leofernandesmo/DNSServlet.java

## basicform.html
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html>
<html>

<head>
    <title>Formulário de Exemplo</title>
    <meta charset="UTF-8">
</head>

<body>
    <h1>Form Example</h1>
    <form method="post" action="meuform">
        <label for="caixa-texto">Name:</label>
        <input type="text" id="caixa-texto" name="caixa-texto"><br>

        <label for="lista-selecao">Lista de Seleção:</label>
        <select id="lista-selecao" name="lista-selecao">
            <option value="opcao1">Opção 1</option>
            <option value="opcao2">Opção 2</option>
            <option value="opcao3">Opção 3</option>
        </select><br>

        <p>Please select your age:</p>
        <input type="radio" id="age1" name="age" value="30">
        <label for="age1">0 - 30</label><br>
        <input type="radio" id="age2" name="age" value="60">
        <label for="age2">31 - 60</label><br>
        <input type="radio" id="age3" name="age" value="100">
        <label for="age3">61 - 100</label><br><br>

        <input type="checkbox" id="vehicle1" name="vehicle1" value="Bike">
        <label for="vehicle1"> I have a bike</label><br>
        <input type="checkbox" id="vehicle2" name="vehicle2" value="Car">
        <label for="vehicle2"> I have a car</label><br>
        <input type="checkbox" id="vehicle3" name="vehicle3" value="Boat">
        <label for="vehicle3"> I have a boat</label><br><br>

        <input type="submit" value="Enviar">
    </form>
</body>

</html>

## DNSServlet.java
package br.edu.ifal.pweb01;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

@WebServlet(name = "DNS Servlet", urlPatterns = "/dns/*")
public class DNSServlet extends HttpServlet {

    // Map to store the IP mapped by domainName
    private ConcurrentMap<String, String> ipMap;

    public void init() throws ServletException {
        ipMap = new ConcurrentHashMap<>();
    }

    public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        String domainName = req.getParameter("domainName");
        String ip = req.getParameter("ip");

        // In case of any value be null a HTTP status is returned to client.
        if (domainName == null || ip == null) {
            resp.sendError(HttpServletResponse.SC_BAD_REQUEST);
            return;
        }

        ipMap.put(domainName, ip);
        // A HTTP status is returned to client
        resp.setStatus(HttpServletResponse.SC_CREATED);
    }


}


## FormularioServlet.java
package br.edu.ifal.pweb01;

import java.io.IOException;

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

@WebServlet(name = "FormularioSerlvet", value = "/meuform")
public class FormularioServlet extends HttpServlet{
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.getRequestDispatcher("basicform.html").forward(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        for (String key : req.getParameterMap().keySet()) {
            System.out.println(key);
            System.out.println(req.getParameter(key));
        }

        resp.getWriter().println("Recebemos sua solicitação.");
    }
}

## NovoMundoEndPoint.java
package br.edu.ifal.pweb01;

import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.PathParam;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.QueryParam;
import jakarta.ws.rs.core.MediaType;

@Path("/novomundo")
public class NovoMundoEndPoint {

    @GET
    @Produces(MediaType.TEXT_PLAIN)
    @Path("/{name}")
    public String mensagem(@PathParam("name") String nome, @QueryParam("language") String lingua) {
        return "Ola " + nome + " você fala " + lingua;
    }
}

## OlaMundoServlet.java
package br.edu.ifal.pweb01;

import java.io.IOException;

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;


@WebServlet(name = "HelloWorld", value = "/helloworld")
public class OlaMundoServlet extends HttpServlet{

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().println("Você fez um GET");
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().println("Você fez um POST");
    }

    @Override
    protected void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().println("Você fez um PUT");
    }

    @Override
    protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().println("Você fez um DELETE");
    }

}
	<?xml version='1.0' encoding='UTF-8' ?>
	<!DOCTYPE html>
	<html>

	<head>
	<title>Formulário de Exemplo</title>
	<meta charset="UTF-8">
	</head>

	<body>
	<h1>Form Example</h1>
	<form method="post" action="meuform">
	<label for="caixa-texto">Name:</label>
	<input type="text" id="caixa-texto" name="caixa-texto"><br>

	<label for="lista-selecao">Lista de Seleção:</label>
	<select id="lista-selecao" name="lista-selecao">
	<option value="opcao1">Opção 1</option>
	<option value="opcao2">Opção 2</option>
	<option value="opcao3">Opção 3</option>
	</select><br>

	<p>Please select your age:</p>
	<input type="radio" id="age1" name="age" value="30">
	<label for="age1">0 - 30</label><br>
	<input type="radio" id="age2" name="age" value="60">
	<label for="age2">31 - 60</label><br>
	<input type="radio" id="age3" name="age" value="100">
	<label for="age3">61 - 100</label><br><br>

	<input type="checkbox" id="vehicle1" name="vehicle1" value="Bike">
	<label for="vehicle1"> I have a bike</label><br>
	<input type="checkbox" id="vehicle2" name="vehicle2" value="Car">
	<label for="vehicle2"> I have a car</label><br>
	<input type="checkbox" id="vehicle3" name="vehicle3" value="Boat">
	<label for="vehicle3"> I have a boat</label><br><br>

	<input type="submit" value="Enviar">
	</form>
	</body>

	</html>
	package br.edu.ifal.pweb01;

	import java.io.IOException;
	import java.io.PrintWriter;
	import java.util.Optional;
	import java.util.concurrent.ConcurrentHashMap;
	import java.util.concurrent.ConcurrentMap;

	import jakarta.servlet.ServletException;
	import jakarta.servlet.annotation.WebServlet;
	import jakarta.servlet.http.HttpServlet;
	import jakarta.servlet.http.HttpServletRequest;
	import jakarta.servlet.http.HttpServletResponse;

	@WebServlet(name = "DNS Servlet", urlPatterns = "/dns/*")
	public class DNSServlet extends HttpServlet {

	// Map to store the IP mapped by domainName
	private ConcurrentMap<String, String> ipMap;

	public void init() throws ServletException {
	ipMap = new ConcurrentHashMap<>();
	}

	public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

	String domainName = req.getParameter("domainName");
	String ip = req.getParameter("ip");

	// In case of any value be null a HTTP status is returned to client.
	if (domainName == null \|\| ip == null) {
	resp.sendError(HttpServletResponse.SC_BAD_REQUEST);
	return;
	}

	ipMap.put(domainName, ip);
	// A HTTP status is returned to client
	resp.setStatus(HttpServletResponse.SC_CREATED);
	}


	}
	package br.edu.ifal.pweb01;

	import jakarta.ws.rs.GET;
	import jakarta.ws.rs.Path;
	import jakarta.ws.rs.PathParam;
	import jakarta.ws.rs.Produces;
	import jakarta.ws.rs.QueryParam;
	import jakarta.ws.rs.core.MediaType;

	@Path("/novomundo")
	public class NovoMundoEndPoint {

	@GET
	@Produces(MediaType.TEXT_PLAIN)
	@Path("/{name}")
	public String mensagem(@PathParam("name") String nome, @QueryParam("language") String lingua) {
	return "Ola " + nome + " você fala " + lingua;
	}
	}