2个枚举:
enum Source {
WINTER,
SPRING,
SUMMER,
AUTUMN
}
和
enum Dest {
WINTER,
SPRING,
SUMMER,
AUTUMN
}
尝试使用
Source
将Dest
转换为Dozer
:DozerBeanMapper mapper = new DozerBeanMapper();
mapper.map(Source.WINTER, Dest.class);
线程“主” org.dozer.MappingException中的异常:
java.lang.NoSuchMethodException:目标()
但是,当我尝试转换包含上述枚举的复杂对象时,Dozer成功地对其进行了转换。
因此,当Dozer不是复杂对象的属性时,为什么Dozer无法将Enum转换为Enum?
最佳答案
Dozer无法映射枚举,因为它依赖于默认无参数公共构造函数的存在。仅当它们是较大的POJO的一部分时,才可以映射它们。例如:
enum Source {
WINTER,
SPRING,
SUMMER,
AUTUMN
}
public class SourceClass{
private Source season;
public Source getSeason() {
return season;
}
public void setSeason(Source season) {
this.season = season;
}
}
和
enum Dest {
WINTER,
SPRING,
SUMMER,
AUTUMN
}
public class DestClass{
private Dest season;
public Dest getSeason() {
return season;
}
public void setSeason(Dest season) {
this.season = season;
}
}
现在这将起作用:
SourceClass source = new SourceClass();
source.setSeason(Source.AUTUMN);
DestClass dest = mapper.map(source, DestClass.class);