Develop Reference

Jsoup - extracting variable value

I am parsing the html from the following webpage using Jsoup. How do I get the value from the variable price_ourBase:
<script type="text/javascript">
var price_ourBase = 279;
.
.
.
</script>
JS:
Element upperContainer_inner = document.select("div.upperContainer_inner").first();
Element table = upperContainer_inner.select("table.645.0.left.0.0").first();
Element script = table.select("script").first();
Element base_ourPrice = script.select("base_ourPrice").first();
price = (?, not sure what to put here or if there is more code needed).text();

I dont think jSoup can parse javascript like that. But, you could select the contents of the script with jSoup and then you could do something like
String[] result = script.toString().split(" ");
if(result[1].equals("price_ourBase"))
System.out.println("Our price is "+result[3].split(";")[0]);

How to parse javascript in PHP page with Java?

I want to retrieve a value of a javascript section in a PHP file with my application in Java.
The PHP page contain something like :
<script type="text/javascript">
var tab= new Array();
tab[0] = "value0";
tab[1] = "value1";
tab[2] = "value2";
</script>
I'm using jsoup for parsing the HTML tag. I tried to use Rhino but I don't find example.
Context context = Context.enter();
Scriptable scope = context.initStandardObjects();
Object result = null;
Reader reader = new InputStreamReader(inputStreamOfThePage);
result = context.evaluateReader(scope, reader, "page", 1 , null );
Scriptable varValue = (Scriptable)scope.get("tab", scope);
String valueStr = (String)varValue .get("tab[0]", varValue );
It's giving me the exception :
java.lang.ClassCastException: org.mozilla.javascript.UniqueTag cannot be cast to org.mozilla.javascript.Scriptable
I don't know how to cast the object. Maybe there is a better way to do what I want.
Thanks

Jsoup is not suitable to parse Javascript... It's normal it doesn't work !

Not able to retrieve value of parameters from JSP page

Suppose
home.jsp code contain a button like
<input name="R" onclick="del(<%=rs.getString("VDB")%>)" type="radio" value="<%=rs.getString("VDB")%>" />
//note: i am passing value of VDB in del()
it is calling javascript as :
<script type="text/javascript">
function del(delno)
{
var ff = document.vendorform;
var url = "delete.jsp?+vendor="+delno;
window.navigate("delete_vendor.jsp?+vendor="+delno);
//window.location.href="delete_vendor.jsp?+vendor="+delno;
//ff.method = "POST";
//ff.action ="delete_vendor.jsp?+vendor="+delno;
//ff.submit();
}//i have used 3 methods to redirect to delete.jsp
delete.jsp :
on this page i want to retrieve value of vendor i used :
String D1=request.getParameter("vendor");
But getting null value.
Any help

var url = "delete.jsp?+vendor="+delno;
you have inserted wrong string +vendor. it should be only vendor in url.
var url = "delete.jsp?vendor="+delno;

Remove the "+" before the word vendor. Change
var url = "delete.jsp?+vendor="+delno;
To
var url = "delete.jsp?vendor="+delno;

javascript array and jsf/richfaces

I have the following code in javascript:
<script type="text/javascript"
src="#{facesContext.externalContext.requestContextPath}/js/sample-points.js"></script>
<script type="text/javascript">//<![CDATA[
var cloudmade = new CM.Tiles.CloudMade.Web({key: 'bbb'});
var map = new CM.Map('cm-example', cloudmade);
map.setCenter(new CM.LatLng(51.50874, 22.76367), 4);
var markers = [];
for (var i = 0; i < samplePoints.length; i++) {
markers.push(new CM.Marker(new CM.LatLng(samplePoints[i][0], samplePoints[i][1])));
}
var clusterer = new CM.MarkerClusterer(map, {clusterRadius: 70});
clusterer.addMarkers(markers);
//]]></script>
"samplePoints" is an array of coordinates which I can use to show markers on the map.
Map is showing here:
<div id="cm-example" style="width: 99.5%; height: 600px"></div>
How can I provide this array from jsf/richfaces without using file (e.g. I want to fetch those data from db, create array and send to this script)?
Thanks

Just let JSF print it as if it is JavaScript code.
Replace
var markers = [];
for (var i = 0; i < samplePoints.length; i++) {
markers.push(new CM.Marker(new CM.LatLng(samplePoints[i][0], samplePoints[i][1])));
}
by (assuming Facelets)
var markers = [];
<ui:repeat value="#{bean.samplePoints}" var="samplePoint">
markers.push(new CM.Marker(new CM.LatLng(#{samplePoint[0]}, #{samplePoint[1]})));
</ui:repeat>
where #{bean.samplePoints} returns a List<BigDecimal[]> or something.

See this Link
using jsFunction you can load any data structure (e.g. Points), and on your clients side you get a javaScript data structure that you can easily access it (point.x).

java equivalent of swfobject

looking for a javascript class like swfobject to embed java and have a simple fallback if the user doesn't have java or refuses the security prompt.
thanks,
Josh

You could build one pretty easily.
Have something like a div set up like this:
<div id="java-applet">
Message to user saying that they need Java here
</div>
Then add Java Plugin Detection (builder) to your JavaScript. Then if that returns true, then do something like:
document.getElementById("java-applet").innerHTML = "<applet>stuff here</applet>";

appletobject may work, but I have not used it.

Just embed the applet like you normally do and insert the fallback inside or insert a javascript snippet to remove the object: Besides param, you can add other elements, e.g. paragraphs with text or javascript calling some function to replace the object.
<script type="text/javascript">
function replace_object(x) {
$(x)...
}
</script>
<object x="y" id="some_applet">
<param name="y" value="z">
<p>java not available. some alternative here. <!-- option 1 --></p>
<script type="text/javascript">
replace_object('some_applet'); // option 2
</script>
</object>

This helps!
I got a very strange problem while using applet to do batch file downloading from the server side.
The Ajax request seems conflict with applet request, the applet file downloading interrupted with some socket exception.
The applet works fine under JRE5.0, it might be caused by our recent upgrade to JRE6.0.
<div id="java-applet"></div>
<script>
var t;
function startApplet() {
var attributes = {codebase:'<%=request.getContextPath()%>',
code:'<%=appletClass%>',
archive:'applet/SignedApplet.jar',
width:0,
height:0} ;
var parameters = {para1:'value1',
para2:'value2',
java_arguments:'-Xms64m -Xmx512m'
} ;
var version = '1.6' ;
var buildAppletTag = function() {
var tag = '<applet';
for (var attribute in attributes){
tag += (' ' + attribute + '="' + attributes[attribute] + '"');
}
tag += ">";
for (var parameter in parameters){
tag += '<param name="' + parameter + '" value="' + parameters[parameter] + '"/>';
}
tag += '</applet>';
return tag;
};
document.getElementById("java-applet").innerHTML = buildAppletTag(attributes, parameters, version);
clearTimeout(t);
}
t = setTimeout("startApplet()", 1000); // delayed
</script>