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Get parameters passed to a servlet
12-14-2010, 08:54 AM
Post: #1
Get parameters passed to a servlet
<HTML>
<HEAD></HEAD>
<BODY>
<FORM METHOD=POST ACTION="/servlet/MyServlet">
value : <INPUT TYPE="TEXT" NAME="someValue">
</FORM>
</BODY>
</HTML>


import javax.servlet.*;
import javax.servlet.http.*;

public class MyServlet extends HttpServlet {
public void doPost(HttpServletRequest req, HttpServletResponse res) {
// note : if "someValue" is missing a null is returned
String valuePassed = req.getParameter("someValue");
res.setContentType("text/html");

java.io.PrintWriter out = res.getWriter();
out.println("<html><head></head><body>");
out.println("the value is : " + valuePassed);
out.println("</body></html>");
}

public void doGet(HttpServletRequest req, HttpServletResponse res) {
doPost(req, res);
}

}
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