英文:
How to set defaultValue for boolean field in jaxb
问题
在尝试使用@XmlJavaTypeAdapter(BooleanAdapter.class)对具有布尔属性的对象进行编组和解组时，我在JSON响应中得到了null，而不是false。
我的示例对象和适配器类如下：
public class Test {
@XmlJavaTypeAdapter(BooleanAdapter.class)
boolean b1;
@XmlJavaTypeAdapter(BooleanAdapter.class)
boolean b2;
@XmlJavaTypeAdapter(BooleanAdapter.class)
boolean b3;
}
public class BooleanAdapter extends XmlAdapter<Boolean, Boolean> {
@Override
public Boolean unmarshal(Boolean v) throws Exception {
/*
*
*/
return Boolean.TRUE.equals(v);
}
@Override
public Boolean marshal(Boolean v) throws Exception {
if (v) {
return v;
}
return null;
}
}
在编组时，我会移除值为false的字段，以将响应存储到数据库中。但当我获取JSON响应时，结果如下：
{
"b1" : null,
"b2" : true,
"b3" : null
}
这里b1和b2的值应为false，而不是null。
请在这个问题上提供帮助。
英文:
While am trying to Marshaling and marshaling object with boolean properties with @XmlJavaTypeAdapter(BooleanAdapter.class) am getting 'null' instead of 'false' in json response.
my sample object and adapter classes are below.
public class Test
{
@XmlJavaTypeAdapter(BooleanAdapter.class)
boolean b1;
@XmlJavaTypeAdapter(BooleanAdapter.class)
boolean b2;
@XmlJavaTypeAdapter(BooleanAdapter.class)
boolean b3;
}
public class BooleanAdapter extends XmlAdapter<Boolean, Boolean> {
@Override
public Boolean unmarshal(Boolean v) throws Exception {
/*
*
*/
return Boolean.TRUE.equals(v);
}
@Override
public Boolean marshal(Boolean v) throws Exception {
if (v) {
return v;
}
return null;
}
}
in Marshaling am removing fields with 'false' value to store the response in database.
but when i getting json response is coming like below.
{
"b1" : null,
"b2" : true,
"b3" : null
}
here b1&b2 values are false. i required value as false instead of null in response.
please help on this.
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