feat: 商家转账升级功能SDK

service/README.md

@@ -31,3 +31,4 @@
 | billdownload | 账单下载 |✔️|✔️|
 | ecommercesubsidy | 电商收付通补差 | |✔️|
 | ecommercerefund  | 电商收付通退款 | |✔️|
+| mchtransfer | 商家转账升级功能 |✔️||

service/src/example/java/com/wechat/pay/java/service/mchtransfer/MchTransferServiceExample.java

@@ -0,0 +1,94 @@
+package com.wechat.pay.java.service.mchtransfer;
+
+import com.wechat.pay.java.core.Config;
+import com.wechat.pay.java.core.RSAAutoCertificateConfig;
+import com.wechat.pay.java.service.mchtransfer.model.*;
+
+/** MchTransferService使用示例 */
+public class MchTransferServiceExample {
+
+  /** 商户号 */
+  public static String merchantId = "190000****";
+
+  /** 商户API私钥路径 */
+  public static String privateKeyPath = "/Users/yourname/your/path/apiclient_key.pem";
+
+  /** 商户证书序列号 */
+  public static String merchantSerialNumber = "5157F09EFDC096DE15EBE81A47057A72********";
+
+  /** 商户APIV3密钥 */
+  public static String apiV3Key = "...";
+
+  public static MchTransferService service;
+
+  public static void main(String[] args) {
+    // 初始化商户配置
+    Config config =
+        new RSAAutoCertificateConfig.Builder()
+            .merchantId(merchantId)
+            // 使用 com.wechat.pay.java.core.util
+            // 中的函数从本地文件中加载商户私钥，商户私钥会用来生成请求的签名
+            .privateKeyFromPath(privateKeyPath)
+            .merchantSerialNumber(merchantSerialNumber)
+            .apiV3Key(apiV3Key)
+            .build();
+
+    // 初始化服务
+    service = new MchTransferService.Builder().config(config).build();
+    // ... 调用接口
+  }
+
+  /** 微信单号查询转账单 */
+  public static TransferBillEntity getTransferBillByNo() {
+    GetTransferBillByNoRequest request = new GetTransferBillByNoRequest();
+    return service.getTransferBillByNo(request);
+  }
+
+  /** 商户单号查询转账单 */
+  public static TransferBillEntity getTransferBillByOutNo() {
+    GetTransferBillByOutNoRequest request = new GetTransferBillByOutNoRequest();
+    return service.getTransferBillByOutNo(request);
+  }
+
+  /** 发起商家转账 */
+  public static InitiateMchTransferResponse initiateMchTransfer() {
+    InitiateMchTransferRequest request = new InitiateMchTransferRequest();
+    return service.initiateMchTransfer(request);
+  }
+
+  /** 撤销商家转账 */
+  public static CancelMchTransferResponse cancelMchTransfer() {
+    CancelMchTransferRequest request = new CancelMchTransferRequest();
+    return service.cancelMchTransfer(request);
+  }
+
+  /** 微信单号申请电子回单 */
+  public static AcceptElecsignResponse acceptElecsignByNo() {
+    AcceptElecsignByNoRequest request = new AcceptElecsignByNoRequest();
+    return service.acceptElecsignByNo(request);
+  }
+
+  /** 微信单号查询电子回单 */
+  public static ElecsignEntity queryElecsignByNo() {
+    QueryElecsignByNoRequest request = new QueryElecsignByNoRequest();
+    return service.queryElecsignByNo(request);
+  }
+
+  /** 商户单号申请电子回单 */
+  public static AcceptElecsignResponse acceptElecsignByOutNo() {
+    AcceptElecsignByOutNoRequest request = new AcceptElecsignByOutNoRequest();
+    return service.acceptElecsignByOutNo(request);
+  }
+
+  /** 商户单号查询电子回单 */
+  public static ElecsignEntity queryElecsignByOutNo() {
+    QueryElecsignByOutNoRequest request = new QueryElecsignByOutNoRequest();
+    return service.queryElecsignByOutNo(request);
+  }
+
+  /** 下载电子回单 */
+  public static DigestElecsignEntity downloadElecsign() {
+    ElecsignEntity entity = queryElecsignByNo();
+    return service.downloadElecsign(entity);
+  }
+}