postman实现COS签名

//获取起始时间戳

let timestamp = parseInt(new Date().getTime()/1000);

//获取截止时间戳

let timestamp2 = timestamp + 3600;

//获取method

let method = pm.request.method.toString().toLowerCase();

//获取整个url

let arrUrl = pm.request.url

//通过url获取uri

let uuu = arrUrl.toString().split('//')

let start = uuu[1].indexOf("/");

let end = uuu[1].indexOf("?");

if (end==-1){

end = uuu[1].length;

}

let uri = uuu[1].substring(start,end);//stop省略，截取从start开始到结尾的所有字符

//签名的必备参数

let qAk = pm.globals.get("SecretId");

let SecretKey = pm.globals.get("SecretKey");

//计算签名（很多项目中的签名，原始字符串还会加入请求参数）

let qSignAlgorithm = 'sha1';

let qSignTime = timestamp + ';' + timestamp2;

let qKeyTime = timestamp + ';' + timestamp2;

let signKey = CryptoJS.HmacSHA1(qKeyTime,SecretKey).toString();

// 步骤二：构成 FormatString

let formatString = [method, uri, '', '', '',].join('\n');

// 步骤三：计算 StringToSign

let stringToSign = ['sha1', qSignTime, CryptoJS.SHA1(formatString).toString(),''].join('\n');

// 步骤四：计算 Signature

let Signature = CryptoJS.HmacSHA1(stringToSign, signKey).toString();

// 步骤五：构造 Authorization

let authorization = [

'q-sign-algorithm=' + qSignAlgorithm,

'q-ak=' + qAk,

'q-sign-time=' + qSignTime,

'q-key-time=' + qKeyTime,

'q-header-list='+'',

'q-url-param-list='+'',

'q-signature=' + Signature

].join('&');

pm.environment.set("Authorization", authorization);