var mysql = require('mysql');
var inquirer = require('inquirer');
var connection = mysql.createConnection({
    host: "localhost",
    port: 8889,
    user: "root",
    password: "root",
    database: "bamazon"
})

connection.connect(function(err) {
    if (err) throw err;
    displayProducts();
})

var displayProducts = function () {
  var query = "SELECT * FROM Products"
  connection.query(query, function(err, res) {
      for (var i = 0; i < res.length; i++) {
          console.log("Item ID: " + res[i].itemID + " || Product: " + res[i].productName + " || Department: " + res[i].productDepartment + " || Price: " + res[i].price + " || Stock: " + res[i].stockQuantity);
      }
      shoppingCart();
    })
};

cli错误消息屏幕截图
如果我读对了，这和我的长度有关，但我不认为这行有问题，所以有什么帮助吗？