servlet Archives - Ebhor.com

Servlet Annotation WebServlet Example

September 22, 2023September 22, 2023 by manish

The first example is to show Servlet Welcome using Servlet Annotation WebServlet. For this we have created an index.html page on index.html we have created a link. On clicking on link it will call welcome servlet. Our project directory structure is as per below index.jsp

&lt;%@page contentType="text/html" pageEncoding="UTF-8"%&gt;

1	<%@page contentType="text/html" pageEncoding="UTF-8"%>

Show welcome servlet

Welcome.java

package ebhor.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(name = "Welcome", urlPatterns = {"/welcome"})
public class Welcome extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("

package ebhor.servlet;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

@WebServlet(name = "Welcome", urlPatterns = {"/welcome"})

public class Welcome extends HttpServlet {

@Override

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

try {

out.println("");

out.println("

Servlet Welcome

");
            out.println("");
            out.println("");
        } finally {
            out.close();
        }
    }

}

");

out.println("");

} finally {

out.close();

}

ServletConfig to access multiple initial parameter value

September 22, 2023September 22, 2023 by manish

ServletConfig is ued to configure the servlet. We can configure values in the ServletConfig object and can access them later on. There can one or more values can be stored. ServletConfig stores values in key values pair. ServletConfig to access initial parameter value All values are stored in key-value pairs in <servlet> the tag in … Read more

Java Servlet Response JSON in JSP using Gson

August 13, 2023August 13, 2023 by manish

In Modern web applications, We get data from the server in JSON format and display data in JSP or HTML page using Front end library or frameworks like Angular, React, etc. This is similar to mobile app development. Here we will see how we can get JSON Response from the servlet and show it in … Read more