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shaguabijia-app-server/docs/api/wallet/wallet-exchange.md
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docs/api目录文档分类和补全

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Co-authored-by: guke <guke@autohome.com.cn>
Reviewed-on: #111
2026-07-03 15:00:37 +08:00

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# POST /api/v1/wallet/exchange — 金币兑现金
> 所属:Wallet 组(前缀 `/api/v1/wallet` | 鉴权:Bearer | [← 返回 API 索引](../README.md)
## 入参
| 字段 | 类型 | 必填 | 说明 |
|---|---|---|---|
| `coin_amount` | int | ✅(>0) | 要兑换的金币数,须 ≥ `min_coin` 且为 `step_coin` 整数倍 |
## 出参
响应 `200`:`ExchangeResultOut`
| 字段 | 类型 | 说明 |
|---|---|---|
| `coin_amount` | int | 本次扣除的金币 |
| `cash_added_cents` | int | 本次兑入的现金(分) |
| `coin_balance` | int | 兑换后金币余额 |
| `cash_balance_cents` | int | 兑换后现金余额(分) |
## 错误码
- `400` `coin_amount` 不满足 ≥ `min_coin` 且为 `step_coin` 整数倍
- `409` 金币余额不足
## 说明
兑换规则见 [wallet-exchange-info](./wallet-exchange-info.md)。金币与现金的扣加在同一事务内完成。