接口请求生成签名时不对参数url code review by shixiang

@@ -190,7 +190,7 @@ export default class Request {
 
 		allParams = trimObject(allParams);	// 去除首尾空格
 
-		let paramsPair = queryString.stringify(allParams)
+		let paramsPair = queryString.stringify(allParams, {encode: false});
 		let client_secret = md5(paramsPair);
 
 		delete allParams.private_key;