代码分享js如何实现xml转json

本篇文章给大家分享的内容是js实现xml到json的转化，有着一定的参考价值，有需要的朋友可以参考一下

        <ｓｃｒｉｐｔ src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"> <ｓｃｒｉｐｔ type="text/javascript">// Converts XML to JSON// from: http://coursesweb.net/javascript/convert-xml-json-javascript_s2function XMLtoJSON() { var me = this; // stores the object instantce // gets the content of an xml file and returns it in me.fromFile = function(xml, rstr) { // Cretes a instantce of XMLHttpRequest object var xhttp = (window.XMLHttpRequest) ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP"); // sets and sends the request for calling "xml" xhttp.open("GET", xml ,false); xhttp.send(null); // gets the JSON string var json_str = jsontoStr(setJsonObj(xhttp.responseXML)); // sets and returns the JSON object, if "rstr" undefined (not passed), else, returns JSON string return (typeof(rstr) == 'undefined') ? JSON.parse(json_str) : json_str; } // returns XML DOM from string with xml content me.fromStr = function(xml, rstr) { // for non IE browsers if(window.DOMParser) { var getxml = new DOMParser(); var xmlDoc = getxml.parseFromString(xml,"text/xml"); } else { // for Internet Explorer var xmlDoc = new ActiveXObject("Microsoft.XMLDOM"); xmlDoc.async = "false"; } // gets the JSON string var json_str = jsontoStr(setJsonObj(xmlDoc)); // sets and returns the JSON object, if "rstr" undefined (not passed), else, returns JSON string return (typeof(rstr) == 'undefined') ? JSON.parse(json_str) : json_str; } // receives XML DOM object, returns converted JSON object var setJsonObj = function(xml) { var js_obj = {}; if (xml.nodeType == 1) { if (xml.attributes.length > 0) { js_obj["@attributes"] = {}; for (var j = 0; j < xml.attributes.length; j++) { var attribute = xml.attributes.item(j); js_obj["@attributes"][attribute.nodeName] = attribute.value; } } } else if (xml.nodeType == 3) { js_obj = xml.nodeValue; } if (xml.hasChildNodes()) { for (var i = 0; i < xml.childNodes.length; i++) { var item = xml.childNodes.item(i); var nodeName = item.nodeName; if (typeof(js_obj[nodeName]) == "undefined") { js_obj[nodeName] = setJsonObj(item); } else { if (typeof(js_obj[nodeName].push) == "undefined") { var old = js_obj[nodeName]; js_obj[nodeName] = []; js_obj[nodeName].push(old); } js_obj[nodeName].push(setJsonObj(item)); } } } return js_obj; } // converts JSON object to string (human readablle). // Removes '\t\r\n', rows with multiples '""', multiple empty rows, ' "",', and " ",; ｒｅｐｌａｃｅ empty [] with "" var jsontoStr = function(js_obj) { var rejsn = JSON.stringify(js_obj, undefined, 2).ｒｅｐｌａｃｅ(/(\\t|\\r|\\n)/g, '').ｒｅｐｌａｃｅ(/"",[\n\t\r\s]+""[,]*/g, '').ｒｅｐｌａｃｅ(/(\n[\t\s\r]*\n)/g, '').ｒｅｐｌａｃｅ(/[\s\t]{2,}""[,]{0,1}/g, '').ｒｅｐｌａｃｅ(/"[\s\t]{1,}"[,]{0,1}/g, '').ｒｅｐｌａｃｅ(/\[[\t\s]*\]/g, '""'); return (rejsn.indexOf('"parsererror": {') == -1) ? rejsn : 'Invalid XML format'; }};// creates object instantce of XMLtoJSONvar xml2json = new XMLtoJSON();<ｓｃｒｉｐｔ type="text/javascript"> var xmlstr = `    4578   5777  6667 `;// gets JSON object from a string with xml contentvar objson = xml2json.fromStr(xmlstr);console.log(objson);// gets JSON string from a string with xml contentvar strjson = xml2json.fromStr(xmlstr, 'string');console.log(strjson);