JAXB提供空的XML元素爲<xmlelement/>並刪除命名空間名稱

我正在編寫一個實用程序來集成內部系統和第三方產品。我正在嘗試生成一個可以由第三方產品加載的xml文件，但我無法完全按照需要生成xml。我創建了一個僅用於測試的簡化版本。JAXB提供空的XML元素爲<xmlelement/>並刪除命名空間名稱

預期的輸出應該如下：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<Programme xmlns="http://www.awebsite.co.uk/ns/"> 
    <Editorial> 
     <SeriesTitle>Series 1</SeriesTitle> 
     <ProgrammeTitle>Test Programme</ProgrammeTitle> 
     <EpisodeTitleNumber>Episode 1</EpisodeTitleNumber> 
     <ProductionNumber/> 
     <Synopsis/> 
     <Originator/> 
     <CopyrightYear/> 
    </Editorial> 
    <Technical> 
     <ShimName/> 
     <ShimVersion>1.0</ShimVersion> 
     <ContactInformation> 
      <ContactEmail/> 
      <ContactTelephoneNumber/> 
     </ContactInformation> 
    </Technical> 
</Programme>

，我得到的輸出如下：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<ns2:Programme xmlns:ns2="http://www.awebsite.co.uk/ns/"> 
    <Editorial> 
     <SeriesTitle>Series 1</SeriesTitle> 
     <ProgrammeTitle>Test Programme</ProgrammeTitle> 
     <EpisodeTitleNumber>Episode 1</EpisodeTitleNumber> 
     <ProductionNumber xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/> 
     <Synopsis xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/> 
     <Originator xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/> 
     <CopyrightYear xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/> 
    </Editorial> 
    <Technical> 
     <ShimName xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/> 
     <ShimVersion>1.0</ShimVersion> 
     <ContactInformation> 
      <ContactEmail xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/> 
      <ContactTelephoneNumber xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"/> 
     </ContactInformation> 
    </Technical> 
</ns2:Programme>

的2個區，我不能得到正確的是具有命名空間一個賦值給它的值，並且空標籤在不添加以下情況下自關閉：xmlns：xsi =「http://www.w3.org/2001/XMLSchema-instance」xsi：nil =「true」。我試過空標籤，但他們被拒絕爲無效的XML。

我的代碼如下：

主營：

public class TestXMLBuilder { 

    public static void main (String ... args) { 
     File file = new File("myxmltest.xml"); 
     JAXBContext jaxbContext; 

     Editorial editorial = new Editorial(); 
     editorial.setProgrammeTitle("Test Programme"); 
     editorial.setEpisodeTitleNumber("Episode 1"); 
     editorial.setSeriesTitle("Series 1"); 
     Programme programme = new Programme(); 
     programme.setEditorial(editorial); 

     try { 
      jaxbContext = JAXBContext.newInstance(Programme.class); 
      Marshaller marshaller = jaxbContext.createMarshaller(); 
      // output pretty printed 
      marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); 


      marshaller.marshal(programme, file); 
      marshaller.marshal(programme, System.out); 
     } catch (JAXBException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

    } 
}

項目類別：

import javax.xml.bind.annotation.XmlAccessType; 
import javax.xml.bind.annotation.XmlAccessorType; 
import javax.xml.bind.annotation.XmlElement; 
import javax.xml.bind.annotation.XmlRootElement; 

@XmlRootElement(name = "Programme", namespace = "http://www.awebsite.co.uk/ns/") 
@XmlAccessorType(XmlAccessType.FIELD) 
public class Programme { 

    @XmlElement(name = "Editorial", required = true) 
    private Editorial editorial = new Editorial(); 

    @XmlElement(name = "Technical", required = true) 
    private Technical technical = new Technical(); 


    /** 
    * @return the editorial 
    */ 
    public Editorial getEditorial() { 
     return editorial; 
    } 

    /** 
    * @param editorial the editorial to set 
    */ 
    public void setEditorial(Editorial editorial) { 
     this.editorial = editorial; 
    } 

    /** 
    * @return the technical 
    */ 
    public Technical getTechnical() { 
     return technical; 
    } 

    /** 
    * @param technical the technical to set 
    */ 
    public void setTechnical(Technical technical) { 
     this.technical = technical; 
    } 

}

編輯類：

import javax.xml.bind.annotation.XmlAccessType; 
import javax.xml.bind.annotation.XmlAccessorType; 
import javax.xml.bind.annotation.XmlElement; 
import javax.xml.bind.annotation.XmlRootElement; 

@XmlRootElement(name = "Editorial") 
@XmlAccessorType(XmlAccessType.FIELD) 
public class Editorial { 

    @XmlElement(name = "SeriesTitle", required = true, nillable = true) 
    private String seriesTitle = null; 

    @XmlElement(name = "ProgrammeTitle", required = true, nillable = true) 
    private String programmeTitle = null; 

    @XmlElement(name = "EpisodeTitleNumber", required = true, nillable = true) 
    private String episodeTitleNumber = null; 

    @XmlElement(name = "ProductionNumber", required = true, nillable = true) 
    private String productionNumber = null; 

    @XmlElement(name = "Synopsis", required = true, nillable = true) 
    private String synopsis = null; 

    @XmlElement(name = "Originator", required = true, nillable = true) 
    private String originator = null; 

    @XmlElement(name = "CopyrightYear", required = true, nillable = true) 
    private String copyrightYear = null; 

    /** 
    * @return the seriesTitle 
    */ 
    public String getSeriesTitle() { 
     return seriesTitle; 
    } 

    /** 
    * @param seriesTitle the seriesTitle to set 
    */ 
    public void setSeriesTitle(String seriesTitle) { 
     this.seriesTitle = seriesTitle; 
    } 

    /** 
    * @return the programmeTitle 
    */ 
    public String getProgrammeTitle() { 
     return programmeTitle; 
    } 

    /** 
    * @param programmeTitle the programmeTitle to set 
    */ 
    public void setProgrammeTitle(String programmeTitle) { 
     this.programmeTitle = programmeTitle; 
    } 

    /** 
    * @return the episodeTitleNumber 
    */ 
    public String getEpisodeTitleNumber() { 
     return episodeTitleNumber; 
    } 

    /** 
    * @param episodeTitleNumber the episodeTitleNumber to set 
    */ 
    public void setEpisodeTitleNumber(String episodeTitleNumber) { 
     this.episodeTitleNumber = episodeTitleNumber; 
    } 

    /** 
    * @return the productionNumber 
    */ 
    public String getProductionNumber() { 
     return productionNumber; 
    } 

    /** 
    * @param productionNumber the productionNumber to set 
    */ 
    public void setProductionNumber(String productionNumber) { 
     this.productionNumber = productionNumber; 
    } 

    /** 
    * @return the synopsis 
    */ 
    public String getSynopsis() { 
     return synopsis; 
    } 

    /** 
    * @param synopsis the synopsis to set 
    */ 
    public void setSynopsis(String synopsis) { 
     this.synopsis = synopsis; 
    } 

    /** 
    * @return the originator 
    */ 
    public String getOriginator() { 
     return originator; 
    } 

    /** 
    * @param originator the originator to set 
    */ 
    public void setOriginator(String originator) { 
     this.originator = originator; 
    } 

    /** 
    * @return the copyrightYear 
    */ 
    public String getCopyrightYear() { 
     return copyrightYear; 
    } 

    /** 
    * @param copyrightYear the copyrightYear to set 
    */ 
    public void setCopyrightYear(String copyrightYear) { 
     this.copyrightYear = copyrightYear; 
    } 


}

技術類：

import javax.xml.bind.annotation.XmlAccessType; 
import javax.xml.bind.annotation.XmlAccessorType; 
import javax.xml.bind.annotation.XmlElement; 
import javax.xml.bind.annotation.XmlRootElement; 


@XmlRootElement(name = "Technical") 
@XmlAccessorType(XmlAccessType.FIELD) 
public class Technical { 

    @XmlElement(name = "ShimName", required = true, nillable = true) 
    private String shimName = null; 

    @XmlElement(name = "ShimVersion", required = true, nillable = true) 
    private String shimVersion = "1.0"; 


    @XmlElement(name = "ContactInformation", required = true, nillable = true) 
    private ContactInformation contactInformation = new ContactInformation(); 

}

ContactInformation類：

import javax.xml.bind.annotation.XmlAccessType; 
import javax.xml.bind.annotation.XmlAccessorType; 
import javax.xml.bind.annotation.XmlElement; 
import javax.xml.bind.annotation.XmlRootElement; 

@XmlRootElement(name = "ContactInformation") 
@XmlAccessorType(XmlAccessType.FIELD) 
public class ContactInformation { 


    @XmlElement(name = "ContactEmail", required = true, nillable = true) 
    private String contactEmail = null; 

    @XmlElement(name = "ContactTelephoneNumber", required = true, nillable = true) 
    private String contactTelephoneNumber = null; 

    /** 
    * @return the contactEmail 
    */ 
    public String getContactEmail() { 
     return contactEmail; 
    } 

    /** 
    * @param contactEmail the contactEmail to set 
    */ 
    public void setContactEmail(String contactEmail) { 
     this.contactEmail = contactEmail; 
    } 

    /** 
    * @return the contactTelephoneNumber 
    */ 
    public String getContactTelephoneNumber() { 
     return contactTelephoneNumber; 
    } 

    /** 
    * @param contactTelephoneNumber the contactTelephoneNumber to set 
    */ 
    public void setContactTelephoneNumber(String contactTelephoneNumber) { 
     this.contactTelephoneNumber = contactTelephoneNumber; 
    } 


}

來源

2017-09-25 karen

你嘗試從''刪除=的nillable TRUE' @ XmlElement'註解？ – Vadim

我嘗試過以及各種組合，但通過在編輯類中刪除nillable = true，xml中缺少空值，如下所示：<？xml version =「1.0」encoding =「UTF-8」standalone =「是「> 系列1 測試程序第1集 ... – karen

有誰知道另一個XML庫，我可以使用，而不是JAXB，可以提供我需要的結果嗎？ – karen

不幸的是，我最後不得不操縱（破解版）的XML如下：

 StringWriter stringWriter = new StringWriter(); 
     marshaller.marshal(programme, stringWriter); 

     String xmlContent = stringWriter.toString(); 
     xmlContent = xmlContent.replaceAll("xsi:nil=\"true\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"", ""); 
     xmlContent = xmlContent.replaceAll("</ns2:", "</"); 
     xmlContent = xmlContent.replaceAll(":ns2=", "="); 
     xmlContent = xmlContent.replaceAll("<ns2:", "<"); 

     result = xmlContent;

來源

2017-11-14 10:50:24 karen

JAXB提供空的XML元素爲<xmlelement/>並刪除命名空間名稱

回答

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