From 2ab4caf5e162820b00f71074be0c13a056be5145 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 5 Dec 2025 08:20:07 +0000
Subject: [PATCH] =?UTF-8?q?=E5=9C=A8JsapiResult=E4=B8=AD=E6=B7=BB=E5=8A=A0?=
=?UTF-8?q?prepayId=E5=AD=97=E6=AE=B5=E5=B9=B6=E6=8F=90=E4=BE=9B=E9=9D=99?=
=?UTF-8?q?=E6=80=81=E5=B7=A5=E5=8E=82=E6=96=B9=E6=B3=95=E5=AE=9E=E7=8E=B0?=
=?UTF-8?q?=E8=A7=A3=E8=80=A6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Co-authored-by: binarywang <1343140+binarywang@users.noreply.github.com>
---
.../result/WxPayUnifiedOrderV3Result.java | 89 +++++++++++++++++++
1 file changed, 89 insertions(+)
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayUnifiedOrderV3Result.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayUnifiedOrderV3Result.java
index 309fb8e75..dc929a2cd 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayUnifiedOrderV3Result.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/result/WxPayUnifiedOrderV3Result.java
@@ -81,6 +81,19 @@ public class WxPayUnifiedOrderV3Result implements Serializable {
private String packageValue;
private String signType;
private String paySign;
+ /**
+ *
+ * 字段名：预支付交易会话标识
+ * 变量名：prepay_id
+ * 是否必填：否（用户可选存储）
+ * 类型：string[1,64]
+ * 描述：
+ * 预支付交易会话标识。用于后续接口调用中使用，该值有效期为2小时
+ * 此字段用于支持用户存储prepay_id，以便复用和重新生成支付签名
+ * 示例值：wx201410272009395522657a690389285100
+ *
+ */
+ private String prepayId;
private String getSignStr() {
return String.format("%s\n%s\n%s\n%s\n", appId, timeStamp, nonceStr, packageValue);
@@ -113,6 +126,7 @@ public class WxPayUnifiedOrderV3Result implements Serializable {
JsapiResult jsapiResult = new JsapiResult();
jsapiResult.setAppId(appId).setTimeStamp(timestamp)
.setPackageValue("prepay_id=" + this.prepayId).setNonceStr(nonceStr)
+ .setPrepayId(this.prepayId)
//签名类型，默认为RSA，仅支持RSA。
.setSignType("RSA").setPaySign(SignUtils.sign(jsapiResult.getSignStr(), privateKey));
return (T) jsapiResult;
@@ -132,4 +146,79 @@ public class WxPayUnifiedOrderV3Result implements Serializable {
throw new WxRuntimeException("不支持的支付类型");
}
}
+
+ /**
+ *
+ * 根据已有的prepay_id生成JSAPI支付所需的参数对象（解耦版本）
+ * 应用场景：
+ * 1. 用户已经通过createPartnerOrderV3或unifiedPartnerOrderV3获取了prepay_id
+ * 2. 用户希望存储prepay_id用于后续复用
+ * 3. 支付失败后，使用存储的prepay_id重新生成支付签名信息
+ *
+ * 使用示例：
+ * // 步骤1：创建订单并获取prepay_id
+ * WxPayUnifiedOrderV3Result result = wxPayService.unifiedPartnerOrderV3(TradeTypeEnum.JSAPI, request);
+ * String prepayId = result.getPrepayId();
+ * // 存储prepayId到数据库...
+ *
+ * // 步骤2：需要支付时，使用存储的prepay_id生成支付信息
+ * WxPayUnifiedOrderV3Result.JsapiResult payInfo = WxPayUnifiedOrderV3Result.getJsapiPayInfo(
+ * prepayId, appId, wxPayService.getConfig().getPrivateKey()
+ * );
+ *
+ *
+ * @param prepayId 预支付交易会话标识
+ * @param appId 应用ID
+ * @param privateKey 商户私钥，用于签名
+ * @return JSAPI支付所需的参数对象
+ */
+ public static JsapiResult getJsapiPayInfo(String prepayId, String appId, PrivateKey privateKey) {
+ String timestamp = String.valueOf(System.currentTimeMillis() / 1000);
+ String nonceStr = SignUtils.genRandomStr();
+ JsapiResult jsapiResult = new JsapiResult();
+ jsapiResult.setAppId(appId).setTimeStamp(timestamp)
+ .setPackageValue("prepay_id=" + prepayId).setNonceStr(nonceStr)
+ .setPrepayId(prepayId)
+ //签名类型，默认为RSA，仅支持RSA。
+ .setSignType("RSA").setPaySign(SignUtils.sign(jsapiResult.getSignStr(), privateKey));
+ return jsapiResult;
+ }
+
+ /**
+ *
+ * 根据已有的prepay_id生成APP支付所需的参数对象（解耦版本）
+ * 应用场景：
+ * 1. 用户已经通过createPartnerOrderV3或unifiedPartnerOrderV3获取了prepay_id
+ * 2. 用户希望存储prepay_id用于后续复用
+ * 3. 支付失败后，使用存储的prepay_id重新生成支付签名信息
+ *
+ * 使用示例：
+ * // 步骤1：创建订单并获取prepay_id
+ * WxPayUnifiedOrderV3Result result = wxPayService.unifiedPartnerOrderV3(TradeTypeEnum.APP, request);
+ * String prepayId = result.getPrepayId();
+ * // 存储prepayId到数据库...
+ *
+ * // 步骤2：需要支付时，使用存储的prepay_id生成支付信息
+ * WxPayUnifiedOrderV3Result.AppResult payInfo = WxPayUnifiedOrderV3Result.getAppPayInfo(
+ * prepayId, appId, mchId, wxPayService.getConfig().getPrivateKey()
+ * );
+ *
+ *
+ * @param prepayId 预支付交易会话标识
+ * @param appId 应用ID
+ * @param mchId 商户号
+ * @param privateKey 商户私钥，用于签名
+ * @return APP支付所需的参数对象
+ */
+ public static AppResult getAppPayInfo(String prepayId, String appId, String mchId, PrivateKey privateKey) {
+ String timestamp = String.valueOf(System.currentTimeMillis() / 1000);
+ String nonceStr = SignUtils.genRandomStr();
+ AppResult appResult = new AppResult();
+ appResult.setAppid(appId).setPrepayId(prepayId).setPartnerId(mchId)
+ .setNoncestr(nonceStr).setTimestamp(timestamp)
+ //暂填写固定值Sign=WXPay
+ .setPackageValue("Sign=WXPay")
+ .setSign(SignUtils.sign(appResult.getSignStr(), privateKey));
+ return appResult;
+ }
}