<script src="https://cdn.bootcss.com/crypto-js/3.1.9-1/crypto-js.min.js"></script>  
<script>
      const iframe = document.querySelector('#test-iframe');
      function getUnionLoginParams() {
        const nonce = 'fb4706';
        const opfid = '572115641423875';//开发者中心获取
        const uid = '18576626619';
        const secret = '92cba47a143a0c22ee7';//开发者中心获取
        const timestamp = Date.now().toString();
        const params = { opfid, secret, uid, nonce, timestamp };
        const query = Object.keys(params)
          .sort(
            (key1, key2) => key1.charCodeAt(0) - key2.charCodeAt(0)
          )
          .reduce((str, key) => (str += `${key}=${params[key]}&`), '')
          .slice(0, -1);
        const signature = CryptoJS.SHA1(query).toString(CryptoJS.enc.Hex);
        return { nonce, opfid, uid, timestamp, signature };
      }

      const params = getUnionLoginParams();
      let loginUrl = 'https://open.rabbitpre.com/union-login.html';
      loginUrl += `?nonce=${params.nonce}`;
      loginUrl += `&opfid=${params.opfid}`;
      loginUrl += `&uid=${params.uid}`;
      loginUrl += `&timestamp=${params.timestamp}`;
      loginUrl += `&signature=${params.signature}`;
      loginUrl += `&redirecturl=${encodeURIComponent('https://www.rabbitpre.com/template/multipage.html')}`;
      iframe.setAttribute('src', loginUrl);
      
    </script>

SortedMap<String, String> map = new TreeMap<String, String>();
map.put("opfid", opfid);
map.put("nonce", nonce);
map.put("timestamp", timestamp);
map.put("secret", secret);
map.put("uid", uid);
String signature = SHA1Util.createSHA1Sign(map);
System.err.println("--signature-->>" + signature);
companyId=1&nonce=123456&opfid=65499870709224111111&secret=2222222222222222&timestamp=1625194549051&uid=1000010001
--signature→>c1e0401e25926f3d42de2f03fc989eec4f15b01d

/**
 * 通过request.data获取body的内容，这个是postman内置变量
 * 常用内置参数如下：
 * request 获取请求的参数，包括头和请求体
 * responseHeaders 返回值的header
 * responseBody 返回值的body
 * responseCode 返回值的http code
 */


var params = pm.request.url.query.members;
var map = new Map();
map.set("secret","89908acc57d64110b0b805977244d5c6")
var timestamp = Date.parse(new Date());
map.set("timestamp",timestamp)
for (var i=0; i<params.length; i++)
{
    // console.log(params[i])
    if(params[i].key=="signature"){
        continue
    }
    if(params[i].key=="timestamp"){
        // let time2 = new Date().getTime(); 
        console.log("------------------")
        // map.set(params[i].key,time2)
        continue
    }
    map.set(params[i].key,params[i].value)
}
console.log(map)
var arrayObj=Array.from(map);
arrayObj.sort(function(a,b){return a[0].localeCompare(b[0])})
//字段重新组装拼接
var tmp='';
for(var i=0;i<arrayObj.length;i++){
    tmp += arrayObj[i][0]+"="+arrayObj[i][1]+"&";
}
tmp = tmp.substring(0,tmp.lastIndexOf("&"))
console.log("tmp ---->" + tmp);

//生成签名串：这里使用SHA1算法并使用十六进制编码
//CryptoJS-为JavaScript提供了各种各样的加密算法
//作者：CryptoJS<>(https://code.google.com/p/crypto-js/)
// var signHmacSHA1=CryptoJS.SHA1(tmp).toString(CryptoJS.enc.Hex).toUpperCase();
var signHmacSHA1=CryptoJS.SHA1(tmp).toString(CryptoJS.enc.Hex);
console.log("sign ---->" + signHmacSHA1);

//放入环境变量
//pm.environment.set("sha1msg",signHmacSHA1)
postman.setGlobalVariable("signature", signHmacSHA1);
postman.setGlobalVariable("timestamp", timestamp);