我正在关注https://developer.mozilla.org/en-US/docs/JXON编写一个算法来将xml文件转换为JSON。但是，没有运气。我想我做错了什么！
我应该通过以下方式代替“doc”：
var myObject = new JXONTree(doc);
我试过这个：
<!DOCTYPE html>
<html lang="en">
<head>
<title>Welcome</title>
<script type="text/javascript" src="sample1.js"></script>
<script type="text/javascript">
/*
* Loading xml on the browser page
*/
function loadXML()
{
try
{
if (window.XMLHttpRequest)
{
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}
else
{
// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open("GET", "sample.xml", false);
xmlhttp.send();
}
catch(e)
{
alert("Please enable file access to read config file");
}
var response = xmlhttp.responseXML;
if (response == null)
{
alert("Error in xml file ..Please check config.xml file is valid or not !");
}
return response;
}
function myFun()
{
//Loading config xml
var xmlDoc = loadXML();
var myObject = new JXONTree(xmlDoc);
alert(myObject);
}
</script>
</head>
<body onload="myFun()">
Hello
</body>
</html>
我的sample.xml：
<?xml version="1.0"?>
<!DOCTYPE catalog SYSTEM "catalog.dtd">
<catalog>
<product description="Cardigan Sweater">
<catalog_item gender="Men's">
<item_number>QWZ5671</item_number>
<price>39.95</price>
<size description="Medium">
<color_swatch image="red_cardigan.jpg">Red</color_swatch>
<color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
</size>
<size description="Large">
<color_swatch image="red_cardigan.jpg">Red</color_swatch>
<color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch>
</size>
</catalog_item>
<catalog_item gender="Women's">
<item_number>RRX9856</item_number>
<discount_until>Dec 25, 1995</discount_until>
<price>42.50</price>
<size description="Medium">
<color_swatch image="black_cardigan.jpg">Black</color_swatch>
</size>
</catalog_item>
</product>
<script type="text/javascript"><![CDATA[function matchwo(a,b) {
if (a < b && a < 0) { return 1; }
else { return 0; }
}]]></script>
</catalog>
因此，在运行此操作时，我在Opera中收到如下错误：
请启用文件访问权限以读取配置文件。我在Opera12中启用了Allow File XMLHttpRequest。仍然没有运气！它适用于谷歌浏览器。那么我错过了什么呢？
请帮忙。
谢谢
答案 0 :(得分：0)
传递DOM Document对象。如果您使用XMLHttpRequest检索XML文档，则该文档将作为responseXML属性提供。否则，请使用以下内容：
var parser = new DOMParser(); // only available in some newer browsers
var doc = parser.parseFromString(yourXMLString, 'application/xml');
答案 1 :(得分：0)
为我工作，@ sneha，从icktoofay的答案开始。
我直接在镀铬金丝雀控制台上这样做：
输入：
navigator.userAgent
输出：
"Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1506.0 Safari/537.36"
输入：
prsr = new DOMParser()
输出：
DOMParser {parseFromString: function}
输入：
doc = '<?xml version="1.0"?> <!DOCTYPE catalog SYSTEM "catalog.dtd"> <catalog> <product description="Cardigan Sweater"> <catalog_item gender="Men\'s"> <item_number>QWZ5671</item_number> <price>39.95</price> <size description="Medium"> <color_swatch image="red_cardigan.jpg">Red</color_swatch> <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch> </size> <size description="Large"> <color_swatch image="red_cardigan.jpg">Red</color_swatch> <color_swatch image="burgundy_cardigan.jpg">Burgundy</color_swatch> </size> </catalog_item> <catalog_item gender="Women\'s"> <item_number>RRX9856</item_number> <discount_until>Dec 25, 1995</discount_until> <price>42.50</price> <size description="Medium"> <color_swatch image="black_cardigan.jpg">Black</color_swatch> </size> </catalog_item> </product> <script type="text/javascript"><![CDATA[function matchwo(a,b) { if (a < b && a < 0) { return 1; } else { return 0; } }]]></script> </catalog>'
输入：
doc2 = prsr.parseFromString(doc, 'application/xml')
输出：
#document
<!DOCTYPE catalog SYSTEM "catalog.dtd">
<catalog>...</catalog>
输入：
/*\
|*|
|*| JXON Snippet #3 - Mozilla Developer Network
|*|
|*| https://developer.mozilla.org/en-US/docs/JXON
|*|
\*/
function parseText (sValue) {
if (/^\s*$/.test(sValue)) { return null; }
if (/^(?:true|false)$/i.test(sValue)) { return sValue.toLowerCase() === "true"; }
if (isFinite(sValue)) { return parseFloat(sValue); }
if (isFinite(Date.parse(sValue))) { return new Date(sValue); }
return sValue;
}
输入：
function getJXONTree (oXMLParent) {
var vResult = /* put here the default value for empty nodes! */ true, nLength = 0, sCollectedTxt = "";
if (oXMLParent.hasAttributes()) {
vResult = {};
for (nLength; nLength < oXMLParent.attributes.length; nLength++) {
oAttrib = oXMLParent.attributes.item(nLength);
vResult["@" + oAttrib.name.toLowerCase()] = parseText(oAttrib.value.trim());
}
}
if (oXMLParent.hasChildNodes()) {
for (var oNode, sProp, vContent, nItem = 0; nItem < oXMLParent.childNodes.length; nItem++) {
oNode = oXMLParent.childNodes.item(nItem);
if (oNode.nodeType === 4) { sCollectedTxt += oNode.nodeValue; } /* nodeType is "CDATASection" (4) */
else if (oNode.nodeType === 3) { sCollectedTxt += oNode.nodeValue.trim(); } /* nodeType is "Text" (3) */
else if (oNode.nodeType === 1 && !oNode.prefix) { /* nodeType is "Element" (1) */
if (nLength === 0) { vResult = {}; }
sProp = oNode.nodeName.toLowerCase();
vContent = getJXONTree(oNode);
if (vResult.hasOwnProperty(sProp)) {
if (vResult[sProp].constructor !== Array) { vResult[sProp] = [vResult[sProp]]; }
vResult[sProp].push(vContent);
} else { vResult[sProp] = vContent; nLength++; }
}
}
}
if (sCollectedTxt) { nLength > 0 ? vResult.keyValue = parseText(sCollectedTxt) : vResult = parseText(sCollectedTxt); }
/* if (nLength > 0) { Object.freeze(vResult); } */
return vResult;
}
输入：
doc2.documentElement
输出：
<catalog>…</catalog>
输入：
myObject = getJXONTree(doc2.documentElement);
输出：
myObject
Object {product: Object, script: Object}
product: Object
@description: "Cardigan Sweater"
catalog_item: Array[2]
__proto__: Object
script: Object
@type: "text/javascript"
keyValue: "function matchwo(a,b) { if (a < b && a < 0) { return 1; } else { return 0; } }"
__proto__: Object
__proto__: Object