CODEWITHSUNDEEP
javajspservlets
fwoncn
fwoncn

Reputation: 189

How to use the "application" object in a Servlet?

If we are coding a JSP file, we just need to use the embedded "application" object. But how to use it in a Servlet?

Upvotes: 5

Views: 13721

Answers (4)

Boiler Bill
Boiler Bill

Reputation: 1950

The application object in JSP is called the ServletContext object in a servlet. This is available by the inherited GenericServlet#getServletContext() method. You can call this anywhere in your servlet except of the init(ServletConfig) method.

public class YourServlet extends HttpServlet {

    @Override
    public void init() throws ServletException { 
         ServletContext ctx = getServletContext(); 
         // ...
    } 

    @Override
    public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { 
         ServletContext ctx = getServletContext(); 
         // ...
    } 

    @Override
    public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { 
         ServletContext ctx = getServletContext(); 
         // ...
    } 

}

See also Different ways to get Servlet Context.

Upvotes: 6

basZero
basZero

Reputation: 4284

In a Java web application you often have the request object. So you can get the "application" object like this:

request.getServletContext().getServerInfo()

Upvotes: 0

scheibk
scheibk

Reputation: 1370

The application object references javax.servlet.ServletContext and you should be able to reference that in your servlets.

To reference the ServletContext you will need to do the following:

// Get the ServletContext
ServletConfig config = getServletConfig();
ServletContext sc = config.getServletContext();

From then on you would use the sc object in the same way you would use the application object in your JSPs.

Upvotes: 4

John Topley
John Topley

Reputation: 115392

Try this:

ServletContext application = getServletConfig().getServletContext();

Upvotes: 3

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