1. 商户号为99999，商户秘钥`secret/key`="05351f5ad630ffd7aa47692556a9d707"
   
2. 
   
3. js 示例
   
4. ```
   
5. const crypto = require('crypto')
   
6. 
   
7. function md5sha512Sign(str) {
   
8.   let sha512 = crypto.createHash('sha512').update(str).digest('hex')
   
9.   let md5 = crypto.createHash('md5').update(sha512).digest('hex')
   
10.   return md5
    
11. }
    
12. 
    
13. md5sha512Sign('service_id=99999&key=05351f5ad630ffd7aa47692556a9d707')
    
14. // 572544a336d72fc70e4d1e85301363ab
    
15. ```

复制代码

楼主，你可以参考下