---
title: "二维码生成和识别：错误码与失败排查（ret_code 判据与 flag 拼写陷阱）|万维易源ShowAPI"
canonical_url: "https://www.showapi.com/guides/qrcode-error-handling-887"
last_updated: "2026-08-31T13:39:08+08:00"
meta:
  description: "以 ret_code 判成功，规避 flag 拼写不一致与 887-4 无 flag/msg 的坑。"
  keywords: "二维码生成和识别：错误码与失败排查（ret_code 判据与 flag 拼写陷阱）"
  "og:description": "以 ret_code 判成功，规避 flag 拼写不一致与 887-4 无 flag/msg 的坑。"
  "og:title": "二维码生成和识别：错误码与失败排查（ret_code 判据与 flag 拼写陷阱）"
---

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