package com.roshka.webprojecttest.servlets;
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("/tabla-multiplicar-response")
public class TablaMultiplicarResponseServelet extends HttpServlet {
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
PrintWriter pw = new PrintWriter(resp.getOutputStream());
Boolean valido=true;
String parametro = req.getParameter("number");
if(parametro.length() <1)
valido=false;
for(int i = 0 ; i < parametro.length(); i++) {
if( ( !Character.isDigit(parametro.charAt(i)) && i > 0) && !(Character.isDigit(parametro.charAt(i)) && i == 0 && parametro.charAt(i) != '-' ) ) {
valido=false;
break;
}
}
if (!valido) {
pw.write(""
+ ""
+ "Error de parametro"
+ ""
+ ""
+ "No se puede generarla tabla de multiplicar. Valor del parametro \"" + parametro + "\" invalido."
+ ""
+ "");
}
else {
Integer numero = Integer.parseInt(parametro);
if(numero > 100) {
pw.write(""
+ ""
+ "Error de parametro"
+ ""
+ ""
+ "Mi programa solo conoce la tabla de multiplicar hasta el numero 100. El numero pasado fue: "+numero
+ ""
+ "");
}
else if(numero<0) {
pw.write(""
+ ""
+ "Error de parametro"
+ ""
+ ""
+ "Mi programa no sabe las tablas de multiplicar de numeros negativos"
+ ""
+ "");
}
else{
pw.write(""
+ ""
+ "Hola, bienvenidos al multiplicador"
+ ""
+ ""
+ "Soy un generador de tablas de multiplicar
"
+ ""
+ ""+ "| "+numero+" | " + "* | "+ "1 | " +"= | " + ""+(numero*1) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "2 | " +"= | " + ""+(numero*2) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "3 | " +"= | " + ""+(numero*3) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "4 | " +"= | " + ""+(numero*4) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "5 | " +"= | " + ""+(numero*5) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "6 | " +"= | " + ""+(numero*6) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "7 | " +"= | " + ""+(numero*7) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "8 | " +"= | " + ""+(numero*8) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "9 | " +"= | " + ""+(numero*9) + " | " + "
"
+ ""+ "| "+numero+" | " + "* | "+ "10 | " +"= | " + ""+(numero*10)+ " | " + "
"
+ ""
+ ""
+ "");
}
}
pw.close();
}
}