Hibernate JSR303验证和错误生成的propertyPath
问题内容:
我正在尝试使用Spring
MVC设置表单的JSR-303验证。我已经正确配置了所有东西(或者至少我认为是的),并且验证工作大部分都正确了。但是,如果我有一个包含要验证的对象的Collection的命令对象,并且用@Valid注释了该Collection,则Hibernate
JSR-303提供程序未提供正确的propertyPath。应该像list[0].bar
和一样填充ContraintViolation对象内部的propertyPath
list[1].bar
,但是Hibernate验证器只是提供list[].bar
和list[].bar
。当Spring的SpringValidatorAdaptor.validate()方法尝试添加字段级错误时,这会导致NumberFormatException(因为它内部希望这些括号中存在一个数字)。
使用spring-context-3.0.5和hibernate-
validator-4.1.0.Final(我也尝试了4.0.2.GA和4.2.0.Beta2并获得了相同的结果),我编写了一个小单元测试来说明问题:
package com.foo;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Set;
import javax.validation.ConstraintViolation;
import javax.validation.Valid;
import javax.validation.Validation;
import javax.validation.Validator;
import org.hibernate.validator.constraints.NotEmpty;
import org.junit.Test;
import org.springframework.util.AutoPopulatingList;
public class ValidatorTest {
class Person {
@NotEmpty
private String name;
@NotEmpty
@Valid
private Collection<Foo> list = new AutoPopulatingList<Foo>(Foo.class);
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public Collection<Foo> getList() {
return list;
}
public void setList(Collection<Foo> foos) {
this.list = foos;
}
}
class Foo {
@NotEmpty
private String bar;
public void setBar(String bar) {
this.bar = bar;
}
public String getBar() {
return bar;
}
}
@Test
public void testValidator() throws Exception {
Foo foo0 = new Foo();
foo0.setBar("");
Foo foo1 = new Foo();
foo1.setBar("");
Collection<Foo> list = new ArrayList<ValidatorTest.Foo>();
list.add(foo0);
list.add(foo1);
Person person = new Person();
person.setName("Test Person");
person.setList(list);
Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
Set<ConstraintViolation<Person>> violations = validator.validate(person);
for (ConstraintViolation<Person> constraintViolation : violations) {
System.out.println(constraintViolation);
}
}
}
上面的测试产生以下输出:
ConstraintViolationImpl{interpolatedMessage='may not be empty', propertyPath=list[].bar, rootBeanClass=class com.foo.ValidatorTest$Person, messageTemplate='{org.hibernate.validator.constraints.NotEmpty.message}'}
ConstraintViolationImpl{interpolatedMessage='may not be empty', propertyPath=list[].bar, rootBeanClass=class com.foo.ValidatorTest$Person, messageTemplate='{org.hibernate.validator.constraints.NotEmpty.message}'}
它产生的错误是正确的。但是,propertyPath不是(至少据我了解)。
现在,如果我用Apache的Horgnate的JSR-303实现替换了Apache的(org.apache.bval.bundle-0.2-incubating-
使用此处提到的依赖项),那么我将获得期望的输出。这是完全相同的测试,但是使用Apache的JSR-303注释而不是Hibernate的注释。请注意,现在存在于propertyPath字段中的索引:
ConstraintViolationImpl{rootBean=com.foo.ValidatorTest$Person@5f989f84, propertyPath='list[0].bar', message='may not be empty', leafBean=com.foo.ValidatorTest$Foo@4393722c, value=}
ConstraintViolationImpl{rootBean=com.foo.ValidatorTest$Person@5f989f84, propertyPath='list[1].bar', message='may not be empty', leafBean=com.foo.ValidatorTest$Foo@528acf6e, value=}
由于各种原因,我可能会坚持使用Hibernate的JSR-303实现。我正在做的某件事导致Hibernate验证程序不填充这些索引吗?我试图尽可能避免在Spring控制器中进行手动错误处理。
感谢您提供的任何帮助!
问题答案:
我也在Hibernate论坛上问了这个问题,并在那里得到了回答。如果有人遇到此问题,我想在这里分享答案。
只需将Collection更改为List即可解决此问题。这是更新的单元测试:
package com.foo;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import javax.validation.ConstraintViolation;
import javax.validation.Valid;
import javax.validation.Validation;
import javax.validation.Validator;
import org.hibernate.validator.constraints.NotEmpty;
import org.junit.Test;
import org.springframework.util.AutoPopulatingList;
public class ValidatorTest {
class Person {
@NotEmpty
private String name;
@NotEmpty
@Valid
private List<Foo> list = new AutoPopulatingList<Foo>(Foo.class);
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
public List<Foo> getList() {
return list;
}
public void setList(List<Foo> foos) {
this.list = foos;
}
}
class Foo {
@NotEmpty
private String bar;
public void setBar(String bar) {
this.bar = bar;
}
public String getBar() {
return bar;
}
}
@Test
public void testValidator() throws Exception {
Foo foo0 = new Foo();
foo0.setBar("");
Foo foo1 = new Foo();
foo1.setBar("");
List<Foo> list = new ArrayList<ValidatorTest.Foo>();
list.add(foo0);
list.add(foo1);
Person person = new Person();
person.setName("Test Person");
person.setList(list);
Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
Set<ConstraintViolation<Person>> violations = validator.validate(person);
for (ConstraintViolation<Person> constraintViolation : violations) {
System.out.println(constraintViolation);
}
}
}
以上测试的输出(现在包括索引):
ConstraintViolationImpl{interpolatedMessage='may not be empty', propertyPath=list[1].bar, rootBeanClass=class com.foo.ValidatorTest$Person, messageTemplate='{org.hibernate.validator.constraints.NotEmpty.message}'}
ConstraintViolationImpl{interpolatedMessage='may not be empty', propertyPath=list[0].bar, rootBeanClass=class com.foo.ValidatorTest$Person, messageTemplate='{org.hibernate.validator.constraints.NotEmpty.message}'}