wechatpay-java SDK, 中 包含了商户进件相关，图片上传，意愿确认，平台处置 相关的接口服务吗？
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默认集成的接口都在这里了，如果 SDK 未支持你需要的接口，你可以使用 OkHttpClientAdapter 的实现类发送 HTTP 请求，它会自动生成签名和验证签名。https://github.com/wechatpay-apiv3/wechatpay-java/blob/main/service/README.md