Question

Parsing xml in Ajax

Asked by: elkhawajah

Hello Experts ..

I am making Ajax call using jQuery to retrieve data from java servlet to be used in autocomplete text box. I am returning XML from servlet, but could not figure out how to parse the xml to array of string to be passed to autocomplete! any idea?

$(document).ready(function() {
	 $("#searchBy").change(function () {		  
         $("#searchBy option:selected").each(function () {
        	 var index = $(this).val();
             $.post("oc", {module:"AutoComplete",searchBy:index}, function(xml) {
                 $("#searchTxt").autocompleteArray(
 	                    [ $("items", xml).text() ], // NOTICE THIS 
 	                    {
 	                        delay:10,
 				minChars:1,
 				matchSubset:1,
 				onItemSelect:selectItem,
 				onFindValue:findValue,
 				parse: parseXML,
 				autoFill:true,
 				maxItemsToShow:10
 				}
 			); // end autocompleteArray
             }); // end post
 
     // this function will parse xml and return as a array of string
     function parseXML(xml) { 
 
         var results = [];
 
         $(xml).find('item').each(function() {
 
             var text = $.trim($(this).find('text').text());
 
             results[results.length] = { 'data': { text: text},
                 'result': text
             };
         });
         return results;
     };
 
The servlet side:
    protected void businessProcessing() throws Exception {
    	String searchBy = getRequest().getParameter("searchBy");
        
        getResponse().setContentType("text/xml");
        PrintWriter out = getResponse().getWriter();
        out.println("<items><item><text>Cisplatin</text></item>" +
        		"<item><text>Capecitabine</text></item>" +
        		"<item><text>Granisetron</text></item>" +
        		"<item><text>Dexamethasone</text></item>");
        out.flush();
        out.close();
    }

                                  
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Asked On
2009-10-18 at 13:06:26ID24822025
Tags

to

Topics

Jquery

,

Asynchronous Javascript and XML (AJAX)

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Answers

 

by: elkhawajahPosted on 2009-10-18 at 13:20:21ID: 25601235

The below is the updated code but I am getting the data like this in the autcomplete:
CisplatinCapecitabineGranisetronDexamethasone
??

$("#searchBy").change(function () {		  
         $("#searchBy option:selected").each(function () {
        	 var index = $(this).val();
             $.post("oc", {module:"AutoComplete",searchBy:index}, function(xml) {
            	 $("#searchTxt").unbind();
            	 $("#searchTxt").val('');        
            	 var data = $('items > item > text', xml).text();
                 $("#searchTxt").autocompleteArray(
 	                    [ data ],
 	                    {
 	                        delay:10,
 				minChars:1,
 				matchSubset:1,
 				onItemSelect:selectItem,
 				onFindValue:findValue,
 				autoFill:true,
 				maxItemsToShow:10
 			}
 		); // end autocompleteArray
             }); // end post     	 
             }); // end each
       }) // end change
       .change();

                                              
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by: elkhawajahPosted on 2009-10-18 at 13:39:45ID: 25601319

Another update, but this time I can only find the first element in the autocomplete text field, any body there? :)

             $.post("oc", {module:"AutoComplete",searchBy:index}, function(xml) {
            	 $("#searchTxt").unbind();
            	 $("#searchTxt").val(''); 
            	 var data = [];            	 
            	 $(xml).find('item').each(function(){
                	 data.push($(this).find('text').text());
            		 alert($(this).find('text').text());
                  });// end of find - each
                 // THIS PRINT COMMA SEPARATED STRING
                 // which means the array is populated correctly
                 alert(data);
                 $("#searchTxt").autocompleteArray(
 	                   [ data ],
 	                    {
 	                        delay:10,
 				minChars:1,
 				matchSubset:1,
 				onItemSelect:selectItem,
 				onFindValue:findValue,
 				autoFill:true,
 				maxItemsToShow:10
 			    }
 		 ); // end autocompleteArray
             }); // end post

                                              
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by: elkhawajahPosted on 2009-10-18 at 13:53:49ID: 25601371

errrrrrrgggggggg .. I by mistake decorated *data* with brackets [] when passing to autocompleteArray.

$.post("oc", {module:"AutoComplete",searchBy:index}, function(xml) {
            	 $("#searchTxt").unbind();
            	 $("#searchTxt").val(''); 
            	 var data = [];            	 
            	 $(xml).find('item').each(function(){
            		 alert($(this).find('text').text());
                	 data.push($(this).find('text').text());
                  });// end of find - each
                 $("#searchTxt").autocompleteArray(
 	                    data ,
 	                    {
 	                        delay:10,
 				minChars:1,
 				matchSubset:1,
 				onItemSelect:selectItem,
 				onFindValue:findValue,
 				autoFill:true,
 				maxItemsToShow:10
 			     }
 		   ); // end autocompleteArray
             }); // end post

                                              
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