MapStruct 子实体

Question

我试图使用 mapstruct 将 DTO 转换为我的 class 表示。

class 如下所示：

public class Loan{
    private Amount total;
    private Amount paid;
}

public class Amount{
    private Long amount;
    private String currency;
}

DTO class 类似于：

public class LoanDTO{
    private Long paidAmount;
    private Long totalAmount;
    private String currency;
}

我的映射器 function 是这样的，但我不确定如何正确映射“金额”。

@Mapper
public interface ResposeMap {

    Loan toLoan(LoanDTO loanDTO);
}

Answer 1

如果您使用 java8 和 mapstruct 1.3（也许它在早期版本中工作），那么它可以是这样的：

@Mapper
public interface ResposeMap {

    @Mapping(target = "total.amount", source = "totalAmount")
    @Mapping(target = "total.currency", source = "currency")
    @Mapping(target = "paid.amount", source = "paidAmount")
    @Mapping(target = "paid.currency", source = "currency")
    Loan toLoan(LoanDTO loanDTO);
}

有关它的更多信息： Mapstruct 文档