创建支付订单代码实现
<h3>创建PayOrderForm.java</h3>
<pre><code class="language-java">@Data
@ApiModel(value = "订单付款的表单")
public class PayOrderForm {
@ApiModelProperty(value = "订单ID")
@Min(1)
private Integer orderId;
}</code></pre>
<h3>编写WxController中的创建付款方法，用于创建支付订单</h3>
<pre><code class="language-java">@Login
@PostMapping("/microAppPayOrder")
@ApiOperation("小程序付款")
public R microAppPayOrder(@RequestBody PayOrderForm form, @RequestHeader HashMap header) {
ValidatorUtils.validateEntity(form);
String token = header.get("token").toString();
Long userId = Long.parseLong(jwtUtils.getClaimByToken(token).getSubject());
int orderId = form.getOrderId();
UserEntity user = new UserEntity();
user.setUserId(userId);
QueryWrapper wrapper = new QueryWrapper(user);
long count = userService.count(wrapper);
if (count == 0) {
return R.error("用户不存在");
}
String openId = userService.getOne(wrapper).getOpenId();
OrderEntity order = new OrderEntity();
order.setUserId(userId.intValue());
order.setId(orderId);
order.setStatus(1);
wrapper = new QueryWrapper(order);
count = orderService.count(wrapper);
if (count == 0) {
return R.error("不是有效的订单");
}
//验证购物券是否有效
//验证团购活动是否有效
order = new OrderEntity();
order.setId(orderId);
wrapper = new QueryWrapper(order);
order = orderService.getOne(wrapper);
//向微信平台发出请求，创建支付订单
String amount = order.getAmount().multiply(new BigDecimal("100")).intValue() + "";
try {
WXPay wxPay = new WXPay(myWXPayConfig);
HashMap map = new HashMap();
map.put("nonce_str", WXPayUtil.generateNonceStr()); //随机字符串
map.put("body", "订单备注");
map.put("out_trade_no", order.getCode());
map.put("total_fee", amount);
map.put("spbill_create_ip", "127.0.0.1");
map.put("notify_url", "https://127.0.0.1/test");
map.put("trade_type", "JSAPI");
map.put("openid", openId);
Map<String, String> result = wxPay.unifiedOrder(map);
String prepayId = result.get("prepay_id");
System.out.println(prepayId);
if (prepayId != null) {
order.setPrepayId(prepayId);
order.setPaymentType(1);
UpdateWrapper updateWrapper = new UpdateWrapper();
updateWrapper.eq("id", order.getId());
orderService.update(order, updateWrapper);
//生成数字签名
map.clear();
map.put("appId", appId);
String timeStamp = new Date().getTime() + "";
map.put("timeStamp", timeStamp);
String nonceStr = WXPayUtil.generateNonceStr();
map.put("nonceStr", nonceStr);
map.put("package", "prepay_id=" + prepayId);
map.put("signType", "MD5");
String paySign = WXPayUtil.generateSignature(map, key);
return R.ok().put("package", "prepay_id=" + prepayId)
.put("timeStamp", timeStamp)
.put("nonceStr", nonceStr)
.put("paySign", paySign);
}
else {
return R.error("支付订单创建失败");
}
}
catch (Exception e) {
e.printStackTrace();
return R.error("微信支付模块故障");
}
}</code></pre>
<h3>编写order.vue</h3>
<pre><code class="language-javascript">uni.request({
url: that.url.wx.microAppPayOrder,
method: "POST",
header: {
"token": uni.getStorageSync("token")
},
data: {
"orderId": id
},
success: function(resp) {
// console.log(resp)
let timeStamp = resp.data.timeStamp
let nonceStr = resp.data.nonceStr
let pk = resp.data.package
let paySign = resp.data.paySign
}
})</code></pre>