Tuesday, 31 March 2020

Spring Boot - Disabling Whitelabel error page

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Mastering Error Handling in Spring Boot

Every Spring Boot developer has seen it: the famous Whitelabel Error Page. While it's helpful during the initial development phase, you definitely don't want your end-users seeing it. It looks unfinished and provides too much internal information about your app.

How to Disable the Whitelabel Error Page

There are several ways to handle this, but the most straightforward method involves a simple configuration change. This allows you to take full control over how errors are presented to your audience.

Option 1: Using application.properties

You can quickly turn off the default error page by adding a single line to your application.properties file:

server.error.whitelabel.enabled=false

Option 2: Creating a Custom Error Controller

If you want to go beyond just disabling it and actually provide a custom experience, you can implement the ErrorController interface. This gives you the power to redirect users to a custom HTML page or return a specific JSON response for APIs.

Why This Matters for Your Project

Removing the whitelabel page is one of the first steps in "production-proofing" your application. It improves security by hiding stack traces and improves user experience by providing a friendly, branded error message instead of a technical warning.

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