgorithmException caught!"); 
  System.exit(-1); 
 } catch (UnsupportedEncodingException e) { 
  e.printStackTrace(); 
 } 
  
 byte[] byteArray = messageDigest.digest(); 
  
 StringBuffer md5StrBuff = new StringBuffer(); 
  
 for (int i = 0; i < byteArray.length; i++) {  
  if (Integer.toHexString(0xFF & byteArray[i]).length() == 1) 
  md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i])); 
  else
  md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i])); 
 } 
  
 return md5StrBuff.toString(); 
 }
}

js代码：

var MD5 = function (string) { 
 
function RotateLeft(lValue, iShiftBits) { 
 return (lValue<>>(32-iShiftBits)); 
} 
 
function AddUnsigned(lX,lY) { 
 var lX4,lY4,lX8,lY8,lResult; 
 lX8 = (lX & 0x80000000); 
 lY8 = (lY & 0x80000000); 
 lX4 = (lX & 0x40000000); 
 lY4 = (lY & 0x40000000); 
 lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF); 
 if (lX4 & lY4) { 
 return (lResult ^ 0x80000000 ^ lX8 ^ lY8); 
 } 
 if (lX4 | lY4) { 
 if (lResult & 0x40000000) { 
  return (lResult ^ 0xC0000000 ^ lX8 ^ lY8); 
 } else { 
  return (lResult ^ 0x40000000 ^ lX8 ^ lY8); 
 } 
 } else { 
 return (lResult ^ lX8 ^ lY8); 
 } 
} 
 
function F(x,y,z) { return (x & y) | ((~x) & z); } 
function G(x,y,z) { return (x & z) | (y & (~z)); } 
function H(x,y,z) { return (x ^ y ^ z); } 
function I(x,y,z) { return (y ^ (x | (~z))); } 
 
function FF(a,b,c,d,x,s,ac) { 
 a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac)); 
 return AddUnsigned(RotateLeft(a, s), b); 
}; 
 
function GG(a,b,c,d,x,s,ac) { 
 a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac)); 
 return AddUnsigned(RotateLeft(a, s), b); 
}; 
 
function HH(a,b,c,d,x,s,ac) { 
 a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac)); 
 return AddUnsigned(RotateLeft(a, s), b); 
}; 
 
function II(a,b,c,d,x,s,ac) { 
 a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac)); 
 return AddUnsigned(RotateLeft(a, s), b); 
}; 
 
function ConvertToWordArray(string) { 
 var lWordCount; 
 var lMessageLength = string.length; 
 var lNumberOfWords_temp1=lMessageLength + 8; 
 var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64; 
 var lNumberOfWords = (lNumberOfWords_temp2+1)*16; 
 var lWordArray=Array(lNumberOfWords-1); 
 var lBytePosition = 0; 
 var lByteCount = 0; 
 while ( lByteCount < lMessageLength ) { 
 lWordCount = (lByteCount-(lByteCount % 4))/4; 
 lBytePosition = (lByteCount % 4)*8; 
 lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<>>29; 
 return lWordArray; 
}; 
 
function WordToHex(lValue) { 
 var WordToHexValue="",WordToHexValue_temp="",lByte,lCount; 
 for (lCount = 0;lCount<=3;lCount++) { 
 lByte = (lValue>>>(lCount*8)) & 255; 
 WordToHexValue_temp = "0" + lByte.toString(16); 
 WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2); 
 } 
 return WordToHexValue; 
}; 
 
function Utf8Encode(string) { 
 string = string.replace(/
/g,"
"); 
 var utftext = ""; 
 
 for (var n = 0; n < string.length; n++) { 
 
 var c = string.charCodeAt(n); 
 
 if (c < 128) { 
  utftext += String.fromCharCode(c); 
 } 
 else if((c > 127) && (c < 2048)) { 
  utftext += String.fromCharCode((c >> 6) | 192); 
  utftext += String.fromCharCode((c & 63) | 128); 
 } 
 else { 
  utftext += String.fromCharCode((c >> 12) | 224); 
  utftext += String.fromCharCode(((c >> 6) & 63) | 128); 
  utftext += String.fromCharCode((c & 63) | 128); 
 } 
 
 } 
 
 return utftext; 
}; 
 
var x=Array(); 
var k,AA,BB,CC,DD,a,b,c,d; 
var S11=7, S12=12, S13=17, S14=22; 
var S21=5, S22=9 , S23=14, S24=20; 
var S31=4, S32=11, S33=16, S34=23; 
var S41=6, S42=10, S43=15, S44=21; 
 
string = Utf8Encode(string); 
 
x = ConvertToWordArray(string); 
 
a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476; 
 
for (k=0;k