我有以下目标类(class):
public class Person {
private String firstName;
private String lastName;
...
}
public class Employee extends Person {
private String postion;
...
}
public class PersonContainer {
private Person person;
...
}
这是我的来源:
public class Form {
private String firstNameEmployee;
private String lastNameEmployee;
private String positionEmployee;
...
}
目标
我想获取对象PersonContainer,但不是使用Person对象,而是使用Employee对象。我真的不知道如何实现这一目标。如何告诉Dozer实例化一个子类?
此映射给出了Person对象:
<mapping>
<class-a>hl.test.dozer03.form.Form</class-a>
<class-b>hl.test.dozer03.result.PersonContainer</class-b>
<field>
<a>firstNameEmployee</a>
<b>person.firstName</b>
</field>
<field>
<a>lastNameEmployee</a>
<b>person.lastName</b>
</field>
</mapping>
可以通过稍微修改这个映射来完成吗?
最佳答案
您需要使用自定义createMethod。 http://dozer.sourceforge.net/documentation/customCreateMethod.html
类似这样的事情:
<mapping>
<class-a>hl.test.dozer03.form.Form</class-a>
<class-b create- method="PersonContainerFactory.createPersonContainer">hl.test.dozer03.result.PersonContainer</class-b>
<field>
<a>firstNameEmployee</a>
<b>person.firstName</b>
</field>
<field>
<a>lastNameEmployee</a>
<b>person.lastName</b>
</field>
</mapping>
使用 java 类:
public class PersonContainerFactory {
public static PersonContainer createPersonContainer(){
PersonContainer cont = new PersonContainer();
cont.setPerson(new Employee());
return classA;
}
}
关于java - 如何用Dozer实例化子类?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/21418928/