How to specify the default error page in web.xml?
To set a default error page in a Java EE web app, use <error-page> element in web.xml file. For server errors, use <error-code> 500 and for exceptions, use <exception-type> java.lang.Throwable:
Alter "/error.jsp" to align with the path of your chosen error page.
Error Pages for specific HTTP errors
It's useful to tailor error pages for specific HTTP status codes like 401 (Unauthorized), 403 (Forbidden), and 404 (Not Found):
Exception Mapping in error pages
When it comes to handling Java exceptions, the <exception-type> element is your best friend:
Good practices for error handling
In terms of error handling, here are a few top tips:
- Always ensure your error page is readily accessible.
- Clarify errors using user-friendly language.
- Monitor and learn from errors by logging them.
- Uphold a design consistency between error pages and the rest of your website.
Enhance user experiences during errors
Meaningful error information
Personalize your error pages for optimal user assistance. Keep things simple and friendly — remember, no one likes a know-it-all!
Exception and HTTP statuses alignment
For skyrocketing user experiences, consider assigning unique pages to handle individual exception types. But remember! Only use an HTTP status error code when its description matches the situation.
Healthy habit of error logging
Don't forget to log the errors in the backend for further investigation and improvements. Log4j and SLF4J can come in handy to streamline the process!
Seamlessly blend in Error Pages
Wrath of the unforeseen
Sometimes, things go haywire — embrace it! Ensure a truly default error page for these unpredictable times:
Consistency is key
Aim for consistency. Try to maintain seamless transitions to your error pages with common navigation and aesthetic elements in place!
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