Java servlet

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thriyampagan
Java servlet
1 Answer(s)      8 years ago
Posted in : Java Beginners
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September 1, 2009 at 11:34 AM


Hi Friend,

Download and install the tomcat server in the C:\\ folder.Put servlet-api.jar in in the lib folder of your apche-tomcat.Then go to Start menu->Control Panel->System->Advanced tab->Environment Variables-> and set the following Environmental Variable:

1) CATALINA_HOME = C:\apache-tomcat-6.0.16;

2) Classpath=C:\apache-tomcat-6.0.16\lib\servlet-api.jar;

Then create a java file HelloWorld.java:

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class HelloWorld extends HttpServlet{
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException,IOException{
response.setContentType("text/html");
PrintWriter pw = response.getWriter();
pw.println("<html>");
pw.println("<head><title>Hello World</title></title>");
pw.println("<body>");
pw.println("<h1>Hello World</h1>");
pw.println("</body></html>");
}
}

Put this file into C:\apache-tomcat-6.0.16\webapps\examples\WEB-INF\classes\

Here examples is the application folder,you can give any name to it.

Then do the servlet mapping in web.xml which is located in the WEB-INF folder:

<servlet>
<servlet-name>Hello</servlet-name>
<servlet-class>HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Hello</servlet-name>
<url-pattern>/HelloWorld</url-pattern>
</servlet-mapping>

Execution of Servlet:

1) Compile your servlet class.

2) Start the tomcat and type the following url on the browser:

http://localhost:8080/examples/HelloWorld

For more information,visit the following links:

http://www.roseindia.net/servlets/HowToRunAServlet.shtml
http://www.roseindia.net/servlets/introductiontoconfigrationservlet.shtml
http://www.roseindia.net/servlets/HelloWorld.shtml

Thanks


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