我想要添加约束检查,就像这里描述的一样:如何在EclipseLink/JPA中指定@OneToMany的基数
以下是我使用的依赖项(使用 Maven):
<dependencies>
<!-- Bean Validation API and RI -->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.0.0.GA</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.0.2.GA</version>
</dependency>
</dependencies>
你可以从这个仓库获取到:
<repositories>
<repository>
<id>jboss</id>
<name>JBoss repository</name>
<url>http://repository.jboss.org/maven2</url>
</repository>
</repositories>
截至2019年的依赖关系:
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.0.16.Final</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1.0.Final</version>
</dependency>
如果您需要其他功能,如表达式语言和CDI支持,则需要添加以下内容:
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.el</artifactId>
<version>3.0.1-b09</version>
</dependency>
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator-cdi</artifactId>
<version>6.0.16.Final</version>
</dependency>
这些都在Maven Central Repo中,因此您不需要添加JBoss repo。
顺便提一下,这是我的示例便利方法:
public static <T extends Object> void validate( T object ) throws MigrationException
{
ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
Validator validator = factory.getValidator();
Set<ConstraintViolation<T>> valRes = validator.validate( object );
if( ! valRes.isEmpty() )
{
StringBuilder sb = new StringBuilder("Validation failed for: ");
if( object instanceof Origin.Wise )
sb.append( ((Origin.Wise)object).getOrigin() );
else
sb.append(object);
for( ConstraintViolation<T> fail : valRes)
{
sb.append("\n ").append( fail.getMessage() );
}
throw new IllegalArgumentException( sb.toString() );
}
}
Origin.Wise
类似于JAXB的@XmlLocation Locator
。
2013年(原帖发布时间)的版本如下:
<!-- BeanValidation and Hibernate Validator. -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.0.Final</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.el</artifactId>
<version>3.0.1-b08</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator-cdi</artifactId>
<version>5.4.0.Final</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.apache.bval</groupId>
<artifactId>bval-jsr</artifactId>
<version>2.0.2</version>
</dependency>
创建一个静态验证器
...
import javax.validation.Validation;
import javax.validation.Validator;
import org.apache.bval.jsr.ApacheValidationProvider;
...
private static final Validator validator;
static {
validator = Validation.byProvider(ApacheValidationProvider.class).configure().buildValidatorFactory()
.getValidator();
}
这就是答案!!!
再说一遍,验证器只是一个验证器,你可以轻松切换到其他验证器。
它不是很流行,但你会喜欢它。
对于Maven项目,仅需要使用此依赖项进行验证注释:
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.0.16.Final</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>