我需要将角度为4的json转换为xml。客户端已经编写了一个WCF，它将接受该方法的xml参数。 因为显而易见的原因，我们在角度上使用json。
我们决定编写一个json对象并将其转换为xml。 我已经知道如何做相反的方式，xml到json：
xml2json(xml, tab) {
var X = {
toObj: function (xml) {
var o = {};
if (xml.nodeType == 1) { // element node ..
if (xml.attributes.length) // element with attributes ..
for (var i = 0; i < xml.attributes.length; i++)
o["@" + xml.attributes[i].nodeName] = (xml.attributes[i].nodeValue || "").toString();
if (xml.firstChild) { // element has child nodes ..
var textChild = 0, cdataChild = 0, hasElementChild = false;
for (var n = xml.firstChild; n; n = n.nextSibling) {
if (n.nodeType == 1) hasElementChild = true;
else if (n.nodeType == 3 && n.nodeValue.match(/[^ \f\n\r\t\v]/)) textChild++; // non-whitespace text
else if (n.nodeType == 4) cdataChild++; // cdata section node
}
if (hasElementChild) {
if (textChild < 2 && cdataChild < 2) { // structured element with evtl. a single text or/and cdata node ..
X.removeWhite(xml);
for (var n = xml.firstChild; n; n = n.nextSibling) {
if (n.nodeType == 3) // text node
o["#text"] = X.escape(n.nodeValue);
else if (n.nodeType == 4) // cdata node
o["#cdata"] = X.escape(n.nodeValue);
else if (o[n.nodeName]) { // multiple occurence of element ..
if (o[n.nodeName] instanceof Array)
o[n.nodeName][o[n.nodeName].length] = X.toObj(n);
else
o[n.nodeName] = [o[n.nodeName], X.toObj(n)];
}
else // first occurence of element..
o[n.nodeName] = X.toObj(n);
}
}
else { // mixed content
if (!xml.attributes.length)
o = X.escape(X.innerXml(xml));
else
o["#text"] = X.escape(X.innerXml(xml));
}
}
else if (textChild) { // pure text
if (!xml.attributes.length)
o = X.escape(X.innerXml(xml));
else
o["#text"] = X.escape(X.innerXml(xml));
}
else if (cdataChild) { // cdata
if (cdataChild > 1)
o = X.escape(X.innerXml(xml));
else
for (var n = xml.firstChild; n; n = n.nextSibling)
o["#cdata"] = X.escape(n.nodeValue);
}
}
if (!xml.attributes.length && !xml.firstChild) o = null;
}
else if (xml.nodeType == 9) { // document.node
o = X.toObj(xml.documentElement);
}
else
alert("unhandled node type: " + xml.nodeType);
return o;
},
toJson: function (o, name, ind) {
var json = name ? ("\"" + name + "\"") : "";
if (o instanceof Array) {
for (var i = 0, n = o.length; i < n; i++)
o[i] = X.toJson(o[i], "", ind + "\t");
json += (name ? ":[" : "[") + (o.length > 1 ? ("\n" + ind + "\t" + o.join(",\n" + ind + "\t") + "\n" + ind) : o.join("")) + "]";
}
else if (o == null)
json += (name && ":") + "null";
else if (typeof (o) == "object") {
var arr = [];
for (var m in o)
arr[arr.length] = X.toJson(o[m], m, ind + "\t");
json += (name ? ":{" : "{") + (arr.length > 1 ? ("\n" + ind + "\t" + arr.join(",\n" + ind + "\t") + "\n" + ind) : arr.join("")) + "}";
}
else if (typeof (o) == "string")
json += (name && ":") + "\"" + o.toString() + "\"";
else
json += (name && ":") + o.toString();
return json;
},
innerXml: function (node) {
var s = ""
if ("innerHTML" in node)
s = node.innerHTML;
else {
var asXml = function (n) {
var s = "";
if (n.nodeType == 1) {
s += "<" + n.nodeName;
for (var i = 0; i < n.attributes.length; i++)
s += " " + n.attributes[i].nodeName + "=\"" + (n.attributes[i].nodeValue || "").toString() + "\"";
if (n.firstChild) {
s += ">";
for (var c = n.firstChild; c; c = c.nextSibling)
s += asXml(c);
s += "</" + n.nodeName + ">";
}
else
s += "/>";
}
else if (n.nodeType == 3)
s += n.nodeValue;
else if (n.nodeType == 4)
s += "<![CDATA[" + n.nodeValue + "]]>";
return s;
};
for (var c = node.firstChild; c; c = c.nextSibling)
s += asXml(c);
}
return s;
},
escape: function (txt) {
return txt.replace(/[\\]/g, "\\\\")
.replace(/[\"]/g, '\\"')
.replace(/[\n]/g, '\\n')
.replace(/[\r]/g, '\\r');
},
removeWhite: function (e) {
e.normalize();
for (var n = e.firstChild; n;) {
if (n.nodeType == 3) { // text node
if (!n.nodeValue.match(/[^ \f\n\r\t\v]/)) { // pure whitespace text node
var nxt = n.nextSibling;
e.removeChild(n);
n = nxt;
}
else
n = n.nextSibling;
}
else if (n.nodeType == 1) { // element node
X.removeWhite(n);
n = n.nextSibling;
}
else // any other node
n = n.nextSibling;
}
return e;
}
};
if (xml.nodeType == 9) // document node
xml = xml.documentElement;
var json = X.toJson(X.toObj(X.removeWhite(xml)), xml.nodeName, "\t");
return "{\n" + tab + (tab ? json.replace(/\t/g, tab) : json.replace(/\t|\n/g, "")) + "\n}";
}
现在我需要知道，如何将json对象转换为xml字符串或对象。
提前感谢！
答案 0 :(得分：1)
安装npm i js2xmlparser
import * as JsonToXML from "js2xmlparser";
console.log(JsonToXML.parse("person", this.obj));
this.obj是您的JSON对象
答案 1 :(得分：0)
jsonToXML(json) {
let xml = '';
// tslint:disable: forin
for (const prop in json) {
xml += json[prop] instanceof Array ? '' : '<' + prop + '>';
if (json[prop] instanceof Array) {
for (const array in json[prop]) {
xml += '<' + prop + '>';
xml += this.jsonToXML(new Object(json[prop][array]));
xml += '</' + prop + '>';
}
} else if (typeof json[prop] === 'object') {
xml += this.jsonToXML(new Object(json[prop]));
} else {
xml += json[prop];
}
xml += json[prop] instanceof Array ? '' : '</' + prop + '>';
}
xml = xml.replace(/<\/?[0-9]{1,}>/g, '');
return xml;
}