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servlt context

Hi,

I am going through below link


http://www.javatpoint.com/ServletContextEvent


i wonder how to run this example without use of oracle database. Are there are any other examples on servelt context.



please advise
Any links resources ideas highly appreciated. Thanks in advance
0
gudii9
Asked:
gudii9
4 Solutions
 
girionisCommented:
You can run it with any database. You will have to change the database connection url and username/password

// Here you should enter the url of the database you're using
DriverManager.getConnection(  
"jdbc:oracle:thin:@localhost:1521:xe","system","oracle");

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The rest should be the same.
0
 
chaitu chaituCommented:
in servlet1

set this value in servletcontext

request.getServletContext().setAttribute("name", "john");

in servlet2 you can access this value like this..

      String name=(String )request.getServletContext().getAttribute("name");
            
            System.out.println("name in servlet........."+name);

but actual of servletcontext is you can pass the values between different contexts.
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Sathish David Kumar NArchitectCommented:
Setting values in Context
String s="Sathish"
ServletContext ctx=event.getServletContext();  
ctx.setAttribute("myname", s);  

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Retrive values in Context values anywhere in the application
ServletContext ctx=getServletContext();  
String sName=ctx.getAttribute("myname"); 

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gudii9Author Commented:
public class MyListener implements ServletContextListener{  
 
public void contextInitialized(ServletContextEvent arg0) {  


when does contextInitialized() method is called. Is it is called while setting

ctx.setAttribute("myname", s);  / ctx.setAttribute("mycon", con);  
         

Please advise
0
 
chaitu chaituCommented:
no.its not like that.contextInitialized invokes on below situation.

Yes , for each start of Tomcat , ServletContextListener's contextInitialized method invokes.

public class FirstListener implements ServletContextListener {

@Override
public void contextDestroyed(ServletContextEvent sce) {
}

public void contextInitialized(ServletContextEvent sce) {
    // Do your startup work here

    System.out.println("Started....");
    
    

}
and this is  web.xml..

 <listener>
    <listener-class>org.myapp.FirstListener</listener-class>
</listener>

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rrzCommented:
>when does contextInitialized() method is called.  
The Servlet container calls contextInitialized() when it is about to deploy the web app.
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