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As response to an Ajax-request I want to return Javascript that is executed on the client immediately. I tried it like this but it doesn't work:
<html xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:head></h:head>
<h:body>
<h:form>
<h:commandButton value="js">
<f:ajax event="click" listener="#{myBean.js}"/>
</h:commandButton>
</h:form>
</h:body>
</html>
the bean:
package mypackage;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.context.PartialResponseWriter;
import javax.inject.Named;
@Named
public class MyBean {
public void js() {
System.out.println("called");
FacesContext ctx = FacesContext.getCurrentInstance();
ExternalContext extContext = ctx.getExternalContext();
if (ctx.getPartialViewContext().isAjaxRequest()) {
try {
extContext.setResponseContentType("text/xml");
extContext.addResponseHeader("Cache - Control ", "no - cache");
PartialResponseWriter writer = ctx.getPartialViewContext()
.getPartialResponseWriter();
writer.startDocument();
writer.startEval();
writer.write("alert(’Works!’);");
writer.endEval();
writer.endDocument();
writer.flush();
ctx.responseComplete();
} catch (Exception e) {
System.out.println(e);
}
}
}
}
475
writer.write("alert(’Works!’);");
Curly quotes are not a valid string delimiter in JS. Use straight quotes.
writer.write("alert('Works!');");
Unrelated to the concrete problem, based on your question history you're using PrimeFaces, or at least familiar with it. In that case, just use RequestContext#execute() instead of this mess.
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