javascript xml转json的方法：首先通过“loadxml(str) {...}”加载xml数据；然后通过“xmltojson(xmlobj, nodename,isarray){..}”将xml数据转成json对象的数据即可。
本文操作环境：windows7系统、javascript1.8.5版、Dell G3电脑。
1、代码
//加载xml数据
function loadXml(str) {
if (str == null) {
return null;
}
var doc = str;
try{
doc = createXMLDOM();
doc.async = false;
doc.loadXML(str);
}catch(e){
doc = $.parseXML(str);
}
return doc;
}
//xml数据转成json对象的数据
function xmlTojson(xmlObj, nodename, isarray){
var obj = $(xmlObj);
var itemobj = {};
var nodenames = "";
var getAllAttrs = function(node){//递归解析xml 转换成json对象
var _itemobj = {};
var notNull = false;
var nodechilds = node.childNodes;
var childlenght = nodechilds.length;
var _attrs = node.attributes;
var firstnodeName = "#text";
try{
firstnodeName = nodechilds[0].nodeName;
}catch(e){
}
if((childlenght > 0 && firstnodeName != "#text") || _attrs.length > 0){
var _childs = nodechilds;
var _childslength = nodechilds.length;
var _fileName_ = "";
if(undefined != _attrs){
var _attrslength = _attrs.length;
for(var i = 0; i < _attrslength; i++){//解析xml节点属性
var attrname = _attrs[i].nodeName;
var attrvalue = _attrs[i].nodeValue;
_itemobj[attrname] = attrvalue;
}
}
for (var j = 0; j < _childslength; j++) {//解析xml子节点
var _node = _childs[j];
var _fildName = _node.nodeName;
if("#text" == _fildName){break;};
if(_itemobj[_fildName] != undefined){//如果有重复的节点需要转为数组格式
if(!(_itemobj[_fildName] instanceof Array)){
var a = _itemobj[_fildName];
_itemobj[_fildName] = [a];//如果该节点出现大于一个的情况 把第一个的值存放到数组中
}
}
var _fildValue = getAllAttrs(_node);
try{
_itemobj[_fildName].push(_fildValue);
}catch(e){
_itemobj[_fildName] = _fildValue;
_itemobj["length"] = 1;
}
}
}else{
_itemobj = (node.textContent == undefined) ? node.text : node.textContent;
}
return _itemobj;
};
if(nodename){
nodenames = nodename.split("/")
}
for(var i = 0;i < nodenames.length; i++){
obj = obj.find(nodenames[i]);
}
$(obj).each(function(key, item){
if(itemobj[item.nodeName] != undefined){
if(!(itemobj[item.nodeName] instanceof Array)){
var a = itemobj[item.nodeName];
itemobj[item.nodeName] = [a];
}
itemobj[item.nodeName].push(getAllAttrs(item));
}else{
if(nodenames.length > 0){
itemobj[item.nodeName] = getAllAttrs(item);
}else{
itemobj[item.firstChild.nodeName] = getAllAttrs(item.firstChild);
}
}
});
if(nodenames.length > 1){
itemobj = itemobj[nodenames[nodenames.length-1]];
}
if(isarray && !(itemobj instanceof Array) && itemobj != undefined){
itemobj = [itemobj];
}
return itemobj;
}
//实例测试
var dataStr = '<userList><user name="aa" age="32"></user><user name="bb" age="33"></user><user name="cc" age="34"><child name="cc-1" age="3"></child></user></userList>'
var xmlObj = loadXml(dataStr);
var jsonData = xmlTojson(xmlObj, 'userList/user', true);
console.log(jsonData)2、测试结果
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