I have a very simple Spring Boot application that uses Spring-Data-Mongodb
All I want to do is set a JSR-303 validation rule that says the object I'm saving must have a username. I read that JSR-303 was added to spring-data-mongodb in version 1.1 so I assumed that when I save an object it's validated but this isn't the case.
Does anyone have a simple example setup that shows how this works?
My User pojo looks like
public class User {
@Id
private String id;
@NotNull(message = "User Name is compulsory")
private String userName;
private String password;
public User() {}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = PasswordAuthService.hash(password);
}
}
I saw somewhere that validation only kicks in if you have a validator created in the context so I tried updating my Application class (which contains all the configuration, to look like
@Configuration
@ComponentScan
@EnableAutoConfiguration
public class Application {
@Bean
public Validator getValidator() {
LocalValidatorFactoryBean validator = new LocalValidatorFactoryBean();
return validator;
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
First make sure that you have JSR-303 validator on classpath, for example:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.2.0.Final</version>
</dependency>
If you use Java config, the way to go is to create 2 beans:
@Bean
public ValidatingMongoEventListener validatingMongoEventListener() {
return new ValidatingMongoEventListener(validator());
}
@Bean
public LocalValidatorFactoryBean validator() {
return new LocalValidatorFactoryBean();
}
Voilà! Validation is working now.