package com.kmall.admin.utils.oms;


import java.util.*;

/**
 * @author zengjunlin
 * @version 1.0
 * 2017-10-25 11:04
 */
public class OmsSign {


    /**
     * 加签
     * @param params      请求参数
     * @param secretKey  密钥
     * @return 返回签名字串
     */
    public static final String sign(Map<String,String> params, String secretKey){
        StringBuffer sign = new StringBuffer();
        //按升序排列
        List<Map.Entry<String, String>> infoIds = new ArrayList<Map.Entry<String, String>>(params.entrySet());
        Collections.sort(infoIds, new Comparator<Map.Entry<String, String>>() {
            public int compare(Map.Entry<String, String> o1, Map.Entry<String, String> o2) {
                return (o1.getKey()).toString().compareTo(o2.getKey());
            }
        });
        for(Map.Entry<String, String> m : infoIds){
            sign.append(m.getKey()+ m.getValue());
        }
        sign.insert(0,secretKey);
        return MD5Util.getMd5(sign.toString());
    }


    /**
     * 验签
     * @param signature  签名字串
     * @param params      请求参数
     * @param secretKey  密钥
     * @return 签名通过返回true ，不通过返回false
     */
    public static final boolean verify(String signature, Map<String,String> params, String secretKey){
       String sign = sign(params,secretKey);
       if(signature.equals(sign)){
            return true;
       }
        return false;
    }


}