在我的项目中,我使用lombok和mapstruct。
这是我的实体。
钱包
package com.coin.cointracker.entity;
import lombok.*;
import javax.persistence.*;
import java.util.HashSet;
import java.util.Set;
@Entity
@Getter
@Setter
@NoArgsConstructor
@RequiredArgsConstructor
public class Wallet {
//Library
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@NonNull
private Long id;
@NonNull
private double InitialHolding;
@NonNull
private String currency;
@OneToMany(mappedBy = "wallet", cascade = CascadeType.REMOVE)
private Set<Transaction> transactions = new HashSet<>();
}
这是dto,walletresponse
import lombok.*;
@Getter
@Setter
@AllArgsConstructor
@NoArgsConstructor
public class WalletResponse {
private Long id;
private double InitialHolding;
private String currency;
}
钱包Map器
import com.coin.cointracker.dto.response.WalletResponse;
import com.coin.cointracker.entity.Wallet;
import org.mapstruct.Mapper;
import org.mapstruct.factory.Mappers;
import java.util.Optional;
@Mapper(componentModel = "spring")
public interface WalletMapper {
WalletMapper map = Mappers.getMapper(WalletMapper.class);
//TODO: Is it problem to have Optional as type for parameter?
WalletResponse walletToWalletResponse(Optional<Wallet> wallet);
//Wallet walletRequestToWallet(WalletRequest walletRequest);
}
最后是我的pom.xml:
<properties>
<java.version>1.8</java.version>
<org.mapstruct.version>1.4.1.Final</org.mapstruct.version>
<org.projectlombok.version>1.18.16</org.projectlombok.version>
<lombok-mapstruct-binding.version>0.2.0</lombok-mapstruct-binding.version>
</properties>
...
...
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct</artifactId>
<version>${org.mapstruct.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok-mapstruct-binding</artifactId>
<version>${lombok-mapstruct-binding.version}</version>
</dependency>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>1.4.1.Final</version>
</dependency>
</dependencies>
...
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source> <!-- depending on your project -->
<target>1.8</target> <!-- depending on your project -->
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>1.3.0.Beta2</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.4</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
存储库和服务运行良好。存储库成功地从数据库中获取数据,并且服务成功地使用数据库中的数据调用Map器。但mapper无法将walletMap到walletresponse。其结果如下:
{
"id":null,
"InitialHolding":0.00,
"currency":null
}
我哪里出错了?
编辑:这里是生成的walletmapperimpl
package com.coin.cointracker.mapper;
import com.coin.cointracker.dto.response.WalletResponse;
import com.coin.cointracker.entity.Wallet;
import java.util.Optional;
import javax.annotation.Generated;
import org.springframework.stereotype.Component;
@Generated(
value = "org.mapstruct.ap.MappingProcessor",
date = "2021-01-25T19:41:00+0300",
comments = "version: 1.4.1.Final, compiler: javac, environment: Java 1.8.0_261 (Oracle Corporation)"
)
@Component
public class WalletMapperImpl implements WalletMapper {
@Override
public WalletResponse walletToWalletResponse(Optional<Wallet> wallet) {
if ( wallet == null ) {
return null;
}
WalletResponse walletResponse = new WalletResponse();
return walletResponse;
}
}
暂无答案!
目前还没有任何答案,快来回答吧!