Question

我有一个Node.js应用程序，它将数据写入MySQL后端。一个字段是一个字符串化的数组。我可以在工作台中看到数据在数据库中是正确的。但是，当我检索它时，我尝试解析它时收到错误。

“位置1的JSON中出现意外的令牌o”

如果我记录结果，则显示为[Object Object]。

从我在网上看到的，这意味着它已经是一个JS对象了，我不需要解析它。但是，我找不到任何有关如何访问数据的信息。

process: function (bot, msg, suffix) {

    var ftcmds = suffix.split(" ", 1);
    var ftName = ftcmds[0];
    var ftArray;
    var selectSQL = "SELECT FireTeam FROM fireteam WHERE Name = '" + ftName + "'";
    var updateSQL = "UPDATE fireteam SET FireTeam = '" + ftArray + "'WHERE Name = '" + ftName + "'";

    mysqlcon.query(selectSQL, function (err, result) {
        console.log("Result  |" + result);
        console.log("Error   |" + err);
        if (err) {
            console.log("Caught Error " + err + "  " + msg.author);
        }
        else {
            console.log("Recovered result " + result);

            ftArray = result;
            console.log("Attempting to update array");

            ftArray.push(msg.author.id);
            console.log("updated array " + ftArray);

            var jsonArray = JSON.stringify(ftArray);
            mysqlcon.query(updateSQL, function (err, result) {
                console.log("Result  |" + result);
                console.log("Error   |" + err);

                if (err.toString().indexOf(dupErr) != -1) {
                    msg.author.send("Could not find that fireteam");
                    console.log("Error: Did not locate the requested name " + msg.author)
                } else if (err) {
                    console.log("Caught Error " + err + "  " + msg.author);
                }
                else {
                    msg.author.send("You have joined Fireteam " + name + ". I will setup a group chat on " + date + " if your team fills up.");
                }
            })
        }
    });
}

Answer 1

您应该只能将其作为对象进行访问，因此如果结果包含字段名称和标题，则只需访问它们：

Select Case Me!frmFilter.Value
    Case 1  'All
        Forms![InventoryList]![InventoryList subform].Form.FilterOn = False
    Case 2  'Active
        strFilter = "[StartDate] > Date()"
        Forms![InventoryList]![InventoryList subform].Form.Filter = strFilter
        Forms![InventoryList]![InventoryList subform].Form.FilterOn = True
    Case 3  'Pending
        'do something else
End Select

无法解析从MySQL

1 个答案: