|
How to write a thread-safe servlet |
|
|
This J2EE tips demostrates an important aspect of web programming. Since requests
to your webpage may and probably will occur concurrently which means multiple
threads will be running your code simultaneously. This means you have to take care
that one thread do not interfere with processing of other threads, therefore
thread-safety is an important issue in web application. Developers should be aware
of this issue and should make sure their code works in a thread-safe way.
import javax.servlet.*;
import javax.servlet.http.*;
public class IamThreadSafeServlet extends HttpServlet
implements SingleThreadModel {
/*SingleThreadModel is an Marker Interface which we
have to implement to make a servlet thread safe*/
private ServletConfig config;
public void init (ServletConfig config)
throws ServletException {
this.config = config;
}
public void doGet (HttpServletRequest req,
HttpServletResponse res ) throws ServletException, IOException {
res.setContentType( "text/html" );
PrintWriter out = res.getWriter();
out.println( "<html>" );
out.println( "<head>" );
out.println( "<title>This is A Thread safe Servlet</title>" );
out.println( "</head>" );
out.println( "<body>" );
out.println( "<h1>A Sample Servlet</h1>" );
out.println( "</body>" );
out.println( "</html>" );
out.close();
}
}
|
Related Tips
|
Page 1 of 0 ( 0 comments )
Java EE Tips 
You can share your information about this topic using the form below!
Please do not post your questions with this form! Thanks.