Hibernate Validator Example

Reference - http://wheelersoftware.com/articles/hibernate-validator.html

POM.xml
    <dependency>
          <groupId>org.hibernate</groupId>
          <artifactId>hibernate-validator</artifactId>
          <version>3.1.0.GA</version>
      </dependency>
      <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-simple</artifactId>
          <version>1.4.2</version>
      </dependency>

Application Contenxt

<bean name="validator"
    class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
    <property name="validationMessageSource">
        <ref bean="resourceBundleLocator"/>
    </property>
</bean>

<bean name="resourceBundleLocator" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
    <property name="basenames">
        <list>
            <value>META-INF/validation_errors</value>
        </list>
    </property>
</bean>

Person Modal Class
class Person {
    private String firstName;
    private String lastName;

    @NotNull
    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
}


public class BeanValidationTest {

    private static ApplicationContext applicationContext;

    @BeforeClass
    public static void initialize() {
        applicationContext = new ClassPathXmlApplicationContext("classpath:META-INF/spring/webmvc-beans.xml");
        Assert.assertNotNull(applicationContext);
    }

    @Test
    public void test() {
        LocalValidatorFactoryBean factory = applicationContext.getBean("validator", LocalValidatorFactoryBean.class);
        Validator validator = factory.getValidator();
        Person person = new Person();
        person.setLastName("dude");
        Set<ConstraintViolation<Person>> violations = validator.validate(person);
        for(ConstraintViolation<Person> violation : violations) {
            System.out.println("Custom Message:- " + violation.getMessage());
        }
    }

}

Address Modal Class
package com.wheelersoftware.demos.hibernatevalidator;
import org.hibernate.validator.Length;
import org.hibernate.validator.NotEmpty;
import org.hibernate.validator.Pattern;

public class Address {
    private String street1;
    private String street2;
    private String city;
    private String state;
    private String zip;

    @NotEmpty
    @Length(max = 40)
    public String getStreet1() { return street1; }

    public void setStreet1(String street1) {
        this.street1 = street1;
    }

    // No validation constraints
    public String getStreet2() { return street2; }

    public void setStreet2(String street2) {
        this.street2 = street2;
    }

    @NotEmpty
    @Length(max = 40)
    public String getCity() { return city; }

    public void setCity(String city) {
        this.city = city;
    }

    @NotEmpty
    @Length(max = 3)
    public String getState() { return state; }

    public void setState(String state) {
        this.state = state;
    }

    @NotEmpty
    @Length(min = 5, max = 5, message = "{zip.length}")
    @Pattern(regex = "[0-9]+")
    public String getZip() { return zip; }

    public void setZip(String zip) {
        this.zip = zip;
    }
}

Address Validator Class
package com.wheelersoftware.demos.hibernatevalidator;

import org.hibernate.validator.Length;
import org.hibernate.validator.NotEmpty;
import org.hibernate.validator.Pattern;

public class Address {
    private String street1;
    private String street2;
    private String city;
    private String state;
    private String zip;

    @NotEmpty
    @Length(max = 40)
    public String getStreet1() { return street1; }

    public void setStreet1(String street1) {
        this.street1 = street1;
    }

    // No validation constraints
    public String getStreet2() { return street2; }

    public void setStreet2(String street2) {
        this.street2 = street2;
    }

    @NotEmpty
    @Length(max = 40)
    public String getCity() { return city; }

    public void setCity(String city) {
        this.city = city;
    }

    @NotEmpty
    @Length(max = 3)
    public String getState() { return state; }

    public void setState(String state) {
        this.state = state;
    }

    @NotEmpty
    @Length(min = 5, max = 5, message = "{zip.length}")
    @Pattern(regex = "[0-9]+")
    public String getZip() { return zip; }

    public void setZip(String zip) {
        this.zip = zip;
    }
}

 -  Ramesh Badam