我正在尝试将从Google电子表格中解析JSON数据的JS文件调整为用于将标签打印到Dymo打印机的格式。脚本如下所示：
//----------------------------------------------------------------------------
//
// $Id: GoogleSpreadSheet.js 38773 2015-09-17 11:45:41Z nmikalko $
//
// Project -------------------------------------------------------------------
//
// DYMO Label Framework
//
// Content -------------------------------------------------------------------
//
// DYMO Label Framework JavaScript Library Samples:
// Print mulltiple labels using Google Spreadsheet as a data source
//
//----------------------------------------------------------------------------
//
// Copyright (c), 2010, Sanford, L.P. All Rights Reserved.
//
//----------------------------------------------------------------------------
(function() {
var label;
var labelSet;
function onload() {
var printButton = document.getElementById('printButton');
var printersSelect = document.getElementById('printersSelect');
function createLabelSet(json) {
console.log('starting to parse the JSON for the labels');
var labelSet = new dymo.label.framework.LabelSetBuilder();
for (var i = 0; i < json.length; ++i) {
var assetID = assetID[i];
console.log(assetID.id);
var assetID = assetID[i];
var staffName = staffName[i];
var serialNumber = serialNumber[i];
var assetTag = assetTag[i];
var address = assetID + '\n' + staffName + '\n' + serialNumber + '\n' + assetTag;
var record = labelSet.addRecord();
record.setText("Address", address);
}
return labelSet;
}
function loadSpreadSheetDataCallback(json) {
labelSet = createLabelSet(json);
};
window._loadSpreadSheetDataCallback = loadSpreadSheetDataCallback;
function loadSpreadSheetData() {
removeOldJSONScriptNodes();
var script = document.createElement('script');
console.log('starting to create the new elements');
script.setAttribute('src', 'getLabelsJSON.php?');
script.setAttribute('id', 'printScript');
script.setAttribute('type', 'text/javascript');
document.documentElement.firstChild.appendChild(script);
console.log(script);
};
function removeOldJSONScriptNodes() {
var jsonScript = document.getElementById('printScript');
if (jsonScript)
jsonScript.parentNode.removeChild(jsonScript);
};
// create address label xml
function getAddressLabelXml() {
var labelXml = '<?xml version="1.0" encoding="utf-8"?>\
<DieCutLabel Version="8.0" Units="twips">\
<PaperOrientation>Landscape</PaperOrientation>\
<Id>Address</Id>\
<PaperName>30252 Address</PaperName>\
<DrawCommands>\
<RoundRectangle X="0" Y="0" Width="1581" Height="5040" Rx="270" Ry="270" />\
</DrawCommands>\
<ObjectInfo>\
<AddressObject>\
<Name>Address</Name>\
<ForeColor Alpha="255" Red="0" Green="0" Blue="0" />\
<BackColor Alpha="0" Red="255" Green="255" Blue="255" />\
<LinkedObjectName></LinkedObjectName>\
<Rotation>Rotation0</Rotation>\
<IsMirrored>False</IsMirrored>\
<IsVariable>True</IsVariable>\
<HorizontalAlignment>Left</HorizontalAlignment>\
<VerticalAlignment>Middle</VerticalAlignment>\
<TextFitMode>ShrinkToFit</TextFitMode>\
<UseFullFontHeight>True</UseFullFontHeight>\
<Verticalized>False</Verticalized>\
<StyledText>\
<Element>\
<String>DYMO\
828 San Pablo Ave Ste 101\
Albany, CA 94706-1678</String>\
<Attributes>\
<Font Family="Arial" Size="12" Bold="False" Italic="False" Underline="False" Strikeout="False" />\
<ForeColor Alpha="255" Red="0" Green="0" Blue="0" />\
</Attributes>\
</Element>\
</StyledText>\
<ShowBarcodeFor9DigitZipOnly>False</ShowBarcodeFor9DigitZipOnly>\
<BarcodePosition>AboveAddress</BarcodePosition>\
<LineFonts>\
<Font Family="Arial" Size="12" Bold="False" Italic="False" Underline="False" Strikeout="False" />\
<Font Family="Arial" Size="12" Bold="False" Italic="False" Underline="False" Strikeout="False" />\
<Font Family="Arial" Size="12" Bold="False" Italic="False" Underline="False" Strikeout="False" />\
</LineFonts>\
</AddressObject>\
<Bounds X="332" Y="150" Width="4455" Height="1260" />\
</ObjectInfo>\
</DieCutLabel>';
return labelXml;
}
function loadLabel() {
// use jQuery API to load label
//$.get("Address.label", function (labelXml) {
label = dymo.label.framework.openLabelXml(getAddressLabelXml());
// }, "text");
}
// loads all supported printers into a combo box
function loadPrinters() {
var printers = dymo.label.framework.getLabelWriterPrinters();
if (printers.length == 0) {
alert("No DYMO LabelWriter printers are installed. Install DYMO LabelWriter printers.");
return;
}
for (var i = 0; i < printers.length; ++i) {
var printer = printers[i];
var printerName = printer.name;
var option = document.createElement('option');
option.value = printerName;
option.appendChild(document.createTextNode(printerName));
printersSelect.appendChild(option);
}
}
// prints the label
printButton.onclick = function() {
try {
if (!label)
throw "Label is not loaded";
if (!labelSet)
throw "Label data is not loaded";
label.print(printersSelect.value, '', labelSet);
// var records = labelSet.getRecords();
// for (var i = 0; i < records.length; ++i)
// {
// label.setObjectText("Address", records[i]["Address"]);
// var pngData = label.render();
//
// var labelImage = document.getElementById('img' + (i + 1));
// labelImage.src = "data:image/png;base64," + pngData;
// }
} catch (e) {
alert(e.message || e);
}
};
loadLabel();
loadSpreadSheetData();
loadPrinters();
};
function initTests() {
if (dymo.label.framework.init) {
//dymo.label.framework.trace = true;
dymo.label.framework.init(onload);
} else {
onload();
}
}
// register onload event
if (window.addEventListener)
window.addEventListener("load", initTests, false);
else if (window.attachEvent)
window.attachEvent("onload", initTests);
else
window.onload = initTests;
})();
DYMO.Label.Framework可在以下网址找到：
http://www.labelwriter.com/software/dls/sdk/js/DYMO.Label.Framework.2.0.2.js
我需要运行createLabelSet(json)，因为它在循环中解析JSON，但似乎没有运行。我添加了一个日志条目：
console.log('starting to parse the JSON for the labels');
但是我没有在浏览器控制台中看到这一点。我对JavaScript很新，所以不太清楚为什么在加载页面时这个函数没有运行？
修改
将最后一行从}());更改为})();，但仍未在控制台中获取任何内容 - 而不是应显示的starting to parse the JSON for the labels条目。
答案 0 :(得分：0)
您没有看到预期输出的原因是因为您的onload()函数从未被调用过。有几种方法可以在页面加载时运行该功能; this SO answer很好地描述了其中一些。
例如，将此行添加到代码中会在页面加载时执行onload()函数：
window.addEventListener("load", onload, false);
MDN有load个 protected void btninsert_Click(object sender, EventArgs e)
{
foreach (GridViewRow g1 in GridView1.Rows)
{
conStr = ConfigurationManager.ConnectionStrings["SqlConString"].ConnectionString;
SqlConnection con = new SqlConnection(conStr);
SqlCommand com = new SqlCommand("insert into MedicalItems (ITEM NAME,GROUP,ITEM TYPE,COST PRICE,SELLING PRICE,PURCHASE UOM,PURCHASE PACKAGING,DISPENSING UOM,QTY ON HAND,EXPIRY DATE,REORDER LEVEL,REORDER QUANTITY,BATCH#) values ('" + g1.Cells[0].Text + "','" + g1.Cells[1].Text + "','" + g1.Cells[2].Text + "','" + g1.Cells[3].Text + "','" + g1.Cells[4].Text + "','" + g1.Cells[5].Text + "','" + g1.Cells[6].Text + "','" + g1.Cells[7].Text + "','" + g1.Cells[8].Text + "','" + g1.Cells[9].Text + "','" + g1.Cells[10].Text + "','" + g1.Cells[11].Text + "','" + g1.Cells[12].Text + "','" + g1.Cells[13].Text + "')", con);
con.Open();
com.ExecuteNonQuery();
con.Close();
}
Label2.Text = "Records inserted successfully";
}
事件，如果您想阅读它。