Java hibernate验证程序异常:流已关闭
我目前正在与一个非常奇怪的问题作斗争。我主要想做的是使用Bean验证来验证一些(非JPA)对象。然而,随着对象类的生成,我目前仍在使用xml定义验证。 由于它是参考实现,我使用hibernate validator,向项目中添加了必要的maven依赖项,并组成了一个简单的xml验证映射和一个测试 当测试执行时,我得到一个异常Java hibernate验证程序异常:流已关闭,java,xml,validation,bean-validation,hibernate-validator,Java,Xml,Validation,Bean Validation,Hibernate Validator,我目前正在与一个非常奇怪的问题作斗争。我主要想做的是使用Bean验证来验证一些(非JPA)对象。然而,随着对象类的生成,我目前仍在使用xml定义验证。 由于它是参考实现,我使用hibernate validator,向项目中添加了必要的maven依赖项,并组成了一个简单的xml验证映射和一个测试 当测试执行时,我得到一个异常 javax.validation.ValidationException: HV000123: Unable to parse META-INF/validation.xm
javax.validation.ValidationException: HV000123: Unable to parse META-INF/validation.xml.
at org.hibernate.validator.internal.xml.XmlParserHelper.getSchemaVersion(XmlParserHelper.java:112)
...
Caused by: java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:156)
at java.io.BufferedInputStream.reset(BufferedInputStream.java:425)
at org.hibernate.validator.internal.xml.XmlParserHelper.getSchemaVersion(XmlParserHelper.java:109)
... 29 more
有趣的是,IOException被抛出到XmlParserHelper.getSchemaVersion(…)的finally块中。这是怎么回事?哪个可能是导致此错误的原因?下面是有关设置的更多信息
验证文件位于src/main/resources/META-INF(validation.xml和constraints.xml)中,如下所示:
validation.xml:
<validation-config xmlns="http://jboss.org/xml/ns/javax/validation/configuration"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://jboss.org/xml/ns/javax/validation/configuration">
<default-provider>org.hibernate.validator.HibernateValidator</default-provider>
<message-interpolator>org.hibernate.validator.engine.ResourceBundleMessageInterpolator</message-interpolator>
<traversable-resolver>org.hibernate.validator.engine.resolver.DefaultTraversableResolver</traversable-resolver>
<constraint-validator-factory>org.hibernate.validator.engine.ConstraintValidatorFactoryImpl</constraint-validator-factory>
<constraint-mapping>/constraints.xml</constraint-mapping>
</validation-config>
org.hibernate.validator.HibernateValidator
org.hibernate.validator.engine.ResourceBundleMessageInterpolator
org.hibernate.validator.engine.resolver.DefaultTraversableResolver
org.hibernate.validator.engine.ConstraintValidatorFactoryImpl
/constraints.xml
constraints.xml:
<constraint-mappings xmlns="http://jboss.org/xml/ns/javax/validation/mapping"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://jboss.org/xml/ns/javax/validation/mapping validation-mapping-1.1.xsd">
<default-package>com.nano</default-package>
<bean class="Person">
<field name="familyName">
<constraint annotation="javax.validation.constraints.Size">
<element name="min">4</element>
</constraint>
</field>
</bean>
</constraint-mappings>
com.nano
4.
项目中的相关maven依赖项包括:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.1.3.Final</version>
</dependency>
<dependency>
<groupId>javax.el</groupId>
<artifactId>javax.el-api</artifactId>
<version>2.2.4</version>
</dependency>
org.hibernate
休眠验证器
5.1.3.最终版本
javax.el
javax.el-api
2.2.4
发生异常的测试是一个非常基本的概念验证测试,它执行以下操作:
Person p = new Person();
p.setFamilienName("x");
Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
Set<ConstraintViolation<Person>> violations = validator.validate(p);
assertEquals(1, violations);
Person p=新人();
p、 setFamilienName(“x”);
Validator Validator=Validation.buildDefaultValidatorFactory().getValidator();
设置冲突=validator.validate(p);
资产质量(1,违规);
此错误发生在哪里(在哪台计算机上设置)?我在我们的一个项目中使用hibernate验证器时遇到了完全相同的问题。在本地计算机上,一切正常。对于阶段,我们使用IBMAIX服务器。在IBM SDK版本6的AIX服务器上,我得到了相同的异常:
Caused by: javax.validation.ValidationException: HV000123: Unable to parse META-INF/validation.xml.
at org.hibernate.validator.internal.xml.XmlParserHelper.getSchemaVersion(XmlParserHelper.java:108)
at org.hibernate.validator.internal.xml.ValidationXmlParser.parseValidationXml(ValidationXmlParser.java:76)
at org.hibernate.validator.internal.engine.ConfigurationImpl.getBootstrapConfiguration(ConfigurationImpl.java:287)
at org.hibernate.validator.internal.engine.ConfigurationImpl.parseValidationXml(ConfigurationImpl.java:361)
at org.hibernate.validator.internal.engine.ConfigurationImpl.buildValidatorFactory(ConfigurationImpl.java:214)
at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:110)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:459)
... 29 more
Caused by: java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:156)
at java.io.BufferedInputStream.reset(BufferedInputStream.java:425)
at org.hibernate.validator.internal.xml.XmlParserHelper.getSchemaVersion(XmlParserHelper.java:105)
... 35 more
查看XmlParserHelper
上的代码,会发生以下情况:
- 助手使用
为validation.xml-file创建javax.xml.stream.XmlInputFactory
javax.xml.stream.XmlEventReader
- 读取器用于获取xml文件的version属性
- 在流程的某个地方,validation.xml文件的流被关闭,这导致调用
BufferedInputStream.reset()时出现异常
com.bea.xml.stream.MXParserFactory
创建读取器。com.bea.xml.stream.reader.XmlReader()
-方法在没有其他内容可读取时关闭流:
/**
* Reads the number of characters read into the buffer, or -1 on EOF.
*/
public int read(char buf [], int off, int len) throws IOException
{
int val;
if (closed)
return -1; // throw new IOException ("closed");
val = in.read (buf, off, len);
if (val == -1)
close ();
return val;
}
看起来IBMSDK有一个类似的行为,它在读取时关闭流(在您的环境中可能也有)
解决方案:最后,我使用了另一个StAX实现(JAXP参考实现1.4-请参阅)。它还与Woodstox合作。要更改应用程序中的StAX实现,必须执行以下操作:
Person p = new Person();
p.setFamilienName("x");
Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
Set<ConstraintViolation<Person>> violations = validator.validate(p);
assertEquals(1, violations);
- 将所需的库添加到类路径
- 在应用程序中创建META-INF/services目录
- 在META-INF/services下创建文件javax.xml.stream.XMLInputFactory
- 将所选实现的完整限定类名写入此文件(例如
)com.sun.xml.internal.stream.xmlinputfactorympl
- 在
中创建XmlParserHelper
时,HiberNet验证程序使用此文件中定义的类XmlInputFactory