java 微信支付demo

jav 微信支付demo PayReq req = new PayReq(); req.appId = Constants.APP_ID; req.partnerId = Constants.PARTNER_ID; req.prepayId = result.prepayId; req.nonceStr = nonceStr; req.timeStamp = String.valueOf(timeStamp); req.packageValue = "Sign=Wxpay";//"Sign=" +