Convert XML to JSON (and back) using Javascript

问题:

How would you convert from XML to JSON and then back to XML?

The following tools work quite well, but aren't completely consistent:

• xml2json

Has anyone encountered this situation before?

回答1:

I think this is the best one: Converting between XML and JSON

Be sure to read the accompanying article on the xml.com O'Reilly site, which goes into details of the problems with these conversions, which I think you will find enlightening. The fact that O'Reilly is hosting the article should indicate that Stefan's solution has merit.

回答2:

https://github.com/abdmob/x2js - my own library (updated URL from http://code.google.com/p/x2js/):

This library provides XML to JSON (JavaScript Objects) and vice versa javascript conversion functions. The library is very small and doesn't require any other additional libraries.

API functions

• new X2JS() - to create your instance to access all library functionality. Also you could specify optional configuration options here
• X2JS.xml2json - Convert XML specified as DOM Object to JSON
• X2JS.json2xml - Convert JSON to XML DOM Object
• X2JS.xml_str2json - Convert XML specified as string to JSON
• X2JS.json2xml_str - Convert JSON to XML string

Online Demo on http://jsfiddle.net/abdmob/gkxucxrj/1/

var x2js = new X2JS(); function convertXml2JSon() {     $("#jsonArea").val(JSON.stringify(x2js.xml_str2json($("#xmlArea").val()))); }  function convertJSon2XML() {     $("#xmlArea").val(x2js.json2xml_str($.parseJSON($("#jsonArea").val()))); }  convertXml2JSon(); convertJSon2XML(); $("#convertToJsonBtn").click(convertXml2JSon); $("#convertToXmlBtn").click(convertJSon2XML); 

回答3:

These answers helped me a lot to make this function:

function xml2json(xml) {   try {     var obj = {};     if (xml.children.length > 0) {       for (var i = 0; i < xml.children.length; i++) {         var item = xml.children.item(i);         var nodeName = item.nodeName;          if (typeof (obj[nodeName]) == "undefined") {           obj[nodeName] = xml2json(item);         } else {           if (typeof (obj[nodeName].push) == "undefined") {             var old = obj[nodeName];              obj[nodeName] = [];             obj[nodeName].push(old);           }           obj[nodeName].push(xml2json(item));         }       }     } else {       obj = xml.textContent;     }     return obj;   } catch (e) {       console.log(e.message);   } } 

As long as you pass in a jquery dom/xml object: for me it was:

Jquery(this).find('content').eq(0)[0] 

where content was the field I was storing my xml in.

回答4:

I would personally recommend this tool. It is an XML to JSON converter.

It is very lightweight and is in pure JavaScript. It needs no dependencies. You can simply add the functions to your code and use it as you wish.

It also takes the XML attributes into considerations.

var xml = ‘<person id=”1234” age=”30”><name>John Doe</name></person>’; var json = xml2json(xml);   console.log(json);  // prints ‘{“person”: {“id”: “1234”, “age”: “30”, “name”: “John Doe”}}’ 

Here's an online demo!

回答5:

A while back I wrote this tool https://bitbucket.org/surenrao/xml2json for my TV Watchlist app, hope this helps too.

Synopsys: A library to not only convert xml to json, but is also easy to debug (without circular errors) and recreate json back to xml. Features :- Parse xml to json object. Print json object back to xml. Can be used to save xml in IndexedDB as X2J objects. Print json object.

回答6:

Disclaimer: I've written fast-xml-parser

Fast XML Parser can help to convert XML to JSON and vice versa. Here is the example;

var options = {     attributeNamePrefix : "@_",     attrNodeName: "attr", //default is 'false'     textNodeName : "#text",     ignoreAttributes : true,     ignoreNameSpace : false,     allowBooleanAttributes : false,     parseNodeValue : true,     parseAttributeValue : false,     trimValues: true,     decodeHTMLchar: false,     cdataTagName: "__cdata", //default is 'false'     cdataPositionChar: "\\c", }; if(parser.validate(xmlData)=== true){//optional     var jsonObj = parser.parse(xmlData,options); } 

If you want to parse JSON or JS object into XML then

//default options need not to set var defaultOptions = {     attributeNamePrefix : "@_",     attrNodeName: "@", //default is false     textNodeName : "#text",     ignoreAttributes : true,     encodeHTMLchar: false,     cdataTagName: "__cdata", //default is false     cdataPositionChar: "\\c",     format: false,      indentBy: "  ",     supressEmptyNode: false }; var parser = new parser.j2xParser(defaultOptions); var xml = parser.parse(json_or_js_obj); 

回答7:

The best way to do it using server side as client side doesn't work well in all scenarios. I was trying to build online json to xml and xml to json converter using javascript and I felt almost impossible as it was not working in all scenarios. Ultimately I ended up doing it server side using Newtonsoft in ASP.MVC. Here is the online converter http://techfunda.com/Tools/XmlToJson

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