【微信支付】springboot |
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【微信支付】springboot
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上篇文章我们已经结束了微信支付准备工作以及JSAPI调起支付
文章地址：https://blog.csdn.net/ssdadasd15623/article/details/134684556 接下来实现，付款后的查单操作查询订单分为微信订单号查询以及商户订单号查询，这里使用商户订单号，也就是自己的系统的订单号 查看微信支付文档-商户订单号查询订单https://pay.weixin.qq.com/docs/merchant/apis/jsapi-payment/query-by-out-trade-no.html 在请求接口时，注意⚠️：请求参数内的Authorization参数需要提前生成 https://pay.weixin.qq.com/docs/merchant/development/interface-rules/signature-generation.html 在这里微信支付给出了明确的文档教我们如何构造请求签名
⚠️每行内容后需添加换行符‘\n‘ 完整代码：Controller.java文件 ...... @Autowired private WxPayConfig wxPayConfig; //存放微信基本配置数据 @GetMapping("/get_order_status") public Map get_authorization(@RequestParam String order_no) throws IOException, SignatureException, NoSuchAlgorithmException, InvalidKeyException { Map map = new HashMap(); String schema = "WECHATPAY2-SHA256-RSA2048 "; //注意这个，有一个空格 HttpUrl httpurl = HttpUrl.parse("https://api.mch.weixin.qq.com/v3/pay/transactions/out-trade-no/" + order_no + "?mchid=" + wxPayConfig.getMchId()); //构造参与签名的URL HttpGet httpGet = new HttpGet("https://api.mch.weixin.qq.com/v3/pay/transactions/out-trade-no/" + order_no + "?mchid=" + wxPayConfig.getMchId()); httpGet.setHeader("Authorization", schema + getToken("GET", httpurl, "")); //微信支付文档说明，GET请求时body为空 httpGet.setHeader("Accept", "application/json;charset=utf-8"); CloseableHttpClient httpClient = HttpClientBuilder.create().build(); CloseableHttpResponse response = httpClient.execute(httpGet); // 获取响应状态码 int statusCode = response.getStatusLine().getStatusCode(); // 获取响应内容 String responseBody = EntityUtils.toString(response.getEntity()); // 关闭响应对象 response.close(); map.put("code", statusCode); map.put("data", responseBody); return map; } String getToken(String method, HttpUrl url, String body) throws UnsupportedEncodingException, SignatureException, NoSuchAlgorithmException, InvalidKeyException { String nonceStr = WXPayUtil.generateNonceStr(); //WXPayUtil是微信支付自带的sdk long timestamp = System.currentTimeMillis() / 1000; //生成时间戳 String message = buildMessage(method, url, timestamp, nonceStr, body); String signature = sign(message.getBytes("utf-8")); return "mchid=\"" + wxPayConfig.getMchId() + "\"," + "nonce_str=\"" + nonceStr + "\"," + "timestamp=\"" + timestamp + "\"," + "serial_no=\"" + wxPayConfig.getMchSerialNo() + "\"," //mchserialNo是微信支付中申请的证书序列号 + "signature=\"" + signature + "\""; } String sign(byte[] message) throws InvalidKeyException, SignatureException, NoSuchAlgorithmException { Signature sign = Signature.getInstance("SHA256withRSA"); sign.initSign(wxPayConfig.getPrivateKey()); sign.update(message); return Base64.getEncoder().encodeToString(sign.sign()); } String buildMessage(String method, HttpUrl url, long timestamp, String nonceStr, String body) { String canonicalUrl = url.encodedPath(); if (url.encodedQuery() != null) { canonicalUrl += "?" + url.encodedQuery(); } return method + "\n" + canonicalUrl + "\n" + timestamp + "\n" + nonceStr + "\n" + body + "\n"; } ......使用apifox测试结果： |
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