Currently working on a small project involving JSP servlets. I need a practical example demonstrating the implementation of both the doGet() and doPost() methods within the same servlet, while handling AJAX calls within a JSP form.
Additionally, could you clarify why it is generally advised against using both doGet() and doPost() within a single servlet? If this approach is not recommended, how can the same functionality be achieved using two separate servlets that still interact on the same JSP page?
Any assistance on this matter would be greatly appreciated. Thank you in advance.
Snippet of my JSP code:
<form action="/mamababu.do" method="POST">
<select name="command_no">
<c:forEach var="items" items="${scriptItems}">
<option value="${items.command}" name="command">${items.command}</option>
</c:forEach>
</select>
<input type="submit" value="submit"></input>
</form>
Snippet of my Servlet class:
package com.project.mamabhagne;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.gson.Gson;
@WebServlet("/mamababu.do")
public class mamababu extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// Code to retrieve data from the database (model class) and forward it to the JSP page
// RequestDispatcher used to redirect to 'scriptviewer.jsp'
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// Handling POST requests
}
}
Encountering HTTP Status 404 error when trying to post form data:
HTTP Status 404 - /mamababu.do
Type: Status report
Message: /mamababu.do
Description: The requested resource is not available.
Apache Tomcat/8.0.52