springboot对接微信小程序支付以及回调详细代码
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在本文中,我们将深入探讨如何使用SpringBoot框架与微信小程序进行支付对接,并实现支付回调功能。这个过程涉及多个步骤,包括配置、接口开发、微信支付API的调用以及回调处理。我们将按照描述中的"非常详细,完整流程代码"来逐步解析。 我们需要在SpringBoot项目中引入必要的依赖。对于微信支付,我们需要使用微信官方提供的SDK,通常可以在微信开放平台下载。这些依赖通常包含在Maven或Gradle的pom.xml或build.gradle文件中。 ```xml <!-- Maven 例子 --> <dependency> <groupId>com.github.binarywang</groupId> <artifactId>weixin-java-pay</artifactId> <version>最新版本号</version> </dependency> ``` 或者 ```groovy // Gradle 例子 implementation 'com.github.binarywang:weixin-java-pay:最新版本号' ``` 接下来,我们需要配置微信支付的相关参数,如AppID、商户号、密钥等。这些信息可以在微信商户平台获取。这些参数可以配置在SpringBoot的application.yml或application.properties文件中。 ```yaml wxpay: appid: your_appid mch_id: your_mch_id key: your_key api-secret: your_api_secret ``` 然后,我们需要创建一个服务类来处理支付相关的业务逻辑。这个类会包含调用微信支付API的方法,例如统一下单接口(统一下单API会返回预支付交易会话标识,用于后续的支付请求)。 ```java @Service public class WeChatPayService { @Autowired private WxPayMpApi wxPayApi; public WxPayOrderResult createOrder(String openId, String body, double totalFee) { // 创建统一下单请求对象 WxPayUnifiedOrderRequest orderRequest = new WxPayUnifiedOrderRequest(); orderRequest.setOutTradeNo(UUID.randomUUID().toString()); orderRequest.setBody(body); orderRequest.setTotalFee(totalFee * 100); // 将元转换为分 orderRequest.setSpbillCreateIp(request.getRemoteAddr()); orderRequest.setNotifyUrl("你的支付回调URL"); orderRequest.setTradeType("JSAPI"); orderRequest.setOpenid(openId); // 调用统一下单API return wxPayApi.unifiedOrder(orderRequest); } } ``` 当用户在小程序端完成支付后,微信服务器会向我们在统一下单时设置的`notify_url`发起POST请求,这就是支付回调。我们需要在对应的服务中处理这个回调,验证支付结果并更新订单状态。 ```java @PostMapping("/notify") public String paymentNotify(@RequestBody String xmlData) { WxPayNotificationResponse notifyResponse = wxPayApi.handlePayNotify(xmlData, true); if (notifyResponse.isReturnCodeSuccess() && notifyResponse.isSuccess()) { // 验证成功,处理订单状态 String out_trade_no = notifyResponse.getOutTradeNo(); Order order = orderRepository.findByOutTradeNo(out_trade_no); if (order != null) { order.setStatus(OrderStatus.PAID); orderRepository.save(order); return "success"; } } return "fail"; } ``` 在小程序端,我们需要调用微信的JSAPI接口完成支付。这通常在商品详情页面点击“支付”按钮后触发。在前端获取预支付交易会话标识后,调用`wx.requestPayment`发起支付请求。 ```javascript wx.requestPayment({ nonceStr: nonceStr, // 预支付交易会话标识 package: packageValue, // 统一下单接口返回的prepay_id参数值 signType: 'MD5', // 签名类型,默认为'MD5' timeStamp: timestamp, // 时间戳 paySign: paySign, // 签名 success: function(res) { // 支付成功后的回调 }, fail: function(err) { // 支付失败后的回调 }, }); ``` 以上就是使用SpringBoot对接微信小程序支付以及回调的完整流程。这个过程中,我们从创建支付订单到接收和处理支付回调,都进行了详细讲解。确保所有步骤正确执行,就可以实现一个功能完善的微信支付系统。在实际开发中,还需要考虑错误处理、支付状态查询等额外功能,以提供更健壮的支付体验。
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- niexiaobo2022-01-18说好的支付呢,这样骗积分,缺德的事都能干出来
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