| package org.eclipse.uomo.examples.units.android.web; | |
| import static org.eclipse.uomo.units.SI.CELSIUS; | |
| import static org.eclipse.uomo.units.impl.system.USCustomary.FAHRENHEIT; | |
| import java.io.IOException; | |
| import java.io.PrintWriter; | |
| import javax.servlet.ServletException; | |
| import javax.servlet.http.HttpServlet; | |
| import javax.servlet.http.HttpServletRequest; | |
| import javax.servlet.http.HttpServletResponse; | |
| import org.eclipse.uomo.units.*; | |
| import org.eclipse.uomo.units.impl.quantity.TemperatureAmount; | |
| import javax.measure.Quantity; | |
| import org.unitsofmeasurement.quantity.Temperature; | |
| import javax.measure.UnitConverter; | |
| /** | |
| * Servlet implementation class UnitConverterServlet | |
| * @param <Q> | |
| */ | |
| public class UnitConverterServlet<Q extends Quantity<Q>> extends HttpServlet { | |
| private static final long serialVersionUID = 1L; | |
| private final Quantity<Temperature> amount; | |
| private UnitConverter converter; | |
| /** | |
| * Default constructor. | |
| */ | |
| public UnitConverterServlet() { | |
| amount = new TemperatureAmount(0, CELSIUS); | |
| } | |
| /** | |
| * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse | |
| * response) | |
| */ | |
| public void doGet(HttpServletRequest in, HttpServletResponse output) | |
| throws ServletException, IOException { | |
| output.setContentType("text/html"); | |
| PrintWriter out = output.getWriter(); | |
| out.println("<html><head><title>Temperature Conversion</title></head>"); | |
| out.println("<body>"); | |
| out.println("<h1> " + FAHRENHEIT + " to " + CELSIUS + " conversion</h1>"); | |
| if (in.getParameter("t_in") != null) { | |
| String supplied_temp = in.getParameter("t_in"); | |
| double base_temp = -999; | |
| TemperatureAmount base_temp_amt = null; | |
| boolean valid = false; | |
| try { | |
| base_temp = Double.parseDouble(supplied_temp); | |
| base_temp_amt = new TemperatureAmount(base_temp, FAHRENHEIT); | |
| valid = true; | |
| } catch (NumberFormatException e) { | |
| out.println("<h4><font color=red>" | |
| + "Invalid Temperature Supplied</font></h4)<br>"); | |
| } | |
| if (valid) { | |
| out.println("<h4>Temperature " + base_temp_amt | |
| //+ " "+ FAHRENHEIT | |
| + " converts to " | |
| //+ ((((double) base_temp - 32.0d) / 9.0d) * 5.0d) | |
| //+ " " + CELSIUS | |
| + base_temp_amt.to(CELSIUS) | |
| + " </h4>"); | |
| } | |
| } | |
| out.println("<form>Enter " + FAHRENHEIT + ": "); | |
| out.println("<input name=t_in>"); | |
| out.println("<input type=submit></form><br>"); | |
| out.println("<a href=index.jsp>Return to home page of this webapp</a><br><br>"); | |
| out.println("</body></html>"); | |
| out.close(); | |
| } | |
| } |