adminPass和url都获取到了,xmlHttp.open("POST",url,true)没有走url
function loadXMLDoc() {
var adminPass = document.getElementById("adminPass").value;
alert(adminPass);
// get
var url="<%=basePath%>manage/queryPortrait.do?adminPass="+adminPass;
alert(url);
xmlHttp.open("POST",url,true);
xmlHttp.send();
}