call from java
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July 31, 2008 at 2:52 PM
Hi Narendra,
You can use the java.net package to call a servlet from the java code.
java.net.HttpURLConnection;
java.net.URL;
Thanks
Manas
You can use the java.net package to call a servlet from the java code.
java.net.HttpURLConnection;
java.net.URL;
Thanks
Manas
July 31, 2008 at 6:36 PM
Hi friend,
package javacode;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class ServletExample extends HttpServlet {
protected void service(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/html;charset=UTF-8");
PrintWriter out = res.getWriter();
printPageStart(out);
//Obtain the session object, create a new session if doesn't exist
HttpSession session = req.getSession(true);
Integer param = (Integer) session.getAttribute("MySessionVariable");
if (param != null) {
session.setAttribute("MySessionVariable", new Integer(param.intValue() + 1));
param = (Integer) session.getAttribute("MySessionVariable");
}
else{
param = new Integer(1);
session.setAttribute("MySessionVariable", param);
}
out.println("You have displayed this page <b>" + param.intValue() + "</b> times this session.<br/><br/>");
out.println("Hit the browsers refresh button.");
printPageEnd(out);
}
private void printPageStart(PrintWriter out) {
out.println("<html>");
out.println("<head>");
out.println("<title>Store and retrive session variable</title>");
out.println("</head>");
out.println("<body>");
}
private void printPageEnd(PrintWriter out) {
out.println("</body>");
out.println("</html>");
out.close();
}
}
-------------------------------------------
package javacode;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class ServletExample extends HttpServlet {
protected void service(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
res.setContentType("text/html;charset=UTF-8");
PrintWriter out = res.getWriter();
printPageStart(out);
//Obtain the session object, create a new session if doesn't exist
HttpSession session = req.getSession(true);
Integer param = (Integer) session.getAttribute("MySessionVariable");
if (param != null) {
session.setAttribute("MySessionVariable", new Integer(param.intValue() + 1));
param = (Integer) session.getAttribute("MySessionVariable");
}
else{
param = new Integer(1);
session.setAttribute("MySessionVariable", param);
}
out.println("You have displayed this page <b>" + param.intValue() + "</b> times this session.<br/><br/>");
out.println("Hit the browsers refresh button.");
printPageEnd(out);
}
private void printPageStart(PrintWriter out) {
out.println("<html>");
out.println("<head>");
out.println("<title>Store and retrive session variable</title>");
out.println("</head>");
out.println("<body>");
}
private void printPageEnd(PrintWriter out) {
out.println("</body>");
out.println("</html>");
out.close();
}
}
-------------------------------------------
July 31, 2008 at 6:41 PM
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd";
version="2.5">
<description>
Servlet and JSP Examples.
</description>
<display-name>Servlet and JSP Examples</display-name>
<servlet>
<servlet-name>servletexample</servlet-name>
<servlet-class>javacode.ServletExample</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>servletexample</servlet-name>
<url-pattern>/jsp/ServletExample</url-pattern>
</servlet-mapping>
</web-app>
-----------------------------------------------
Read for more information.
http://www.roseindia.net/servlets/
Thanks.
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