Jaxb Class has two properties of the same name

Question

with jaxb  i try to read an xml file only a few element in xml file are interesting  so i would like to skip many element  xml content  xml i try to read   lt  xml version  1 0  encoding  UTF-8   gt   lt  --Sample XML file generated by XMLSpy v2010 rel  3 sp1  http   www altova com -- gt   lt flx ModeleREP xsi schemaLocation  urn test mod rep xsd mod rep xsd  xmlns xsi  http   www w3 org 2001 XMLSchema-instance  xmlns flx  urn test mod rep xsd  gt   lt flx DocumentHeader gt       lt flx Identification v  04489   gt   lt  flx DocumentHeader gt   lt flx TimeSeries gt       lt flx Identification v  test1a   gt       lt flx BusinessType v  A01   gt       lt flx Product v  123a   gt       lt flx ResourceObject codingScheme  N  v  testa   gt       lt flx Period gt           lt flx TimeInterval v  2011-07-02T00 00 2011-07-16T00 00   gt           lt flx Resolution v  PT2H   gt           lt flx Pt gt               lt flx P v  1   gt               lt flx Q unitCode  String  v  1 0   gt               lt flx A currencyIdentifier  String  v  195 0   gt           lt  flx Pt gt       lt  flx Period gt   lt  flx TimeSeries gt   lt flx TimeSeries gt       lt flx Identification v  test2a   gt       lt flx BusinessType v  A01   gt       lt flx Product v  a123b   gt       lt flx ResourceObject codingScheme  N  v  test2   gt       lt flx Period gt           lt flx TimeInterval v  2011-07-02T00 00 2011-07-16T00 00   gt           lt flx Resolution v  PT2H   gt           lt flx Pt gt               lt flx P v  1   gt               lt flx Q unitCode  String  v  1 0   gt               lt flx A currencyIdentifier  String  v  195 0   gt           lt  flx Pt gt           lt flx Pt gt               lt flx P v  2   gt               lt flx Q unitCode  String  v  1 0   gt               lt flx A currencyIdentifier  String  v  195 0   gt           lt  flx Pt gt       lt  flx Period gt   lt  flx TimeSeries gt   lt  flx ModeleREP gt    my class   XmlRootElement name  ModeleREP   namespace  urn test mod rep xsd   public class ModeleREP       XmlElement name  TimeSeries     protected List lt TimeSeries gt  timeSeries     public List lt TimeSeries gt  getTimeSeries       if  this timeSeries    null          this timeSeries   new ArrayList lt TimeSeries gt           return this timeSeries         public void setTimeSeries List lt TimeSeries gt  timeSeries      this timeSeries   timeSeries           XmlAccessorType XmlAccessType FIELD   XmlRootElement name    TimeSeries   public class TimeSeries     XmlElement name  ResourceObject   protected RessourceObject resourceObject    XmlElement name    Period   protected Period period   public RessourceObject getResourceObject         return this resourceObject     public void setResourceObject RessourceObject resourceObject        this resourceObject   resourceObject     public Period getPeriod         return this period     public void setPeriod Period period        this period   period         XmlAccessorType XmlAccessType FIELD   XmlRootElement name    ResourceObject    public class RessourceObject    XmlAttribute name    codingScheme   protected String codingScheme    XmlAttribute name    v   protected String v   public String getCodingScheme         return this codingScheme     public void setCodingScheme String codingScheme        this codingScheme   codingScheme     public String getV         return this v     public void setV String v        this v   v        XmlAccessorType XmlAccessType NONE   XmlRootElement name    Period   public class Period     XmlElement name    TimeInterval   protected TimeInterval timeInterval    XmlElement name    Pt   protected List lt Pt gt  pt   public TimeInterval getTimeInterval         return this timeInterval     public void setTimeInterval TimeInterval timeInterval        this timeInterval   timeInterval     public List lt Pt gt  getPt         if  this pt    null        this pt   new ArrayList lt Pt gt               return this pt     public void setPt List lt Pt gt  pt        this pt pt         XmlAccessorType XmlAccessType FIELD   XmlRootElement name    TimeInterval   public class TimeInterval     XmlAttribute name    v   private String timeIntervalPeriod   public String getTimeIntervalPeriod         return this timeIntervalPeriod     public void setTimeIntervalPeriod String timeIntervalPeriod        this timeIntervalPeriod   timeIntervalPeriod         XmlAccessorType XmlAccessType FIELD   XmlRootElement name    Pt   public class Pt     XmlElement name    P   protected P p    XmlElement name    A   protected A a   public P getP         return this p     public void setP P p        this p   p     public A getA         return this a     public void setA A a        this a   a        XmlAccessorType XmlAccessType FIELD   XmlRootElement name    P   public class P    XmlAttribute name    v   protected String position    public String getPosition        return this position     public void setPosition String position       this position position        XmlAccessorType XmlAccessType FIELD   XmlRootElement name    A   public class A    XmlAttribute name    v   protected String calculatedAmount   public String getCalculatedAmount         return this calculatedAmount     public void setCalculatedAmount String calculatedAmount        this calculatedAmount   calculatedAmount        when i try to read the xlm file i get i get  com sun xml internal bind v2 runtime IllegalAnnotationsException  1 counts of IllegalAnnotationExceptions Class has two properties of the same name  timeSeries      this problem is related to the following location          at public java util List testjaxp ModeleREP getTimeSeries           at testjaxp ModeleREP     this problem is related to the following location          at protected java util List testjaxp ModeleREP timeSeries         at testjaxp ModeleREP   i don t understand this error  edit  i use jaxb-impl-2 1 12  ok now i don t have any error  but when i check my object  timeSeries is null     so maybe jaxb seem to have problem with flx

User · Answer

I had a service class with signature as below"

@WebMethod
public FetchIQAStatusResponseVO fetchIQAStatus(FetchIQAStatusRequest fetchIQAStatusRequest) {

On run I got the same error for FetchIQAStatusResponseVO fields. I just added a line on top of FetchIQAStatusResponseVO:

@XmlAccessorType(XmlAccessType.FIELD) //This line added
public class FetchIQAStatusResponseVO {

and this resolved the issue.

User · Answer

Same problem I faced  I added    XmlRootElement name  yourRootElementName     XmlAccessorType XmlAccessType FIELD    and now it is working

User · Answer

You need to configure class ModeleREP as well with  XmlAccessorType XmlAccessType FIELD  as you did with class TimeSeries   Have al look at OOXS

User · Answer

It will work when you put your annotation before the getters  and remove it from the protected attributes   protected String codingScheme    XmlAttribute name    codingScheme   public String getCodingScheme         return this codingScheme

User · Answer

I ve just run into this problem and solved it    The source of the problem is that you have both XmlAccessType FIELD and pairs of getters and setters  The solution is to remove setters and add a default constructor and a constructor that takes all fields

User · Answer

If we use the below annotations and remove the   XmlElement  annotation  code should work properly and resultant XML would have the element names similar to the class member    XmlRootElement name   lt RootElementName gt     XmlAccessorType XmlAccessType FIELD    In case use of   XmlElement  is really required  please define it as field level and code should work perfectly  Don t define the annotation on the top of getter method   Had tried both the above approaches mentioned and got to fix the issue

User · Answer

I did trial and error and got the conclusion that  you only have to use either of both  XMLElement or  XmlAccessorType XmlAccessType FIELD    When to use which   case 1   If your field names and element name you want to use in xml file are different then you have to use  XMLElement name  elementName    As this will bind fields with that element name and display in XML file   case 2   If fields names and respective element name in xml both are same then you can simply use  XmlAccessorType XmlAccessType FIELD

User · Answer

Your JAXB is looking at both the getTimeSeries   method and the member timeSeries  You don t say which JAXB implementation you re using  or its configuration  but the exception is fairly clear      at public java util List testjaxp ModeleREP getTimeSeries     and      at protected java util List testjaxp ModeleREP timeSeries   You need to configure you JAXB stuff to use annotations  as per your  XmlElement name  TimeSeries    and ignore public methods

User · Answer

I ve also seen some similiar issues like this    I think  it s because of the place where we use the   XMLElement  annotation in the  bean  class   And I think  the JAXB  annotation processor  considers the member field  amp  getter method of the same field element as different properties  when we use the   XMLElement annotation at the field level and throws the IllegalAnnotationExceptions exception   Exception Message       Class has two properties of the same name  timeSeries    At Getter Method         at public java util List testjaxp ModeleREP getTimeSeries      At Member Field         at protected java util List testjaxp ModeleREP timeSeries    Solution   Instead of using  XmlElement in the field  use it in the getter method

User · Answer

I also faced problem like this and i set this    XmlRootElement name  yourRootElementName    XmlAccessorType XmlAccessType FIELD    This will work 100

User · Answer

ModeleREP getTimeSeries   have to be with  Transient annotation  That would help

User · Answer

There are multiple solutions but basicly if you annotate on variable declaration then you need  XmlAccessorType XmlAccessType FIELD   but if you prefer to annotate either a get- or set-method then you don t   So you can do    XmlRootElement name  MY CLASS A    XmlAccessorType XmlAccessType FIELD  public class MyClassA        XmlElement name    STATUS          private int status          and so on     Or    XmlRootElement name  MY CLASS A   public class MyClassA       private int status        XmlElement name    STATUS                public int getStatus

User · Answer

just added this to my class    XmlAccessorType XmlAccessType FIELD    worked like a cham

User · Answer

A quick and simple way to fix this issue is to remove the  XmlElement name  TimeSeries   from the top of the variable declaration statement protected List lt TimeSeries gt  timeSeries  to the top of its getter  public List lt TimeSeries gt  getTimeSeries     Thus your ModeleREP class will look like    XmlRootElement name  ModeleREP   namespace  urn test mod rep xsd   public class ModeleREP       protected List lt TimeSeries gt  timeSeries      XmlElement name  TimeSeries     public List lt TimeSeries gt  getTimeSeries         if  this timeSeries    null          this timeSeries   new ArrayList lt TimeSeries gt               return this timeSeries         public void setTimeSeries List lt TimeSeries gt  timeSeries        this timeSeries   timeSeries          Hope it helps

User · Answer

Many solutions have been given  and the internals are briefly touched by  Sriram and  ptomli as well  I just want to add a few references to the source code to help understand what is happening under the hood   By default  i e  no extra annotations used at all except  XmlRootElement on the root class   JABX tries to marshal things exposed via two ways    public fields getter methods that are named following the convention and have a corresponding setter method    Notice that if a field is  or method returns  null  it will not be written into the output   Now if  XmlElement is used  non-public things  could be fields or getter methods  can be marshalled as well   But the two ways  i e  fields and getter-methods  must not conflict with each other  Otherwise you get the exception

User · Answer

These are the two properties JAXB is looking at       public java util List testjaxp ModeleREP getTimeSeries       and    protected java util List testjaxp ModeleREP timeSeries   This can be avoided by using JAXB annotation at get method just like mentioned below    XmlElement name  TimeSeries      public java util List testjaxp ModeleREP getTimeSeries

User · Answer

Class has two properties of the same name exception  can happen when you have a class member x with a public access level and a getter setter for the same member   As a java rule of thumb  it is not recommended to use a public access level together with getters and setters   Check this for more details   Public property VS Private property with getter   To fix that    Change your member s access level to private and keep your getter setter Remove the member s getter and setter

User · Answer

You didn t specified what JAXB-IMPL version are you using  but once I had the same problem  with jaxb-impl 2 0 5  and solved it using the annotation at the getter level instead of using it at the member level

User · Answer

just declare the member variables to private in the class you want to convert to XML  Happy coding

User · Answer

Annotating with  XmlTransient resolves that issue   XmlTransient public void setTimeSeries List lt TimeSeries gt  timeSeries       this timeSeries   timeSeries      Look at http   docs oracle com javase 8 docs api javax xml bind annotation XmlTransient html for more details

[java] Jaxb, Class has two properties of the same name

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