最近做了一个小程序用到了微信支付及零钱提现功能。
准备工作，开发之前，我们需要有下面这些东西：
- appId
- 密钥(小程序配置界面)
- 商户号
- api密钥(商家后台自己设置)
1，小程序代码实现
<view class='pay_btn_view'>
<button class='pay_btn' bindtap='btn_to_pay'
data-keyword="{{hmhDataInfo}}">立即购买</button>
</view>小程序js实现部分
btn_to_pay: function (e) {
//显示加载数据
this.setData({
loadingHidden: false
});
var paymoney = e.currentTarget.dataset.keyword.serviceprice;
console.info(" === " + this.data.pay_state + " , money = " + paymoney);
var content = "";
var type = 0;
if (this.data.pay_state==0){
content = "你选择了月";
type = 1;
} else if (this.data.pay_state==1){
content = "你选择了三个月";
type = 2;
} else if (this.data.pay_state==2){
content = "你选择了年";
type = 3;
} else if (this.data.pay_state == 3) {
content = "你选择了终生";
type = 4;
}
var openid = wx.getStorageSync("openId");
if (openid != '') {
//关闭授权层
this.setData({
isRuleTrue: false,
})
} else {
//显示弹出层
this.setData({
isRuleTrue: true
})
}
var that = this;
wx.request({
url: getApp().data.servsers + '/dp/sys/wxpay/topay?price=' + paymoney + '&open_id=' + openid + '&type=' + type,
method: "GET",
header: {
'content-type': 'application/text'
},
success: function (res) {
that.setData({
loadingHidden: true
});
var nonceStr = res.data.userInfoPay.nonceStr;
var packages = res.data.userInfoPay.packages;
var pay_price = res.data.userInfoPay.pay_price;
var sign = res.data.userInfoPay.sign;
var timeStamp = res.data.userInfoPay.timeStamp;
//只有status 为 0 才可以正常支付
var status = res.data.userInfoPay.status;
if(status==0){
wx.requestPayment({
'timeStamp': timeStamp,
'nonceStr': nonceStr,
'package': packages,
'signType': 'MD5',
'paySign': sign,
'success': function (succ) {
wx.showModal({
title: '提示',
content: '支付成功',
success: function (e) {
if(e.confirm){
console.info(" success === ");
//跳转到用户信息页面
setTimeout(function () {
wx.switchTab({
url: '../myinfo/myinfo'
})
}, 500)
}else if(e.cancel){
console.info(" cancel === ");
}
},//接口调用成功
fail: function () {
}, //接口调用失败的回调函数
complete: function () {
} //接口调用结束的回调函数
});
},
'fail': function (err) {
wx.showModal({
title: '提示',
content: '支付失败'
});
},
'complete': function (comp) {
}
})
}else{
wx.showModal({
title: '提示',
content: '支付验证失败'
});
}
}
})
},2，后台接口实现
/****
* 小程序端支付接口
* oZvme4q2Oi7Dz3FChXc4G_3kqw28
* @return
* @throws Exception
*/
@RequestMapping("/topay")
public R wxUserPay(HttpServletRequest request, HttpServletResponse response, HttpSession httpSession) throws Exception {
logger.info("wechat pay #####################################################");
String pay_price = request.getParameter("price");
String open_id = request.getParameter("open_id");
String type = request.getParameter("type");
String orderNo = Sha1Util.getOrderNumber();
Map<String, Object> resultInfo = new HashMap<String, Object>();
if(!"".equals(open_id)&&open_id!=null){
logger.info("wxUserPay >>>>> "+pay_price+" , open_id = "+open_id+ " , orderNo = "+orderNo);
//先查询用户然后，生成订单保存到数据库（状态为待支付）
HmhOrderInfoEntity orderInfoEntity = new HmhOrderInfoEntity();
orderInfoEntity.setCreateTime(DateUtils.format(new Date(),DateUtils.DATE_TIME_PATTERN));
orderInfoEntity.setOpenid(open_id);
orderInfoEntity.setPayPrice(pay_price);
orderInfoEntity.setStatus(0); //等待付款
orderInfoEntity.setOrderid(orderNo);
orderInfoEntity.setOrderType(0);
orderInfoEntity.setType(Integer.parseInt(type));
hmhOrderInfoService.saveHmhOrderInfo(orderInfoEntity);
//金额转化为分为单位
float sessionmoney = Float.parseFloat(pay_price);
String finalmoney = String.format("%.2f", sessionmoney);
finalmoney = finalmoney.replace(".", "");
//商户相关资料
String appid = HmhConfig.APP_ID;
String appsecret = HmhConfig.APP_secret;
String partner = HmhConfig.pertenr;
String partnerkey = HmhConfig.pertnerKey;
String currTime = TenpayUtil.getCurrTime();
//8位日期
String strTime = currTime.substring(8, currTime.length());
//四位随机数
String strRandom = TenpayUtil.buildRandom(4) + "";
//10位序列号,可以自行调整。
String strReq = strTime + strRandom;
//商户号
String mch_id = partner;
//子商户号 非必输
//String sub_mch_id="";
//设备号 非必输
String device_info="";
//随机数
String nonce_str = strReq;
//商品描述
//String body = describe;
//商品描述根据情况修改
String body = "xxx管理服务费";
//附加数据
String attach = "";
//商户订单号
String out_trade_no = orderNo;
int intMoney = Integer.parseInt(finalmoney);
//总金额以分为单位，不带小数点
int total_fee = intMoney;
//订单生成的机器 IP
String spbill_create_ip = request.getRemoteAddr();
//订 单 生 成 时 间 非必输
// String time_start ="";
//订单失效时间 非必输
// String time_expire = "";
//商品标记 非必输
// String goods_tag = "";
//这里notify_url是 支付完成后微信发给该链接信息，可以判断会员是否支付成功，改变订单状态等。
String notify_url =wxpay_notify;
String trade_type = "JSAPI";
//非必输
SortedMap<String, String> packageParams = new TreeMap<String, String>();
packageParams.put("appid", appid);
packageParams.put("mch_id", mch_id);
packageParams.put("nonce_str", nonce_str);
packageParams.put("body", body);
packageParams.put("attach", attach);
packageParams.put("out_trade_no", out_trade_no);
//这里写的金额为1 分到时修改
packageParams.put("total_fee", String.valueOf(total_fee));
packageParams.put("spbill_create_ip", spbill_create_ip);
packageParams.put("notify_url", notify_url);
packageParams.put("trade_type", trade_type);
packageParams.put("openid", open_id);
RequestHandler reqHandler = new RequestHandler(request, response);
reqHandler.init(appid, appsecret, partnerkey);
String sign = reqHandler.createSign(packageParams);
String xml="<xml>"+
"<appid>"+appid+"</appid>"+
"<mch_id>"+mch_id+"</mch_id>"+
"<nonce_str>"+nonce_str+"</nonce_str>"+
"<sign>"+sign+"</sign>"+
"<body><![CDATA["+body+"]]></body>"+
"<attach>"+attach+"</attach>"+
"<out_trade_no>"+out_trade_no+"</out_trade_no>"+
//金额，这里写的1 分到时修改
"<total_fee>"+String.valueOf(total_fee)+"</total_fee>"+
"<spbill_create_ip>"+spbill_create_ip+"</spbill_create_ip>"+
"<notify_url>"+notify_url+"</notify_url>"+
"<trade_type>"+trade_type+"</trade_type>"+
"<openid>"+open_id+"</openid>"+
"</xml>";
String createOrderURL = HmhConfig.unifiedorder;
String prepay_id="";
try {
prepay_id = new GetWxOrderno().getPayNo(createOrderURL, xml);
logger.info("prepay_id >>>>> "+prepay_id);
if("".equals(prepay_id)){
resultInfo.put("status",3);
resultInfo.put("msg","统一支付接口获取预支付订单出错");
}
} catch (Exception e) {
e.printStackTrace();
}
SortedMap<String, String> finalpackage = new TreeMap<String, String>();
String appid2 = appid;
String timestamp = Sha1Util.getTimeStamp();
String nonceStr2 = nonce_str;
String prepay_id2 = "prepay_id="+prepay_id;
String packages = prepay_id2;
finalpackage.put("appId", appid2);
finalpackage.put("timeStamp", timestamp);
finalpackage.put("nonceStr", nonceStr2);
finalpackage.put("package", packages);
finalpackage.put("signType", "MD5");
String finalsign = reqHandler.createSign(finalpackage);
Map<String, Object> map= new HashMap<String, Object>();
map.put("status", 0);
map.put("appId", appid2);
map.put("timeStamp", timestamp);
map.put("nonceStr", nonceStr2);
map.put("packages", packages);
map.put("sign", finalsign);
map.put("pay_price", pay_price);
map.put("open_id", open_id);
resultInfo.put("userInfoPay",map);
resultInfo.put("status",0);
resultInfo.put("msg","支付成功");
}else{
logger.info("用户open_id为空");
resultInfo.put("status",1);
resultInfo.put("msg","用户open_id为空");
}
return R.ok(1,resultInfo);
}小程序提现接口java代码实现
//提现到零钱
//https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?chapter=14_2
@RequestMapping("/transfer")
public R transfer(HttpServletRequest request, HttpServletResponse response) {
String openid = request.getParameter("openid");
String amount = request.getParameter("amount");
Map<String, Object> resultInfo = new HashMap<String, Object>();
String tk_order_id = Sha1Util.getTXOrderNumber();
String uuid = UUID.randomUUID().toString().trim().replaceAll("-", "");
System.out.println(" == >> "+tk_order_id);
String mch_appid = HmhConfig.APP_ID; //商户账号appid
String mchid = HmhConfig.pertenr; //商户号
String nonce_str = uuid; //随机32位字符串
String partner_trade_no = tk_order_id; //商户订单号
// String openid = "";//用户openid
String check_name = "NO_CHECK"; //校验用户姓名选项 (NO_CHECK：不校验真实姓名 FORCE_CHECK：强校验真实姓名)
String re_user_name = "xxx"; //收款用户姓名
// String amount = ""; //企业付款金额，单位为分
String desc = "xxx"; //企业付款备注
String spbill_create_ip = "10.2.3.11"; //Ip地址
SortedMap<String, String> packageParams = new TreeMap<String, String>();
packageParams.put("mch_appid", mch_appid);
packageParams.put("mchid", mchid);
packageParams.put("nonce_str", nonce_str);
packageParams.put("partner_trade_no", partner_trade_no);
packageParams.put("openid", openid);
packageParams.put("check_name", check_name);
packageParams.put("re_user_name", re_user_name);
packageParams.put("amount", amount);
packageParams.put("desc", desc);
packageParams.put("spbill_create_ip", spbill_create_ip);
RequestHandler reqHandler = new RequestHandler(request, response);
reqHandler.init(mch_appid, HmhConfig.APP_secret, HmhConfig.pertnerKey);
String sign = reqHandler.createSign(packageParams); ////签名
String transferXml = "<xml>" +
"<mch_appid>"+mch_appid+"</mch_appid>" +
"<mchid>"+mchid+"</mchid>" +
"<nonce_str>"+nonce_str+"</nonce_str>" +
"<partner_trade_no>"+partner_trade_no+"</partner_trade_no>" +
"<openid>"+openid+"</openid>" +
"<check_name>"+check_name+"</check_name>" +
"<re_user_name>"+re_user_name+"</re_user_name>" +
"<amount>"+amount+"</amount>" +
"<desc>"+desc+"</desc>" +
"<spbill_create_ip>"+spbill_create_ip+"</spbill_create_ip>" +
"<sign>"+sign+"</sign>" +
"</xml>";
String result= new GetWxOrderno().getPayNo(HmhConfig.transferurl, transferXml);
resultInfo.put("status",1);
resultInfo.put("msg",result);
return R.ok(1,resultInfo);
}
注意，小程序提现需要配置证书
当发现调用不起来支付时请检查，域名，商户后台配置支付目录。
微信支付文档：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_1
