Validate enum in request body spring boot

Additional annotations for enum type (class level annotations) Additional annotations for model type (class level annotations). List separated by semicolon (;) or new line (Linux or Windows) boolean, toggles whether unicode identifiers are allowed in names or not, default is false. Select the complementary documentation annotation library.

Bean Validation (Hibernate Validator) 2.1 The bean validation will be enabled automatically if any JSR-303 implementation (like Hibernate Validator) is available on the classpath. By default, Spring Boot will get and download the Hibernate Validator automatically. 2.2 The below POST request will be passed, we need to implement the bean. Since, our controller method in Spring REST expects enum as an input parameter instead of a plain String, we need to come up with an idea to convert that String in the request parameter to enums before the controller method handles the request and start executing. The EnItemType is an enumeration which through the type code will be resolved to.

So, if the code that produces requestresponse doesn't use null, my guess is the code on the other side of the API won't be forced to use null too. I rather like the idea of using an empty string as an easy way to avoid using null. One argument that I heard for using null and against the empty string is that empty string means the property exists.

STEP5 Annotate the same method with ResponseStatus(HttpStatus.BADREQUEST) as it deals with only 400 BAD REQUEST exceptions. STEP6 Annotate the same method with ResponseBody to indicate that the response body to be returned for bad requests is supplied by this method.

So, if the code that produces requestresponse doesn't use null, my guess is the code on the other side of the API won't be forced to use null too. I rather like the idea of using an empty string as an easy way to avoid using null. One argument that I heard for using null and against the empty string is that empty string means the property exists. In our last example we can specify a default value for 'Accept' header. In that case we don't have to specify 'requiredfalse'. Now if the value for this header is present or not, the handler method will still be mapped. RequestHeader(value "Accept", defaultValue"applicationjson") String acceptHeader.