php md5于java得到的结果不同

Question

问题描述:
因接口对接时,对方只提供了java的接口,调用接口时需要md5加密签名,一直签名验证失败,最后发现是双方Md5的结果不同

求助有没有将字符串转为java md5的方法?国内和国外搜索出来的找到java转为PHP的?

str="aId=1&action=queryWeizhang&carNo=粤A12345&carType=02&mId=1&key"

java的结果:385400B2F19F85CA5314AC521C7990A1
php的结果 :5DA911F422619237A2085332861DDC15

已解决:
$param = array_map('urlencode', $param);

    $param['aId'] = $this->aId;
    $param['sign'] = $this->sign($param);
    ksort($param);
    $base64 = base64_encode(json_encode($param));

Answer 1

MD5跟语言无关，测试了一下，JAVA也是5DA911F422619237A2085332861DDC15

import java.io.*;
import java.security.MessageDigest;

class test  
{
    private static String MD5(String s) {
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            byte[] bytes = md.digest(s.getBytes("utf-8"));
            return toHex(bytes);
        }
        catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

private static String toHex(byte[] bytes) {

    final char[] HEX_DIGITS = "0123456789ABCDEF".toCharArray();
    StringBuilder ret = new StringBuilder(bytes.length * 2);
    for (int i=0; i<bytes.length; i++) {
        ret.append(HEX_DIGITS[(bytes[i] >> 4) & 0x0f]);
        ret.append(HEX_DIGITS[bytes[i] & 0x0f]);
    }
    return ret.toString();
}

    public static void main (String[] args) throws java.lang.Exception
    {
        System.out.println(test.MD5("aId=1&action=queryWeizhang&carNo=粤A12345&carType=02&mId=1&key"));
    }
}

Answer 2

搜一搜，好多相关内容的啊
JAVA 和 PHP md5 加密后的值不一致