jsp+ajax 无刷新更新页面数据?? 求助?实例?? jsp+ajax 无刷新更新页面数据?? 有没有demo? 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 是这意思不?js:<script type="text/javascript"> function change(){ var req = new XMLHttpRequest(); req.open("get","<%=request.getContextPath()%>/servlet/MyServlet",true); req.onreadystatechange = function(){ if(req.readyState == 4 && req.status == 200){ var obj = window.eval("("+req.responseText+")"); var tbl = document.getElementById("mytable"); //for(var i=0;i<=tbl.rows.length;i++){ //tbl.deleteRow(1); //} for(var i=0;i<obj.length;i++){ //var tr1 = tbl.insertRow(); //var td1 = tr1.insertCell() ;//添加一个单元格(一列) //td1.innerHTML=obj[i].id ; //标题显示内容 //var td2 = tr1.insertCell() ; //添加一个单元格(一列) //td2.innerHTML=obj[i].name ; //标题显示内容 tbl.rows[i+1].cells[0].innerHTML=obj[i].id; tbl.rows[i+1].cells[1].innerHTML=obj[i].name; } } }; req.send(null); setTimeout("change()",1000); } </script>jsp:<body onload="change()"> <table id="mytable" border=1> <tr> <th>编号</th> <th>姓名</th> </tr> <tr> <td>1</td> <td>啊啊</td> </tr> <tr> <td>2</td> <td>版本</td> </tr> <tr> <td>3</td> <td>常常</td> </tr> </table> </body>servlet:public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=utf-8"); response.setCharacterEncoding("UTF-8"); response.setHeader("Cache-Control", "no-store"); PrintWriter out = response.getWriter(); int id1 = new Random().nextInt(100); int id2 = new Random().nextInt(100); int id3 = new Random().nextInt(100); int name1 = new Random().nextInt(7); int name2 = new Random().nextInt(7); int name3 = new Random().nextInt(7); String[] names={"反对","热","饭店","前期","版本","谔谔","很好","看看"}; out.println("[{'id':"+id1+",'name':'"+names[name1]+"'},{'id':"+id2+",'name':'"+names[name2]+"'},{'id':"+id3+",'name':'"+names[name3]+"'}]"); out.flush(); out.close(); } <script type="text/javascript" src="js/jquery-1.7.js"></script> <script type="text/javascript"> function findbyid() { $.ajax( { url : "findByStockId.action", type : "post", dataType : "json", data : { "id" : $("#id").val() }, success : function(obj) { $("#name").text(obj.stock.stockName); $("#price").text(obj.stock.price); $("#closeprice").text(obj.stock.closeprice); $("#openprice").text(obj.stock.openprice); $("#maxprice").text(obj.stock.maxprice); $("#minprice").text(obj.stock.minprice); } }); }</script>研究半天,终于出来了,跟大家分享。。 查点jquery资料。如果掌握了jquery,相信的你问题也会迎刃而解 可能是缓存的问题,在你的url后面加随机数如url:"/xxx/xx.jsp?t=" + (new Date()).valueOf() 高手请进》JSP页面中 JSON 与 List 之间转换问题 WebService服务端如何限制调用数量? 跪求哪为大哥相告 我不懂,真是不懂,请各位大哥大姐教我一下. 请问哪有孙卫琴的《精通struts:基于mvc的java web设计与开发》下载啊 紧急求助!solars9需要安装mysql+tomcat+apache,求高手帮忙安装,有重谢 一个关于整型的问题 如何在局域网中实现邮件发送? jsp如何获取输入框得内容到后台进行条件查询 java右移问题 spring中DI和IOC的异同 高手谁能帮我分析一下这个tomcatGC日志
js:
<script type="text/javascript">
function change(){
var req = new XMLHttpRequest();
req.open("get","<%=request.getContextPath()%>/servlet/MyServlet",true);
req.onreadystatechange = function(){
if(req.readyState == 4 && req.status == 200){
var obj = window.eval("("+req.responseText+")");
var tbl = document.getElementById("mytable");
//for(var i=0;i<=tbl.rows.length;i++){
//tbl.deleteRow(1);
//}
for(var i=0;i<obj.length;i++){
//var tr1 = tbl.insertRow();
//var td1 = tr1.insertCell() ;//添加一个单元格(一列)
//td1.innerHTML=obj[i].id ; //标题显示内容
//var td2 = tr1.insertCell() ; //添加一个单元格(一列)
//td2.innerHTML=obj[i].name ; //标题显示内容
tbl.rows[i+1].cells[0].innerHTML=obj[i].id;
tbl.rows[i+1].cells[1].innerHTML=obj[i].name;
}
}
};
req.send(null);
setTimeout("change()",1000);
}
</script>jsp:
<body onload="change()">
<table id="mytable" border=1>
<tr>
<th>编号</th>
<th>姓名</th>
</tr>
<tr>
<td>1</td>
<td>啊啊</td>
</tr>
<tr>
<td>2</td>
<td>版本</td>
</tr>
<tr>
<td>3</td>
<td>常常</td>
</tr>
</table>
</body>servlet:
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { response.setContentType("text/html;charset=utf-8");
response.setCharacterEncoding("UTF-8");
response.setHeader("Cache-Control", "no-store");
PrintWriter out = response.getWriter();
int id1 = new Random().nextInt(100);
int id2 = new Random().nextInt(100);
int id3 = new Random().nextInt(100);
int name1 = new Random().nextInt(7);
int name2 = new Random().nextInt(7);
int name3 = new Random().nextInt(7);
String[] names={"反对","热","饭店","前期","版本","谔谔","很好","看看"};
out.println("[{'id':"+id1+",'name':'"+names[name1]+"'},{'id':"+id2+",'name':'"+names[name2]+"'},{'id':"+id3+",'name':'"+names[name3]+"'}]");
out.flush();
out.close();
}
<script type="text/javascript">
function findbyid() {
$.ajax( {
url : "findByStockId.action",
type : "post",
dataType : "json",
data : {
"id" : $("#id").val()
},
success : function(obj) {
$("#name").text(obj.stock.stockName);
$("#price").text(obj.stock.price);
$("#closeprice").text(obj.stock.closeprice);
$("#openprice").text(obj.stock.openprice);
$("#maxprice").text(obj.stock.maxprice);
$("#minprice").text(obj.stock.minprice);
}
});
}
</script>
研究半天,终于出来了,跟大家分享。。
url:"/xxx/xx.jsp?t=" + (new Date()).valueOf()