ajax根据坐标查询WMS地图服务属性信息

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">

     <meta http-equiv="X-UA-Compatible" content="ie=edge">

     <title>demo</title>

     <style>

     </style>

 </head>

 <body>

     <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>

     <script type="text/javascript" src="jquery.xml2json.js"></script>

     <script>

         $.ajax({

             url: "http://127.0.0.1:6080/arcgis/services/Mymap/MapServer/WMSServer",

             data: {

                 version: '1.3.0',

                 request: 'getfeatureinfo',

                 layers: '0',

                 styles: '',

                 CRS: 'EPSG:4326',

                 bbox: '28.123462,120.123272,29.481238,120.123941',//xmin,ymin,xmax,ymax

                 width: '1730',

                 height: '919',

                 info_format: 'text/xml',

                 x: '760',

                 y: '229',

                 query_layers: "0"

             },

             dataType: 'xml',

             success: function(data) {

                 console.log(data);

             },

             error: function(e) {

                 console.log(e);

             }

         });

     </script>

 </body>

 </html>

 /*

  ### jQuery XML to JSON Plugin v1.3 - 2013-02-18 ###

  * http://www.fyneworks.com/ - diego@fyneworks.com

     * Licensed under http://en.wikipedia.org/wiki/MIT_License

  ###

  Website: http://www.fyneworks.com/jquery/xml-to-json/

 */

 /*

  # INSPIRED BY: http://www.terracoder.com/

            AND: http://www.thomasfrank.se/xml_to_json.html

                                             AND: http://www.kawa.net/works/js/xml/objtree-e.html

 */

 /*

  This simple script converts XML (document of code) into a JSON object. It is the combination of 2

  'xml to json' great parsers (see below) which allows for both 'simple' and 'extended' parsing modes.

 */

 // Avoid collisions

 ;

 if (window.jQuery)(function($) {

     // Add function to jQuery namespace

     $.extend({

         // converts xml documents and xml text to json object

         xml2json: function(xml, extended) {

             if (!xml) return {}; // quick fail

             //### PARSER LIBRARY

             // Core function

             function parseXML(node, simple) {

                 if (!node) return null;

                 var txt = '',

                     obj = null,

                     att = null;

                 var nt = node.nodeType,

                     nn = jsVar(node.localName || node.nodeName);

                 var nv = node.text || node.nodeValue || '';

                 /*DBG*/ //if(window.console) console.log(['x2j',nn,nt,nv.length+' bytes']);

                 if (node.childNodes) {

                     if (node.childNodes.length > 0) {

                         /*DBG*/ //if(window.console) console.log(['x2j',nn,'CHILDREN',node.childNodes]);

                         $.each(node.childNodes, function(n, cn) {

                             var cnt = cn.nodeType,

                                 cnn = jsVar(cn.localName || cn.nodeName);

                             var cnv = cn.text || cn.nodeValue || '';

                             /*DBG*/ //if(window.console) console.log(['x2j',nn,'node>a',cnn,cnt,cnv]);

                             if (cnt == 8) {

                                 /*DBG*/ //if(window.console) console.log(['x2j',nn,'node>b',cnn,'COMMENT (ignore)']);

                                 return; // ignore comment node

                             } else if (cnt == 3 || cnt == 4 || !cnn) {

                                 // ignore white-space in between tags

                                 if (cnv.match(/^\s+$/)) {

                                     /*DBG*/ //if(window.console) console.log(['x2j',nn,'node>c',cnn,'WHITE-SPACE (ignore)']);

                                     return;

                                 };

                                 /*DBG*/ //if(window.console) console.log(['x2j',nn,'node>d',cnn,'TEXT']);

                                 txt += cnv.replace(/^\s+/, '').replace(/\s+$/, '');

                                 // make sure we ditch trailing spaces from markup

                             } else {

                                 /*DBG*/ //if(window.console) console.log(['x2j',nn,'node>e',cnn,'OBJECT']);

                                 obj = obj || {};

                                 if (obj[cnn]) {

                                     /*DBG*/ //if(window.console) console.log(['x2j',nn,'node>f',cnn,'ARRAY']);

                                     // http://forum.jquery.com/topic/jquery-jquery-xml2json-problems-when-siblings-of-the-same-tagname-only-have-a-textnode-as-a-child

                                     if (!obj[cnn].length) obj[cnn] = myArr(obj[cnn]);

                                     obj[cnn] = myArr(obj[cnn]);

                                     obj[cnn][obj[cnn].length] = parseXML(cn, true /* simple */ );

                                     obj[cnn].length = obj[cnn].length;

                                 } else {

                                     /*DBG*/ //if(window.console) console.log(['x2j',nn,'node>g',cnn,'dig deeper...']);

                                     obj[cnn] = parseXML(cn);

                                 };

                             };

                         });

                     }; //node.childNodes.length>0

                 }; //node.childNodes

                 if (node.attributes) {

                     if (node.attributes.length > 0) {

                         /*DBG*/ //if(window.console) console.log(['x2j',nn,'ATTRIBUTES',node.attributes])

                         att = {};

                         obj = obj || {};

                         $.each(node.attributes, function(a, at) {

                             var atn = jsVar(at.name),

                                 atv = at.value;

                             att[atn] = atv;

                             if (obj[atn]) {

                                 /*DBG*/ //if(window.console) console.log(['x2j',nn,'attr>',atn,'ARRAY']);

                                 // http://forum.jquery.com/topic/jquery-jquery-xml2json-problems-when-siblings-of-the-same-tagname-only-have-a-textnode-as-a-child

                                 //if(!obj[atn].length) obj[atn] = myArr(obj[atn]);//[ obj[ atn ] ];

                                 obj[cnn] = myArr(obj[cnn]);

                                 obj[atn][obj[atn].length] = atv;

                                 obj[atn].length = obj[atn].length;

                             } else {

                                 /*DBG*/ //if(window.console) console.log(['x2j',nn,'attr>',atn,'TEXT']);

                                 obj[atn] = atv;

                             };

                         });

                         //obj['attributes'] = att;

                     }; //node.attributes.length>0

                 }; //node.attributes

                 if (obj) {

                     obj = $.extend((txt != '' ? new String(txt) : {}), /* {text:txt},*/ obj || {} /*, att || {}*/ );

                     //txt = (obj.text) ? (typeof(obj.text)=='object' ? obj.text : [obj.text || '']).concat([txt]) : txt;

                     txt = (obj.text) ? ([obj.text || '']).concat([txt]) : txt;

                     if (txt) obj.text = txt;

                     txt = '';

                 };

                 var out = obj || txt;

                 //console.log([extended, simple, out]);

                 if (extended) {

                     if (txt) out = {}; //new String(out);

                     txt = out.text || txt || '';

                     if (txt) out.text = txt;

                     if (!simple) out = myArr(out);

                 };

                 return out;

             }; // parseXML

             // Core Function End

             // Utility functions

             var jsVar = function(s) { return String(s || '').replace(/-/g, "_"); };

             // NEW isNum function: 01/09/2010

             // Thanks to Emile Grau, GigaTecnologies S.L., www.gigatransfer.com, www.mygigamail.com

             function isNum(s) {

                 // based on utility function isNum from xml2json plugin (http://www.fyneworks.com/ - diego@fyneworks.com)

                 // few bugs corrected from original function :

                 // - syntax error : regexp.test(string) instead of string.test(reg)

                 // - regexp modified to accept  comma as decimal mark (latin syntax : 25,24 )

                 // - regexp modified to reject if no number before decimal mark  : ".7" is not accepted

                 // - string is "trimmed", allowing to accept space at the beginning and end of string

                 var regexp = /^((-)?([0-9]+)(([\.\,]{0,1})([0-9]+))?$)/

                 return (typeof s == "number") || regexp.test(String((s && typeof s == "string") ? jQuery.trim(s) : ''));

             };

             // OLD isNum function: (for reference only)

             //var isNum = function(s){ return (typeof s == "number") || String((s && typeof s == "string") ? s : '').test(/^((-)?([0-9]*)((\.{0,1})([0-9]+))?$)/); };

             var myArr = function(o) {

                 // http://forum.jquery.com/topic/jquery-jquery-xml2json-problems-when-siblings-of-the-same-tagname-only-have-a-textnode-as-a-child

                 //if(!o.length) o = [ o ]; o.length=o.length;

                 if (!$.isArray(o)) o = [o];

                 o.length = o.length;

                 // here is where you can attach additional functionality, such as searching and sorting...

                 return o;

             };

             // Utility functions End

             //### PARSER LIBRARY END

             // Convert plain text to xml

             if (typeof xml == 'string') xml = $.text2xml(xml);

             // Quick fail if not xml (or if this is a node)

             if (!xml.nodeType) return;

             if (xml.nodeType == 3 || xml.nodeType == 4) return xml.nodeValue;

             // Find xml root node

             var root = (xml.nodeType == 9) ? xml.documentElement : xml;

             // Convert xml to json

             var out = parseXML(root, true /* simple */ );

             // Clean-up memory

             xml = null;

             root = null;

             // Send output

             return out;

         },

         // Convert text to XML DOM

         text2xml: function(str) {

             // NOTE: I'd like to use jQuery for this, but jQuery makes all tags uppercase

             //return $(xml)[0];

             /* prior to jquery 1.9 */

             /*

             var out;

             try{

              var xml = ((!$.support.opacity && !$.support.style))?new ActiveXObject("Microsoft.XMLDOM"):new DOMParser();

              xml.async = false;

             }catch(e){ throw new Error("XML Parser could not be instantiated") };

             try{

              if((!$.support.opacity && !$.support.style)) out = (xml.loadXML(str))?xml:false;

              else out = xml.parseFromString(str, "text/xml");

             }catch(e){ throw new Error("Error parsing XML string") };

             return out;

             */

             /* jquery 1.9+ */

             return $.parseXML(str);

         }

     }); // extend $

 })(jQuery);

我测试的是ArcServer发布的wms服务，geoserver发布的wms服务请自行测试。

附上xml2json代码，感谢原作者xtreemrage,github链接https://github.com/xtreemrage/jquery.xml2json

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