What is white label error in springboot?

As a beginner to SpringBoot, this error can be happened to anyone at least once, due to some reasons.

The Application class (eg: SpringAppApplication.java) should be at the root level, and the controller classes can be placed under the same level or maybe in a subdirectory. This application class should be denoted using @SpringBootApplication or extends from SpringBootApplication
You may miss the @RestController annotation on top of the controller class.
Can be missed the mapping annotation.( @PostMapping("/save") or @GetMapping("/id") etc.)
finally check whether you are entering the correct request mapping address(URL), because you may miss a slash or annotation. else double-check the spelling. eg:@RequestMapping("/customer")

2 Replies

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Mohamed Azarudeen Z3y ago
Accepted answer
Whitelabel error page appears when you hit a url which result into HTTP error. Whitelabel error page is generated by Spring Boot as a default mechanism when no custom error page is found.

Provide your code so that it will be easy to see what error it is and how to rectify it.
Janarthanan S3y ago
As a beginner to SpringBoot, this error can be happened to anyone at least once, due to some reasons.
1. The Application class (eg: SpringAppApplication.java) should be at the root level, and the controller classes can be placed under the same level or maybe in a subdirectory. This application class should be denoted using @SpringBootApplication or extends from SpringBootApplication
2. You may miss the @RestController annotation on top of the controller class.
3. Can be missed the mapping annotation.( @PostMapping("/save") or @GetMapping("/id") etc.)
4. finally check whether you are entering the correct request mapping address(URL), because you may miss a slash or annotation. else double-check the spelling. eg:@RequestMapping("/customer")