[英]Why the ajax didn't partly refresh my page?
我正在將ajax與javascript一起使用以執行取消或運送操作。 當我單擊“取消”鏈接時,此頁面沒有任何更改,我需要刷新整個頁面以查看更改的狀態。 單擊發運鏈接,即使刷新整個頁面也沒有任何反應。 我的jsp和控制器代碼如下所示:
JSP:
<script>
var xmlHttp;
xmlHttp = GetXmlHttpObject();
function GetXmlHttpObject()
{
var xmlHttp = null;
try
{
// Firefox, Opera 8.0+, Safari
xmlHttp = new XMLHttpRequest();
} catch (e)
{
// Internet Explorer
try
{
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e)
{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
}
return xmlHttp;
}
function cancelOrder(orderId, rowID){
if (xmlHttp == null)
{
alert("Your browser does not support AJAX!");
return;
}
var query = "action=cancel&order=" + orderId;
/* alert(orderId); */
xmlHttp.onreadystatechange = function stateChanged()
{
if (xmlHttp.readyState == 4)
{
var status = document.getElementById(rowID);
alert(status.innerHTML);
status.innerHTML = "Canceled";
}
};
xmlHttp.open("GET", "manageUserAccount.htm?"+query, true);
/* xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); */
xmlHttp.send(null);
return false;
/* var row = document.getElementById(rowID);
row.parentNode.removeChild(row); */
}
function shipOrder(orderId, rowID){
if (xmlHttp == null)
{
alert("Your browser does not support AJAX!");
return;
}
var query = "action=ship&order=" + orderId;
/* alert(orderId); */
xmlHttp.onreadystatechange = function stateChanged()
{
if (xmlHttp.readyState == 4 && xmlhttp.status==200)
{
var status = document.getElementById(rowID);
alert(status.innerHTML);
status.innerHTML = "Canceled";
}
};
xmlHttp.open("GET", "manageUserAccount.htm?"+query, true);
/* xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); */
xmlHttp.send(null);
return false;
/* var row = document.getElementById(rowID);
row.parentNode.removeChild(row); */
}
</script>
<c:forEach var="order" items="${user.orders}" varStatus="vs">
<tr>
<td>${order.id}</td>
<td>${order.createDate}</td>
<td>${order.status}</td>
<td><a href="manageUserAccount.htm?action=viewDetails&orderId=${order.id}">View Details</a></td>
<td><a onclick = "shipOrder(${order.id}, ${vs.index})">Ship the order</a><br><a onclick = "cancelOrder(${order.id}, ${vs.index})">Cancel the order</a></td>
</tr>
</c:forEach>
控制器:
if(action.equals("cancel")){
OrderDAO orderDao = new OrderDAO();
System.out.println(request.getParameter("order"));
Long orderId = Long.parseLong(request.getParameter("order"));
Order order = orderDao.get(orderId);
order.setStatus("Canceled");
orderDao.save(order);
JSONObject obj = new JSONObject();
obj.put("cancel", "Canceled");
}
if(action.equals("ship")){
OrderDAO orderDao = new OrderDAO();
System.out.println(request.getParameter("ship"));
Long orderId = Long.parseLong(request.getParameter("ship"));
Order order = orderDao.get(orderId);
order.setStatus("Shipped");
orderDao.save(order);
JSONObject obj = new JSONObject();
obj.put("ship", "Shipped");
}
誰能幫我解決這個問題? 謝謝!!
嗯,要檢查響應,我經常使用:
if (xmlhttp.readyState==4 && xmlhttp.status==200)
也許您的回應沒有獲得正確的狀態?
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