我正在尝试进行一些数据库查询并检查一些数据。如果某些条件不匹配,则应该使用next(err)向前创建错误。
问题是,它向mir发送错误作为响应,但尝试继续进行..所以我在我的节点js应用中收到了错误。
Purchase.findAndCount({where: {fk_product: productId, fk_buyer: req.decoded.id}}).then((numPurchases) => {
// product purchased?
if (numPurchases.count < 1) {
const errNotBought = new Error("you did not buy this product");
errNotBought.status = 403;
return next(errNotBought); // <--- it should break up here
}
}).then(() => {
res.send({status: true, data: 'product'}) // <-- stacktrace point this line
})
错误是:未处理的拒绝错误[ERR_HTTP_HEADERS_SENT]:将标头发送到客户端后无法设置标头
答案 0 :(得分:1)
Purchase.findAndCount({where: {fk_product: productId, fk_buyer: req.decoded.id}}).then(numPurchases => {
// product purchased?
if (numPurchases.count < 1) {
const errNotBought = new Error("you did not buy this product");
errNotBought.status = 403;
next(errNotBought); // <--- it should break up here
} else {
res.send({status: true, data: 'product'});
}
});
仅从当前的回调函数返回,它不会以任何方式停止承诺链。您正在寻找
cmp