javascript - 消息: 'Cast to number failed for value "undefined"at path in nodejs mongoose express

Question

我收到此错误。当我从集合中获取值时，为什么会出现此错误。尝试了很多解决方案但不起作用

这是我的代码，请解决这个问题

apiRoutes.get('/getdeals/:status/:DealID/:SinceID' , function(req, res, next) {
  var DealStatus = req.status;
  var DealID =req.DealID;
  var SinceID = req.SinceID;

    if(DealStatus==1){
      Adddeal.find({
      $and: [
          { DealID: { $gt: SinceID }},
          { DealStatus: {$eq: 1}}
      ]
  }, function (err, results) {
      if (err) return console.error(err);
      res.json(result);
  });
    }else if(DealStatus==0){
       Adddeal.find({
      $and: [
          { DealID: { $gt: SinceID }},
          { DealStatus: {$eq: 0}}
      ]
  }, function (err, results) {
      if (err) return console.error(err);
      res.json(result);
  });
    }else{
            Adddeal.find({
          DealID: { $gt: SinceID }
  }, function (err, results) {
      if (err) return console.error(err);
      res.json(result);
  });
    }
});

错误是:

{ message: 'Cast to number failed for value "undefined" at path "DealID"',
  name: 'CastError',
  kind: 'number',
  value: undefined,
  path: 'DealID',
  reason: undefined }

Answer 1

var DealStatus = req.params.status;
var DealID =req.params.DealID;
varSinceID = req.params.SinceID;请纠正 if-else 条件下的这些非常小的错误if(交易状态==1)
else if(DealStatus==0)