关于java:微信JSAPI支付-签名问题

jsapi微信底层就不过多形容了，次要记录一下，查了很多材料，发现微信返回参数不能间接返给前端应用，还须要进行一次签名，不然前台就会提醒签名谬误

            // dic微信返回的            Map<String, String> reqData = new HashMap<>();            String timeStamp = String.valueOf(WXPayUtil.getCurrentTimestamp());            String prepay_id = "prepay_id=" + dic.get("prepay_id");            reqData.put("appId", dic.get("appid"));            reqData.put("timeStamp", timeStamp);            reqData.put("nonceStr", dic.get("nonce_str"));            reqData.put("package", prepay_id);            reqData.put("signType", WXPayConstants.MD5);

应用MD5进行签名

String paySign = WXPayUtil.generateSignature(reqData, "微信商户号的key", WXPayConstants.SignType.MD5);

返回前端参数

Map<String, String> data = new HashMap<>();data.put("appId", dic.get("appid"));data.put("timeStamp", timeStamp);data.put("nonceStr", dic.get("nonce_str"));data.put("package", prepay_id);data.put("paySign", paySign);data.put("signType", WXPayConstants.MD5);data.put("mch_id", dic.get("mch_id"));data.put("nvcOrderNumber", dic.get("out_trade_no"));

前端调起领取

形容比较简单，只是记录，仅供参考