我有一个简单的项目(详情见下文),其中包含一个Spring bean和使用HV进行方法参数验证的验证提供程序。
问题:当验证失败时,它会抛出Hibernate异常(org.hibernate.validator.method.MethodConstraintViolationException
)。但是我希望它抛出Spring异常(org.springframework.web.bind.MethodArgumentNotValidException
),因为Spring是包装接口。据我所知,我不关心谁是验证实现者,只需要处理Spring定义的类。
问题1:上述论点是否正确,它应该抛出Spring异常吗?
问题2:如果Hibernate异常是正常情况,如何将其映射到友好的消息(在Google上找不到此信息)
ProductManager.java:
@Component
@Validated
public class ProductManager {
public void createProduct(@Valid Product product) {
}
}
Product.java:
public class Product {
private int id;
@NotNull
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Tester.java:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"/META-INF/applicationContext.xml"})
public class Tester {
@Autowired
ProductManager productManager;
@Test
public void testCreateProduct() {
Product p = new Product();
try {
productManager.createProduct(p);
} catch (Exception e) {
e.printStackTrace();
}
}
}
applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:annotation-config />
<context:component-scan base-package="com.gammay.example" />
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<qualifier value="validator"/>
</bean>
<bean class="org.springframework.validation.beanvalidation.MethodValidationPostProcessor"/>
</beans>
Tester.java中打印的异常:
注:此段翻译仅供参考,如需精准翻译请提供上下文。org.hibernate.validator.method.MethodConstraintViolationException: 出现以下约束违规: [MethodConstraintViolationImpl [method=public void com.gammay.example.core.ProductManager.createProduct(com.gammay.example.model.Product), parameterIndex=0, parameterName=arg0, kind=PARAMETER, message=名称不能为空, messageTemplate={javax.validation.constraints.NotNull.message}, rootBean=com.gammay.example.core.ProductManager@12e79d0, rootBeanClass=class com.gammay.example.core.ProductManager, leafBean=com.gammay.example.model.Product@92acdc, invalidValue=null, propertyPath=ProductManager#createProduct(arg0).name, constraintDescriptor=ConstraintDescriptorImpl{annotation=javax.validation.constraints.NotNull, payloads=[], hasComposingConstraints=true, isReportAsSingleInvalidConstraint=false, elementType=FIELD, definedOn=DEFINED_LOCALLY, groups=[interface javax.validation.groups.Default], attributes={message={javax.validation.constraints.NotNull.message}, payload=[Ljava.lang.Class;@7ce531, groups=[Ljava.lang.Class;@1ab0086}}]] at org.springframework.validation.beanvalidation.MethodValidationInterceptor.invoke(MethodValidationInterceptor.java:91) ...