Implementing Enums as Request Parameters
- Define the enum
- Controller method
- Request mapping
- Handle Invalid Values
Using Enums as Request Parameters in Spring MVC
Enums are a special data type in Java used for representing a fixed set of constants. Controller methods can take enums as parameters, Spring MVC will automatically translate the value of the incoming request parameter to the appropriate enum constant.
Example of Enum Data Type:
enum CoffeeSize {
SMALL, MEDIUM, LARGE
}
Benefits of Using Enums as Request Parameters in Spring MVC Applications
- Using enums as method parameters in controller classes provides type safety.
- Enums allow centralized validation of possible values.
- The enum name is used to match the parameter name by default.
- Enums are used for filtering/searching on predefined criteria expressed as enums.
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