js生成接口请求参数签名加密
定义规则：将所有参数字段按首字母排序， 拼接成key1 = value1 & key2 = value2的格式，再在末尾拼接上key = appSecret， 再做MD5加密生成sign，方法如下：
function getSign(params, kAppKey, kAppSecret) { ???if (typeof params == "string") { ???????return paramsStrSort(params); ???} else if (typeof params == "object") { ???????var arr = []; ???????for (var i in params) { ???????????arr.push((i + "=" + params[i])); ???????} ???????return paramsStrSort(arr.join(("&"))); ???}}function paramsStrSort(paramsStr) { ???var url = paramsStr + "&appKey=" + kAppKey; ???var urlStr = url.split("&").sort().join("&"); ???var newUrl = urlStr + '&key=' + kAppSecret; ???return md5(newUrl);}调用：
var params = "xid=" + xid + "&type=" + type + "&pageSize=" + pageSize + "&pageNo=" + pageNo;var sign = getSign(params, kAppKey, kAppSecret);或:
var paramsObj = { xid: xid, pageSize: pageSize, type: type, pageNo: pageNo };var sign = getSign(paramsObj, kAppKey, kAppSecret);kAppKey，kAppSecret为常量，一般由后端定义好！签名加密方法依托MD5!
GitHub地址