mirror of
https://gitee.com/java110/WechatOwnerService.git
synced 2026-02-23 21:36:38 +08:00
75 lines
2.3 KiB
JavaScript
75 lines
2.3 KiB
JavaScript
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import conf from '../conf/config.js'
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import md5 from '../utils/md5Util.js'
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/*
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* 生成订单信息
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* @params orderInfo: any 后端返回的数据，格式和上面一样
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*/
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export function getPayInfo (orderInfo) {
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let time = new Date(),
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let timestamp = time.getTime().toString().substr(0, 10), // 时间戳
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let noncestr = randomSrt(true, 10, 20), // 随机数
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let key = conf.appPayKey, // 加密Key，微信支付填写的key
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payInfo = {
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appid: orderInfo.appid,
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noncestr,
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package: 'Sign=WXPay',
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partnerid: orderInfo.partnerid,
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prepayid: orderInfo.prepayid,
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timestamp: Number(timestamp)
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}
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// 键值对按照ASCII码从小到大排序生成类似：appid=xxx&body=xx&device_info=1000
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let keyValueStr = mapObjToKeyValue(payInfo, true);
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// 插入加密Key到最后
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let strSignTemp = `${keyValueStr}&key=${key}`;
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// 真正的二次加密
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let sign = md5(strSignTemp).toUpperCase().substr(0, 30);
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console.log(sign) // 可以去微信支付文档做校验
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payInfo.sign = sign;
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// 返回字符串给uniapp调起支付用
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return payInfo;
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}
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/*
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* 生成指定的随机字符串
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* @params isRandomLength: boolean 是否在min ~ max生成随机长度
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* @params min: number 最小长度
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* @params max: number 最大长度
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*/
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export function randomSrt(isRandomLength, min, max) {
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let str = "",
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range = min;
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const arr = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k',
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'l',
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'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',
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'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'
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];
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// 随机产生
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if (isRandomLength) {
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range = Math.round(Math.random() * (max - min)) + min;
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}
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for (var i = 0; i < range; i++) {
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let pos = Math.round(Math.random() * (arr.length - 1));
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str += arr[pos];
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}
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return str;
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},
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/*
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* 根据object生成key value字符串
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* @params obj: any 要map的对象
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* @params isSort: boolean 是否根据ASCII字典排序
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*/
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export function mapObjToKeyValue(obj, isSort = false) {
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let keys = Object.keys(obj);
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let str = "";
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if (isSort) keys.sort();
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keys.forEach(key => {
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if (obj.hasOwnProperty(key)) {
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str += `${key}=${obj[key]}&`;
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}
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});
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return str.replace(/&$/, "");
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} |