如何正确使用MapStruct @Mapping和@Mappings？

Ke Vin 发表于 Dev

凯文

嗨，我的问题是当我mvn clean package建立.jar文件时，出现了一些如下所示的错误：

[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /C:/Users/Cactus/Documents/GitHub/Microservice/b2b/b2b-warehouse/src/main/java/com/bit/microservices/b2b/warehouse/mapper/ICategoryBpsjMapper.java:[27,33] No property named "createdDate" exists in source parameter(s). Did you mean "reasonDeleted"?
[ERROR] /C:/Users/Cactus/Documents/GitHub/Microservice/b2b/b2b-warehouse/src/main/java/com/bit/microservices/b2b/warehouse/mapper/ICategoryBpsjMapper.java:[27,33] No property named "createdDate" exists in source parameter(s). Did you mean "reasonDeleted"?
[INFO] 2 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  16.438 s
[INFO] Finished at: 2020-11-30T10:55:21+07:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project b2b-warehouse: Compilation failure: Compilation failure: 
[ERROR] /C:/Users/Cactus/Documents/GitHub/Microservice/b2b/b2b-warehouse/src/main/java/com/bit/microservices/b2b/warehouse/mapper/ICategoryBpsjMapper.java:[27,33] No property named "createdDate" exists in source parameter(s). Did you mean "reasonDeleted"?
[ERROR] /C:/Users/Cactus/Documents/GitHub/Microservice/b2b/b2b-warehouse/src/main/java/com/bit/microservices/b2b/warehouse/mapper/ICategoryBpsjMapper.java:[27,33] No property named "createdDate" exists in source parameter(s). Did you mean "reasonDeleted"?
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

但是，当我右键单击Boot Dashboard运行项目并启动我的项目时，它可以正常运行。和我的api工作正常。我尝试一下。

首先尝试我的代码如下所示，我有一个映射器文件，看起来像这样：

@Mapper(componentModel = "spring")
public interface ICategoryBpsjMapper {

    ICategoryBpsjMapper INSTANCE = Mappers.getMapper(ICategoryBpsjMapper.class);

    @Mappings({ 
        @Mapping(target = "createdDate", dateFormat = "dd-MM-yyyy HH:mm:ss"),
        @Mapping(target = "modifiedDate",dateFormat = "dd-MM-yyyy HH:mm:ss")})
    CategoryBpsjResponseDto entityToDto(CategoryBPSJ entity);

    CategoryBPSJ DTOEntity(CategoryBPSJDto dto);
    
    CategoryBPSJ updateEntityFromDto(CategoryBPSJDto dto, @MappingTarget CategoryBPSJ entity);
    
    List<CategoryBpsjResponseDto> entityToDto(List<CategoryBPSJ> entityList);
    
    List<CategoryBPSJ> DTOEnity(List<CategoryBPSJDto> dtoList);

}

这是我的实体：

@Data
@Entity
@Audited
@EntityListeners(AuditingEntityListener.class)
@EqualsAndHashCode(of = "id")
@ToString(of = {"id"})
@Table(name = "msCategoryBPSJ", uniqueConstraints = {
    @UniqueConstraint(name = "uk_categoryBPSJName", columnNames = { "categoryBPSJName" })})
public class CategoryBPSJ extends AuditField implements Serializable {

    private static final long serialVersionUID = 8062436315663828938L;

    @Schema(description = "Id merupakan primary key dan harus disertakan ketika edit, tipe datanya Long", example = "0", required = true)
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Schema(description = "kode kategori pengiriman", example = "BPSJCTH1", required = true)
    @NotBlank(message = "Tidak Boleh Kosong")
    private String categoryBPSCode;

    @Schema(description = "nama kategori pengiriman", example = "Toko/Gudang Tujuan Tutup", required = true)
    @NotBlank(message = "Tidak Boleh Kosong")
    private String categoryBPSJName;
    
}

这是我扩展的AuditField类：

@MappedSuperclass
@Data
@Audited
@EntityListeners(AuditingEntityListener.class)
@JsonIgnoreProperties(value = { "createdDate", "modifiedDate", "isDeleted" }, allowGetters = true, allowSetters = false)
public class AuditField implements Serializable {

    private static final long serialVersionUID = 6025082509703710749L;

    @Schema(description = "Status di hapus", example = "false", required = false)
    public Boolean isDeleted = false;

    @Schema(description = "Alasan di hapus", example = "apa pun alasannya", required = false)
    public String reasonDeleted = "";

    @CreatedDate
    private Date createdDate;
    @LastModifiedDate
    private Date modifiedDate;
    @CreatedBy
    private String createdBy;
    @LastModifiedBy
    private String modifiedBy;

}

这是我的DTO AuditFieldDto类：

@Data
public class CategoryBpsjResponseDto extends AuditFieldDto implements Serializable {

    private static final long serialVersionUID = -422185482845439241L;

    @Schema(description = "Id merupakan primary key dan harus disertakan ketika edit, tipe datanya Long", example = "0", required = true)
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    public Long id;

    @Schema(description = "kode kategori pengiriman", example = "BPSJCTH1", required = true)
    @NotBlank(message = "Tidak Boleh Kosong")
    public String categoryBPSCode;

    @Schema(description = "nama kategori pengiriman", example = "Toko/Gudang Tujuan Tutup", required = true)
    @NotBlank(message = "Tidak Boleh Kosong")
    public String categoryBPSJName;

}

这是我的AuditFieldDto类：

@Data
public class AuditFieldDto implements Serializable {

    private static final long serialVersionUID = 3758121148184815303L;

    @Schema(description = "Status di hapus", example = "false", required = false)
    public Boolean isDeleted = false;

    @Schema(description = "Alasan di hapus", example = "apa pun alasannya", required = false)
    public String reasonDeleted = "";

    private String createdDate;
    
    private String modifiedDate;
    
    private String createdBy;
    
    private String modifiedBy;

}

如您所见，AuditField和AuditFieldDto具有相同的字段，但是当我运行时mvn clean package，给我COMPILATION ERROR，就像我提到的问题的顶部一样。在错误消息中，似乎mapstruct无法正确找到该字段。然后我尝试删除@Mappings和@Mapping注释行，构建成功。似乎很可疑..因为当我在Boot Dashboard上运行时，这些注释正常工作。

这是我的pom.xml：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.bit.microservices</groupId>
        <artifactId>b2b</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>b2b-warehouse</artifactId>
    <groupId>com.bit.microservices.b2b</groupId>
    <name>b2b-warehouse</name>
    <description>B2B Warehouse Service</description>
    <version>0.0.1-SNAPSHOT</version>

    <url>http://projects.spring.io/spring-boot/</url>
    <organization>
        <name>Pivotal Software, Inc.</name>
        <url>http://www.spring.io</url>
    </organization>
    <properties>
        <main.basedir>${basedir}/../..</main.basedir>
        <lombok.version>1.18.16</lombok.version>
        <org.mapstruct.version>1.4.1.Final</org.mapstruct.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.bit.microservices</groupId>
            <artifactId>model</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-envers</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

        <dependency>
            <groupId>com.bit.b2b</groupId>
            <artifactId>security</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springdoc/springdoc-openapi-ui -->
        <dependency>
            <groupId>org.springdoc</groupId>
            <artifactId>springdoc-openapi-ui</artifactId>
            <version>1.4.3</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/io.github.classgraph/classgraph -->
        <dependency>
            <groupId>io.github.classgraph</groupId>
            <artifactId>classgraph</artifactId>
            <version>4.8.90</version>
        </dependency>


        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.modelmapper/modelmapper -->
        <dependency>
            <groupId>org.modelmapper</groupId>
            <artifactId>modelmapper</artifactId>
            <version>2.3.8</version>
        </dependency>
        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct</artifactId>
            <version>${org.mapstruct.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>13</source> <!-- depending on your project -->
                    <target>13</target> <!-- depending on your project -->
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.mapstruct</groupId>
                            <artifactId>mapstruct-processor</artifactId>
                            <version>${org.mapstruct.version}</version>
                        </path>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                            <version>${lombok.version}</version>
                        </path>
                        <path>
                            <groupId>org.springframework.boot</groupId>
                            <artifactId>spring-boot-configuration-processor</artifactId>
                            <version>2.3.4.RELEASE</version>
                        </path>
                        <!-- other annotation processors -->
                    </annotationProcessorPaths>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

如果在将项目构建为.jar文件时要使用@Mappings和@Mapping，我在项目中错过了什么mvn clean package？

凯文

我在这里找到了罪魁祸首，但是我不确定为什么这样做是正确的事情，因为当我执行此代码时，它就起作用了。好的，让我们开始吧，您可以在我的问题中检查我的mapstruct版本，这是我如何解决的问题：

首先，在我的AuditField和AuditFieldDto中，如您所见，我有2个用“ public”数据类型编写的字段，起初我将所有字段都公开编写，但后来我的朋友来推荐我将其设为私有，但是我无意间没有将所有内容都设为私有，这两个字段分别命名为public Boolean isDeleted;且public String reasonDeleted;是公开的，这就是错误通过它们的原因，它们可以正常工作，而错误则归因于我另一行写成私有的原因。

我只是随意地将其数据类型改回了公共状态，如您所见，有4个字段写在私有字段中，它们是

@CreatedDate
private Date createdDate;
@LastModifiedDate
private Date modifiedDate;
@CreatedBy
private String createdBy;
@LastModifiedBy
private String modifiedBy;

因此，我在AuditFieldDto和AuditField类中将它们全部更改为公开，我的AuditField类的完整代码如下所示：

@MappedSuperclass
@Data
@Audited
@EntityListeners(AuditingEntityListener.class)
@JsonIgnoreProperties(value = { "createdDate", "modifiedDate", "isDeleted" }, allowGetters = true, allowSetters = false)
public class AuditField implements Serializable {

    private static final long serialVersionUID = 6025082509703710749L;

    @Schema(description = "Status di hapus", example = "false", required = false)
    public Boolean isDeleted;

    @Schema(description = "Alasan di hapus", example = "apa pun alasannya", required = false)
    public String reasonDeleted;

    @CreatedDate
    public Date createdDate;
    @LastModifiedDate
    public Date modifiedDate;
    @CreatedBy
    public String createdBy;
    @LastModifiedBy
    public String modifiedBy;

}

它对我的AuditFieldDto类同样适用，如下所示：

@Data
public class AuditFieldDto implements Serializable {

    private static final long serialVersionUID = 3758121148184815303L;

    @Schema(description = "Status di hapus", example = "false", required = false)
    public Boolean isDeleted = false;

    @Schema(description = "Alasan di hapus", example = "apa pun alasannya", required = false)
    public String reasonDeleted = "";

    public String createdDate;
    
    public String modifiedDate;
    
    public String createdBy;
    
    public String modifiedBy;

}

当我运行时mvn clean package，构建就成功了！我运行了.jar文件，它起作用了！我猜为什么？因此，我坚持了几天。然后，我尝试查看生成的文件，您可以在位于项目中的生成器文件中找到target/generated-sources/annotations映射器类文件并对其进行优化。这是我的，我只举一个生成代码的例子，因为另一个似乎没有任何问题。

这是里面的内容GENERATED FILE（我们不应该仅出于查看目的而编辑此文件）：

@Component
public class ICategoryBpsjMapperImpl implements ICategoryBpsjMapper {

    @Override
    public CategoryBpsjResponseDto entityToDto(CategoryBPSJ entity) {
        if ( entity == null ) {
            return null;
        }

        CategoryBpsjResponseDto categoryBpsjResponseDto = new CategoryBpsjResponseDto();

        if ( entity.createdDate != null ) {
            categoryBpsjResponseDto.createdDate = new SimpleDateFormat( "dd-MM-yyyy HH:mm:ss" ).format( entity.createdDate );
        }
        if ( entity.modifiedDate != null ) {
            categoryBpsjResponseDto.modifiedDate = new SimpleDateFormat( "dd-MM-yyyy HH:mm:ss" ).format( entity.modifiedDate );
        }
        categoryBpsjResponseDto.isDeleted = entity.isDeleted;
        categoryBpsjResponseDto.reasonDeleted = entity.reasonDeleted;
        categoryBpsjResponseDto.createdBy = entity.createdBy;
        categoryBpsjResponseDto.modifiedBy = entity.modifiedBy;

        return categoryBpsjResponseDto;
    }

}

您会看到他们在没有get和set的情况下访问属性（我的意思是getter setter），我认为这是导致我出错的元凶，因为当我将字段标记为私有时，如果代码是这样写的，他们将无法被访问。现在这就是我解决它的方法。

如果有人有更好的答案，我将把他们的答案作为接受的答案，如果我的代码不正确或不合适，请等待。

本文收集自互联网，转载请注明来源。

如有侵权，请联系 [email protected] 删除。

编辑于 2021-01-26

我来说两句

0 条评论

登录后参与评论

上一篇：Flutter Bloc：屈服状态不会触发小部件重建

TOP 榜单

文章

如何正确使用MapStruct @Mapping和@Mappings？

如何正确使用MapStruct @Mapping和@Mappings？

Qt Creator Windows 10 - “使用 jom 而不是 nmake”不起作用

使用next.js时出现服务器错误，错误：找不到react-redux上下文值；请确保组件包装在<Provider>中

SQL Server中的非确定性数据类型

Swift 2.1-对单个单元格使用UITableView

如何避免每次重新编译所有文件？

在同一Pushwoosh应用程序上Pushwoosh多个捆绑ID

Hashchange事件侦听器在将事件处理程序附加到事件之前进行侦听

应用发明者仅从列表中选择一个随机项一次

在 Avalonia 中是否有带有柱子的 TreeView 或类似的东西？

HttpClient中的角度变化检测

在Wagtail管理员中，如何禁用图像和文档的摘要项？

如何了解DFT结果

Camunda-根据分配的组过滤任务列表

错误：找不到存根。请确保已调用spring-cloud-contract：convert

为什么此后台线程中未处理的异常不会终止我的进程？

构建类似于Jarvis的本地语言应用程序

使用分隔符将成对相邻的数组元素相互连接

您如何通过 Nativescript 中的 Fetch 发出发布请求？

通过iwd从Linux系统上的命令行连接到wifi（适用于Linux的无线守护程序）

使用React / Javascript在Wordpress API中通过ID获取选择的多个帖子/页面

使用 text() 獲取特定文本節點的 XPath