java解析XML并从复杂的XML中检索子数据

我想通过使用下面的java代码解析XML文件。问题是当它从内部读取数据时，我可以从每个位置检索数据数据，但是如果在一个包下有多个项目，这意味着，虽然它不会检索父项下的所有孩子，但是请您帮忙吗？java解析XML并从复杂的XML中检索子数据

import java.io.File; 
import org.w3c.dom.*; 
import javax.xml.parsers.DocumentBuilderFactory; 
import javax.xml.parsers.DocumentBuilder; 
import org.xml.sax.SAXException; 
import org.xml.sax.SAXParseException; 
public class ReadAndPrintXMLFile{ 

public static void ReadXmlandParce(String filename){ 
try { 

     DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance(); 
     DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder(); 
     Document doc = docBuilder.parse (new File(filename)); 

     // normalize text representation 
     doc.getDocumentElement().normalize(); 
     System.out.println ("Root element of the doc is " + 
      doc.getDocumentElement().getNodeName()); 


     NodeList Messagend = doc.getElementsByTagName("IMessage"); 

     for(int s=0; s<Messagend.getLength() ; s++){ 


      Node MessageItemNode = Messagend.item(s); 
      if(MessageItemNode.getNodeType() == Node.ELEMENT_NODE){ 


       Element MessageElement = (Element)MessageItemNode; 

       //------- 
       NodeList MessageNamend = MessageElement.getElementsByTagName("IMessageName"); 
       Element MessageNameElement = (Element)MessageNamend.item(0); 

       NodeList textMessageName = MessageNameElement.getChildNodes(); 
       System.out.println("MessageName : " + 
         ((Node)textMessageName.item(0)).getNodeValue().trim()); 

       //------- 
       NodeList MessageDatend = MessageElement.getElementsByTagName("IMessageDate"); 
       Element MessageDateElement = (Element)MessageDatend.item(0); 

       NodeList textMessageDate = MessageDateElement.getChildNodes(); 
       System.out.println("MessageDate : " + 
         ((Node)textMessageDate.item(0)).getNodeValue().trim()); 

       //---- 
       NodeList ServiceOrderednd = MessageElement.getElementsByTagName("IServiceOrderedType"); 
       Element ServiceOrderedElement = (Element)ServiceOrderednd.item(0); 

       NodeList textServiceOrdered = ServiceOrderedElement.getChildNodes(); 
       System.out.println("ServiceOrdered : " + 
         ((Node)textServiceOrdered.item(0)).getNodeValue().trim()); 

       //------  

       NodeList ServiceTypend = MessageElement.getElementsByTagName("IServiceType"); 
       Element ServiceTypeElement = (Element)ServiceTypend.item(0); 

       NodeList textServiceType = ServiceTypeElement.getChildNodes(); 
       System.out.println("ServiceType : " + 
         ((Node)textServiceType.item(0)).getNodeValue().trim()); 

       //------ 

       NodeList SpecialInstructionsnd = MessageElement.getElementsByTagName("Instructions"); 
       Element SpecialInstructionsElement = (Element)SpecialInstructionsnd.item(0); 

       NodeList textSpecialInstructions = SpecialInstructionsElement.getChildNodes(); 
       System.out.println("SpecialInstructions : " + 
         ((Node)textSpecialInstructions.item(0)).getNodeValue().trim()); 

       //------ 

       NodeList CompanyNamend = MessageElement.getElementsByTagName("CompanyName"); 
       Element CompanyNameElement = (Element)CompanyNamend.item(0); 

       NodeList textCompanyName = CompanyNameElement.getChildNodes(); 
       System.out.println("CompanyName : " + 
         ((Node)textCompanyName.item(0)).getNodeValue().trim()); 

       //------ 



      }//end of if clause 


     }//end of for loop with s var 


     /////////////////////////////////// 
     NodeList Consigneend = doc.getElementsByTagName("UConsignee"); 


     for(int j=0; j<Consigneend.getLength() ; j++){ 


      Node ConsigneeItemNode = Consigneend.item(j); 
      if(ConsigneeItemNode.getNodeType() == Node.ELEMENT_NODE){ 


       Element ConsigneeElement = (Element)ConsigneeItemNode; 

       //------- 
       NodeList CompanyCodend = ConsigneeElement.getElementsByTagName("UCompanyCode"); 
       Element CompanyCodeElement = (Element)CompanyCodend.item(0); 

       NodeList textCompanyCode = CompanyCodeElement.getChildNodes(); 

       try{ 
       System.out.println("UCompanyCode : " +((Node)textCompanyCode.item(0)).getNodeValue().trim()); 
       } 
       catch (NullPointerException err) { 
        System.out.println ("UCompanyCode : empty"); 

        } 

       //------- 
       NodeList CompanyNamend = ConsigneeElement.getElementsByTagName("UCompanyName"); 
       Element CompanyNameElement = (Element)CompanyNamend.item(0); 

       NodeList textCompanyName = CompanyNameElement.getChildNodes(); 
       System.out.println("CompanyName : " + 
         ((Node)textCompanyName.item(0)).getNodeValue().trim()); 

       //---- 
       NodeList TaxNond = ConsigneeElement.getElementsByTagName("UTaxNo"); 
       Element TaxNoElement = (Element)TaxNond.item(0); 

       NodeList textTaxNo= TaxNoElement.getChildNodes(); 
       System.out.println("TaxNo : " + 
         ((Node)textTaxNo.item(0)).getNodeValue().trim()); 

       //------      

       NodeList Street1nd = ConsigneeElement.getElementsByTagName("Street1"); 
       Element Street1Element = (Element)Street1nd.item(0); 

       NodeList textStreet1 = Street1Element.getChildNodes(); 
       try{ 
       System.out.println("Street1 : " + 
         ((Node)textStreet1.item(0)).getNodeValue().trim()); 
       } 
       catch (NullPointerException err) { 
        System.out.println ("Street1 : empty"); 
        } 
       //----      
       NodeList Street2nd = ConsigneeElement.getElementsByTagName("Street2"); 
       Element Street2Element = (Element)Street2nd.item(0); 

       NodeList textStreet2 = Street2Element.getChildNodes(); 
       try{ 
       System.out.println("Street2 : " + 
         ((Node)textStreet2.item(0)).getNodeValue().trim()); 
       } 
       catch (NullPointerException err) { 
        System.out.println ("Street2 : empty"); 
        } 
       //----      
       NodeList PostalCodend = ConsigneeElement.getElementsByTagName("PostalCode"); 
       Element PostalCodeElement = (Element)PostalCodend.item(0); 

       NodeList textPostalCode = PostalCodeElement.getChildNodes(); 
       try{ 
       System.out.println("PostalCode : " + 
         ((Node)textPostalCode.item(0)).getNodeValue().trim()); 
       } 
       catch (NullPointerException err) { 
        System.out.println ("PostalCode : empty"); 
        } 
       //---- 
       NodeList CityNamend = ConsigneeElement.getElementsByTagName("CityName"); 
       Element CityNameElement = (Element)CityNamend.item(0); 

       NodeList textCityName = CityNameElement.getChildNodes(); 
       try{ 
       System.out.println("CityName : " + 
         ((Node)textCityName.item(0)).getNodeValue().trim()); 
       } 
       catch (NullPointerException err) { 
        System.out.println ("CityName : empty"); 
        } 
       //---- 

       NodeList Countrynd = ConsigneeElement.getElementsByTagName("Country"); 
       Element CountryElement = (Element)Countrynd.item(0); 

       NodeList textCountry = CountryElement.getChildNodes(); 
       try{ 
       System.out.println("Country : " + 
         ((Node)textCountry.item(0)).getNodeValue().trim()); 
       } 
       catch (NullPointerException err) { 
        System.out.println ("Country : Bos"); 
        } 
       //---- 

       NodeList TaxRegNond = ConsigneeElement.getElementsByTagName("TaxRegNo"); 
       Element TaxRegNoElement = (Element)TaxRegNond.item(0); 

       NodeList textTaxRegNo = TaxRegNoElement.getChildNodes(); 
       try{ 
       System.out.println("TaxRegNo : " + 
         ((Node)textTaxRegNo.item(0)).getNodeValue().trim()); 
       } 
       catch (NullPointerException err) { 
        System.out.println ("TaxRegNo : empty"); 
        } 
       //---- 
       System.out.println ("+++++++++++++++++++++++++++"); 
       System.out.println ("Begin of Package"); 
       System.out.println ("+++++++++++++++++++++++++++"); 
       NodeList Packagend = doc.getElementsByTagName("CPackage"); 


       for(int k=0; k<Packagend.getLength() ; k++){ 

        Node PackageItemNode = Packagend.item(k); 
        if(PackageItemNode.getNodeType() == Node.ELEMENT_NODE){ 


         Element PackageElement = (Element)PackageItemNode; 

         //------- 
         NodeList PackageTypend = PackageElement.getElementsByTagName("CPackageType"); 
         Element PackageTypeElement = (Element)PackageTypend.item(0); 
         NodeList textPackageType = PackageTypeElement.getChildNodes(); 
         try{ 
         System.out.println("PackageType : " + 
           ((Node)textPackageType.item(0)).getNodeValue().trim()); 
         } 
         catch (NullPointerException err) { 
          System.out.println ("PackageType : empty"); 
          } 
         //------- 
         NodeList GrossWeightnd = PackageElement.getElementsByTagName("CGrossWeight"); 
         Element GrossWeightElement = (Element)GrossWeightnd.item(0); 
         NodeList textGrossWeight = GrossWeightElement.getChildNodes(); 
         try{ 
         System.out.println("GrossWeight : " + 
           ((Node)textGrossWeight.item(0)).getNodeValue().trim()); 
         } 
         catch (NullPointerException err) { 
          System.out.println ("GrossWeight : empty"); 
          } 
         //------- 
         NodeList Barcodend = PackageElement.getElementsByTagName("CBarcode"); 
         Element BarcodeElement = (Element)Barcodend.item(0); 
         NodeList textBarcode = BarcodeElement.getChildNodes(); 
         try{ 
         System.out.println("Barcode : " + 
           ((Node)textBarcode.item(0)).getNodeValue().trim()); 
         } 
         catch (NullPointerException err) { 
          System.out.println ("Barcode : empty"); 

          } 
         //------- 

         System.out.println ("+++++++++++++++++++++++++++"); 
         System.out.println ("Begin of Item"); 
         System.out.println ("+++++++++++++++++++++++++++"); 
         NodeList Itemnd = doc.getElementsByTagName("Item"); 


         for(int p=0; p<Itemnd.getLength() ; p++){ 


          Node ItemNode = Itemnd.item(p); 
          if(ItemNode.getNodeType() == Node.ELEMENT_NODE){ 


           Element ItemElement = (Element)ItemNode; 

         NodeList ItemCodend = ItemElement.getElementsByTagName("ItemCode"); 
         Element ItemCodeElement = (Element)ItemCodend.item(0); 
         NodeList textItemCode = ItemCodeElement.getChildNodes(); 
         try{ 
         System.out.println("ItemCode : " + 
           ((Node)textItemCode.item(0)).getNodeValue().trim()); 
         } 
         catch (NullPointerException err) { 
          System.out.println ("ItemCode : empty"); 
          } 
         //------- 
         NodeList Quantitynd = ItemElement.getElementsByTagName("ItemQuantity"); 
         Element QuantityElement = (Element)Quantitynd.item(0); 
         NodeList textQuantity = QuantityElement.getChildNodes(); 
         try{ 
         System.out.println("Quantity : " + 
           ((Node)textQuantity.item(0)).getNodeValue().trim()); 
         } 
         catch (NullPointerException err) { 
          System.out.println ("Quantity : empty"); 
          } 
         //------- 

          } 
         } 

        } 

       } 


      }//end of if clause 


     } 
     /////////////////////////////////// 


    }catch (SAXParseException err) { 
    System.out.println ("** Parsing error" + ", line " 
     + err.getLineNumber() + ", uri " + err.getSystemId()); 
    System.out.println(" " + err.getMessage()); 

    }catch (SAXException e) { 
    Exception x = e.getException(); 
    ((x == null) ? e : x).printStackTrace(); 

    }catch (Throwable t) { 
    t.printStackTrace(); 
    } 
    //System.exit (0); 

} 

}

请找到XML如下

<IMessage> 
<IMessageName>IM1234</IMessageName> 
<IMessageDate>20140328</IMessageDate> 
<IServiceOrderedType>Normal</IServiceOrderedType> 
<IServiceType>AIR</IServiceType> 
<Instructions>OP123456</Instructions> 
<CompanyName>Test</CompanyName> 
<UConsignee> 
<UCompanyCode></UCompanyCode> 
<UTaxNo>T1231132123</UTaxNo> 
<Street1>test132132</Street1> 
<Street2>Streeet1</Street2> 
<PostalCode>121212</PostalCode> 
<CityName>London</CityName> 
<Country>UK</Country> 
<TaxRegNo>121313</TaxRegNo> 
<CPackage> 
<CPackageType>BIG</CPackageType> 
<CGrossWeight>12</CGrossWeight> 
<CBarcode>54353454353</CBarcode> 
<Item> 
<ItemCode>IT122111</ItemCode> 
<ItemQuantity>50</ItemQuantity> 
</Item> 
<Item> 
<ItemCode>IT122851</ItemCode> 
<ItemQuantity>10</ItemQuantity> 
</Item> 
<Item> 
<ItemCode>IT122151</ItemCode> 
<ItemQuantity>18</ItemQuantity> 
</Item> 
</CPackage> 
<CPackage> 
<CPackageType>MEDIUM</CPackageType> 
<CGrossWeight>14</CGrossWeight> 
<CBarcode>54353454354</CBarcode> 
<Item> 
<ItemCode>IT18581</ItemCode> 
<ItemQuantity>100</ItemQuantity> 
</Item> 
<Item> 
<ItemCode>IT98561</ItemCode> 
<ItemQuantity>60</ItemQuantity> 
</Item> 
<Item> 
<ItemCode>IT68961</ItemCode> 
<ItemQuantity>12</ItemQuantity> 
</Item> 
</CPackage> 
</UConsignee> 
</IMessage>

来源

2014-03-28 zorox

我不明白你在这里问什么。（你似乎已经损坏了你的代码，这些虚假的'>'字符都是关于什么的？） –

你可以公开这个XML，以便它更容易.. – ashokramcse

xml是这样的 – zorox

我已经找到答案，应该由嵌套的节点列表methood将继续反复，如下代码

NodeList PackageRootNodeList = Messagend .getElementsByTagName("CPackage"); 

    for(int n=0; n<PackageRootNodeList .getLength() ; n++){ 


     Node PackageNode = PackageRootNodeList .item(s); 
     Element PackageRootElement = (Element)PackageNode ; 

      //-------

节点列表PackageBarcodeNodeList = PackageRootElement .getElementsByT agName（ “CBarcode”）; Element PackageBarcodeElement =（Element）PackageBarcodeNodeList .item（0）;

NodeList textCBarcode = PackageBarcodeElement .getChildNodes(); 
      System.out.println("CBarcode: " + 
        ((Node)textCBarcode.item(0)).getNodeValue().trim()); 

///// 
///// You will continue as the same methood in order to make deep iteration 
///// 
      }

来源

2014-04-03 05:50:50 zorox

java解析XML并从复杂的XML中检索子数据

回答

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