2024-05-17 16:39:51 +08:00
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## 如何接入境外支付 API？
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微信支付境外支付 API 的接入点、接口模型公共参数等配置项与基础 API 完全不同，需要使用独立的扩展客户端。
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```csharp
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using SKIT.FlurlHttpClient.Wechat.TenpayV3.ExtendedSDK.Global;
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using SKIT.FlurlHttpClient.Wechat.TenpayV3.Settings;
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var manager = new InMemoryCertificateManager();
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var options = new WechatTenpayGlobalClientOptions()
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{
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MerchantId = "微信商户号",
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MerchantV3Secret = "微信商户 v3 API 密钥",
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MerchantCertificateSerialNumber = "微信商户证书序列号",
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MerchantCertificatePrivateKey = System.IO.File.ReadAllText("/微信商户证书私钥文件路径/apiclient_key.pem"),
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PlatformCertificateManager = manager
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};
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var client = WechatTenpayGlobalClientBuilder.Create(options).Build();
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```
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该扩展客户端在用法上基础客户端完全相同，只需引入相应的命名空间即可。
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2025-06-07 22:47:25 +08:00
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---
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### 切换接入点
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默认情况下，微信支付境外支付 API 客户端的接入点为 `https://apihk.mch.weixin.qq.com/v3/global`。
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如果你要切换为 `https://api.mch.weixin.qq.com/hk/v3` 或其他入口点，可以在构造客户端时指定：
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```csharp
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var options = new WechatTenpayGlobalClientOptions()
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{
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// 其他配置项略
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Endpoint = "https://api.mch.weixin.qq.com/hk/v3" // 注意结尾不要带 "/"
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};
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var client = WechatTenpayGlobalClientBuilder.Create(options).Build();
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```
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