MapStruct 高级：将多个对象合并成一个对象

用来合并的对象

• User.java

@Getter
@Setter
@ToString
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private Integer id;
    private String name;
}

• Addr.java

@Getter
@Setter
@ToString
@NoArgsConstructor
@AllArgsConstructor
public class Addr {
    private Integer countryId;
    private String address;
}

• 待合并成的对象

@Getter
@Setter
@ToString
@NoArgsConstructor
@AllArgsConstructor
public class UserAddr {
    private Integer id;
    private String name;
    private String addr;
}

转换接口

@Mapper
public interface UserAddrTrans {
    UserAddrTrans MAPPER = Mappers.getMapper(UserAddrTrans.class);

    UserAddr category2categoryItem(User user, Addr addr);
}

测试代码

public static void main(String[] args) {
    UserAddr userAddr = UserAddrTrans.MAPPER.category2categoryItem(new User(1, "zhangsan"), new Addr(2, "haha"));
    System.out.println(userAddr);
}

结果