Java JAXB anyType无法强制转换
下面的代码导致了一个强制转换异常,我不知道为什么。ParameterValueList中的对象应该急切地解组到JAXB对象ParameterValueStruct,但事实并非如此。所有内容都是直接从soap编码和cwmp模式文件生成的 有人有什么建议吗Java JAXB anyType无法强制转换,java,xml,soap,jaxb,Java,Xml,Soap,Jaxb,下面的代码导致了一个强制转换异常,我不知道为什么。ParameterValueList中的对象应该急切地解组到JAXB对象ParameterValueStruct,但事实并非如此。所有内容都是直接从soap编码和cwmp模式文件生成的 有人有什么建议吗 public static void main(String[] args) throws JAXBException, FileNotFoundException { JAXBContext c = JAXBContext.newIn
public static void main(String[] args) throws JAXBException, FileNotFoundException
{
JAXBContext c = JAXBContext.newInstance("org.dslforum.cwmp_1_1");
Unmarshaller u = c.createUnmarshaller();
Inform inform = (Inform) u.unmarshal(new FileInputStream("test.xml"));
List<Object> list = inform.getParameterList().getAny();
System.out.println(list); // prints [[ParameterValueStruct: null], ...
for (Object o : list) {
ParameterValueStruct pv = (ParameterValueStruct)o; // exception here
System.out.println(pv.getName());
}
}
第二个文件:
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "ParameterValueStruct", propOrder = {
"name",
"value"
})
public class ParameterValueStruct {
@XmlElement(name = "Name", required = true)
protected String name;
@XmlElement(name = "Value", required = true)
@XmlSchemaType(name = "anySimpleType")
protected Object value;
...
}
这是我的test.xml文件:
<?xml version="1.0"?>
<cwmp:Inform xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:soap-enc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:cwmp="urn:dslforum-org:cwmp-1-1" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<ParameterList soap-enc:arrayType="cwmp:ParameterValueStruct[3]">
<ParameterValueStruct>
<Name>Device.DHCPv4.ClientNumberOfEntries</Name>
<Value xsi:type="xsd:unsignedInt">0</Value>
</ParameterValueStruct>
<ParameterValueStruct>
<Name>Device.DNS.Client.ServerNumberOfEntries</Name>
<Value xsi:type="xsd:unsignedInt">1</Value>
</ParameterValueStruct>
<ParameterValueStruct>
<Name>Device.DeviceInfo.AdditionalSoftwareVersion</Name>
<Value xsi:type="xsd:string">DM: 532,SK: 2.6.33.9-rt31,SF: 251X 137.0,BK: 10</Value>
</ParameterValueStruct>
</ParameterList>
</cwmp:Inform>
Device.DHCPv4.ClientNumberOfEntries
0
Device.DNS.Client.ServerNumberOfEntries
1.
Device.DeviceInfo.AdditionalSoftwareVersion
DM:532,SK:2.6.33.9-rt31,SF:251x137.0,BK:10
您只需将@XmlRootElement(name=“ParameterValueStruct”,namespace=”“)
添加到ParameterValueStruct
这里您需要显式的namespace=“
,因为package info.java
@javax.xml.bind.annotation.XmlSchema(namespace = "urn:dslforum-org:cwmp-1-1")
package org.dslforum.cwmp_1_1;
T正确的类应该是这样的:
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "ParameterValueStruct", propOrder = {
"name",
"value"
})
@XmlRootElement(name="ParameterValueStruct",namespace="")
public class ParameterValueStruct {
@XmlElement(name = "Name", required = true)
protected String name;
@XmlElement(name = "Value", required = true)
@XmlSchemaType(name = "anySimpleType")
protected Object value;
...
}
PS:有关
@xmlanyement(lax=true)
必须在您的建议中添加namespace=”“才能使其正常工作的更好的JAXB教程,请参见此。总共:@XmlRootElement(name=“ParameterValueStruct”,namespace=”“)@ComputerEngineer88我错过了为所有类设置名称空间的package-info.java,下面是更新的答案。我仍然不确定为什么需要指定空名称空间。有没有办法做到这一点,使得ParameterValueStruct可以像包中的其他类一样进行强制转换?Ie不必指定空名称空间?我不确定原因是什么,但它必须是ParameterValueList extends Array
。您可以将ParameterValueList更改为不扩展数组,并拥有它自己的字段。
@javax.xml.bind.annotation.XmlSchema(namespace = "urn:dslforum-org:cwmp-1-1")
package org.dslforum.cwmp_1_1;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "ParameterValueStruct", propOrder = {
"name",
"value"
})
@XmlRootElement(name="ParameterValueStruct",namespace="")
public class ParameterValueStruct {
@XmlElement(name = "Name", required = true)
protected String name;
@XmlElement(name = "Value", required = true)
@XmlSchemaType(name = "anySimpleType")
protected Object value;
...
}