微信支付API v3 Native支付

废话不多说直接上代码不熟悉的直接私信我

依赖

<dependency><groupId>com.github.wechatpay-apiv3</groupId><artifactId>wechatpay-apache-httpclient</artifactId><version>0.4.2</version>
</dependency>

配置类(填写自己的配置)

/*** 微信支付配置信息*/
@PropertySource(value = {"classpath:wxpayConfig.properties"})
@Component
public class WxPayConfigure {private static final Logger log = LoggerFactory.getLogger(WxPayConfigure.class);@Value("${NOTIFY_URL}")private String NOTIFY_URL;@Value("${MCH_ID}")private String MCH_ID; // 商户号@Value("${MCH_SERIAL_NO}")private String MCH_SERIAL_NO; // 商户证书序列号// 你的商户私钥@Value("${API_V3_KEY}")private String API_V3_KEY;@Value("${APP_ID}")private String APP_ID;@Value("${PACKAGE}")private String PACKAGE; //签名固定字符串(必须)// 商户私钥@Value("${PRIVATE_KEY}")private String PRIVATE_KEY;//你的微信支付平台证书@Value("${CERTIFICATE}")private String certificate;@Value("${wxDomainUrl}")private String wxDomainUrl;public String getWxDomainUrl() {return wxDomainUrl;}public void setWxDomainUrl(String wxDomainUrl) {this.wxDomainUrl = wxDomainUrl;}public String getNOTIFY_URL() {return NOTIFY_URL;}public void setNOTIFY_URL(String NOTIFY_URL) {this.NOTIFY_URL = NOTIFY_URL;}public String getMCH_ID() {return MCH_ID;}public void setMCH_ID(String MCH_ID) {this.MCH_ID = MCH_ID;}public String getMCH_SERIAL_NO() {return MCH_SERIAL_NO;}public void setMCH_SERIAL_NO(String MCH_SERIAL_NO) {this.MCH_SERIAL_NO = MCH_SERIAL_NO;}public String getAPI_V3_KEY() {return API_V3_KEY;}public void setAPI_V3_KEY(String API_V3_KEY) {this.API_V3_KEY = API_V3_KEY;}public String getAPP_ID() {return APP_ID;}public void setAPP_ID(String APP_ID) {this.APP_ID = APP_ID;}public String getPACKAGE() {return PACKAGE;}public void setPACKAGE(String PACKAGE) {this.PACKAGE = PACKAGE;}public String getPRIVATE_KEY() {return PRIVATE_KEY;}public void setPRIVATE_KEY(String PRIVATE_KEY) {this.PRIVATE_KEY = PRIVATE_KEY;}public String getCertificate() {return certificate;}public void setCertificate(String certificate) {this.certificate = certificate;}public WxPayConfigure() {}/*** 获取商户秘钥* @return*/private PrivateKey getPrivateKey(){PrivateKey privateKey = PemUtil.loadPrivateKey(PRIVATE_KEY);return privateKey;}/*** 获取签名验证器 启动加载一次* @return* @throws NotFoundException*/@Beanpublic Verifier getVerifier() throws NotFoundException {//获取私钥PrivateKey privateKey = getPrivateKey();// 获取证书管理器实例CertificatesManager certificatesManager = CertificatesManager.getInstance();// 向证书管理器增加需要自动更新平台证书的商户信息try {certificatesManager.putMerchant(MCH_ID, new WechatPay2Credentials(MCH_ID,new PrivateKeySigner(MCH_SERIAL_NO, privateKey)), API_V3_KEY.getBytes(StandardCharsets.UTF_8));//... 若有多个商户号，可继续调用putMerchant添加商户信息} catch (IOException | HttpCodeException | GeneralSecurityException e) {log.error("微信商户私钥加载失败={}",e.getMessage());}// 从证书管理器中获取verifierreturn certificatesManager.getVerifier(MCH_ID);}/*** 获取微信支付http请求对象并且只加载一次* @param verifier* @return*/@Beanpublic  CloseableHttpClient getWxPayClient(Verifier verifier){//获取商户私钥PrivateKey privateKey = getPrivateKey();// 通过WechatPayHttpClientBuilder构造的HttpClient，会自动的处理签名和验签，并进行证书自动更新WechatPayHttpClientBuilder builder = WechatPayHttpClientBuilder.create().withMerchant(MCH_ID, MCH_SERIAL_NO, privateKey).withValidator(new WechatPay2Validator(verifier));CloseableHttpClient httpClient = builder.build();/*** 使用WechatPayHttpClientBuilder需要调用withWechatPay设置微信支付平台证书，* 而平台证书又只能通过调用获取平台证书接口下载。为了解开"死循环"，* 你可以在第一次下载平台证书时，按照下述方法临时"跳过”应答签名的验证。*/
//        CloseableHttpClient httpClient = WechatPayHttpClientBuilder.create()
//                .withMerchant(MCH_ID, MCH_SERIAL_NO, privateKey)
//                .withValidator(response -> true) // NOTE: 设置一个空的应答签名验证器，**不要**用在业务请求
//                .build();return httpClient;}}

二维码工具类:

public class QrUtil {public static String qrBase64Str(String url) throws Exception{String base64Str = null;ByteArrayOutputStream out = null;try {out = QRCode.from(url).to(ImageType.JPG).withSize(250, 250).stream();BASE64Encoder encoder = new BASE64Encoder();// 返回Base64编码过的字节数组字符串base64Str = encoder.encode(out.toByteArray());} finally {if (null != out) {out.close();}}return base64Str;}

@Service
public class WxPayUtil {private static Log log = LogFactory.getLog(WxPayUtil.class);@Autowiredprivate WxPayConfigure wxPayConfigure;@Autowiredprivate MyConfiguration myConfiguration;/*** 商户Native支付下单接口，微信后台系统返回链接参数code_url，商户后台系统将code_url值生成二维码图片，用户使用微信客户端扫码后发起支付。*/public String createOrder(PayParams payParams, HttpServletResponse response){
//        HttpPost httpPost = new HttpPost("https://api.mch.weixin.qq.com/v3/pay/transactions/native");HttpPost httpPost = new HttpPost(WxApiType.NATIVE_PAY.getValue());httpPost.addHeader("Accept", "application/json");httpPost.addHeader("Content-type","application/json; charset=utf-8");ByteArrayOutputStream bos = new ByteArrayOutputStream();ObjectMapper objectMapper = new ObjectMapper();ObjectNode rootNode = objectMapper.createObjectNode();//元化为分BigDecimal bigDecimal = new BigDecimal(payParams.getTotalAmount());BigDecimal str = new BigDecimal("100");BigDecimal moneyResult = bigDecimal.multiply(str);//appid  微信生成的应用ID，全局唯一。 必填//mchid  直连商户号    必填//description  商品描述        必填//out_trade_no  商户订单号 商户系统内部订单号  必填//  time_expire  交易结束时间   非必填 订单失效时间//attach   附加数据//notify_url 必填   回调url   必填//amount  + 订单金额    total int类型(微信要求的)     必填   currency  货币类型  CNY(人民币)  非必填rootNode.put("mchid", wxPayConfigure.getMCH_ID()).put("appid",wxPayConfigure.getAPP_ID() ).put("description", "日照市中心医院自助缴费").put("notify_url", wxPayConfigure.getNOTIFY_URL())//商户订单号  商户系统内部订单号，只能是数字、大小写字母_-*且在同一个商户号下唯一
//                .put("out_trade_no", payParams.getOutTradeNo());.put("out_trade_no", payParams.getOutTradeNo());rootNode.putObject("amount").put("total", moneyResult.intValue());
//                .put("total", 1);
//        rootNode.putObject("payer")
//                .put("openid", "oUpF8uMuAJO_M2pxb1Q9zNjWeS6o");String codeUrl="";try {objectMapper.writeValue(bos, rootNode);httpPost.setEntity(new StringEntity(bos.toString("UTF-8"), "UTF-8"));CloseableHttpResponse closeableHttpResponse = null;CloseableHttpClient wxPayClient = wxPayConfigure.getWxPayClient(wxPayConfigure.getVerifier());closeableHttpResponse = wxPayClient.execute(httpPost);String bodyAsString = EntityUtils.toString(closeableHttpResponse.getEntity());ObjectMapper mapper = new ObjectMapper();JsonNode jsonNode = mapper.readTree(bodyAsString);//二维码urlcodeUrl = jsonNode.get("code_url").asText();} catch (IOException | NotFoundException e) {e.printStackTrace();}String qrCodePath = myConfiguration.getQrCode();String  filePath = String.format(qrCodePath+"/qr-%s.jpg",payParams.getOutTradeNo());
//                log.info("filePath:" + filePath);ZxingUtils.getQRCodeImge(codeUrl, 256, filePath);//用流读取显示二维码File file = new File(filePath);ServletOutputStream outputStream = null;try {outputStream = response.getOutputStream();ImageIO.write(ImageIO.read(file),"jpg",outputStream);outputStream.flush();} catch (IOException e) {e.printStackTrace();}//最后删除生成的图片FileUtil.deleteFile(filePath);return null;}/*** 微信查询订单   查询订单可通过微信支付订单号和商户订单号两种方式查询，两种查询方式返回结果相同*///  微信支付订单号查询   1217752501201407033233368018 微信支付订单号   1230000109 商户号//  get  请求URL： https://api.mch.weixin.qq.com/v3/pay/transactions/id/{transaction_id}// https://api.mch.weixin.qq.com/v3/pay/transactions/id/1217752501201407033233368018?mchid=1230000109//商户订单号查询    1217752501201407033233368018 商户订单号    1230000109商户号//  商户订单号查询  get  请求URL： https://api.mch.weixin.qq.com/v3/pay/transactions/out-trade-no/{out_trade_no}// https://api.mch.weixin.qq.com/v3/pay/transactions/out-trade-no/1217752501201407033233368018?mchid=1230000109public String queryWxOrder( PayParams payParams){URIBuilder uriBuilder = null;try {
//            uriBuilder = new URIBuilder("https://api.mch.weixin.qq.com/v3/pay/transactions/out-trade-no/"+payParams.getOutTradeNo()+"?mchid="+wxPayConfigure.getMCH_ID());uriBuilder = new URIBuilder(WxApiType.ORDER_QUERY_BY_NO.getValue()+payParams.getOutTradeNo()+"?mchid="+wxPayConfigure.getMCH_ID());} catch (URISyntaxException e) {e.printStackTrace();}HttpGet httpGet = null;try {assert uriBuilder != null;httpGet = new HttpGet(uriBuilder.build());} catch (URISyntaxException e) {e.printStackTrace();}assert httpGet != null;httpGet.addHeader("Accept", "application/json");CloseableHttpResponse response = null;CloseableHttpClient wxPayClient = null;try {wxPayClient = wxPayConfigure.getWxPayClient(wxPayConfigure.getVerifier());} catch (NotFoundException e) {e.printStackTrace();}try {assert wxPayClient != null;response = wxPayClient.execute(httpGet);} catch (IOException e) {e.printStackTrace();}String bodyAsString = null;try {assert response != null;bodyAsString = EntityUtils.toString(response.getEntity());} catch (IOException e) {e.printStackTrace();}
//        System.out.println(bodyAsString);ObjectMapper mapper = new ObjectMapper();String tradeStateDesc ="";try {JsonNode jsonNode = mapper.readTree(bodyAsString);
//            Map<String,String> map = mapper.convertValue(bodyAsString, Map.class);tradeStateDesc = jsonNode.get("trade_state_desc").asText();} catch (IOException e) {e.printStackTrace();}return tradeStateDesc;}/*** 关闭订单  待测试* @param payParams*/public void closeWxOrder(PayParams payParams){HttpPost httpPost = new HttpPost("https://api.mch.weixin.qq.com/v3/pay/transactions/"+payParams.getOutTradeNo()+"/close");httpPost.addHeader("Accept", "application/json");httpPost.addHeader("Content-type","application/json; charset=utf-8");ByteArrayOutputStream bos = new ByteArrayOutputStream();ObjectMapper objectMapper = new ObjectMapper();ObjectNode rootNode = objectMapper.createObjectNode();rootNode.put("mchid",wxPayConfigure.getMCH_ID());CloseableHttpResponse response = null;String bodyAsString = null;try {objectMapper.writeValue(bos, rootNode);httpPost.setEntity(new StringEntity(bos.toString("UTF-8"), "UTF-8"));CloseableHttpClient wxPayClient = wxPayConfigure.getWxPayClient(wxPayConfigure.getVerifier());response = wxPayClient.execute(httpPost);bodyAsString = EntityUtils.toString(response.getEntity());} catch (IOException | NotFoundException e) {e.printStackTrace();}int statusCode = response.getStatusLine().getStatusCode();//204 正常System.out.println(bodyAsString);}/*** 申请退款* @param payParams* @return*/public String refundOrder(PayParams payParams){HttpPost httpPost = new HttpPost(WxApiType.REFUND_ORDER_BY_NO.getValue());httpPost.addHeader("Accept", "application/json");httpPost.addHeader("Content-type","application/json; charset=utf-8");ByteArrayOutputStream bos = new ByteArrayOutputStream();ObjectMapper objectMapper = new ObjectMapper();ObjectNode rootNode = objectMapper.createObjectNode();//元化为分BigDecimal str = new BigDecimal("100");BigDecimal totalBigDecimal = new BigDecimal(payParams.getTotalAmount());BigDecimal totalMoneyResult = totalBigDecimal.multiply(str);BigDecimal refundBigDecimal = new BigDecimal(payParams.getRefundAmount());BigDecimal refundMoneyResult = refundBigDecimal.multiply(str);//appid  微信生成的应用ID，全局唯一。 必填//mchid  直连商户号    必填//description  商品描述        必填//out_trade_no  商户订单号 商户系统内部订单号  必填//  time_expire  交易结束时间   非必填 订单失效时间//attach   附加数据//notify_url 必填   回调url   必填//amount  + 订单金额    total int类型(微信要求的)     必填   currency  货币类型  CNY(人民币)  非必填//商户订单号  商户系统内部订单号，只能是数字、大小写字母_-*且在同一个商户号下唯一rootNode.put("out_trade_no", payParams.getOutTradeNo()).put("out_refund_no",payParams.getRefundTradeNo()).put("reason", "正常退款");rootNode.putObject("amount").put("total", totalMoneyResult.intValue()).put("refund", refundMoneyResult.intValue()).put("currency","CNY");String status="";
//        String reason="";try {objectMapper.writeValue(bos, rootNode);httpPost.setEntity(new StringEntity(bos.toString("UTF-8"), "UTF-8"));CloseableHttpResponse response = null;CloseableHttpClient wxPayClient = wxPayConfigure.getWxPayClient(wxPayConfigure.getVerifier());response = wxPayClient.execute(httpPost);String bodyAsString = EntityUtils.toString(response.getEntity());ObjectMapper mapper = new ObjectMapper();JsonNode jsonNode = mapper.readTree(bodyAsString);//SUCCESS：退款成功//CLOSED：退款关闭//PROCESSING：退款处理中//ABNORMAL：退款异常status = jsonNode.get("status").asText();
//            reason = jsonNode.get("reason").asText();} catch (IOException | NotFoundException e) {e.printStackTrace();}//return status;}
}

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