# query_transfer 工具文档
## 功能说明
官方 12306 一次中转换乘方案查询。输入出发站、到达站、日期，返回一次换乘的最优方案，含所有中转车次、时刻、余票、历时等详细信息。
## 使用方法
### 请求参数
```json
{
"from_station": "九江",
"to_station": "永修",
"train_date": "2025-06-01",
"middle_station": "",
"isShowWZ": "N",
"purpose_codes": "00"
}
```
### 返回示例（JSON格式）
```json
{
"jsonrpc": "2.0",
"id": 1,
"result": {
"content": [
{
"type": "text",
"text": "{\"success\":true,\"from_station\":\"九江\",\"to_station\":\"永修\",\"train_date\":\"2025-06-01\",\"count\":2,\"transfers\":[...]}"
}
]
}
}
```
### 解析后的JSON数据
```json
{
"success": true,
"from_station": "九江",
"to_station": "永修",
"train_date": "2025-06-01",
"count": 2,
"transfers": [
{
"middle_station": "南昌",
"total_duration": "02:10",
"wait_time": "00:30",
"segments": [
{
"train_no": "G1234",
"from_station": "九江",
"to_station": "南昌",
"start_time": "08:00",
"arrive_time": "08:30",
"duration": "00:30",
"seats": {
"second_class": "有",
"no_seat": "有"
}
},
{
"train_no": "G5678",
"from_station": "南昌",
"to_station": "永修",
"start_time": "09:00",
"arrive_time": "09:40",
"duration": "00:40",
"seats": {
"second_class": "15",
"no_seat": "有"
}
}
]
}
]
}
```
### 返回字段说明
- `success`: 布尔值，表示查询是否成功
- `from_station`: 出发站名称
- `to_station`: 到达站名称
- `train_date`: 出发日期
- `count`: 中转方案数量
- `transfers`: 中转方案列表
- `middle_station`: 中转站
- `total_duration`: 总历时
- `wait_time`: 等候时间
- `segments`: 车次段列表（两段）
- `train_no`: 车次号
- `from_station`: 出发站
- `to_station`: 到达站
- `start_time`: 出发时间
- `arrive_time`: 到达时间
- `duration`: 历时
- `seats`: 座位余票信息
