我正在嘗試使用地圖結構映射和龍目島生成器創建補丁方法。但在生成的代碼中缺少調用build()刪除空值的映射器：@Mapper( nullValueCheckStrategy = NullValueCheckStrategy.ALWAYS, nullValuePropertyMappingStrategy = NullValuePropertyMappingStrategy.IGNORE)public interface CartMapper { CartMapper INSTANCE = Mappers.getMapper(CartMapper.class); Cart cartRequestToCart(CartRequest cartRequest); Cart patch(CartRequest cartRequest, @MappingTarget Cart cart);}嵌套類具有與 Cart 相同的龍目島注釋：@Builder@AllArgsConstructor(access = AccessLevel.PACKAGE)@Getter@Setter@FieldDefaults(level = AccessLevel.PRIVATE)public class Cart { Customer customer; Owner owner; Integer price; String voucher;}所有嵌套類都具有與 CartRequest 相同的龍目島注釋，并且結構與目標實體結構相同@Data@FieldDefaults(level = AccessLevel.PRIVATE)public class CartRequest { CustomerRequest customer; OwnerRequest owner; Integer price; String voucher;}對于方法，一切都很好，在這里調用構建器，也在嵌套方法中調用cartRequestToCart @Override public Cart cartRequestToCart(CartRequest cartRequest) { if ( cartRequest == null ) { return null; } CartBuilder cart = Cart.builder(); if ( cartRequest.getCustomer() != null ) { cart.customer( customerRequestToCustomer( cartRequest.getCustomer() ) ); } if ( cartRequest.getOwner() != null ) { cart.owner( ownerRequestToOwner( cartRequest.getOwner() ) ); } if ( cartRequest.getPrice() != null ) { cart.price( cartRequest.getPrice() ); } if ( cartRequest.getVoucher() != null ) { cart.voucher( cartRequest.getVoucher() ); } return cart.build(); }一些提示如何解決這個問題？多謝。
4 回答
倚天杖
TA貢獻1828條經驗 獲得超3個贊
龍目島更新 1.18.16.
啟動此版本的工作配置是maven-compiler-plugin
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<annotationProcessorPaths>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok-mapstruct-binding</artifactId>
<version>0.2.0</version>
</path>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>1.4.1.Final</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.16</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
各部分的順序很重要！path
MYYA
TA貢獻1868條經驗 獲得超4個贊
呼喚遠方
TA貢獻1856條經驗 獲得超11個贊
正如格雷戈里·馬祖爾所指出的，這篇文章也幫助了我，但我有Maven構建系統。這是 Maven 的配置版本：
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
</dependency>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-jdk8</artifactId>
<version>1.3.1.Final</version>
</dependency>
...
</dependencies>
...
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>1.3.1.Final</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
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