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120 lines
3.8 KiB
Markdown
120 lines
3.8 KiB
Markdown
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# 境外微信支付(Overseas WeChat Pay)支持
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本次更新添加了境外微信支付的支持，解决了 [Issue #3618](https://github.com/binarywang/WxJava/issues/3618) 中提到的问题。
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## 问题背景
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境外微信支付需要使用新的API接口地址和额外的参数：
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- 使用不同的基础URL: `https://apihk.mch.weixin.qq.com`
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- 需要额外的参数: `trade_type` 和 `merchant_category_code`
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- 使用不同的API端点: `/global/v3/transactions/*`
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## 新增功能
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### 1. GlobalTradeTypeEnum
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新的枚举类，定义了境外支付的交易类型和对应的API端点：
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- `APP`: `/global/v3/transactions/app`
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- `JSAPI`: `/global/v3/transactions/jsapi`
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- `NATIVE`: `/global/v3/transactions/native`
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- `H5`: `/global/v3/transactions/h5`
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### 2. WxPayUnifiedOrderV3GlobalRequest
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扩展的请求类，包含境外支付必需的额外字段：
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- `trade_type`: 交易类型 (JSAPI, APP, NATIVE, H5)
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- `merchant_category_code`: 商户类目代码（境外商户必填）
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### 3. 新的服务方法
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- `createOrderV3Global()`: 创建境外支付订单
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- `unifiedOrderV3Global()`: 境外统一下单接口
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## 使用示例
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### JSAPI支付示例
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```java
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// 创建境外支付请求
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WxPayUnifiedOrderV3GlobalRequest request = new WxPayUnifiedOrderV3GlobalRequest();
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request.setOutTradeNo(RandomUtils.getRandomStr());
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request.setDescription("境外商品购买");
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request.setNotifyUrl("https://your-domain.com/notify");
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// 设置金额
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WxPayUnifiedOrderV3GlobalRequest.Amount amount = new WxPayUnifiedOrderV3GlobalRequest.Amount();
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amount.setCurrency(WxPayConstants.CurrencyType.CNY);
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amount.setTotal(100); // 1元，单位为分
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request.setAmount(amount);
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// 设置支付者
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WxPayUnifiedOrderV3GlobalRequest.Payer payer = new WxPayUnifiedOrderV3GlobalRequest.Payer();
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payer.setOpenid("用户的openid");
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request.setPayer(payer);
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// 设置境外支付必需的参数
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request.setTradeType("JSAPI");
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request.setMerchantCategoryCode("5812"); // 商户类目代码
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// 调用境外支付接口
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WxPayUnifiedOrderV3Result.JsapiResult result = payService.createOrderV3Global(
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GlobalTradeTypeEnum.JSAPI,
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request
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);
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```
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### APP支付示例
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```java
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WxPayUnifiedOrderV3GlobalRequest request = new WxPayUnifiedOrderV3GlobalRequest();
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// ... 设置基础信息 ...
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request.setTradeType("APP");
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request.setMerchantCategoryCode("5812");
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request.setPayer(new WxPayUnifiedOrderV3GlobalRequest.Payer()); // APP支付不需要openid
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WxPayUnifiedOrderV3Result.AppResult result = payService.createOrderV3Global(
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GlobalTradeTypeEnum.APP,
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request
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);
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```
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### NATIVE支付示例
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```java
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WxPayUnifiedOrderV3GlobalRequest request = new WxPayUnifiedOrderV3GlobalRequest();
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// ... 设置基础信息 ...
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request.setTradeType("NATIVE");
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request.setMerchantCategoryCode("5812");
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request.setPayer(new WxPayUnifiedOrderV3GlobalRequest.Payer());
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String codeUrl = payService.createOrderV3Global(
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GlobalTradeTypeEnum.NATIVE,
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request
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);
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```
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## 配置说明
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境外支付使用相同的 `WxPayConfig` 配置，无需特殊设置：
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```java
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WxPayConfig config = new WxPayConfig();
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config.setAppId("你的AppId");
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config.setMchId("你的境外商户号");
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config.setMchKey("你的商户密钥");
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config.setNotifyUrl("https://your-domain.com/notify");
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// V3相关配置
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config.setPrivateKeyPath("你的私钥文件路径");
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config.setCertSerialNo("你的商户证书序列号");
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config.setApiV3Key("你的APIv3密钥");
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```
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**注意**: 境外支付会自动使用 `https://apihk.mch.weixin.qq.com` 作为基础URL，无需手动设置。
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## 兼容性
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- 完全向后兼容，不影响现有的国内支付功能
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- 使用相同的配置类和结果类
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- 遵循现有的代码风格和架构模式
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## 参考文档
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- [境外微信支付文档](https://pay.weixin.qq.com/doc/global/v3/zh/4013014223)
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- [原始Issue #3618](https://github.com/binarywang/WxJava/issues/3618)
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