Spring MVC Tutorials 16 - Writing your own custom property editor class Video Lecture | MVC Tutorials: Web Programming Course - Web Development

Ans. A custom property editor class in Spring MVC is a class that is responsible for converting a string value from an HTTP request into a specific object type. It is used to handle data binding between the request parameters and the model objects in Spring MVC.

Ans. You may need to write your own custom property editor class in Spring MVC when you want to handle the conversion of a specific type of data that is not handled by the default property editors provided by Spring. This allows you to have more control over the data binding process and handle custom data types or formats.

Ans. To write a custom property editor class in Spring MVC, you need to implement the PropertyEditor interface provided by Spring. This interface defines methods for converting between string values and object types. Once you have implemented the interface, you can register your custom property editor with the Spring framework.

Ans. Sure! Here's an example of a custom property editor class in Spring MVC: ```java public class CustomDateEditor extends PropertyEditorSupport { @Override public void setAsText(String text) throws IllegalArgumentException { // Convert the string value to a Date object SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); Date date; try { date = dateFormat.parse(text); } catch (ParseException e) { throw new IllegalArgumentException("Invalid date format"); } setValue(date); } @Override public String getAsText() { // Convert the Date object to a string value SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); Date date = (Date) getValue(); return dateFormat.format(date); } } ``` In this example, the CustomDateEditor class converts a string value in the format "yyyy-MM-dd" to a Date object and vice versa.

Ans. To register your custom property editor with Spring MVC, you can use the CustomEditorConfigurer bean. This bean allows you to specify which property editor should be used for a specific type of property. You can define the CustomEditorConfigurer bean in your Spring configuration file and associate it with the desired property editor class and property type.