amazon-web-services - 如何从 Cognito 获取编程错误代码？

Question

我正在使用 Cognito Javscript SDK，并且我创建了一个表单，用户可以在其中注册帐户。如果出于某种原因服务器端验证失败，则响应如下所示:

{
  "__type":"InvalidParameterException",
  "message":"4 validation errors detected: Value at 'password' failed to satisfy constraint: Member must have length greater than or equal to 6; Value at 'password' failed to satisfy constraint: Member must satisfy regular expression pattern: [\\S]+; Value at 'username' failed to satisfy constraint: Member must have length greater than or equal to 1; Value at 'username' failed to satisfy constraint: Member must satisfy regular expression pattern: [\\p{L}\\p{M}\\p{S}\\p{N}\\p{P}]+"
}

此响应的问题是我无法提供良好的用户反馈，因为我必须解析响应以确定需要修复哪些字段。有没有办法以更适合以编程方式处理的格式恢复错误？

Answer 1

目前执行此操作的最佳方法是通过删除“value at”之后的子字符串以编程方式获取值。

我还没有任何图书馆的例子可以帮助做到这一点，但这是很好的反馈。