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  • Book Overview & Buying Spring MVC Beginner's Guide
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Spring MVC Beginner's Guide

Spring MVC Beginner's Guide

By : Ganeshan
4.3 (30)
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Spring MVC Beginner's Guide

Spring MVC Beginner's Guide

4.3 (30)
By: Ganeshan

Overview of this book

A step-by-step pragmatic approach to web application development using Spring MVC, with relevant screenshots and concise explanations. This book is aimed at helping Java developers who want to teach themselves Spring MVC, even if they have no previous experience with Spring MVC. It would be helpful to have a bit of familiarity with basic servlet programming concepts, but no prior experience is required.
Table of Contents (14 chapters)
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13
Index

Time for action – adding custom validation support


In this section, you will learn how to create custom validation annotations and use them. Add a custom product ID validation to your add product page to validate duplicate product IDs by performing the following steps:

  1. Create an annotation interface called ProductId (ProductId.java) under the package com.packt.webstore.validator in the source folder src/main/java. Then, add the following code snippet in it:

    package com.packt.webstore.validator;
    
    import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
    import static java.lang.annotation.ElementType.FIELD;
    import static java.lang.annotation.ElementType.METHOD;
    import static java.lang.annotation.RetentionPolicy.RUNTIME;
    import java.lang.annotation.Documented;
    import java.lang.annotation.Retention;
    import java.lang.annotation.Target;
    import javax.validation.Constraint;
    import javax.validation.Payload;
    
    @Target( { METHOD, FIELD, ANNOTATION_TYPE })
    @Retention(RUNTIME)
    @Constraint(validatedBy...

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