zhibo/android-app/后端接口TODO清单-直播间弹幕.md

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# 后端接口 TODO 清单 - 直播间弹幕模块
## 1. 发送直播间弹幕消息
**文件**: `RoomDetailActivity.java`
**接口路径**: `POST /api/rooms/{roomId}/messages`
**请求参数**:
```json
{
"roomId": "string",
"message": "string",
"userId": "string"
}
```
**返回数据**:
```json
{
"code": 200,
"data": {
"messageId": "string",
"userId": "string",
"username": "string",
"avatarUrl": "string",
"message": "string",
"timestamp": "number"
}
}
```
## 2. 获取历史弹幕消息
**文件**: `RoomDetailActivity.java`
**接口路径**: `GET /api/rooms/{roomId}/messages`
**请求参数**:
- roomId: 房间ID路径参数
- limit (可选): 获取最近N条消息默认50
**返回数据**:
```json
{
"code": 200,
"data": [
{
"messageId": "string",
"userId": "string",
"username": "string",
"avatarUrl": "string",
"message": "string",
"timestamp": "number"
}
]
}
```
## 3. 接收实时弹幕消息WebSocket
**文件**: `RoomDetailActivity.java`
**WebSocket 连接**: `ws://api.example.com/rooms/{roomId}/chat`
**接收消息格式**:
```json
{
"type": "message",
"data": {
"messageId": "string",
"userId": "string",
"username": "string",
"avatarUrl": "string",
"message": "string",
"timestamp": "number"
}
}
```
**备选方案**: 轮询获取新消息
- 接口路径: `GET /api/rooms/{roomId}/messages?lastMessageId={lastId}`
- 每3-5秒轮询一次获取lastMessageId之后的新消息