Javaで目的のXML出力が得られません

Question

CSVファイルをXMLに変換していますが、変換中ですが、望ましい構造化出力が得られません。

私のJavaコード： -

public static void main(String[] args){ 
    List<String> headers=new ArrayList<String>(5); 

    File file=new File("C:/Users/Admin/Desktop/data.csv"); 
    BufferedReader reader=null; 

    try { 


     DocumentBuilderFactory domFactory =DocumentBuilderFactory.newInstance(); 
     DocumentBuilder domBuilder=domFactory.newDocumentBuilder(); 

     Document newDoc=domBuilder.newDocument(); 
     // Root element 
     Element rootElement=newDoc.createElement("root"); 
     newDoc.appendChild(rootElement); 

     reader = new BufferedReader(new FileReader(file)); 
     int line=0; 

     String text=null; 
     while ((text=reader.readLine())!=null) { 

      StringTokenizer st=new StringTokenizer(text, "?", false);  
      String[] rowValues=new String[st.countTokens()]; 
      int index=0; 
      while (st.hasMoreTokens()) { 

       String next=st.nextToken(); 
       rowValues[index++]=next; 

      } 

      //String[] rowValues = text.split(","); 

      if (line == 0) { // Header row 
       for (String col:rowValues) { 
        headers.add(col); 

        Element rowElement=newDoc.createElement("header"); 
        rootElement.appendChild(rowElement); 

        for (int col1=0;col1<headers.size();col1++) { 
         String header = headers.get(col1); 
         String value = null; 

         if (col1<rowValues.length) { 
          value=rowValues[col1]; 
         } else { 
          // ?? Default value 
          value=" "; 
         } 
         rowElement.setTextContent(value); 
         System.out.println(headers+" "+value); 
       } 

       }} else { // Data row 
       Element rowElement=newDoc.createElement("row"); 
       rootElement.appendChild(rowElement); 

       for (int col=0;col<headers.size();col++) { 
        String header = headers.get(col); 
        String value = null; 

        if (col<rowValues.length) { 
         value=rowValues[col]; 
        } else { 
         // ?? Default value 
         value=" "; 
        } 
        rowElement.setTextContent(value); 
        System.out.println(header+" "+value); 


       } 
      } 
      line++; 
     } 


     try { 



      TransformerFactory tranFactory = TransformerFactory.newInstance(); 
      Transformer aTransformer = tranFactory.newTransformer(); 
      aTransformer.setOutputProperty(OutputKeys.INDENT, "yes"); 
      aTransformer.setOutputProperty(OutputKeys.METHOD, "xml"); 
      aTransformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4"); 

      Source src = new DOMSource(newDoc); 
      Result result = new StreamResult(new File("C:/Users/Admin/Desktop/data.xml")); 

      aTransformer.transform(src, result); 
      System.out.println("File creation successfully!"); 



     } catch (Exception exp) { 
      exp.printStackTrace(); 
     } finally { 
      try { 


      } catch (Exception e1) { 
      } 
      try { 

      } catch (Exception e1) { 
      } 
     } 
    } catch (Exception e1) { 
     e1.printStackTrace(); 
} 

} 

は、これは私のCSVファイルです： -

Symbol,Open,High,Low,Last Traded Price,Change 
"NIFTY 50","9,645.90","9,650.65","9,600.95","9,609.30","-5.70" 
"RELIANCE","1,390.00","1,414.20","1,389.00","1,407.55","26.50" 
"BPCL","647.70","665.00","645.95","660.10","10.75" 
"ADANIPORTS","368.50","373.80","368.00","372.25","4.25" 
"ONGC","159.50","161.75","159.35","160.80","1.70" 

そして、これは私が取得しています出力されます： -

<?xml version="1.0" encoding="UTF-8" standalone="no"?> 
<root> 
    <header>Symbol,Open,High,Low,Last Traded Price,Change</header> 
    <row>"NIFTY 50","9,645.90","9,650.65","9,600.95","9,609.30","-5.70"</row> 
    <row>"RELIANCE","1,390.00","1,414.20","1,389.00","1,407.55","26.50"</row> 
    <row>"BPCL","647.70","665.00","645.95","660.10","10.75"</row> 
    <row>"ADANIPORTS","368.50","373.80","368.00","372.25","4.25"</row> 
    <row>"ONGC","159.50","161.75","159.35","160.80","1.70"</row> 
</root> 

私はどこに間違っているのですか？私は私にしたがって試しましたが、ヘッダーと行セクションのどこに変更を加えるべきかを混乱させてしまいました。

を追加しました： - あなたの参考のために

<root> 
<header>symbol</header> 
<row>NIFTY 50</row> 
<row>RELIANCE</row> 
<row>BPCL></row> 
. 
. 
<header>Open</header> 
<row>9,645.90</row> 
<row>1,390.00</row> 
. 
. 
</root> 

Answer 1

予想される出力：これは、Apache CommonsのCSVを使用している

import java.io.File; 
import java.io.IOException; 
import java.nio.charset.StandardCharsets; 
import java.util.List; 

import javax.xml.parsers.DocumentBuilder; 
import javax.xml.parsers.DocumentBuilderFactory; 
import javax.xml.transform.OutputKeys; 
import javax.xml.transform.Result; 
import javax.xml.transform.Source; 
import javax.xml.transform.Transformer; 
import javax.xml.transform.TransformerFactory; 
import javax.xml.transform.dom.DOMSource; 
import javax.xml.transform.stream.StreamResult; 

import org.apache.commons.csv.CSVFormat; 
import org.apache.commons.csv.CSVParser; 
import org.apache.commons.csv.CSVRecord; 
import org.apache.commons.csv.QuoteMode; 
import org.w3c.dom.Document; 
import org.w3c.dom.Element; 

public class CsvToXml { 

    public static void main(String[] args) { 
     File inputFile = new File("C:/Users/Admin/Desktop/data.csv"); 
     CSVParser inParser = null; 
     Document newDoc = null; 
     try { 
      inParser = CSVParser.parse(inputFile, StandardCharsets.UTF_8, 
        CSVFormat.EXCEL.withHeader().withQuoteMode(QuoteMode.NON_NUMERIC)); 
      DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance(); 
      DocumentBuilder domBuilder = domFactory.newDocumentBuilder(); 

      newDoc = domBuilder.newDocument(); 
      // Root element 
      Element rootElement = newDoc.createElement("root"); 
      newDoc.appendChild(rootElement); 
      List<CSVRecord> records = inParser.getRecords(); 
      for (String key : inParser.getHeaderMap().keySet()) { 
       Element rowElement = newDoc.createElement("header"); 
       rootElement.appendChild(rowElement); 
       rowElement.setTextContent(key); 
       for (CSVRecord record : records) { 
        rowElement = newDoc.createElement("row"); 
        rootElement.appendChild(rowElement); 
        rowElement.setTextContent(record.get(key)); 
       } 
      } 
      TransformerFactory tranFactory = TransformerFactory.newInstance(); 
      Transformer aTransformer = tranFactory.newTransformer(); 
      aTransformer.setOutputProperty(OutputKeys.INDENT, "yes"); 
      aTransformer.setOutputProperty(OutputKeys.METHOD, "xml"); 
      aTransformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4"); 

      Source src = new DOMSource(newDoc); 
      Result result = new StreamResult(new File("C:/Users/Admin/Desktop/data.xml")); 

      aTransformer.transform(src, result); 
      System.out.println("File creation successfully!"); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } finally { 
      if (inParser != null) { 
       try { 
        inParser.close(); 
       } catch (IOException e) { 
        e.printStackTrace(); 
       } 
      } 
     } 
    } 
} 

。