使用js对json数据和xml数据的转化

function xml2json(xml,  // element or document DOM node
                  tab)  // tab or indent string for pretty output formatting
                        // omit or use empty string "" to supress.
                        // returns JSON string

function json2xml(obj,  // javascript object 
                  tab)  // tab or indent string for pretty output formatting
                        // omit or use empty string "" to supress.
                        // returns XML string

/*	This work is licensed under Creative Commons GNU LGPL License.

	License: http://creativecommons.org/licenses/LGPL/2.1/
   Version: 0.9
	Author:  Stefan Goessner/2006
	Web:     http://goessner.net/ 
*/
function json2xml(o, tab) {
   var toXml = function(v, name, ind) {
      var xml = "";
      if (v instanceof Array) {
         for (var i=0, n=v.length; i" : "/>";
         if (hasChild) {
            for (var m in v) {
               if (m == "#text")
                  xml += v[m];
               else if (m == "#cdata")
                  xml += "";
               else if (m.charAt(0) != "@")
                  xml += toXml(v[m], m, ind+"\t");
            }
            xml += (xml.charAt(xml.length-1)=="\n"?ind:"") + "";
         }
      }
      else {
         xml += ind + "<" + name + ">" + v.toString() +  "";
      }
      return xml;
   }, xml="";
   for (var m in o)
      xml += toXml(o[m], m, "");
   return tab ? xml.replace(/\t/g, tab) : xml.replace(/\t|\n/g, "");
}

/*	This work is licensed under Creative Commons GNU LGPL License.

	License: http://creativecommons.org/licenses/LGPL/2.1/
   Version: 0.9
	Author:  Stefan Goessner/2006
	Web:     http://goessner.net/ 
*/
function 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 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 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";
                  }
                  else
                     s += "/>";
               }
               else if (n.nodeType == 3)
                  s += n.nodeValue;
               else if (n.nodeType == 4)
                  s += "";
               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}";
}

以上内容均来自于： http://goessner.net/download/prj/jsonxml/

可以将json完美转化成xml，很好用，很强大 。