[开发测试]postman 配置参数自动签名

后端接口为了避免参数被篡改，有参数签名的校验，为方便使用postman测试接口，可在postman设置自动签名

第一步：创建collection

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第二步：配置全局参数，设置 appKey、appSecret等全局参数

第三步：配置脚本，编辑collection，选择Pre-request Scripts，输入脚本

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var appKey = pm.environment.get("appKey");
var appSecret = pm.environment.get("appSecret");
var queryParam = pm.request.url.query.members;
var timestamp = new Date().getTime();

let param = JSON.parse("{}");

for (let i in queryParam){
    param[queryParam[i].key] = queryParam[i].value;
}
param['timestamp'] = timestamp;
var keys = [];
for (let k in param){
    if (k == 'sign'){
        continue;
    }
    keys.push(k);
}
//排序
keys.sort();

//取value
var sign = '';
sign = sign + appSecret;
for (let k of keys){
    sign = sign+ (k + '' + encodeURIComponent(param[k]));
}
sign = sign+appSecret;
console.log(sign);
sign = CryptoJS.MD5(sign).toString();
console.log(sign);
pm.environment.set('sign',sign);
pm.environment.set('timestamp',timestamp);
pm.environment.set('appKey',encodeURIComponent(appKey));