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javab_20230617
Commit 2acb7042 by Patryk Czarnik
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Kalkulator - tylko dodawanie

parent e7267f61
Showing with 53 additions and 0 deletions
PC23-Servlety/src/main/java/serwlety/podstawy/Kalkulator.java 0 → 100644
package serwlety.podstawy;
import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
@WebServlet("/kalkulator")
public class Kalkulator extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
final String poczatek = """
<!DOCTYPE html>
<html>
<head>
<title>Rozmowa serlwetowa</title>
</head>
<body>""";
final String formularz = """
<form>
<label for="liczba1">Pierwsza liczba:</label>
<input name="liczba1">
<br/>
<label for="liczba2">Druga liczba:</label>
<input name="liczba2">
<br/>
<button>Wyślij</button>
</form>""";
final String koniec = """
</body>
</html>""";
response.setContentType("text/html"); // MIME type / Content-Type
response.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
out.println(poczatek);
out.println(formularz);
try {
int liczba1 = Integer.parseInt(request.getParameter("liczba1"));
int liczba2 = Integer.parseInt(request.getParameter("liczba2"));
out.println("<div>Suma " + (liczba1 + liczba2) + "</div>");
} catch (NumberFormatException e) {
out.println("Niepoprawny format liczby");
}
out.println(koniec);
}
}
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