ajax分页实现，感觉跟我想的有点差距，难道是我错了

来源：互联网发布：ubuntu启动黑屏编辑：程序博客网时间：2024/05/16 18:17

public void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
System.out.println("tttt");
PrintWriter out = response.getWriter();
request.setAttribute("abc", "aaa");
out.print("123456789");
out.close();

}

纠结之处在于，实现局部刷新，这个没问题，可是如果分页，显示list不是要out.print很多个，会不会影响性能，起码，代码量变多了。

能不能输出一个对象（arraylist对象），然后使用对象局部刷新，这样，只需request.setAttribute("name",<list>).

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
   <base href="<%=basePath%>">

   <title>My JSP 'C.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

<script type="text/javascript">
var xmlHttp;
   //创建XMLhttpRequest对象
   function createXMLHttpRequest() {
   if (window.ActiveXObject) {
   xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
   }
   else if (window.XMLHttpRequest) {
   xmlHttp = new XMLHttpRequest();
   }
   }
   //点击按钮响应的Get方法主函数
   //Get方法把参数值以名=值方式在xmlHttp.open("GET", queryString, true)中传递,queryString的形式为URL?参数名=值&参数名=值...;而xmlHttp.send(null);
   function doRequestUsingGET() {
   createXMLHttpRequest();//第一步：创建XMLHttpRequest对象
   var queryString = "C";
   alert("1");
   + "&timeStamp=" + new Date().getTime();//第二步：定义传递的参数值字符串
   xmlHttp.open("GET", queryString, true);//第三步：建立与服务器的请求
   xmlHttp.onreadystatechange = handleStateChange;//第四步：监听状态-->转到监听状态函数
   xmlHttp.send(null);//第五步：发送请求，并且立即返回
   }

   //监听状态函数
   function handleStateChange() {
   if(xmlHttp.readyState == 4) {
   if(xmlHttp.status == 200) {
   parseResults();//-->转到函数parseResults输出从服务器返的值
   }
   }
   }

   //在页面显示从服务器传来的结果
   function parseResults() {
   var responseDiv = document.getElementById("zz");
   if(responseDiv.hasChildNodes()) {
   responseDiv.removeChild(responseDiv.childNodes[0]);
   }
   var responseText = document.createTextNode(xmlHttp.responseText);//
   responseDiv.appendChild(responseText);
   }

</script>

  </head>

  <body>
  <table>
   This is my JSP page. <br>
   <button type="button" onclick="doRequestUsingGET()">asdasd</button>

   <div id="zz">11
   ${abc}11<%=request.getAttribute("abc") %>
   </div>
   </table>
  </body>
</html>