Servlet Unavailable (I know it's common)

Ok, so I have my project, and all of my servlets are properly mapped (I suppose), the weird thing, is that I have my login servlet available, but once I login all of the other servlets aren't found. Currently I'm using just four servlets. here's my XML file.

<servlet>
    <description>Performs a login to the system.</description>
    <servlet-name>LoginUserCheck</servlet-name>
    <servlet-class>controllers.LoginUserCheck</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet>
    <description>Updates the given order.</description>
    <display-name>OrderUpdate</display-name>
    <servlet-name>OrderUpdate</servlet-name>
    <servlet-class>controllers.OrderUpdate</servlet-class>
    <load-on-startup>2</load-on-startup>
</servlet>
<servlet>
    <description>Process the creation of an order.</description>
    <display-name>OrderCreate</display-name>
    <servlet-name>OrderCreate</servlet-name>
    <servlet-class>controllers.OrderCreate</servlet-class>
    <load-on-startup>3</load-on-startup>
</servlet>
<servlet>
    <description>Searches or Filters orders.</description>
    <display-name>OrderSearch</display-name>
开发者_开发技巧    <servlet-name>OrderSearch</servlet-name>
    <servlet-class>controllers.OrderSearch</servlet-class>
    <load-on-startup>4</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>LoginUserCheck</servlet-name>
    <url-pattern>/LoginUserCheck</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>OrderUpdate</servlet-name>
    <url-pattern>/OrderUpdate</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>OrderCreate</servlet-name>
    <url-pattern>/OrderCreate</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>OrderSearch</servlet-name>
    <url-pattern>/OrderSearch</url-pattern>
</servlet-mapping>
<session-config>
    <session-timeout>30</session-timeout>
</session-config>
<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<resource-ref>
    <description>Database Resource.</description>
    <res-ref-name>jdbc/dbre</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
    <res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>

Now, my servlets are contained in a package named "controllers", it has all four of them, my context.xml file is as follows:

<Context antiJARLocking="true" path="/RHTUBSDB" >

And the way I call the in the forms is like this action="controllername", with no backslash or anything.

As I said the weird thing is that only the LoginUserCheck controller is working, the others say: "servlet xxx is currently unavailable".

By the way, I wasn't sure of in which stackoverflow or exchange to post..sorry..

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Have you looked in the server or application's logs to see if there are errors?

Sounds like the servlets could be "currently unavailable" because the application is actually throwing HTTP 500 errors due to a problem with your code/deployment/setup.

Need to dig deeper than the friendly error messages intended for the end-user.