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即时尝试从jsp使用java脚本加载servlet。我也试图传递两个参数。该页面加载,但现在我打印一个系统,它假设给我的id和车辆值,但它使车辆猫头鹰空。从jsp加载servlet并尝试传递多个参数
ScanServlet的doGet被称为ID = 1个车辆= [对象HTMLParagraphElement]车辆= NULL
这是代码
<body onload="notifyOnLoad(<%=request.getParameter("imgid")%>)">
<img id="imgBarcode" src="ImageServlet?imgid=<%=request.getParameter("imgid")%>&vehicle=<%=request.getParameter("vehicle")%>" width=<%=request.getAttribute("Width")%> height=<%=request.getAttribute("Height")%>><br/>
<h4>Barcode Details</h4>
<p>Name :- <%=request.getAttribute("name")%></p>
<p>Type :- <%=request.getAttribute("type")%></p>
<p>Value :- <%=request.getAttribute("value")%></p>
<p id="wtf">type :- <%=request.getParameter("vehicle")%></p>
<script type="text/javascript">
function notifyOnLoad(imgid) {
var xmlhttp;
var vehicle =document.getElementById("wtf");
if(window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari;
xmlhttp = new XMLHttpRequest();
}
else{
/*code for IE6, IE5*/
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if(xmlhttp.readyState == 4 && xmlhttp.status == 200) {
window.location = xmlhttp.responseText;
}
}
xmlhttp.open("GET", "ScanServlet?imgid="+imgid+"vehicle="+vehicle, true);
xmlhttp.send();
}
</script
>
</body>
我想传递两个变量什么是的语法?是该语法正确 xmlhttp.open( “GET”, “ScanServlet imgid =?” + imgid + “车辆=” +车辆,TRUE); – 2014-10-30 06:55:24
更新了我的答案,检查它:) – 2014-10-30 07:01:34
我更新了问题现在我得到一个新的错误请帮助 – 2014-10-30 09:10:18