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conversor_temperatura.java 4.52 KB
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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;

/**
 * Servlet implementation class conversor_temperatura
 */
@WebServlet("/conversor_temperatura")
public class conversor_temperatura extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public conversor_temperatura() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.getWriter().append("Served at: ").append(request.getContextPath());
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		PrintWriter escribir = response.getWriter();
		try {
			double fahrenheit;
			double celsius;
			double kelvin;
			double entrada = Double.parseDouble(request.getParameter("P1"));
			double selector = Double.parseDouble(request.getParameter("P0"));
			if(selector == 0) {
				//Esto es si la temperatura esta en celsius
				celsius = entrada;
				fahrenheit = (entrada * 9/5) + 32;
				kelvin = entrada + 273.15;
				escribir.append(
						"<!DOCTYPE html>\n" + 
						"<html>\n" + 
						"<head>\n" + 
						"	<meta charset=\"UTF-8\">\n" + 
						"	<title>Resultado temperaturas</title>\n" + 
						"	</head>\n" + 
						"<body>\n" + 
						"	<h1>Los resultados son</h1>\n" + 
						"	<p>Celsius: "+celsius+"</p>\n" +
						"	<p>Fahrenheit: "+fahrenheit+"</p>\n" +
						"	<p>Kelvin: "+kelvin+"</p><br><br>\n" +
						"<a href=\"http://localhost:8080/_jweb-e001/conversor.html\">Volver al conversor de temperaturas</a><br><br>	" +
						"<a href=\"http://localhost:8080/_jweb-e001/index.html\">Volver al menu principal</a><br><br>	" +
						"</body>\n" + 
						"</html>"
						);
			}else if(selector == 1) {
				//Esto es si la temperatura esta en fahrenheit
				celsius = (entrada - 32) * 5/9;
				fahrenheit = entrada;
				kelvin =((entrada - 32)*5/9) + 273.15;
				escribir.append(
						"<!DOCTYPE html>\n" + 
						"<html>\n" + 
						"<head>\n" + 
						"	<meta charset=\"UTF-8\">\n" + 
						"	<title>Resultado temperaturas</title>\n" + 
						"	</head>\n" + 
						"<body>\n" + 
						"	<h1>Los resultados son</h1>\n" + 
						"	<p>Celsius: "+celsius+"</p>\n" +
						"	<p>Fahrenheit: "+fahrenheit+"</p>\n" +
						"	<p>Kelvin: "+kelvin+"</p><br><br>\n" +
						"<a href=\"http://localhost:8080/_jweb-e001/conversor.html\">Volver al conversor de temperaturas</a><br><br>	" +
						"<a href=\"http://localhost:8080/_jweb-e001/index.html\">Volver al menu principal</a><br><br>	" +
						"</body>\n" + 
						"</html>"
						);
			}else if(selector == 2) {
				//Esto es si la temperatura esta en kelvin
				celsius = entrada - 273.15;
				fahrenheit = ((entrada - 273.15)*9/5)+32;
				kelvin =entrada;
				escribir.append(
						"<!DOCTYPE html>\n" + 
						"<html>\n" + 
						"<head>\n" + 
						"	<meta charset=\"UTF-8\">\n" + 
						"	<title>Resultado temperaturas</title>\n" + 
						"	</head>\n" + 
						"<body>\n" + 
						"	<h1>Los resultados son:</h1>\n" + 
						"	<p>Celsius: "+celsius+"</p>\n" +
						"	<p>Fahrenheit: "+fahrenheit+"</p>\n" +
						"	<p>Kelvin: "+kelvin+"</p><br><br>\n" +
						"<a href=\"http://localhost:8080/_jweb-e001/conversor.html\">Volver al conversor de temperaturas</a><br><br>	" +
						"<a href=\"http://localhost:8080/_jweb-e001/index.html\">Volver al menu principal</a><br><br>	" +
						"</body>\n" + 
						"</html>"
						);
			}
		}catch(Exception e) {
			escribir.append(
					"<!DOCTYPE html>\n" + 
							"<html>\n" + 
							"<head>\n" + 
							"	<meta charset=\"UTF-8\">\n" + 
							"	<title>Resultado temperaturas</title>\n" + 
							"	</head>\n" + 
							"<body>\n" + 
							"	<h1>Los resultados son:</h1>\n" + 
							"	<p>La entrada solo admite numeros</p>\n" +
							"<a href=\"http://localhost:8080/_jweb-e001/conversor.html\">Volver al conversor de temperaturas</a><br><br>	" +
							"<a href=\"http://localhost:8080/_jweb-e001/index.html\">Volver al menu principal</a><br><br>	" +
							"</body>\n" + 
							"</html>"
					);
		}
		
		
	}

}