浅谈ajax在jquery中的请求和servlet中的响应

在jsp中，首先，你需要导入jquery的架包：

获取可返回站点的根路径：

<% 
  string path = request.getcontextpath(); 
%> 

在jquery中写ajax请求：

<script type="text/javascript">
     $(function(){
        $(".b").click(function(){
        $.ajax({
            type: "get",
                     //对应servlet中的方法
            url: "<%=path%>" + "/queryevaluatebyuserid.do",
                     //返回是json数据
            datatype: "json",
            async:false,
           data:{
            },
            success: function(data){
              str = "";
               if(data != null){
                               //循环表单列表
                 for (var i in data)
                  {
                     var num = parseint(i) + 1 ;                         
                    str +="<tr><td>" + num + "</td><td>" 
                    + data[i]['name'] + "</td><td>"
                    + data[i]['price'] + "元</td>" 
                    + "</tr>";
                  }
                 $(".trtd4").after(str);
               }else{
                 
               }
               
            },
            error: function(data){
            }
          }) 
      });
     }
</script>

jsp部分：

<div class="tab-pane" id="b" style="text-align:center;"> 
          <div class="row marg" > 
            <table border="2 " style="width:80%;text-align:center;"> 
              <tr class="trtd4"> 
                <th>序号</th> 
                <th>业主名</th> 
                <th>金额</th> 
              </tr>              
            </table> 
          </div> 
        </div> 

在servlet中用到了阿里巴巴的快速转换json的包com.alibaba.fastjson.json：

private void queryevaluatebyuserid(httpservletrequest request, httpservletresponse response) throws sqlexception, ioexception, servletexception{
			httpsession session=request.getsession();
			request.setcharacterencoding("utf-8");
			response.setcontenttype("text/html");
			response.setcharacterencoding("utf-8");
			cookie[] cookies = request.getcookies();
			int ownerid = 0;
			for (int i = 0; i < cookies.length; i++) {
	      cookie cookie = cookies[i];
	      if (cookie.getname().equals("ownerid")) {
	      	ownerid = integer.parseint(cookie.getvalue()); 
	      }
			}
			list<order> orderlist = new arraylist<>();
			list<evaluate> queryevaluatelist = new arraylist<>();
			orderlist = orderserviceimpl.queryorderlist(ownerid, null, null, null, null, null);
			list<map<string, string>> workers = new arraylist<map<string, string>>(); 
			for(int i = 0;i < orderlist.size();i++){
				map<string,string> order = new hashmap<string, string>();
				order.put("description", orderlist.get(i).getdescription());
				order.put("name", orderlist.get(i).getownername());
				system.out.println(orderlist.get(i).getdescription());
				order.put("type",orderlist.get(i).gettypename());
				queryevaluatelist = orderserviceimpl.queryevaluatelistbyuserid(orderlist.get(i).getid());
				order.put("comment", queryevaluatelist.get(0).getcomment());
				list<allocation> allocation = orderserviceimpl.queryallocationbyorderid(orderlist.get(i).getid());
				order.put("price", string.valueof(allocation.get(0).getprice()));
				 system.out.println(order);
				workers.add(order);
			}
            //将map键值对转换成json，传给jsp
            response.getoutputstream().write(json.tojsonbytes(workers));
		}

以上这篇浅谈ajax在jquery中的请求和servlet中的响应就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。