Servlet 404 and JkMount configuration - encountered some problem (Apache/Tomcat)

Greenhorn

Posts: 25

posted 15 years ago

Number of slices to send:

Optional 'thank-you' note:

Send

Hi good people of Java Ranch! My first post here...

I'm trying to configure Apache 2.2.8, mod_jk/1.2.26 and Tomcat 5.5.25 on Linux RHEL 4 es.

Finally, trough some "non generic" methods I got everything working but I feel it isn't right, so please take a look and please let me know what is the problem.

All started after I migrated one of my addon domains from a shared hosting to dedicated. No problem with java code (everything works on my old shared server), it looks like a configuration issue.

My classes are packaged and stored in a JAR in WEB-INF/lib. Basically, I have a JSP with a form where drop down boxes get populated from DB. This part works. Than I have a submit button that invokes a servlet /Start.

As soon as I hit submit, url immediately redirects to 404 page. So, looks like it can't find a servlet, which is in the same package as other classes.

So, after playing around, I figured this is related to JkMount in httpd.conf. Basic config had this:

As soon as I added /servlet/Start to the submit action and changed web.xml url-pattern to /servlet/Start submit worked and servlet was invoked.
But I need my servlet to be invoked as /Start and url should be
www.myaddondomain.com/Satrt not www.myaddondomain.com/servlet/Start

So, I added to the httpd.conf to my <Host> and it works now. But, now I let Tomcat to handle everything, including php, html and other stuff. So, I had to add a few JkUnMount parameters in order for Apache to process them.

This is where I feel it isn't right. I'm not supposed to tell Tomcat what NOT to process. I should tell it to process only JSPs and servlets. But looks like it processes servlets only if I specify /servlet/ in form action and web.xml.

Please help me to resolve this problem. Here are related samples of my httpd.conf, server.xml and web.xml (domain names, IPs, passwords and user changed for example porpuses).

-----------------
httpd.conf
-----------------

<VirtualHost 55.555.55.55:80>
    ServerName myaddondomain.example.com
    ServerAlias <a href="http://www.myaddondomain.example.com" target="_blank" rel="nofollow">www.myaddondomain.example.com</a> <a href="http://www.myaddondomain.com" target="_blank" rel="nofollow">www.myaddondomain.com</a> myaddondomain.com
    DocumentRoot /home/myuser/public_html/myaddondomain
    ServerAdmin webmaster@myaddondomain.example.com
    UseCanonicalName off
 
JkMount /*.jsp ajp13
JkMount /* ajp13
JkMount /servlet/* ajp13
JkMount /servlets/* ajp13
JkUnMount /*.php ajp13
JkUnMount /*.pl ajp13
JkUnMount /*.cgi ajp13
JkUnMount /*.html ajp13
JkUnMount /*.htm ajp13
JkUnMount /*.gif ajp13
JkUnMount /*.jpeg ajp13
JkUnMount /*.png ajp13
JkUnMount /*.css ajp13
JkUnMount /*.js ajp13
 
    CustomLog /usr/local/apache/domlogs/myaddondomain.example.com combined
    CustomLog /usr/local/apache/domlogs/myaddondomain.example.com-bytes_log "%{%s}t %I .\n%{%s}t %O ."
    ## User myuser # Needed for Cpanel::ApacheConf
    UserDir disabled
    UserDir enabled myuser
    <IfModule concurrent_php.c>
        php4_admin_value open_basedir "/home/myuser:/usr/lib/php:/usr/php4/lib/php:/usr/local/lib/php:/usr/local/php4/lib/php:/tmp"
        php5_admin_value open_basedir "/home/myuser:/usr/lib/php:/usr/local/lib/php:/tmp"
    </IfModule>
    <IfModule !concurrent_php.c>
        <IfModule mod_php4.c>
            php_admin_value open_basedir "/home/myuser:/usr/lib/php:/usr/php4/lib/php:/usr/local/lib/php:/usr/local/php4/lib/php:/tmp"
        </IfModule>
        <IfModule mod_php5.c>
            php_admin_value open_basedir "/home/myuser:/usr/lib/php:/usr/local/lib/php:/tmp"
        </IfModule>
        <IfModule sapi_apache2.c>
            php_admin_value open_basedir "/home/myuser:/usr/lib/php:/usr/php4/lib/php:/usr/local/lib/php:/usr/local/php4/lib/php:/tmp"
        </IfModule>
    </IfModule>
    <IfModule !mod_disable_suexec.c>
        SuexecUserGroup myuser myuser
    </IfModule>
    ScriptAlias /cgi-bin/ /home/myuser/public_html/myaddondomain/cgi-bin/
    Include "/usr/local/apache/conf/userdata/*.conf"
    Include "/usr/local/apache/conf/userdata/*.owner-root"
    Include "/usr/local/apache/conf/userdata/std/*.conf"
    Include "/usr/local/apache/conf/userdata/std/*.owner-root"
    Include "/usr/local/apache/conf/userdata/std/2/*.conf"
    Include "/usr/local/apache/conf/userdata/std/2/*.owner-root"
    Include "/usr/local/apache/conf/userdata/std/2/myuser/*.conf"
</VirtualHost>

-----------------
server.xml
-----------------

<?xml version="1.0" encoding="UTF-8"?>
<Server port="8005" shutdown="SHUTDOWN">
 
  <GlobalNamingResources>
    
    <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>
 
  <Service name="Catalina">
    <Connector port="8080" />
 
    
    <Connector port="8009" protocol="AJP/1.3" />
 
    <Engine name="Catalina" defaultHost="localhost">
      <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
             resourceName="UserDatabase" />
      <Host name="localhost" appBase="webapps" />
 
<Host name="example.com" appBase="/home/myuser/public_html" unpackWARs="true" autoDeploy="true"
            xmlValidation="false" xmlNamespaceAware="false">
         <Alias>www.example.com</Alias>
         <Context path="" reloadable="true" docBase="/home/myuser/public_html" />
 
         <Context path="/manager" docBase="/usr/local/tomcat/server/webapps/manager"
                  privileged="true" antiResourceLocking="false" antiJARLocking="false" reloadable="true" />
         
</Host>

<Host name="myaddondomain.com" appBase="/home/myuser/public_html/myaddondomain" unpackWARs="true" autoDeploy="true"
            xmlValidation="false" xmlNamespaceAware="false">
         <Alias>www.myaddondomain.com</Alias>
 
        <Context path="" docBase="/home/myuser/public_html/myaddondomain" reloadable="true" crossContext="true">
                <Resource name="jdbc/myDB" auth="Container" type="javax.sql.DataSource"
                maxActive="100" maxIdle="15" maxWait="15000"
                validationQuery="select 1"
                removeAbandoned="true"
                removeAbandonedTimeout="50"
                username="myuser_app" password="mypassword"
                driverClassName="com.mysql.jdbc.Driver"
                url="jdbc:mysql://localhost:3306/myuser_db1?autoReconnect=true"/>
        </Context>
 
 
         
         
</Host>

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

-----------------
web.xml
-----------------

<?xml version="1.0" encoding="ISO-8859-1"?>
 
<!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>
<servlet>
<servlet-name>EngineServlet</servlet-name>
<servlet-class>
com.example.EngineServlet
</servlet-class>
</servlet>
 
<servlet-mapping>
<servlet-name>EngineServlet</servlet-name>
<url-pattern>/Start</url-pattern>
</servlet-mapping>
 
<description>example</description>
<resource-ref>
      <description>DB Connection</description>
      <res-ref-name>jdbc/myDB</res-ref-name>
      <res-type>javax.sql.DataSource</res-type>
      <res-auth>Container</res-auth>
  </resource-ref>
 
<welcome-file-list>
                <welcome-file>index.jsp</welcome-file>
                <welcome-file>index.html</welcome-file>
                <welcome-file>index.php</welcome-file>
        </welcome-file-list>
<error-page>
                <error-code>404</error-code>
                <location>/404.jsp</location>
        </error-page>
<error-page>
                <error-code>401</error-code>
                <location>/401.jsp</location>
        </error-page>
</web-app>

[ February 13, 2008: Message edited by: Axel Brown ]
[ February 13, 2008: Message edited by: Axel Brown ]

Screaming fools! It's nothing more than a tiny ad:

a bit of art, as a gift, the permaculture playing cards

https://gardener-gift.com