Learn Java for Web Development

CHAPTER 5: Building Java Web Applications with Spring Web MVC 257

Annotations-Based Validation

The following section demonstrates how you can validate the user-entered data using annotations.
Figure 5-22 illustrates the modified files and newly added files in the application.

Listing 5-50 illustrates the BookValidator.

Listing 5-50. Validations in the BookValidator

1. package com.apress.bookstore.validator;


2. 
   


3. import org.springframework.validation.Errors;


4. import org.springframework.validation.ValidationUtils;


5. import org.springframework.validation.Validator;


6. 
   

Figure 5-22. Modified files and new files in the directory structure for annotations-based validation