Spring MVC Data Validation
In Spring MVC, data validation is an essential feature to ensure that user input or submitted data adheres to predefined rules. Spring MVC integrates seamlessly with the Java Bean Validation (JSR 303 and JSR 349) API, providing a straightforward way to validate model data.
1. Add Dependencies
Add the Spring Boot Validation dependency in your pom.xml
file if you are using Maven:
1 | <dependency> |
2. Create the Model Class
Define fields in your model class (e.g., a form-backing object) and annotate them with appropriate Bean Validation annotations.
1 | import javax.validation.constraints.*; |
3. Validation in the Controller
Use the @Valid
annotation to trigger validation logic and the BindingResult
object to check validation results in your Spring MVC controller.
1 | import org.springframework.stereotype.Controller; |
4. Frontend Form
Create a simple HTML form to submit customer information.
1 |
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Summary
- Add Dependencies: Ensure the project includes the Spring Boot Validation dependency.
- Define Model Class: Use Bean Validation annotations to define validation rules in the model class.
- Controller Validation: Use the
@Valid
annotation andBindingResult
object to perform and check validation in the controller. - Frontend Form: Create an HTML form to submit data and display validation error messages.
By following these steps, you can implement data validation in Spring MVC to ensure that input data meets predefined rules and constraints.