ajax语句的使用

ajax语句：

var xmlhttp;

if (window.XMLHttpRequest)

  {//code for IE7+, Firefox, Chrome, Opera, Safari

 xmlhttp=new XMLHttpRequest();

  }

else

  {//code for IE6, IE5

 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

  }

 

 

 

后台：

Map result = newHashMap();

result.put("success", true);

result.put("guid",entity.getGuid());

result.put("thumbnail",thumbnail.getGuid());

return new JSONObject(result).toString();

 

前台：

 

var result = $.parseJSON(serverData);

                                     if(result.success){

                                               $("#guid3").val(result.guid);

                                               $("#thumbnail3").val(result.thumbnail);

                                               $("#imgdiv3img").attr("src","${pageContext.request.contextPath}/file/show/"+result.thumbnail+".jpg");

                                     }

 

" type="text" />

 

后台：

public Map vote(Stringguid,HttpServletRequest request){

                   Mapmap = new HashMap();

                   InfoInterinfoInter = uaService.vote(guid,request);

                   map.put("infoInter",infoInter);

                   returnmap;

 

 

 

 

前台：

$(".tpxx_wytpbut").click(function(){

                                               varbtn = this;

                                               varguid = $(this).attr('val');    

                                               $.ajax({

                                                        type:"POST",

                                                        dataType:"json",

                                                        url:"wp/op/vote/act/vote",

                                                        data:{guid:guid},

                                                        success:function(data){

                                                                 $(btn).next().html(data.infoInter.uploadArtInfo.votes);

                                                                 alert(data.infoInter.info);

                                                        }

                                               });

                                     });