How to call servlet from JSF ?

[Heba Fahmy]

I have a JSF bean , and I want to call a servlet and send to that servlet paramter from the bean , how can I do that ?
any help ??!!

[Abhinav Taduka]

You can call servlet from FacesContext. In order to pass parameters to servlet you can use query params. Sample code for that will be as follows.

String url = "/sampleservlet?param1=param1Value¶m2=param2Value";

FacesContext context = FacesContext.getCurrentInstance();  
try {  
       context.getExternalContext().dispatch(url);  
} catch (Exception e) {  
       e.printStackTrace();  
}  

[Heba Fahmy]

The problem that I have a navigation , so when I did this approach I got the following exception
javax.servlet.ServletException: Cannot forward after response has been committed

so how can I provide a navigation role which is important to display the user message that the user's parameters were submitted .
and in the same time I can call the servlet ??

I tried to provide that by the servlet it self , but the response format of the servlet as xml and it must be that because the system logic requires that.

any help ??

[Tim Holloway]

Please don't ask the same question twice.