Java Mapstruct映射查询：将属性从dto映射到实体，而不是dto上的attibute

我有一个名为TripEvent（持久性实体）的实体对象。。请看下面我想提请注意的字段是createdby和列表 名单

我的DTO类Dep是通过restful调用的Json有效负载发布的，它看起来像这样

public class Dep   {

  public Dep(){  
  }

  @NotEmpty(message = "seqNo: is a required field")
  @JsonProperty("seqNo")
  private String seqNo = null;


  @NotNull(message = "depTStamp: is a required field")
  @JsonProperty("depTStamp")
  private ZonedDateTime depTStamp = null;


  @NotEmpty(message = "port: is a required field")
  @JsonProperty("port")
  private String port = null;


  @JsonProperty("nonEUPort")
  private String nonEUPort = null;


  @NotEmpty(message = "activity: is a required field")
  @JsonProperty("activity")
  private String activity = null;


  @JsonProperty("comments")
  private String comments = null;


  @JsonProperty("spe")
  @Valid
  private List<DepSpe> spe = new ArrayList<DepSpe>();


  @JsonProperty("gea")
  @Valid
  private List<NonFarGea> gea = new ArrayList<NonFarGea>();


  public Dep seqNo(String seqNo) {
    this.seqNo = seqNo;
    return this;
  }

公共类Dep{
公共部门{
}
@NotEmpty（message=“seqNo:是必填字段”）
@JsonProperty（“seqNo”）
私有字符串seqNo=null；
@NotNull（message=“depTStamp:是必填字段”）
@JsonProperty（“depTStamp”）
private ZoneDateTime depTStamp=null；
@NotEmpty（message=“port:是必填字段”）
@JsonProperty（“端口”）
私有字符串端口=null；
@JsonProperty（“非uport”）
私有字符串nonEUPort=null；
@NotEmpty（message=“activity:是必填字段”）
@JsonProperty（“活动”）
私有字符串活动=null；
@JsonProperty（“注释”）
私有字符串注释=null；
@JsonProperty（“spe”）
@有效的
私有列表spe=newarraylist（）；
@JsonProperty（“gea”）
@有效的
私有列表gea=新的ArrayList（）；
公共部门序号（字符串序号）{
this.seqNo=seqNo；
归还这个；
}

您可以看到，如果这个DTO没有被创建的字段，那么在我的映射类中，您将看到我必须执行的操作，有各种对mappes的调用，这些调用将代码转换为ID等

@Mapper(componentModel="spring",
uses = {
 ZonedDateTimeStampMapper.class, 
 ConfigMapperFromCode.class,
 RasDepMapper.class
 },
 unmappedTargetPolicy = ReportingPolicy.IGNORE
)


public interface DepToTripEventMapperApi {


 /*root mapper from a dep dto to a entity trip event*/

 @Mappings(
  {
    @Mapping(target = "createdby", source = "regUserId"),
    @Mapping(target = "createdate",expression = "java(java.sql.Timestamp.valueOf(java.time.LocalDateTime.now()))"),
    @Mapping(target = "inactiveind", constant = "N"),
    @Mapping(target = "eventtypeid", qualifiedByName={"ConfigMapperFromCode", "returnDepEventId"}),
    @Mapping(target = "activitytypeid", qualifiedByName={"ConfigMapperFromCode", "activityIdFromCode"}, source="depDto.activity"),
    @Mapping(target = "marineportid", qualifiedByName={"ConfigMapperFromCode", "portIdFromCode"}, source = "depDto.port"),
    @Mapping(target = "alertind", constant = "N"),
    @Mapping(target = "eventnote", source = "depDto.nonEUPort"),
    @Mapping(target = "ersseqno", source = "depDto.seqNo"),
    @Mapping(target = "skippercomment", source = "depDto.comments"),
    @Mapping(target = "tdfiErsmessageid", source = "messageId"),
    @Mapping(target = "startdate", source = "depDto.depTStamp"),
    @Mapping(target = "completedind", constant = "N"),
    @Mapping(target = "vessel", source = "vessell"),
    @Mapping(target = "triplogs", source = "tripLogs"),
    @Mapping(target = "lastchangedate", ignore = true),
    @Mapping(target = "lastchangedby", ignore = true),
    @Mapping(target = "tdfiCatchmovements", ignore = true),
    @Mapping(target = "tdfiFishgears", source="depDto.gea"),
    ..
  }
 )
 Tripevent DepDtoToTripEvent(Dep depDto, String regUserId, Long messageId, Vessel vessell, List<Triplog>tripLogs);



 // mapper from nonnfargea to fishing gear
 @Mappings(
 {
 @Mapping(target = "meshdimension", source = "gea.gearDims"),
 @Mapping(target = "geartypeid", qualifiedByName={"ConfigMapperFromCode", "gearIdFromCode"},  source = "gea.gearType"),
 @Mapping(target = "avgnetheight", source = "gea.avNetHeight"),
 @Mapping(target = "avgnetlength", source = "gea.avNetLength"),
 @Mapping(target = "meshsize", source = "gea.meshSize"),
 @Mapping(target = "avghookcount", source = "gea.avHooks"),
 @Mapping(target = "totnetquantity", source = "gea.noNets"),
 @Mapping(target = "tothookscount", source = "gea.totHooks"),
 @Mapping(target = "totnetlength", source = "gea.totLen"), 
 @Mapping(target = "trawltypeid", qualifiedByName={"ConfigMapperFromCode", "speciesIdFromCode"},  source = "gea.trawlType")
 }
 )
 TdfiFishgear geaToFishGear(NonFarGea gea);

....
...

@Mapper（componentModel=“spring”，
使用={
ZonedDateTimestamper.class，
ConfigMapperFromCode.class，
RasDepMapper.class
},
UnappedTargetPolicy=ReportingPolicy.IGNORE
)
公共接口DepToTripEventMapperApi{
/*从dep dto到实体trip事件的根映射程序*/
@映射(
{
@映射（target=“createdby”，source=“regUserId”），
@映射（target=“createdate”，expression=“java（java.sql.Timestamp.valueOf（java.time.LocalDateTime.now（））”，
@映射（target=“inactiveind”，constant=“N”），
@映射（target=“eventtypeid”，qualifiedByName={“ConfigMapperFromCode”，“returnDepEventId”}），
@映射（target=“activitytypeid”，qualifiedByName={“ConfigMapperFromCode”，“activityIdFromCode”}，source=“depDto.activity”），
@映射（target=“marineportid”，qualifiedByName={“ConfigMapperFromCode”，“portIdFromCode”}，source=“depDto.port”），
@映射（target=“alertind”，constant=“N”），
@映射（target=“eventnote”，source=“depDto.nonEUPort”），
@映射（target=“ersseqno”，source=“depDto.seqNo”），
@映射（target=“skippercomment”，source=“depDto.comments”），
@映射（target=“tdfiErsmessageid”，source=“messageId”），
@映射（target=“startdate”，source=“depDto.depTStamp”），
@映射（target=“completedind”，constant=“N”），
@映射（target=“vessel”，source=“vessell”），
@映射（target=“triplogs”，source=“triplogs”），
@映射（target=“lastchangedate”，ignore=true），
@映射（target=“lastchangedby”，ignore=true），
@映射（target=“tdfiCatchmovements”，ignore=true），
@映射（target=“tdfiFishgears”，source=“depDto.gea”），
..
}
)
Tripevent DepdToTripEvent（Dep depDto、String regUserId、Long messageId、vessell船只、ListtripLogs）；
//从非阿根廷到渔具的映射器
@映射(
{
@映射（target=“meshdimension”，source=“gea.gearDims”），
@映射（target=“geartypeid”，qualifiedByName={“ConfigMapperFromCode”，“gearIdFromCode”}，source=“gea.gearType”），
@映射（target=“avgnetheight”，source=“gea.avNetHeight”），
@映射（target=“avgnetlength”，source=“gea.avNetLength”），
@映射（target=“meshsize”，source=“gea.meshsize”），
@映射（target=“avghookcount”，source=“gea.avHooks”），
@映射（target=“totnetquantity”，source=“gea.noNets”），
@映射（target=“tothookscont”，source=“gea.totHooks”），
@映射（target=“totnetlength”，source=“gea.totLen”），
@映射（target=“trawltypeid”，qualifiedByName={“ConfigMapperFromCode”，“speciesIdFromCode”}，source=“gea.trawlType”）
}
)
TdfiFishgear GEATOFFISHGEAR（非阿根廷gea）；
....
...

因此，dto对象之外的字段在实体对象中是必需的，除了这些字段之外，映射工作得非常好

因此，我试图找出如何从depDTo.gea填充一个tdfiFishgears列表，以包含一个createdby字段，该字段不在dto上，但在列表中的所有实例上都是必需的。我通过将它们作为方法（接口）的参数传入，在顶层对此进行了修改…我不想提供一个自定义映射器来循环列表，并手动实例化和映射对象，因为映射与此字段100%分离。我有更多映射

任何想法…我还应该提到，DTO层不能更改，因为它来自另一个团队

---

这是我在ide中遇到的错误的图像…

您可以做的是使用

@AfterMapping

，

@BeforeMapping

以及最新的1.2.0（在post Beta2发布时还不是最终版本）

@Context

挂钩，以便填充这些字段

它将看起来像：

class ExtraFields {

    private String createdBy;
    //Getters omitted
}

public interface DepToTripEventMapperApi {

    //Your mappings
    Tripevent DepDtoToTripEvent(Dep depDto, String regUserId, Long messageId, Vessel vessell, List<Triplog>tripLogs, @Context ExtraFields extra);

    //Your mappings
    TdfiFishgear geaToFishGear(NonFarGea gea, @Context ExtraFields extra);

    @AfterMapping
    default void afterMapping(@MappingTarget TdfiFishgear fea, @Context ExtraFields extra) {
        fea.setCreatedBy(extra.getCreatedBy());
    }
}

---

谢谢您的回复，在这个更改之后，我得到了一个编译错误……当我将@上下文参数添加到它的接口时，ToIP事件映射器不再识别GeaToFixSead映射器……不能将属性“java. UTILIST GEA”映射到“JavaUTILITUCTTDIFFISHORKS”。考虑声明/实现映射方法：“java. U.T.LIST映射”（java.util.List值）。这是一个TDFIFISHGEAR列表。您需要将

@Context

添加到所有使用

geaToFishGear

映射器的映射器中，而不仅仅是映射器本身。它们是在同一映射器中还是在不同的映射器中？您是否也将

@Context

添加到

DepdtototTripEvent

中？嗨..我添加到了所有映射器（2），有两个映射器一个映射跳闸事件对象（包含齿轮列表），另一个映射器映射列表中的齿轮实例…'tFifishGear GeatFishGear（非齿轮gea

@Mapper(componentModel="spring",
uses = {
 ZonedDateTimeStampMapper.class, 
 ConfigMapperFromCode.class,
 RasDepMapper.class
 },
 unmappedTargetPolicy = ReportingPolicy.IGNORE
)


public interface DepToTripEventMapperApi {


 /*root mapper from a dep dto to a entity trip event*/

 @Mappings(
  {
    @Mapping(target = "createdby", source = "regUserId"),
    @Mapping(target = "createdate",expression = "java(java.sql.Timestamp.valueOf(java.time.LocalDateTime.now()))"),
    @Mapping(target = "inactiveind", constant = "N"),
    @Mapping(target = "eventtypeid", qualifiedByName={"ConfigMapperFromCode", "returnDepEventId"}),
    @Mapping(target = "activitytypeid", qualifiedByName={"ConfigMapperFromCode", "activityIdFromCode"}, source="depDto.activity"),
    @Mapping(target = "marineportid", qualifiedByName={"ConfigMapperFromCode", "portIdFromCode"}, source = "depDto.port"),
    @Mapping(target = "alertind", constant = "N"),
    @Mapping(target = "eventnote", source = "depDto.nonEUPort"),
    @Mapping(target = "ersseqno", source = "depDto.seqNo"),
    @Mapping(target = "skippercomment", source = "depDto.comments"),
    @Mapping(target = "tdfiErsmessageid", source = "messageId"),
    @Mapping(target = "startdate", source = "depDto.depTStamp"),
    @Mapping(target = "completedind", constant = "N"),
    @Mapping(target = "vessel", source = "vessell"),
    @Mapping(target = "triplogs", source = "tripLogs"),
    @Mapping(target = "lastchangedate", ignore = true),
    @Mapping(target = "lastchangedby", ignore = true),
    @Mapping(target = "tdfiCatchmovements", ignore = true),
    @Mapping(target = "tdfiFishgears", source="depDto.gea"),
    ..
  }
 )
 Tripevent DepDtoToTripEvent(Dep depDto, String regUserId, Long messageId, Vessel vessell, List<Triplog>tripLogs);



 // mapper from nonnfargea to fishing gear
 @Mappings(
 {
 @Mapping(target = "meshdimension", source = "gea.gearDims"),
 @Mapping(target = "geartypeid", qualifiedByName={"ConfigMapperFromCode", "gearIdFromCode"},  source = "gea.gearType"),
 @Mapping(target = "avgnetheight", source = "gea.avNetHeight"),
 @Mapping(target = "avgnetlength", source = "gea.avNetLength"),
 @Mapping(target = "meshsize", source = "gea.meshSize"),
 @Mapping(target = "avghookcount", source = "gea.avHooks"),
 @Mapping(target = "totnetquantity", source = "gea.noNets"),
 @Mapping(target = "tothookscount", source = "gea.totHooks"),
 @Mapping(target = "totnetlength", source = "gea.totLen"), 
 @Mapping(target = "trawltypeid", qualifiedByName={"ConfigMapperFromCode", "speciesIdFromCode"},  source = "gea.trawlType")
 }
 )
 TdfiFishgear geaToFishGear(NonFarGea gea);

....
...

class ExtraFields {

    private String createdBy;
    //Getters omitted
}

public interface DepToTripEventMapperApi {

    //Your mappings
    Tripevent DepDtoToTripEvent(Dep depDto, String regUserId, Long messageId, Vessel vessell, List<Triplog>tripLogs, @Context ExtraFields extra);

    //Your mappings
    TdfiFishgear geaToFishGear(NonFarGea gea, @Context ExtraFields extra);

    @AfterMapping
    default void afterMapping(@MappingTarget TdfiFishgear fea, @Context ExtraFields extra) {
        fea.setCreatedBy(extra.getCreatedBy());
    }
}

class ExtraFields {

    private String createdBy;

    public ExtraField(String createdBy) {
        this.createdBy = createdBy;
    }

    @AfterMapping
    public void afterFishGear(@MappingTarget fishGear) {
        fishGear.setCreatedBy(createdBy);
    }
}