java解析xml并从复杂的xml检索子数据
[英]java parsing xml and retriving child data from complex xml
问题描述
I am trying parse an xml file by using below java code. 
我正在尝试通过使用下面的Java代码来解析xml文件。 The problem is while it is reading data from inner I can retrive data data from every where but if there are multi items under one package which means, while it does not retrive all child under parent would you please help? 问题是当它从内部读取数据时，我可以从任何地方检索数据数据，但是如果一个包中有多个项目，这意味着虽然它不检索父项下的所有子级，请您帮忙吗？
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);
}
}
Please find xml as below
<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>
1 个解决方案
解决方案1
0 已采纳 2014-04-03 05:50:50
I have found answer that should be continue to iteration by nested NodeList methood as below code 我发现应该通过嵌套的NodeList methood继续迭代的答案，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 ; //-------NodeList PackageBarcodeNodeList = PackageRootElement .getElementsByTagName("CBarcode");
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 ///// }
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