Request ajax in jquery and response ajax in servlet

This time I will bring you the ajax request in jquery and the response ajax in servlet, the request ajax in jquery and the response ajax in servlet NotesThere are Which ones, the following are practical cases, let’s take a look.

In jsp, first, you need to import the jquery shelf package:

Get the root path of the returnable site:

<% 
  String path = request.getContextPath(); 
%>

Write ajax request in jquery:

<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 part:

<p class="tab-pane" id="B" style="text-align:center;"> 
          <p 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> 
          </p> 
        </p>

Alibaba’s fast json conversion package com.alibaba.fastjson.JSON is used in the servlet:

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));
		}

I believe I have read it You have mastered the method in the case of this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Implement jquery to load data immediately on the startup page

Use jquery to operate the text content of the input box

Realize the linkage effect between the input box and the drop-down box

How to dynamically obtain the data of the Jquery drop-down box

The above is the detailed content of Request ajax in jquery and response ajax in servlet. For more information, please follow other related articles on the PHP Chinese website!