Hi, here is an example.
<myClass>
<vehiclelist>
<vehicle/>
<vehicle/>
</vehiclelist>
</myClass>
You should define a Vehicle class and a mapping-file for it, and you should
include this mapping-file in the main mapping-file
<include href=”VehicleMap.xml”/>
<class name="your.package.MyClass" auto-complete="true">
<map-to xml="myClass"/>
<field name="vehicles" type="your.package.Vehicle" collection="arraylist">
<bind-xml name="vehicle” node="element" location="vehiclelist"/>
</field>
</class>
发件人: Jose Antonio [mailto:[email protected]]
发送时间: 2011年4月19日 15:33
收件人: [email protected]
主题: [castor-user] Exception while mapping a java.util.List attribute
Hello, I've got a problem mapping a class whose one of its attributes is a
java.util.List. I'm getting the following exception:
Caused by: org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'xmlContext' defined in class path resource
[applicationContext.xml]: Invocation of init method failed; nested exception is
java.lang.IllegalArgumentException: list is not a valid
FieldMappingCollectionType
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1338)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at
org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:269)
... 154 more
Caused by: java.lang.IllegalArgumentException: list is not a valid
FieldMappingCollectionType
at
org.exolab.castor.mapping.xml.types.FieldMappingCollectionType.valueOf(FieldMappingCollectionType.java:249)
at
org.exolab.castor.xml.XMLMappingLoader.createFieldDesc(XMLMappingLoader.java:625)
at
org.exolab.castor.mapping.loader.AbstractMappingLoader.createFieldDescriptors(AbstractMappingLoader.java:408)
at
org.exolab.castor.xml.XMLMappingLoader.createClassDescriptor(XMLMappingLoader.java:231)
at
org.exolab.castor.mapping.loader.AbstractMappingLoader.createClassDescriptors(AbstractMappingLoader.java:255)
at
org.exolab.castor.xml.XMLMappingLoader.loadMapping(XMLMappingLoader.java:152)
at
org.castor.mapping.MappingUnmarshaller.getMappingLoader(MappingUnmarshaller.java:164)
at
org.castor.mapping.MappingUnmarshaller.getMappingLoader(MappingUnmarshaller.java:130)
at org.exolab.castor.xml.XMLContext.addMapping(XMLContext.java:82)
at
org.castor.spring.xml.XMLContextFactoryBean.afterPropertiesSet(XMLContextFactoryBean.java:121)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
... 164 more
What I am trying to do is:
I want the java.util.List attribute to be mapped with a diferent name in the
xml file. For example, if the attribute is:
private List<Vehicle> vehicles;
I want this attribute to be mapped with the name "myVehicles" in the xml file.
What I have done in the mapping file is:
<class name="MyClass" auto-complete="true">
<map-to xml="myClass"/>
<field name="vehicles"><bind-xml name="myVehicles"/></field>
</class>
Please, if anyone knows what it is happening, help.
Thanks in advance
