Question

我正在使用请求模块在NodeJS的“ express post router”内部进行请求。
我可以很好地在请求中获得“价格”值。
但是我想在请求时使用它，例如console.log（price）的位置。
但它说console.log中没有定义价格
如何将其从请求中撤出，以其他方式使用？

exports.clientOrder = async (req, res, next) => {
  try {

    const { clientID, riderID, clientOrder } = req.body;

    await request(
      {
        method: 'POST',
        uri: 'https://api2....',
        body: data,
        headers: {
          'Content-Type': 'application/x-www-form-urlencoded',
        },
      },
      async (error, response) => {
        if (error) {
          return next(error);
        }
        const price = Math.imul(totalDistance / 1000, 2000);

      },
    );

    // I want to get price value here out of request.
    console.log(price) 
    return res.send('order finished well');
  } catch (error) {
    return next(error);
  }
};

Answer 1

await仅适用于thenable，您可以将request动作包装到Promise中，如下所示：

exports.clientOrder = async (req, res, next) => {
  try {

    const { clientID, riderID, clientOrder } = req.body;

    const price = await new Promise((resolve, reject) => {
      request(
        {
          method: 'POST',
          uri: 'https://api2....',
          body: data,
          headers: {
            'Content-Type': 'application/x-www-form-urlencoded',
          },
        },
        (error, response) => {
          if (error) {
            return reject(error);
          }
          const price = Math.imul(totalDistance / 1000, 2000); // ???
          resolve(price);
        },
      );
    });

    // I want to get price value here out of request.
    console.log(price)
    return res.send('order finished well');
  } catch (error) {
    return next(error);
  }
};

如何从节点“请求”模块中获取数据

1 个答案: