mohammad_pro
دوشنبه 01 خرداد 1391, 12:01 عصر
این کد javaScript
<script type="text/javascript">
var xmlHttp;
function ch(s1) {
alert(s1);
if (typeof XMLHttpRequest != "undefined") {
xmlHttp = new XMLHttpRequest();
} else if (window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlHttp == null) {
alert("Browser does not support XMLHTTP Request");
return;
}
var url = "${pageContext.request.contextPath}/HelloWorldController";
url += "?tpl=" + s1;
alert(url);
xmlHttp.onreadystatechange = TplChange;
xmlHttp.open("POST", url, true);
xmlHttp.send(null);
}
function TplChange() {
//alert(srt);
if (xmlHttp.readyState == 4) {
// var popu="<option value='"+str+"'>"+str+"</option>";
//document.getElementById("StartTerminationPoint").innerHTML = pop;
document.getElementById("StartTerminationPoint").innerHTML = xmlHttp.responseText;
alert(xmlHttp.responseText);
}
}
</script>
---------------------------------------------------------------------------------------
اینم کد jsp
<jsp:useBean id="Populate" class="net.roseindia.web.Populate" />
<select name="ManageElements" onchange="ch(this.value)">
<%List<String> x=Populate.getLi();
for(int i=0;i<Populate.getLi().size();i++){%>
<option value="<%=Populate.getLi().get(i)%>">
<%=Populate.getLi().get(i)%>
</option>
<%}%>
</select>
<select id="StartTerminationPoint">
</select>
---------------------------------------------------------------------------------------
اینم کد Servlet
private Populate p = new Populate();
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String tp = request.getParameter("tpl");
String buffer = "<select name='StartTerminationPoint'>";
System.out.println(p.getLi().size());
for (int i = 0; i < p.getLi().size(); i++) {
buffer = buffer + "<option value='" + tp + "'>" + tp
+ "</option>";
}
buffer += buffer + "</select>";
response.getWriter().println(buffer);
}
-------------------------------------------------------------
اینم کلاس populate
import java.util.ArrayList;
import java.util.List;
public class Populate {
private List<String> li;
public int size;
public List<String> getLi() {
int a;
li=new ArrayList<String>();
for(int i=0;i<=10;i++){
li.add(Integer.toString(i));
}
size=li.size();
return li;
}
}