如何使用BeanUtils.copyProperties？

问题描述 投票：0回答：4

我正在尝试将属性从一个 bean 复制到另一个 bean。这是两个豆子的签名：

SearchContent
:

public class SearchContent implements Serializable {

    private static final long serialVersionUID = -4500094586165758427L;

    private Integer id;
    private String docName;
    private String docType;
    private String docTitle;
    private String docAuthor;
    private String securityGroup;
    private String docAccount;
    private Integer revLabel;

    private String profile;
    private LabelValueBean<String> workflowStage;

    private Date createDate;
    private Date inDate;

    private String originalName;
    private String format;
    private String extension;
    private Long fileSize;

    private String author;

    private LabelValueBean<String> entity;
    private LabelValueBean<String> brand;
    private LabelValueBean<String> product;
    private LabelValueBean<String> collection;
    private LabelValueBean<String> subCollection;

    private String description;
    private LabelValueBean<String> program;
    private String vintage;
    private String model;
    private String restrictedZone;
    private LabelValueBean<String> event;
    private LabelValueBean<String> language;
    private String geographicLocation;
    private String watermark;
    private Integer pageNumber;
    private String summary;
    private String agentName;
    private String commissionedByName;
    private String commissionedByDepartment;
    private LabelValueBean<Integer> bestOf;
    private String mediaLocation;

    private LabelValueBean<Integer> fullRights;
    private LabelValueBean<String> mediaUsage;
    private Date rightsEndDate;
    private String geographicRights;
    private LabelValueBean<Integer> evinConformity;
    private String contactReference;
    private LabelValueBean<String> publicationScope;
    private String rightsComment;

    /**
     * Constructor SearchContent
     * @author TapasB
     * @since 15-Oct-2013 - 5:45:55 pm
     * @version DAM 1.0
     */
    public SearchContent() {

    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getDocName() {
        return docName;
    }

    public void setDocName(String docName) {
        this.docName = docName;
    }

    public String getDocType() {
        return docType;
    }

    public void setDocType(String docType) {
        this.docType = docType;
    }

    public String getDocTitle() {
        return docTitle;
    }

    public void setDocTitle(String docTitle) {
        this.docTitle = docTitle;
    }

    public String getDocAuthor() {
        return docAuthor;
    }

    public void setDocAuthor(String docAuthor) {
        this.docAuthor = docAuthor;
    }

    public String getSecurityGroup() {
        return securityGroup;
    }

    public void setSecurityGroup(String securityGroup) {
        this.securityGroup = securityGroup;
    }

    public String getDocAccount() {
        return docAccount;
    }

    public void setDocAccount(String docAccount) {
        this.docAccount = docAccount;
    }

    public Integer getRevLabel() {
        return revLabel;
    }

    public void setRevLabel(Integer revLabel) {
        this.revLabel = revLabel;
    }

    public String getProfile() {
        return profile;
    }

    public void setProfile(String profile) {
        this.profile = profile;
    }

    public LabelValueBean<String> getWorkflowStage() {
        return workflowStage;
    }

    public void setWorkflowStage(LabelValueBean<String> workflowStage) {
        this.workflowStage = workflowStage;
    }

    public Date getCreateDate() {
        return createDate;
    }

    public void setCreateDate(Date createDate) {
        this.createDate = createDate;
    }

    public Date getInDate() {
        return inDate;
    }

    public void setInDate(Date inDate) {
        this.inDate = inDate;
    }

    public String getOriginalName() {
        return originalName;
    }

    public void setOriginalName(String originalName) {
        this.originalName = originalName;
    }

    public String getFormat() {
        return format;
    }

    public void setFormat(String format) {
        this.format = format;
    }

    public String getExtension() {
        return extension;
    }

    public void setExtension(String extension) {
        this.extension = extension;
    }

    public Long getFileSize() {
        return fileSize;
    }

    public void setFileSize(Long fileSize) {
        this.fileSize = fileSize;
    }

    public String getAuthor() {
        return author;
    }

    public void setAuthor(String author) {
        this.author = author;
    }

    public LabelValueBean<String> getEntity() {
        return entity;
    }

    public void setEntity(LabelValueBean<String> entity) {
        this.entity = entity;
    }

    public LabelValueBean<String> getBrand() {
        return brand;
    }

    public void setBrand(LabelValueBean<String> brand) {
        this.brand = brand;
    }

    public LabelValueBean<String> getProduct() {
        return product;
    }

    public void setProduct(LabelValueBean<String> product) {
        this.product = product;
    }

    public LabelValueBean<String> getCollection() {
        return collection;
    }

    public void setCollection(LabelValueBean<String> collection) {
        this.collection = collection;
    }

    public LabelValueBean<String> getSubCollection() {
        return subCollection;
    }

    public void setSubCollection(LabelValueBean<String> subCollection) {
        this.subCollection = subCollection;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public LabelValueBean<String> getProgram() {
        return program;
    }

    public void setProgram(LabelValueBean<String> program) {
        this.program = program;
    }

    public String getVintage() {
        return vintage;
    }

    public void setVintage(String vintage) {
        this.vintage = vintage;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public String getRestrictedZone() {
        return restrictedZone;
    }

    public void setRestrictedZone(String restrictedZone) {
        this.restrictedZone = restrictedZone;
    }

    public LabelValueBean<String> getEvent() {
        return event;
    }

    public void setEvent(LabelValueBean<String> event) {
        this.event = event;
    }

    public LabelValueBean<String> getLanguage() {
        return language;
    }

    public void setLanguage(LabelValueBean<String> language) {
        this.language = language;
    }

    public String getGeographicLocation() {
        return geographicLocation;
    }

    public void setGeographicLocation(String geographicLocation) {
        this.geographicLocation = geographicLocation;
    }

    public String getWatermark() {
        return watermark;
    }

    public void setWatermark(String watermark) {
        this.watermark = watermark;
    }

    public Integer getPageNumber() {
        return pageNumber;
    }

    public void setPageNumber(Integer pageNumber) {
        this.pageNumber = pageNumber;
    }

    public String getSummary() {
        return summary;
    }

    public void setSummary(String summary) {
        this.summary = summary;
    }

    public String getAgentName() {
        return agentName;
    }

    public void setAgentName(String agentName) {
        this.agentName = agentName;
    }

    public String getCommissionedByName() {
        return commissionedByName;
    }

    public void setCommissionedByName(String commissionedByName) {
        this.commissionedByName = commissionedByName;
    }

    public String getCommissionedByDepartment() {
        return commissionedByDepartment;
    }

    public void setCommissionedByDepartment(String commissionedByDepartment) {
        this.commissionedByDepartment = commissionedByDepartment;
    }

    public LabelValueBean<Integer> getBestOf() {
        return bestOf;
    }

    public void setBestOf(LabelValueBean<Integer> bestOf) {
        this.bestOf = bestOf;
    }

    public String getMediaLocation() {
        return mediaLocation;
    }

    public void setMediaLocation(String mediaLocation) {
        this.mediaLocation = mediaLocation;
    }

    public LabelValueBean<Integer> getFullRights() {
        return fullRights;
    }

    public void setFullRights(LabelValueBean<Integer> fullRights) {
        this.fullRights = fullRights;
    }

    public LabelValueBean<String> getMediaUsage() {
        return mediaUsage;
    }

    public void setMediaUsage(LabelValueBean<String> mediaUsage) {
        this.mediaUsage = mediaUsage;
    }

    public Date getRightsEndDate() {
        return rightsEndDate;
    }

    public void setRightsEndDate(Date rightsEndDate) {
        this.rightsEndDate = rightsEndDate;
    }

    public String getGeographicRights() {
        return geographicRights;
    }

    public void setGeographicRights(String geographicRights) {
        this.geographicRights = geographicRights;
    }

    public LabelValueBean<Integer> getEvinConformity() {
        return evinConformity;
    }

    public void setEvinConformity(LabelValueBean<Integer> evinConformity) {
        this.evinConformity = evinConformity;
    }

    public String getContactReference() {
        return contactReference;
    }

    public void setContactReference(String contactReference) {
        this.contactReference = contactReference;
    }

    public LabelValueBean<String> getPublicationScope() {
        return publicationScope;
    }

    public void setPublicationScope(LabelValueBean<String> publicationScope) {
        this.publicationScope = publicationScope;
    }

    public String getRightsComment() {
        return rightsComment;
    }

    public void setRightsComment(String rightsComment) {
        this.rightsComment = rightsComment;
    }
}

和

Content
：

public class Content implements Serializable {

    private static final long serialVersionUID = 2999449587418137835L;

    private Boolean selected;
    private Boolean renditionInfoFetched;

    private String searchPageImageRendition;
    private String detailPageImageRendition;

    private String videoRendition;

    private Integer id;
    private String docName;
    private String docType;
    private String docTitle;
    private String docAuthor;
    private String securityGroup;
    private String docAccount;
    private Integer revLabel;
    private String profile;

    private Date createDate;
    private Date inDate;

    private String originalName;
    private String format;
    private String extension;
    private Long fileSize;

    private String author;

    private LabelValueBean<String> entity;
    private LabelValueBean<String> brand;
    private LabelValueBean<String> product;
    private LabelValueBean<String> collection;
    private LabelValueBean<String> subCollection;

    private String description;
    private LabelValueBean<String> program;
    private String vintage;
    private String model;
    private String restrictedZone;
    private LabelValueBean<String> event;
    private LabelValueBean<String> language;
    private String geographicLocation;
    private String watermark;
    private Integer pageNumber;
    private String summary;
    private String agentName;
    private String commissionedByName;
    private String commissionedByDepartment;
    private LabelValueBean<Integer> bestOf;
    private String mediaLocation;

    private LabelValueBean<Integer> fullRights;
    private LabelValueBean<String> mediaUsage;
    private Date rightsEndDate;
    private String geographicRights;
    private LabelValueBean<Integer> evinConformity;
    private String contactReference;
    private LabelValueBean<String> publicationScope;
    private String rightsComment;

    public Boolean getSelected() {
        return selected;
    }

    public void setSelected(Boolean selected) {
        this.selected = selected;
    }

    public Boolean getRenditionInfoFetched() {
        return renditionInfoFetched;
    }

    public void setRenditionInfoFetched(Boolean renditionInfoFetched) {
        this.renditionInfoFetched = renditionInfoFetched;
    }

    public String getSearchPageImageRendition() {
        return searchPageImageRendition;
    }

    public void setSearchPageImageRendition(String searchPageImageRendition) {
        this.searchPageImageRendition = searchPageImageRendition;
    }

    public String getDetailPageImageRendition() {
        return detailPageImageRendition;
    }

    public void setDetailPageImageRendition(String detailPageImageRendition) {
        this.detailPageImageRendition = detailPageImageRendition;
    }

    public String getVideoRendition() {
        return videoRendition;
    }

    public void setVideoRendition(String videoRendition) {
        this.videoRendition = videoRendition;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getDocName() {
        return docName;
    }

    public void setDocName(String docName) {
        this.docName = docName;
    }

    public String getDocType() {
        return docType;
    }

    public void setDocType(String docType) {
        this.docType = docType;
    }

    public String getDocTitle() {
        return docTitle;
    }

    public void setDocTitle(String docTitle) {
        this.docTitle = docTitle;
    }

    public String getDocAuthor() {
        return docAuthor;
    }

    public void setDocAuthor(String docAuthor) {
        this.docAuthor = docAuthor;
    }

    public String getSecurityGroup() {
        return securityGroup;
    }

    public void setSecurityGroup(String securityGroup) {
        this.securityGroup = securityGroup;
    }

    public String getDocAccount() {
        return docAccount;
    }

    public void setDocAccount(String docAccount) {
        this.docAccount = docAccount;
    }

    public Integer getRevLabel() {
        return revLabel;
    }

    public void setRevLabel(Integer revLabel) {
        this.revLabel = revLabel;
    }

    public String getProfile() {
        return profile;
    }

    public void setProfile(String profile) {
        this.profile = profile;
    }

    public Date getCreateDate() {
        return createDate;
    }

    public void setCreateDate(Date createDate) {
        this.createDate = createDate;
    }

    public Date getInDate() {
        return inDate;
    }

    public void setInDate(Date inDate) {
        this.inDate = inDate;
    }

    public String getOriginalName() {
        return originalName;
    }

    public void setOriginalName(String originalName) {
        this.originalName = originalName;
    }

    public String getFormat() {
        return format;
    }

    public void setFormat(String format) {
        this.format = format;
    }

    public String getExtension() {
        return extension;
    }

    public void setExtension(String extension) {
        this.extension = extension;
    }

    public Long getFileSize() {
        return fileSize;
    }

    public void setFileSize(Long fileSize) {
        this.fileSize = fileSize;
    }

    public String getAuthor() {
        return author;
    }

    public void setAuthor(String author) {
        this.author = author;
    }

    public LabelValueBean<String> getEntity() {
        return entity;
    }

    public void setEntity(LabelValueBean<String> entity) {
        this.entity = entity;
    }

    public LabelValueBean<String> getBrand() {
        return brand;
    }

    public void setBrand(LabelValueBean<String> brand) {
        this.brand = brand;
    }

    public LabelValueBean<String> getProduct() {
        return product;
    }

    public void setProduct(LabelValueBean<String> product) {
        this.product = product;
    }

    public LabelValueBean<String> getCollection() {
        return collection;
    }

    public void setCollection(LabelValueBean<String> collection) {
        this.collection = collection;
    }

    public LabelValueBean<String> getSubCollection() {
        return subCollection;
    }

    public void setSubCollection(LabelValueBean<String> subCollection) {
        this.subCollection = subCollection;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public LabelValueBean<String> getProgram() {
        return program;
    }

    public void setProgram(LabelValueBean<String> program) {
        this.program = program;
    }

    public String getVintage() {
        return vintage;
    }

    public void setVintage(String vintage) {
        this.vintage = vintage;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public String getRestrictedZone() {
        return restrictedZone;
    }

    public void setRestrictedZone(String restrictedZone) {
        this.restrictedZone = restrictedZone;
    }

    public LabelValueBean<String> getEvent() {
        return event;
    }

    public void setEvent(LabelValueBean<String> event) {
        this.event = event;
    }

    public LabelValueBean<String> getLanguage() {
        return language;
    }

    public void setLanguage(LabelValueBean<String> language) {
        this.language = language;
    }

    public String getGeographicLocation() {
        return geographicLocation;
    }

    public void setGeographicLocation(String geographicLocation) {
        this.geographicLocation = geographicLocation;
    }

    public String getWatermark() {
        return watermark;
    }

    public void setWatermark(String watermark) {
        this.watermark = watermark;
    }

    public Integer getPageNumber() {
        return pageNumber;
    }

    public void setPageNumber(Integer pageNumber) {
        this.pageNumber = pageNumber;
    }

    public String getSummary() {
        return summary;
    }

    public void setSummary(String summary) {
        this.summary = summary;
    }

    public String getAgentName() {
        return agentName;
    }

    public void setAgentName(String agentName) {
        this.agentName = agentName;
    }

    public String getCommissionedByName() {
        return commissionedByName;
    }

    public void setCommissionedByName(String commissionedByName) {
        this.commissionedByName = commissionedByName;
    }

    public String getCommissionedByDepartment() {
        return commissionedByDepartment;
    }

    public void setCommissionedByDepartment(String commissionedByDepartment) {
        this.commissionedByDepartment = commissionedByDepartment;
    }

    public LabelValueBean<Integer> getBestOf() {
        return bestOf;
    }

    public void setBestOf(LabelValueBean<Integer> bestOf) {
        this.bestOf = bestOf;
    }

    public String getMediaLocation() {
        return mediaLocation;
    }

    public void setMediaLocation(String mediaLocation) {
        this.mediaLocation = mediaLocation;
    }

    public LabelValueBean<Integer> getFullRights() {
        return fullRights;
    }

    public void setFullRights(LabelValueBean<Integer> fullRights) {
        this.fullRights = fullRights;
    }

    public LabelValueBean<String> getMediaUsage() {
        return mediaUsage;
    }

    public void setMediaUsage(LabelValueBean<String> mediaUsage) {
        this.mediaUsage = mediaUsage;
    }

    public Date getRightsEndDate() {
        return rightsEndDate;
    }

    public void setRightsEndDate(Date rightsEndDate) {
        this.rightsEndDate = rightsEndDate;
    }

    public String getGeographicRights() {
        return geographicRights;
    }

    public void setGeographicRights(String geographicRights) {
        this.geographicRights = geographicRights;
    }

    public LabelValueBean<Integer> getEvinConformity() {
        return evinConformity;
    }

    public void setEvinConformity(LabelValueBean<Integer> evinConformity) {
        this.evinConformity = evinConformity;
    }

    public String getContactReference() {
        return contactReference;
    }

    public void setContactReference(String contactReference) {
        this.contactReference = contactReference;
    }

    public LabelValueBean<String> getPublicationScope() {
        return publicationScope;
    }

    public void setPublicationScope(LabelValueBean<String> publicationScope) {
        this.publicationScope = publicationScope;
    }

    public String getRightsComment() {
        return rightsComment;
    }

    public void setRightsComment(String rightsComment) {
        this.rightsComment = rightsComment;
    }
}

我正在尝试将属性从 

SearchContent
复制到 
Content
，如下所示：

Content content = new Content();        
Converter converter = new DateConverter(null);
BeanUtilsBean beanUtilsBean = BeanUtilsBean.getInstance();
beanUtilsBean.getConvertUtils().register(converter, Date.class);        
BeanUtils.copyProperties(searchContent, content);

System.out.println(searchContent);
System.out.println(content);


Sysout
正在打印：

com.mhis.dam.service.search.bean.SearchContent[id=52906,docName=MHIS043570,docType=Images,docTitle=preview_1_8,docAuthor=sysadmin,securityGroup=Internal,docAccount=WF/017/DAM/000,revLabel=1,profile=DAMMedia,workflowStage=com.mhis.dam.generic.bean.LabelValueBean[label=Published,value=published],createDate=Fri Oct 18 15:30:35 IST 2013,inDate=Fri Oct 18 15:30:35 IST 2013,originalName=Vintage 2004 Gift Box & Bottle Black - hires.jpg,format=image/jpeg,extension=jpg,fileSize=2106898,author=Arjan,entity=com.mhis.dam.generic.bean.LabelValueBean[label=Dom Perignon,value=WF/017/DAM],brand=com.mhis.dam.generic.bean.LabelValueBean[label=Dom Perignon,value=WF/017/DAM/001],product=com.mhis.dam.generic.bean.LabelValueBean[label=Blanc,value=17_1_blanc],collection=com.mhis.dam.generic.bean.LabelValueBean[label=Pack shot,value=pack_shot_dp],subCollection=com.mhis.dam.generic.bean.LabelValueBean[label=Bottle shot,value=ps_bottle_dp],description=preview_1,program=com.mhis.dam.generic.bean.LabelValueBean[label=<null>,value=],vintage=,model=,restrictedZone=,event=com.mhis.dam.generic.bean.LabelValueBean[label=<null>,value=],language=com.mhis.dam.generic.bean.LabelValueBean[label=<null>,value=],geographicLocation=,watermark=,pageNumber=0,summary=,agentName=,commissionedByName=Nicolas,commissionedByDepartment=,bestOf=com.mhis.dam.generic.bean.LabelValueBean[label=<null>,value=0],mediaLocation=,fullRights=com.mhis.dam.generic.bean.LabelValueBean[label=<null>,value=1],mediaUsage=com.mhis.dam.generic.bean.LabelValueBean[label=<null>,value=],rightsEndDate=<null>,geographicRights=,evinConformity=com.mhis.dam.generic.bean.LabelValueBean[label=<null>,value=2],contactReference=,publicationScope=com.mhis.dam.generic.bean.LabelValueBean[label=Full public usage,value=fullPublic],rightsComment=]
com.mhis.dam.web.model.Content[selected=<null>,renditionInfoFetched=<null>,searchPageImageRendition=<null>,detailPageImageRendition=<null>,videoRendition=<null>,id=<null>,docName=<null>,docType=<null>,docTitle=<null>,docAuthor=<null>,securityGroup=<null>,docAccount=<null>,revLabel=<null>,profile=<null>,createDate=<null>,inDate=<null>,originalName=<null>,format=<null>,extension=<null>,fileSize=<null>,author=<null>,entity=<null>,brand=<null>,product=<null>,collection=<null>,subCollection=<null>,description=<null>,program=<null>,vintage=<null>,model=<null>,restrictedZone=<null>,event=<null>,language=<null>,geographicLocation=<null>,watermark=<null>,pageNumber=<null>,summary=<null>,agentName=<null>,commissionedByName=<null>,commissionedByDepartment=<null>,bestOf=<null>,mediaLocation=<null>,fullRights=<null>,mediaUsage=<null>,rightsEndDate=<null>,geographicRights=<null>,evinConformity=<null>,contactReference=<null>,publicationScope=<null>,rightsComment=<null>]

很明显，

selected
类的
renditionInfoFetched
和
Content
字段具有空值，因为它们不存在于
SearchContent
中，但您可以看到
Content
的所有其他属性都是空的。我找不到我做错了什么！

任何指针都会非常有帮助。

java properties apache-commons-beanutils
4个回答
63
投票

Java中有两个BeanUtils.copyProperties(parameter1,parameter2)。

一个是

org.apache.commons.beanutils.BeanUtils.copyProperties(对象目标， 对象原点）

另一个是

org.springframework.beans.BeanUtils.copyProperties(对象源， 物体目标）

注意参数的相反位置。

45
投票

如果你想从searchContent复制到content，那么代码应该如下

BeanUtils.copyProperties(content, searchContent);

您需要在代码中反转上述参数。

来自API，

public static void copyProperties(Object dest, Object orig)
                           throws IllegalAccessException,
                                  InvocationTargetException)

参数：

dest - 属性被修改的目标 bean

orig - 检索其属性的原始 bean

0
投票

Estou com o mesmo Problema。 Usando BeanUtils do springframework para psssar de itemDto para item

控制台结果。

ItemDto [codigo=123，descricao=teste，unidade=und]

项目 [id=null, codigo=null, descricao=null, unidade=null]

Já inverti e não resolvi

`@PostMapping("/item")
    public ResponseEntity<Item> saveItem(@RequestBody @Valid ItemDto itemdto)  {
        var item = new Item();
        BeanUtils.copyProperties(itemdto, item);
        System.out.println(itemdto.toString());
        System.out.println(item.toString());
        return ResponseEntity.status(HttpStatus.CREATED).body(itemRepository.save(item));
    }`
-1
投票

正如您在下面的源代码中看到的，BeanUtils.copyProperties 内部使用反射，并且还有额外的内部缓存查找步骤，这将增加性能成本

 private static void copyProperties(Object source, Object target, @Nullable Class<?> editable,
                @Nullable String... ignoreProperties) throws BeansException {

            Assert.notNull(source, "Source must not be null");
            Assert.notNull(target, "Target must not be null");

            Class<?> actualEditable = target.getClass();
            if (editable != null) {
                if (!editable.isInstance(target)) {
                    throw new IllegalArgumentException("Target class [" + target.getClass().getName() +
                            "] not assignable to Editable class [" + editable.getName() + "]");
                }
                actualEditable = editable;
            }
            **PropertyDescriptor[] targetPds = getPropertyDescriptors(actualEditable);**
            List<String> ignoreList = (ignoreProperties != null ? Arrays.asList(ignoreProperties) : null);

            for (PropertyDescriptor targetPd : targetPds) {
                Method writeMethod = targetPd.getWriteMethod();
                if (writeMethod != null && (ignoreList == null || !ignoreList.contains(targetPd.getName()))) {
                    PropertyDescriptor sourcePd = getPropertyDescriptor(source.getClass(), targetPd.getName());
                    if (sourcePd != null) {
                        Method readMethod = sourcePd.getReadMethod();
                        if (readMethod != null &&
                                ClassUtils.isAssignable(writeMethod.getParameterTypes()[0], readMethod.getReturnType())) {
                            try {
                                if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) {
                                    readMethod.setAccessible(true);
                                }
                                Object value = readMethod.invoke(source);
                                if (!Modifier.isPublic(writeMethod.getDeclaringClass().getModifiers())) {
                                    writeMethod.setAccessible(true);
                                }
                                writeMethod.invoke(target, value);
                            }
                            catch (Throwable ex) {
                                throw new FatalBeanException(
                                        "Could not copy property '" + targetPd.getName() + "' from source to target", ex);
                            }
                        }
                    }
                }
            }
        }

因此考虑到成本反射，最好使用普通设置器

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