基于Java的二手奢侈品在线交易平台设计与实现源码

package com.github.wxpay.sdk; import com.github.wxpay.sdk.WXPayConstants.SignType; import java.util.HashMap; import java.util.Map; public class WXPay { private WXPayConfig config; private SignType signType; private boolean autoReport; private boolean useSandbox; private String notifyUrl; private WXPayRequest wxPayRequest; public WXPay(final WXPayConfig config) throws Exception { this(config, null, true, false); } public WXPay(final WXPayConfig config, final boolean autoReport) throws Exception { this(config, null, autoReport, false); } public WXPay(final WXPayConfig config, final boolean autoReport, final boolean useSandbox) throws Exception{ this(config, null, autoReport, useSandbox); } public WXPay(final WXPayConfig config, final String notifyUrl) throws Exception { this(config, notifyUrl, true, false); } public WXPay(final WXPayConfig config, final String notifyUrl, final boolean autoReport) throws Exception { this(config, notifyUrl, autoReport, false); } public WXPay(final WXPayConfig config, final String notifyUrl, final boolean autoReport, final boolean useSandbox) throws Exception { this.config = config; this.notifyUrl = notifyUrl; this.autoReport = autoReport; this.useSandbox = useSandbox; if (useSandbox) { this.signType = SignType.MD5; // 沙箱环境 } else { this.signType = SignType.HMACSHA256; } this.wxPayRequest = new WXPayRequest(config); } private void checkWXPayConfig() throws Exception { if (this.config == null) { throw new Exception("config is null"); } if (this.config.getAppID() == null || this.config.getAppID().trim().length() == 0) { throw new Exception("appid in config is empty"); } if (this.config.getMchID() == null || this.config.getMchID().trim().length() == 0) { throw new Exception("appid in config is empty"); } if (this.config.getCertStream() == null) { throw new Exception("cert stream in config is empty"); } if (this.config.getWXPayDomain() == null){ throw new Exception("config.getWXPayDomain() is null"); } if (this.config.getHttpConnectTimeoutMs() < 10) { throw new Exception("http connect timeout is too small"); } if (this.config.getHttpReadTimeoutMs() < 10) { throw new Exception("http read timeout is too small"); } } /** * 向 Map 中添加 appid、mch_id、nonce_str、sign_type、sign <br> * 该函数适用于商户适用于统一下单等接口，不适用于红包、代金券接口 * * @param reqData * @return * @throws Exception */ public Map<String, String> fillRequestData(Map<String, String> reqData) throws Exception { reqData.put("appid", config.getAppID()); reqData.put("mch_id", config.getMchID()); reqData.put("nonce_str", WXPayUtil.generateNonceStr()); if (SignType.MD5.equals(this.signType)) { reqData.put("sign_type", WXPayConstants.MD5); } else if (SignType.HMACSHA256.equals(this.signType)) { reqData.put("sign_type", WXPayConstants.HMACSHA256); } reqData.put("sign", WXPayUtil.generateSignature(reqData, config.getKey(), this.signType)); return reqData; } /** * 判断xml数据的sign是否有效，必须包含sign字段，否则返回false。 * * @param reqData 向wxpay post的请求数据 * @return 签名是否有效 * @throws Exception */ public boolean isResponseSignatureValid(Map<String, String> reqData) throws Exception { // 返回数据的签名方式和请求中给定的签名方式是一致的 return WXPayUtil.isSignatureValid(reqData, this.config.getKey(), this.signType); } /** * 判断支付结果通知中的sign是否有效 * * @param reqData 向wxpay post的请求数据 * @return 签名是否有效 * @throws Exception */ public boolean isPayResultNotifySignatureValid(Map<String, String> reqData) throws Exception { String signTypeInData = reqData.get(WXPayConstants.FIELD_SIGN_TYPE); SignType signType; if (signTypeInData == null) { signType = SignType.MD5; } else { signTypeInData = signTypeInData.trim(); if (signTypeInData.length() == 0) { signType = SignType.MD5; } else if (WXPayConstants.MD5.equals(signTypeInData)) { signType = SignType.MD5; } else if (WXPayConstants.HMACSHA256.equals(signTypeInData)) { signType = SignType.HMACSHA256; } else { throw new Exception(String.format("Unsupported sign_type: %s", signTypeInData)); } } return WXPayUtil.isSignatureValid(reqData, this.config.getKey(), signType); } /** * 不需要证书的请求 * @param urlSuffix String * @param reqData 向wxpay post的请求数据 * @param connectTimeoutMs 超时时间，单位是毫秒 * @param readTimeoutMs 超时时间，单位是毫秒 * @return API返回数据 * @throws Exception */ public String requestWithoutCert(String urlSuffix, Map<String, String> reqData, int connectTimeoutMs, int readTimeoutMs) throws Exception { String msgUUID = reqData.get("nonce_str"); String reqBody = WXPayUtil.mapToXml(reqData); String resp = this.wxPayRequest.requestWithoutCert(urlSuffix, msgUUID, reqBody, connectTimeoutMs, readTimeoutMs, autoReport); return resp; } /** * 需要证书的请求 * @param urlSuffix String * @param reqData 向wxpay post的请求数据 Map * @param connectTimeoutMs 超时时间，单位是毫秒 * @param readTimeoutMs 超时时间，单位是毫秒 * @return API返回数据 * @throws Exception */ public String requestWithCert(String urlSuffix, Map<String, String> reqData, int connectTimeoutMs, int readTimeoutMs) throws Exception { String msgUUID= reqData.get("nonce_str"); String reqBody = WXPayUtil.mapToXml(reqData); String resp = this.wxPayRequest.requestWithCert(urlSuffix, msgUUID, reqBody, connectTimeoutMs, readTimeoutMs, this.autoReport); return resp; } /** * 处理 HTTPS API返回数据，转换成Map对象。return_code为SUCCESS时，验证签名。 * @param xmlStr API返回的XML格式数据 * @return Map类型数据 * @throws Exception */ public Map<String, String> processResponseXml(String xmlStr) throws Exception { String RETURN_CODE = "return_code"; String return_code; Map<String, String> respData = WXPayUtil.xmlToMap(xmlStr); if (respData.containsKey(RETURN_CODE)) { return_code = respData.get(RETURN_CODE); } else { throw new Exception(String.format("No `return_code` in XML: %s", xmlStr)); } if (return_code.equals(WXPayConstants.FAIL)) { return respData; } else if (return_code.equals(WXPayConstants.SUCCESS)) { if (this.isResponseSignatureValid(respData)) { return respData; } else { throw new Exception(String.format("Invalid sign value in XML: %s", xmlStr)); } } else { throw new Exception(String.format("return_code value %s is invalid in XML: %s", return_code, xmlStr)); } } /** * 作用：提交刷卡支付<br> * 场景：刷卡支付 * @param reqData 向wxpay post的请求数据 * @