Why am I getting this 404 error from Tomcat?

Posted on 2008-06-10

1 solution

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Last Modified: 2013-11-23

I am writing a simple JSP to calculate the distance between 2 points. When I click on the "Submit" button, I get the following HTTP 404 error:

HTTP Status 404 - /distanceCalc/distanceCalculator.jsp%20method=

--------------------------------------------------------------------------------

type Status report

message /distanceCalc/distanceCalculator.jsp%20method=

description The requested resource (/distanceCalc/distanceCalculator.jsp%20method=) is not available.

--------------------------------------------------------------------------------

Apache Tomcat/6.0.16

What am I missing here? Thank you in advance!

<%@ page import="java.lang.Math.*" %>
 
<html>
<head><title>JSP Distance Calculator</title><head>
<body>
	<h1>Distance Calculator</h1>
	<%
		String x1 = request.getParameter( "x1" );
		String y1 = request.getParameter( "y1" );
		String x2 = request.getParameter( "x2" );
		String y2 = request.getParameter( "y2" );
		
		if( ( x1 != null ) && ( y1 != null ) && 
			 ( x2 != null ) && ( y2 != null ) )
		{
			try
			{				
				Double.valueOf( x1 ).doubleValue( );
				Double.valueOf( y1 ).doubleValue( );
				Double.valueOf( x2 ).doubleValue( );
				Double.valueOf( y2 ).doubleValue( );			
	%>
				<h2>Output</h2>
				
				<font size="3" face="Verdana">
				<p>X1 is <%= x1 %></p>
				<p>Y1 is <%= y1 %></p>
				<p>X2 is <%= x2 %></p>
				<p>Y2 is <%= y2 %></p>
				
				<p>The distance between (X1, Y1) and (X2, Y2) is
					<%= Math.sqrt( ( Double.parseDouble( x1 ) - Double.parseDouble( x2 ) ) *
						          ( Double.parseDouble( x1 ) - Double.parseDouble( x2 ) ) + 
						          ( Double.parseDouble( y1 ) - Double.parseDouble( y2 ) ) *
						          ( Double.parseDouble( y1 ) - Double.parseDouble( y2 ) ) ) %>
				</p>
				</font>
				
				<hr />
			<%
			}
			catch( Exception e )
			{
			%>
				<h2>Error</h2>
				
				<font size="3" face="Verdana" color="red">
				<p>Please complete all fields</p>
				</font>
				<hr />
		<%
			}
		}
		%>
		<form action="distanceCalculator.jsp method="post">
		
			<p>Please enter the value of X1:
				<input type="text" name="x1" length="7"/>
			</p>
			
			<p>Please enter the value of Y1:
				<input type="text" name="y1" length="7"/>
			</p>
			
			<p>Please enter the value of X2:
				<input type="text" name="x2" length="7"/>
			</p>
			
			<p>Please enter the value of Y2:
				<input type="text" name="y2" length="7"/>
			</p>
			
			<p>
				<input type="submit" value="Submit"/>
			</p>
		</form>
	</body>
</html>