Create a servlet in VScode maven project

Question

I have created a maven-archetype-webapp in VScode and created a folder Servlets in src/main/. This folder Servlets contain servlets. And I have also added tomcat server but when I am trying to run this server error - [Tomcat 9.0]: 'C:\Program' is not recognized as an internal or external command, operable program or batch file is keep coming on console.

Also when I try to run the project with tomcat server it is showing - this folder is not a valid webapp

[![It is the tree structure of my project][1]][1] [1]: https://i.stack.imgur.com/YPV3K.png

Code of FirstServlet.java -

import javax.servlet.http.HttpServlet;

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

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

public class FirstServlet extends HttpServlet{
    public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException  {
        
        System.out.println("this is get method....");
        res.setContentType("text/html");
        PrintWriter out = res.getWriter();
        out.println("<h1> this is get method of servlet</h2>");
        
        
    }

}

This is my web.xml file -

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
  <display-name>Archetype Created Web Application</display-name>

  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>


  <servlet>
    <servlet-name>first</servlet-name>
    <servlet-class>FirstServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>first</servlet-name>
    <url-pattern>/first</url-pattern>
  </servlet-mapping>

</web-app>

In this file, web-app tag is showing a red line with error message - The web-app element is the root of the deployment descriptor for a web application.

Source: web-app_2_3.dtd

The content of element type "web-app" must match "(icon?,display-name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,taglib*,resource-env-ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-ref*)".xml(MSG_CONTENT_INVALID)

About your first question, [Tomcat 9.0]: 'C:\Program' is not recognized as an internal or external command, operable program or batch file, please have a look at this reply: Can't run Tomcat Server on VS code. after the first question is solved, pack the project as war and run it on Tomcat server again to see if the problem goes away. — Molly Wang-MSFT

Molly Wang-MSFT Molly Wang-MSFT · Accepted Answer · 2021-02-26T01:38:54

1

votes

Java: Create Java Project ---> Maven ---> maven-archetype-webapp:

Create a servlet in VScode maven project

1 Answers