How to Set a Default Error Page in web.xml?

How to Set a Default Error Page in web.xml

In web.xml, you can use the element to handle errors and redirect users to a custom error page. To set a default error page for errors that are not explicitly handled, there are two ways depending on your Servlet version:

Servlet 3.0 or Newer

If you're using Servlet 3.0 or newer, you can simply add the following element to your web.xml:

<code class="xml"><web-app ...>
    <error-page>
        <location>/general-error.html</location>
    </error-page>
</web-app></code>

Servlet 2.5

For Servlet 2.5, you need to specify each common HTTP error individually:

<code class="xml"><error-page>
    <!-- Missing login -->
    <error-code>401</error-code>
    <location>/general-error.html</location>
</error-page>
<error-page>
    <!-- Forbidden directory listing -->
    <error-code>403</error-code>
    <location>/general-error.html</location>
</error-page>
<error-page>
    <!-- Missing resource -->
    <error-code>404</error-code>
    <location>/Error404.html</location>
</error-page>
<error-page>
    <!-- Uncaught exception -->
    <error-code>500</error-code>
    <location>/general-error.html</location>
</error-page>
<error-page>
    <!-- Unsupported servlet method -->
    <error-code>503</error-code>
    <location>/general-error.html</location>
</error-page></code>

To summarize, for Servlet 3.0 or newer, you can set a default error page directly. For Servlet 2.5, you need to manually handle each common HTTP error using separate elements.

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