Tag: jsr303

spring boot August 17, 2023 by mkyong 4 comments

package javax.validation.constraints does not exist

Below is a Spring Boot application and validation bean API example. GlobalProperties.java import javax.validation.constraints.Max; import javax.validation.constraints.Min; import javax.validation.constraints.NotEmpty; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; import org.springframework.validation.annotation.Validated; @Component @ConfigurationProperties @Validated public class GlobalProperties { //@Value("${thread-pool}") @Max(5) @Min(0) private int threadPool; Run the Spring Boot application and hits the following error: Terminal package javax.validation.constraints does not exist Solution – […]

spring boot February 20, 2019 by mkyong 18 comments

Spring REST Validation Example

In this article, we will enhance the previous Spring REST Hello World example, by adding bean validation and custom validator. Technologies used : Spring Boot 2.1.2.RELEASE Spring 5.1.4.RELEASE Maven 3 Java 8 1. Controller Review the previous REST Controller again : BookController.java package com.mkyong; import com.mkyong.error.BookNotFoundException; import com.mkyong.error.BookUnSupportedFieldPatchException; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.util.StringUtils; import org.springframework.web.bind.annotation.*; import […]

spring mvc February 5, 2017 by mkyong 4 comments

Spring REST API Validation

In Spring MVC, just annotate a @Valid on the @RequestBody to fire the validation process. Note For complete source code, please refer to this – Spring Boot Ajax example P.S Tested with Spring Boot 1.5.1.RELEASE (Spring 4.3.6.RELEASE) 1. JSR 303 Validation Add JSR303 annotations on a bean. package com.mkyong.model; import org.hibernate.validator.constraints.NotBlank; public class SearchCriteria { […]

spring boot January 5, 2017 by mkyong 4 comments

Spring Boot @ConfigurationProperties example

Spring Boot @ConfigurationProperties lets developers map or bind the entire external configuration values in .properties or .yml files to Java objects. Table of contents: 1. Access a single value using @Value 2. @ConfigurationProperties 3. Add JSR303 Validation 3.1 Add JSR 303 dependencies 3.2 @ConfigurationProperties and @Validated 4. Testing @ConfigurationProperties 5. Download Source Code 6. References […]

spring mvc August 10, 2010 by mkyong 0 comments

Spring MVC form handling example

This tutorial shows you how to do form handling in Spring Web MVC application. Technologies and tools used: Java 11 Spring 5.2.22.RELEASE JSP JSTL 1.2 Embedded Jetty Server 9.4.45.v20220203 Servlet API 4.0.4 Bootstrap 5.2.0 (webjars) Hibernate Validator 6.2.5.Final HSQLDB 2.7.0 IntelliJ IDEA Maven 3.8.6 Spring Test 5.2.22.RELEASE Hamcrest 2.2 JUnit 5.9 Table of contents: 1. […]