我有这个豆
@XmlRootElement
class Test {
boolean someValue;
List<Field> fields;
}
我想将其序列化为
<fields>
<field>
<name>someValue</name>
<value>...</value>
</field>
</fields>
<fields>
<field>
<name>otherValue</name>
<value>...</value>
</field>
</fields>
(或作为json)
我该怎么做,最好使用jaxb注释?
我正在使用运动衫,但答案并不一定是具体的。
答案 0 :(得分:1)
以下情况如何?
使用EclipseLink JAXB (MOXy),您可以执行以下操作。注意:我是MOXy技术主管。
测试
import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import org.eclipse.persistence.oxm.annotations.XmlPath;
@XmlRootElement
@XmlType(propOrder={"someValue", "fields"})
@XmlAccessorType(XmlAccessType.FIELD)
class Test {
@XmlJavaTypeAdapter(SomeValueAdapter.class)
@XmlPath("fields[1]")
boolean someValue;
@XmlJavaTypeAdapter(FieldsAdapter.class)
List<Field> fields = new ArrayList<Field>();
public Boolean isSomeValue() {
return someValue;
}
public void setSomeValue(boolean someValue) {
this.someValue = someValue;
}
public List<Field> getFields() {
return fields;
}
public void setFields(List<Field> fields) {
this.fields = fields;
}
public void afterUnmarshal(Unmarshaller unmarshaller, Object parent) {
for(Field field : fields) {
if("someValue".equals(field.getName())) {
someValue = Boolean.valueOf(field.getValue());
fields.remove(field);
}
}
}
}
字段强>
public class Field {
private String name;
private String value;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
}
<强> SomeValueAdapter 强>
import javax.xml.bind.annotation.adapters.XmlAdapter;
public class SomeValueAdapter extends XmlAdapter<AdaptedField, Boolean> {
@Override
public Boolean unmarshal(AdaptedField v) throws Exception {
String value = v.getField().getValue();
return Boolean.valueOf(value);
}
@Override
public AdaptedField marshal(Boolean v) throws Exception {
AdaptedField adaptedField = new AdaptedField();
Field field = new Field();
field.setName("someValue");
field.setValue(String.valueOf(v));
adaptedField.setField(field);
return adaptedField;
}
}
<强> FieldsAdapter 强>
import javax.xml.bind.annotation.adapters.XmlAdapter;
public class FieldsAdapter extends XmlAdapter<AdaptedField, Field> {
@Override
public Field unmarshal(AdaptedField v) throws Exception {
return v.getField();
}
@Override
public AdaptedField marshal(Field v) throws Exception {
AdaptedField adaptedField = new AdaptedField();
adaptedField.setField(v);
return adaptedField;
}
}
<强> AdaptedField 强>
public class AdaptedField {
private Field field;
public Field getField() {
return field;
}
public void setField(Field field) {
this.field = field;
}
}
<强>演示强>
import java.io.File;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance(Test.class);
Unmarshaller unmarshaller = jc.createUnmarshaller();
Test test = (Test) unmarshaller.unmarshal(new File("input.xml"));
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(test, System.out);
}
}
<强> input.xml中强>
<?xml version="1.0" encoding="UTF-8"?>
<test>
<fields>
<field>
<name>someValue</name>
<value>true</value>
</field>
</fields>
<fields>
<field>
<name>otherValue</name>
<value>1</value>
</field>
</fields>
<fields>
<field>
<name>anotherValue</name>
<value>2</value>
</field>
</fields>
</test>
了解更多信息