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i am newbie in java. this is my first application developing with jsp and servlet.

when i click submit button, the result is show that http status 404.

Error is

HTTP Status 404 – Not Found

Type Status Report

Message /DemoApp/add

Description The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.

In web.xml,

 <servlet>
    <servlet-name>abc</servlet-name>
    <servlet-class>com.saunghninoo.AddServlet</servlet-class>
  </servlet>
    <servlet>
    <servlet-name>abc</servlet-name>
    <url-pattern>/add</url-pattern>
  </servlet>

Index.html

<form action="add" method="post">
                Enter 1st no: <input type="text" name="num1" class="form-control"><br>
                Enter 2nd no: <input type="text" name="num2" class="form-control"><br>
                
                <input type="submit" class="btn btn-primary">
              </form>

IN AddServlet.java,

package com.saunghninoo;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class AddServlet extends HttpServlet {
    public void service(HttpServletRequest req, HttpServletResponse res) throws IOException {
        int i = Integer.parseInt(req.getParameter("num1"));
        int j = Integer.parseInt(req.getParameter("num2"));
        
        int k= i+j;
        
        PrintWriter out = res.getWriter();
        
        out.println("result is "+ k);
    }
}

Please, Help me!!

Community
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Zin Myo Swe
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1 Answers1

1

In web.xml, Change like this

 <servlet>
    <servlet-name>abc</servlet-name>
    <servlet-class>com.saunghninoo.AddServlet</servlet-class>
  </servlet>
    <servlet-mapping>
    <servlet-name>abc</servlet-name>
    <url-pattern>/add</url-pattern>
  </servlet-mapping>
ZayarMyat
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