php签名验证

function getSign($params){
    $appSecret="abcsd";
    // 1. 对加密数组进行字典排序
    foreach ($params as $key=>$value){
        $arr[$key] = $key;
    }
    sort($arr,SORT_STRING);
//    var_dump($arr);
    $str = $appSecret;
    foreach ($arr as $k => $v) {
        $str = $str.$arr[$k].$params[$v];
    }
    $restr = $str.$appSecret;
    $sign = strtoupper(md5($restr));
    return $sign;
}

$params=[];

$params["aaaaaaa"]="sss";
$params["ava"]="sss";
$params["aba"]="sss";
$params["1"]="3rd";
$params["qidong"]="123";
$params["99"]="sss";

java签名

import java.util.*;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Main {
   public static void main(String[] args) {
      String appSecret = "abcsd";
      HashMap< String, String> hMap =  new HashMap< String, String>();
      hMap.put("aaaaaaa","sss");
      hMap.put("ava","sss");
      hMap.put("aba","sss");
      hMap.put("1", "3rd");
      hMap.put("qidong","123");
      hMap.put("99","sss");
        Set set=hMap.keySet();
        Object[] arr=set.toArray();
        Arrays.sort(arr);
        String str = appSecret;
         for (int i = 0;i<arr.length;i++){
            str=str+arr[i]+hMap.get(arr[i]);
         }
         str=str+appSecret;
//           System.out.print(str);
         String result=MD5(str);
         System.out.print(result.toUpperCase());
   }

     private static String MD5(String sourceStr) {
       String result = "";
       try {
         MessageDigest md = MessageDigest.getInstance("MD5");
         md.update(sourceStr.getBytes());
         byte b[] = md.digest();
         int i;
         StringBuffer buf = new StringBuffer("");
         for (int offset = 0; offset < b.length; offset++) {
           i = b[offset];
           if (i < 0)
             i += 256;
           if (i < 16)
             buf.append("0");
           buf.append(Integer.toHexString(i));
         }
         result = buf.toString();
//          System.out.println("MD5(" + sourceStr + ",32) = " + result);
//          System.out.println("MD5(" + sourceStr + ",16) = " + buf.toString().substring(8, 24));
       } catch (NoSuchAlgorithmException e) {
         System.out.println(e);
       }
       return result;
     }
}