How to use BeanUtils copyProperties

Question

I am trying to copy properties from one bean to another  Here are the signature of two beans   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 lt String gt  workflowStage       private Date createDate      private Date inDate       private String originalName      private String format      private String extension      private Long fileSize       private String author       private LabelValueBean lt String gt  entity      private LabelValueBean lt String gt  brand      private LabelValueBean lt String gt  product      private LabelValueBean lt String gt  collection      private LabelValueBean lt String gt  subCollection       private String description      private LabelValueBean lt String gt  program      private String vintage      private String model      private String restrictedZone      private LabelValueBean lt String gt  event      private LabelValueBean lt String gt  language      private String geographicLocation      private String watermark      private Integer pageNumber      private String summary      private String agentName      private String commissionedByName      private String commissionedByDepartment      private LabelValueBean lt Integer gt  bestOf      private String mediaLocation       private LabelValueBean lt Integer gt  fullRights      private LabelValueBean lt String gt  mediaUsage      private Date rightsEndDate      private String geographicRights      private LabelValueBean lt Integer gt  evinConformity      private String contactReference      private LabelValueBean lt String gt  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 lt String gt  getWorkflowStage             return workflowStage             public void setWorkflowStage LabelValueBean lt String gt  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 lt String gt  getEntity             return entity             public void setEntity LabelValueBean lt String gt  entity            this entity   entity             public LabelValueBean lt String gt  getBrand             return brand             public void setBrand LabelValueBean lt String gt  brand            this brand   brand             public LabelValueBean lt String gt  getProduct             return product             public void setProduct LabelValueBean lt String gt  product            this product   product             public LabelValueBean lt String gt  getCollection             return collection             public void setCollection LabelValueBean lt String gt  collection            this collection   collection             public LabelValueBean lt String gt  getSubCollection             return subCollection             public void setSubCollection LabelValueBean lt String gt  subCollection            this subCollection   subCollection             public String getDescription             return description             public void setDescription String description            this description   description             public LabelValueBean lt String gt  getProgram             return program             public void setProgram LabelValueBean lt String gt  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 lt String gt  getEvent             return event             public void setEvent LabelValueBean lt String gt  event            this event   event             public LabelValueBean lt String gt  getLanguage             return language             public void setLanguage LabelValueBean lt String gt  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 lt Integer gt  getBestOf             return bestOf             public void setBestOf LabelValueBean lt Integer gt  bestOf            this bestOf   bestOf             public String getMediaLocation             return mediaLocation             public void setMediaLocation String mediaLocation            this mediaLocation   mediaLocation             public LabelValueBean lt Integer gt  getFullRights             return fullRights             public void setFullRights LabelValueBean lt Integer gt  fullRights            this fullRights   fullRights             public LabelValueBean lt String gt  getMediaUsage             return mediaUsage             public void setMediaUsage LabelValueBean lt String gt  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 lt Integer gt  getEvinConformity             return evinConformity             public void setEvinConformity LabelValueBean lt Integer gt  evinConformity            this evinConformity   evinConformity             public String getContactReference             return contactReference             public void setContactReference String contactReference            this contactReference   contactReference             public LabelValueBean lt String gt  getPublicationScope             return publicationScope             public void setPublicationScope LabelValueBean lt String gt  publicationScope            this publicationScope   publicationScope             public String getRightsComment             return rightsComment             public void setRightsComment String rightsComment            this rightsComment   rightsComment            And 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 lt String gt  entity      private LabelValueBean lt String gt  brand      private LabelValueBean lt String gt  product      private LabelValueBean lt String gt  collection      private LabelValueBean lt String gt  subCollection       private String description      private LabelValueBean lt String gt  program      private String vintage      private String model      private String restrictedZone      private LabelValueBean lt String gt  event      private LabelValueBean lt String gt  language      private String geographicLocation      private String watermark      private Integer pageNumber      private String summary      private String agentName      private String commissionedByName      private String commissionedByDepartment      private LabelValueBean lt Integer gt  bestOf      private String mediaLocation       private LabelValueBean lt Integer gt  fullRights      private LabelValueBean lt String gt  mediaUsage      private Date rightsEndDate      private String geographicRights      private LabelValueBean lt Integer gt  evinConformity      private String contactReference      private LabelValueBean lt String gt  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 lt String gt  getEntity             return entity             public void setEntity LabelValueBean lt String gt  entity            this entity   entity             public LabelValueBean lt String gt  getBrand             return brand             public void setBrand LabelValueBean lt String gt  brand            this brand   brand             public LabelValueBean lt String gt  getProduct             return product             public void setProduct LabelValueBean lt String gt  product            this product   product             public LabelValueBean lt String gt  getCollection             return collection             public void setCollection LabelValueBean lt String gt  collection            this collection   collection             public LabelValueBean lt String gt  getSubCollection             return subCollection             public void setSubCollection LabelValueBean lt String gt  subCollection            this subCollection   subCollection             public String getDescription             return description             public void setDescription String description            this description   description             public LabelValueBean lt String gt  getProgram             return program             public void setProgram LabelValueBean lt String gt  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 lt String gt  getEvent             return event             public void setEvent LabelValueBean lt String gt  event            this event   event             public LabelValueBean lt String gt  getLanguage             return language             public void setLanguage LabelValueBean lt String gt  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 lt Integer gt  getBestOf             return bestOf             public void setBestOf LabelValueBean lt Integer gt  bestOf            this bestOf   bestOf             public String getMediaLocation             return mediaLocation             public void setMediaLocation String mediaLocation            this mediaLocation   mediaLocation             public LabelValueBean lt Integer gt  getFullRights             return fullRights             public void setFullRights LabelValueBean lt Integer gt  fullRights            this fullRights   fullRights             public LabelValueBean lt String gt  getMediaUsage             return mediaUsage             public void setMediaUsage LabelValueBean lt String gt  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 lt Integer gt  getEvinConformity             return evinConformity             public void setEvinConformity LabelValueBean lt Integer gt  evinConformity            this evinConformity   evinConformity             public String getContactReference             return contactReference             public void setContactReference String contactReference            this contactReference   contactReference             public LabelValueBean lt String gt  getPublicationScope             return publicationScope             public void setPublicationScope LabelValueBean lt String gt  publicationScope            this publicationScope   publicationScope             public String getRightsComment             return rightsComment             public void setRightsComment String rightsComment            this rightsComment   rightsComment            I am trying to copy properties from SearchContent to Content as   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     The Sysout is printing   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  amp  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  lt null gt  value   vintage  model  restrictedZone  event com mhis dam generic bean LabelValueBean label  lt null gt  value   language com mhis dam generic bean LabelValueBean label  lt null gt  value   geographicLocation  watermark  pageNumber 0 summary  agentName  commissionedByName Nicolas commissionedByDepartment  bestOf com mhis dam generic bean LabelValueBean label  lt null gt  value 0  mediaLocation  fullRights com mhis dam generic bean LabelValueBean label  lt null gt  value 1  mediaUsage com mhis dam generic bean LabelValueBean label  lt null gt  value   rightsEndDate  lt null gt  geographicRights  evinConformity com mhis dam generic bean LabelValueBean label  lt null gt  value 2  contactReference  publicationScope com mhis dam generic bean LabelValueBean label Full public usage value fullPublic  rightsComment   com mhis dam web model Content selected  lt null gt  renditionInfoFetched  lt null gt  searchPageImageRendition  lt null gt  detailPageImageRendition  lt null gt  videoRendition  lt null gt  id  lt null gt  docName  lt null gt  docType  lt null gt  docTitle  lt null gt  docAuthor  lt null gt  securityGroup  lt null gt  docAccount  lt null gt  revLabel  lt null gt  profile  lt null gt  createDate  lt null gt  inDate  lt null gt  originalName  lt null gt  format  lt null gt  extension  lt null gt  fileSize  lt null gt  author  lt null gt  entity  lt null gt  brand  lt null gt  product  lt null gt  collection  lt null gt  subCollection  lt null gt  description  lt null gt  program  lt null gt  vintage  lt null gt  model  lt null gt  restrictedZone  lt null gt  event  lt null gt  language  lt null gt  geographicLocation  lt null gt  watermark  lt null gt  pageNumber  lt null gt  summary  lt null gt  agentName  lt null gt  commissionedByName  lt null gt  commissionedByDepartment  lt null gt  bestOf  lt null gt  mediaLocation  lt null gt  fullRights  lt null gt  mediaUsage  lt null gt  rightsEndDate  lt null gt  geographicRights  lt null gt  evinConformity  lt null gt  contactReference  lt null gt  publicationScope  lt null gt  rightsComment  lt null gt     It is obvious to have null values for selected and renditionInfoFetched fields of the class Content  since they are not present in SearchContent but you can see all the other properties of Content is null  I am unable to find what I am doing wrong   Any pointer would be very helpful

User · Answer

There are two BeanUtils copyProperties parameter1  parameter2  in Java   One is      org apache commons beanutils BeanUtils copyProperties Object dest    Object orig    Another is     org springframework beans BeanUtils copyProperties Object source    Object target    Pay attention to the opposite position of parameters

User · Answer

If you want to copy from searchContent to content  then code should be as follows  BeanUtils copyProperties content  searchContent     You need to reverse the parameters as above in your code   From API   public static void copyProperties Object dest  Object orig                             throws IllegalAccessException                                    InvocationTargetException    Parameters      dest - Destination bean whose properties are modified      orig - Origin bean whose properties are retrieved

User · Answer

As you can see in the below source code  BeanUtils copyProperties internally uses reflection and there s additional internal cache lookup steps as well which is going to add cost wrt performance       private static void copyProperties Object source  Object target   Nullable Class lt   gt  editable                   Nullable String    ignoreProperties  throws BeansException                Assert notNull source   Source must not be null                Assert notNull target   Target must not be null                 Class lt   gt  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 lt String gt  ignoreList    ignoreProperties    null   Arrays asList ignoreProperties    null                for  PropertyDescriptor targetPd   targetPds                    Method writeMethod   targetPd getWriteMethod                    if  writeMethod    null  amp  amp   ignoreList    null     ignoreList contains targetPd getName                            PropertyDescriptor sourcePd   getPropertyDescriptor source getClass    targetPd getName                         if  sourcePd    null                            Method readMethod   sourcePd getReadMethod                            if  readMethod    null  amp  amp                                  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                                                                                                                             So it s better to use plain setters given the cost reflection

[java] How to use BeanUtils.copyProperties?

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