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Date: Sun, 31 Jan 2010 18:22:11 -0800 (PST)
From: hbral <nrolle@web.de>
To: users@tomcat.apache.org
Subject: RE: can't call my servlet on Tomcat 6 (Error 404)
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References: <27397388.post@talk.nabble.com> <4B660B51.9020508@cornell.edu> <27397698.post@talk.nabble.com> <427155181001311559y517e8161i2244797639c077ad@mail.gmail.com> <27398666.post@talk.nabble.com> <99C8B2929B39C24493377AC7A121E21F96C3EADAC9@USEA-EXCH8.na.uis.unisys.com>




n828cl wrote:
> 
>> From: hbral [mailto:nrolle@web.de]
>> Subject: Re: can't call my servlet on Tomcat 6 (Error 404)
>> 
>> yes i called it that way.
> 
> You seem reluctant to provide real data.  Show us your web.xml,
> server.xml, the webapp's <Context> element (if any), the location of the
> .war file, and the actual URL.
> 
>> it worked perfectly on my local testing environment with
>> eclipse and gwt plugin.
> 
> Note that Eclipse has a habit of using its own configurations for things,
> rather than the ones you think you've set up.
> 
>  - Chuck
> 
> 
> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
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> 

i call: /download/file
and i get the 404 error

i don't have a server.xml
or do you mean the tomcat server.xml?
here it is:





<?xml version='1.0' encoding='utf-8'?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<!-- Note:  A "Server" is not itself a "Container", so you may not
     define subcomponents such as "Valves" at this level.
     Documentation at /docs/config/server.html
 -->
<Server port="8005" shutdown="SHUTDOWN">

  <!--APR library loader. Documentation at /docs/apr.html -->
  <Listener className="org.apache.catalina.core.AprLifecycleListener"
SSLEngine="on" />
  <!--Initialize Jasper prior to webapps are loaded. Documentation at
/docs/jasper-howto.html -->
  <Listener className="org.apache.catalina.core.JasperListener" />
  <!-- Prevent memory leaks due to use of particular java/javax APIs-->
  <Listener
className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <!-- JMX Support for the Tomcat server. Documentation at
/docs/non-existent.html -->
  <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener"
/>
  <Listener
className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

  <!-- Global JNDI resources
       Documentation at /docs/jndi-resources-howto.html
  -->
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>

  <!-- A "Service" is a collection of one or more "Connectors" that share
       a single "Container" Note:  A "Service" is not itself a "Container", 
       so you may not define subcomponents such as "Valves" at this level.
       Documentation at /docs/config/service.html
   -->
  <Service name="Catalina">
  
    <!--The connectors can use a shared executor, you can define one or more
named thread pools-->
    <!--
    <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
        maxThreads="150" minSpareThreads="4"/>
    -->
    
    
    <!-- A "Connector" represents an endpoint by which requests are received
         and responses are returned. Documentation at :
         Java HTTP Connector: /docs/config/http.html (blocking &
non-blocking)
         Java AJP  Connector: /docs/config/ajp.html
         APR (HTTP/AJP) Connector: /docs/apr.html
         Define a non-SSL HTTP/1.1 Connector on port 8080
    -->
    <Connector port="8080" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" />
    <!-- A "Connector" using the shared thread pool-->
    <!--
    <Connector executor="tomcatThreadPool"
               port="8080" protocol="HTTP/1.1" 
               connectionTimeout="20000" 
               redirectPort="8443" />
    -->           
    <!-- Define a SSL HTTP/1.1 Connector on port 8443
         This connector uses the JSSE configuration, when using APR, the 
         connector should be using the OpenSSL style configuration
         described in the APR documentation -->
    <!--
    <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
               maxThreads="150" scheme="https" secure="true"
               clientAuth="false" sslProtocol="TLS" />
    -->

    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />


    <!-- An Engine represents the entry point (within Catalina) that
processes
         every request.  The Engine implementation for Tomcat stand alone
         analyzes the HTTP headers included with the request, and passes
them
         on to the appropriate Host (virtual host).
         Documentation at /docs/config/engine.html -->

    <!-- You should set jvmRoute to support load-balancing via AJP ie :
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">         
    --> 
    <Engine name="Catalina" defaultHost="localhost">

      <!--For clustering, please take a look at documentation at:
          /docs/cluster-howto.html  (simple how to)
          /docs/config/cluster.html (reference documentation) -->
      <!--
      <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
      -->        

      <!-- The request dumper valve dumps useful debugging information about
           the request and response data received and sent by Tomcat.
           Documentation at: /docs/config/valve.html -->
      <!--
      <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
      -->

      <!-- This Realm uses the UserDatabase configured in the global JNDI
           resources under the key "UserDatabase".  Any edits
           that are performed against this UserDatabase are immediately
           available for use by the Realm.  -->
      <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
             resourceName="UserDatabase"/>

      <!-- Define the default virtual host
           Note: XML Schema validation will not work with Xerces 2.2.
       -->
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true"
            xmlValidation="false" xmlNamespaceAware="false">

        <!-- SingleSignOn valve, share authentication between web
applications
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
        -->

        <!-- Access log processes all example.
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.valves.AccessLogValve"
directory="logs"  
               prefix="localhost_access_log." suffix=".txt" pattern="common"
resolveHosts="false"/>
        -->

      </Host>
    </Engine>
  </Service>
</Server>








war file: download.war

path: apache-tomcat-6.0.24\webapps\download


web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
  
  <!-- Servlets -->
  <servlet>
    <servlet-name>DLServlet</servlet-name>
    <servlet-class>com.example.server.FileServlet</servlet-class>
  </servlet>
  
  <servlet-mapping>
    <servlet-name>DLServlet</servlet-name>
    <url-pattern>/download/file</url-pattern>
  </servlet-mapping>
  
  <!-- Default page to serve -->
  <welcome-file-list>
    <welcome-file>Download.html</welcome-file>
  </welcome-file-list>

</web-app>

my servlet:

package com.example.server;

import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class FileServlet extends HttpServlet {

	private static final long serialVersionUID = -4356636877078339046L;

	byte[] bbuf = new byte[1024];

	private static final String textFileName = "files/text.txt";

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		String filename = textFileName;

		try {
			ServletOutputStream out = response.getOutputStream();
			ServletContext context = getServletConfig().getServletContext();

			File file = new File(context.getRealPath("") + "/" + filename);
			String mimetype = context.getMimeType(filename);

			response.setContentType((mimetype != null) ? mimetype
					: "application/octet-stream");
			response.setContentLength((int) file.length());
			response.setHeader("Content-Disposition",
					"attachement; filename=\"" + filename + "\"");

			DataInputStream in = new DataInputStream(new FileInputStream(file));

			int length;
			while ((in != null) && ((length = in.read(bbuf)) != -1)) {
				out.write(bbuf, 0, length);
			}

			in.close();
			out.flush();
			out.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}

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