二手车价格评估 API（usedcar.price）

curl -s -X POST "https://api.xujian.tech/openapi/usedcar/price" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: 你的APIKey" \
  -d '{
    "brand": "大众",
    "model": "迈腾",
    "year": "2023",
    "configuration": "330TSI DSG 豪华型",
    "registrationDate": "2022-03",
    "mileage": "8.5",
    "accidentHistory": "0",
    "transferCount": "0",
    "maintenanceRecord": "全程4S店保养",
    "fuelType": "汽油",
    "transmissionType": "自动",
    "displacement": "2.0",
    "color": "黑色",
    "location": "北京",
    "description": "车辆外观完好，内饰9成新，无任何改装"
  }'

{
  "code": 0,
  "msg": "success",
  "data": {
    "priceStart": 12.5,
    "priceEnd": 14.8,
    "tip": "估计信息来源网络内容，仅供参考",
    "apiCode": "usedcar.price",
    "apiName": "二手车价格评估",
    "chargeType": "PER_CALL",
    "balance": 99.5000,
    "costMs": 1200
  }
}

{
  "code": 500,
  "msg": "brand 与 model 至少填一个（填写越完整估值越准确）",
  "data": null
}

{
  "code": 500,
  "msg": "未能评估出该车的价格区间，请补充品牌、型号、上牌时间与行驶里程后重试；本次调用不计费",
  "data": null
}

JSONObject req = JSONUtil.createObj()
        .set("brand", "大众")
        .set("model", "迈腾")
        .set("year", "2023")
        .set("configuration", "330TSI DSG 豪华型")
        .set("registrationDate", "2022-03")
        .set("mileage", "8.5")
        .set("accidentHistory", "0")
        .set("transferCount", "0")
        .set("fuelType", "汽油")
        .set("transmissionType", "自动")
        .set("displacement", "2.0")
        .set("color", "黑色")
        .set("location", "北京");

String body = HttpRequest.post("https://api.xujian.tech/openapi/usedcar/price")
        .header("Content-Type", "application/json")
        .header("X-API-Key", apiKey)
        .timeout(20000)
        .body(req.toString())
        .execute()
        .body();

JSONObject json = JSONUtil.parseObj(body);
if (json.getInt("code") != 0) {
    System.out.println("评估失败（不收费）：" + json.getStr("msg"));
    return;
}
JSONObject data = json.getJSONObject("data");
System.out.printf("评估区间：%.2f 万 ~ %.2f 万%n",
        data.getDouble("priceStart"), data.getDouble("priceEnd"));

import requests


def estimate_price(api_key: str, car: dict):
    """评估二手车价格区间；估不出返回 None 且不扣费"""
    resp = requests.post(
        "https://api.xujian.tech/openapi/usedcar/price",
        json=car,
        headers={"Content-Type": "application/json", "X-API-Key": api_key},
        timeout=30,
    )
    result = resp.json()
    if result.get("code") != 0:
        print("评估失败（不收费）：", result.get("msg"))
        return None
    data = result["data"]
    return data["priceStart"], data["priceEnd"]


if __name__ == "__main__":
    car = {
        "brand": "大众", "model": "迈腾", "year": "2023",
        "registrationDate": "2022-03", "mileage": "8.5",
        "accidentHistory": "0", "transferCount": "0",
        "fuelType": "汽油", "transmissionType": "自动",
        "displacement": "2.0", "color": "黑色", "location": "北京",
    }
    print("评估区间（万元）：", estimate_price("你的APIKey", car))

const resp = await fetch("https://api.xujian.tech/openapi/usedcar/price", {
  method: "POST",
  headers: { "Content-Type": "application/json", "X-API-Key": API_KEY },
  body: JSON.stringify({
    brand: "大众", model: "迈腾", year: "2023",
    registrationDate: "2022-03", mileage: "8.5",
    accidentHistory: "0", location: "北京",
  }),
});

const { code, msg, data } = await resp.json();
if (code === 0) {
  console.log(`评估区间：${data.priceStart} 万 ~ ${data.priceEnd} 万`);
} else {
  console.warn("评估失败（不收费）：", msg);
}