Java 如何使用JaXB获取验证事件?
我尝试用Jaxb获取变量中的验证消息。 试试这里的例子 我的代码:Java 如何使用JaXB获取验证事件?,java,xml,validation,jaxb,Java,Xml,Validation,Jaxb,我尝试用Jaxb获取变量中的验证消息。 试试这里的例子 我的代码: JAXBContext jaxbContext = JAXBContext.newInstance("com.piyush"); SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); Schema schema = factory.newSchema(new StreamSource(new File("D:/
JAXBContext jaxbContext = JAXBContext.newInstance("com.piyush");
SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = factory.newSchema(new StreamSource(new File("D:/liferay-develop/workspace/cat_test/v1/STD_MP.xsd")));
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
jaxbUnmarshaller.setSchema(schema);
ValidationEventCollector validationCollector= new ValidationEventCollector();
jaxbUnmarshaller.setEventHandler( validationCollector );
STDMP ts = (STDMP)jaxbUnmarshaller.unmarshal(xml_gkuzu);
if(validationCollector.hasEvents())
{
for(ValidationEvent event:validationCollector.getEvents())
{
String msg = event.getMessage();
System.out.println(msg);
}
}
但什么也没发生。我做错了什么?以下内容应该会有所帮助: JAXB2ValidationEventCollector
package forum12295028;
import java.util.*;
import javax.xml.bind.annotation.*;
@XmlRootElement
public class Customer {
private String name;
private List<PhoneNumber> phoneNumbers =
new ArrayList<PhoneNumber>();
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@XmlElement(name="phone-number")
public List<PhoneNumber> getPhoneNumbers() {
return phoneNumbers;
}
public void setPhoneNumbers(List<PhoneNumber> phoneNumbers) {
this.phoneNumbers = phoneNumbers;
}
}
package forum12295028;
public class PhoneNumber {
}
ValidationEventCollector
来自,似乎不太支持我们在中对验证所做的更改。您可以通过创建ValidationEventHandler
的子类来解决此问题,如下所示
package forum12295028;
import javax.xml.bind.ValidationEvent;
import javax.xml.bind.util.ValidationEventCollector;
class JAXB2ValidationEventCollector extends ValidationEventCollector {
@Override
public boolean handleEvent(ValidationEvent event) {
super.handleEvent(event);
return true;
}
}
示例 下面的例子可以用来证明一切都是有效的 客户
package forum12295028;
import java.util.*;
import javax.xml.bind.annotation.*;
@XmlRootElement
public class Customer {
private String name;
private List<PhoneNumber> phoneNumbers =
new ArrayList<PhoneNumber>();
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@XmlElement(name="phone-number")
public List<PhoneNumber> getPhoneNumbers() {
return phoneNumbers;
}
public void setPhoneNumbers(List<PhoneNumber> phoneNumbers) {
this.phoneNumbers = phoneNumbers;
}
}
package forum12295028;
public class PhoneNumber {
}
customer.xsd
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="customer">
<xs:complexType>
<xs:sequence>
<xs:element name="name" type="stringMaxSize5"/>
<xs:element ref="phone-number" maxOccurs="2"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="phone-number">
<xs:complexType>
<xs:sequence/>
</xs:complexType>
</xs:element>
<xs:simpleType name="stringMaxSize5">
<xs:restriction base="xs:string">
<xs:maxLength value="5"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>
输出
cvc-maxLength-valid: Value 'Jane Doe' with length = '8' is not facet-valid with respect to maxLength '5' for type 'stringMaxSize5'.
cvc-type.3.1.3: The value 'Jane Doe' of element 'name' is not valid.
cvc-complex-type.2.4.d: Invalid content was found starting with element 'phone-number'. No child element is expected at this point.
您的链接指向不包含setSchema()的api。您应该更好地链接到此解决方案。但它看起来确实像ValidationEventCollector中的一个bug。@JérômeRadix-同意,这是一个没有从JAXB 1很好地过渡到JAXB 2的类。它也是一个不经常使用的类。这不适用于rt.jar中的
JaxBeanInfo.invokeUnmarshallCallback
。我必须将jaxb impl添加到类路径(我的bean有afterUnmarshal()
回调以进行额外的验证)。