Apple 购买：使用 Rest 模板验证收据

问题描述

我必须实现一个 API，该 API 旨在使用 Rest 模板通过 Apple 服务器验证收据。但是，我总是从 https://sandbox.itunes.apple.com/verifyReceipt

收到状态代码 21002

 public void verifyReceipt(Purchase purchase) {

    String uri = "https://sandBox.itunes.apple.com/verifyReceipt";
    String receipt = new String(Base64.getEncoder().encode(purchase.getReceipt().getBytes()));

    Map<String,String> params = new HashMap<>();
    params.put("receipt-data",receipt);
    params.put("password","secret");

    Gson gson = new Gson();
    String json = gson.toJson(params);
    RestTemplate restTemplate = new RestTemplate();
    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_JSON);
    httpentity<String> request = new httpentity<>(json,headers);
    ResponseEntity<String> response = restTemplate.exchange(uri,HttpMethod.POST,request,String.class);
....

}

Apple 文档： https://developer.apple.com/documentation/appstorereceipts/verifyreceipt

有什么想法吗？

解决方法

什么是 Purchase 类？客户端（iOS App）发送到我们服务器端的收据数据应该已经是base64编码了。