Verschachtelte POJO mit Super-CSV lesen

Question

Ich habe versucht, ein verschachteltes POJO mit CSV zu laden. Für einen Fehler konnte ich es nicht funktionieren lassen.

Hier finden Sie meinen Code unten. Die unten Klasse Person enthält zwei POJO Feldadresse und attribs

public class Person 
{ 
    public String   firstname; 
    public String   lastname; 
    public PersonAttribute attribs; 
    public Address   address; 
    //Getters and setters 
} 


PersonAttribute class 

{ 
    public int height; 
    public int weight; 
    //Getters and setters 
} 

Adresse Klasse

public class Address 
{ 
    public String  city; 
    public String  zipCode; 
    public GeoLocation geoLocation; 

// Getter und Setter }

GeoLocation

public class GeoLocation 
{ 
    private String latitude; 
    private String longitude; 

// Getter und Setter }

Und jetzt versuche ich, die CSV zu lesen und Personenklasse zu füllen. Ich kann es nicht funktionieren lassen. Hier ist mein Code

public class ReadWithCsvDozerBeanReader 
{ 

    private static final String  CSV      = "firstname, lastname, height, weight, city,zipcode,latitude,longitude\n" 
     + "bill,smith,180,200,ABC,123,48.8525525,2.3417763\n" + "james,smith,192,250,DEF,456,48.852129,2.3355093"; 

    private static final int   ATT_START_INDEX   = 2; 

    private static final int   ADDRESS_START_INDEX  = 4; 

    private static final int   GEO_LOCATION_START_INDEX = 6; 

    // custom preferences required because CSV contains spaces that aren't part 
    // of the data 
    private static final CsvPreference PREFS     = new CsvPreference.Builder(
      CsvPreference.STANDARD_PREFERENCE).surroundingSpacesNeedQuotes(true).build(); 

    public static void main (String[] args) throws IOException 
    { 
     readWithCsvDozerBeanReader(new StringReader(CSV)); 

    } 

    private static void readWithCsvDozerBeanReader (final Reader reader) throws IOException 
    { 
     ICsvDozerBeanReader beanReader = null; 
     try 
     { 
      beanReader = new CsvDozerBeanReader(reader, PREFS); 

      final String[] header = beanReader.getHeader(true); 

      // set up the field mapping, processors and hints dynamically 
      final String[] fieldMapping = new String[header.length]; 
      final CellProcessor[] processors = new CellProcessor[header.length]; 
      final Class<?>[] hintTypes = new Class<?>[header.length]; 
      for (int i = 0; i < header.length; i++) 
      { 
       if (i < ATT_START_INDEX) 
       { 
        // normal mappings 
        fieldMapping[i] = header[i]; 
        processors[i] = new NotNull(); 
        hintTypes[i] = Person.class; 
       } 
       else if (i < ADDRESS_START_INDEX) 
       { 
        // attribute mappings 
        fieldMapping[i] = header[i]; 
        processors[i] = new NotNull(); 
        hintTypes[i] = PersonAttribute.class; 
       } 
       else if (i < GEO_LOCATION_START_INDEX) 
       { 

        // Address mappings 
        fieldMapping[i] = header[i]; 
        hintTypes[i] = Address.class; 

       } 
       else 
       { 
        fieldMapping[i] = header[i]; 
        hintTypes[i] = GeoLocation.class; 
       } 

      } 

      beanReader.configureBeanMapping(Person.class, fieldMapping, hintTypes); 

      Person person; 
      while ((person = beanReader.read(Person.class, processors)) != null) 
      { 
       System.out.println(String.format("lineNo=%s, rowNo=%s, person=%s", beanReader.getLineNumber(), 
         beanReader.getRowNumber(), person)); 
      } 

     } 
     finally 
     { 
      if (beanReader != null) 
      { 
       beanReader.close(); 
      } 
     } 
    } 

} 

ich die folgenden Fehler Exception in thread „main“ org.dozer.MappingException bekommen: Nein lesen oder Verfahren für das Feld (Höhe) in der Klasse

Answer 1

habe ich es gefunden schreiben arbeiten. Das Problem lag in der Feldzuordnung.

private static void readWithCsvDozerBeanReader (final Reader reader) throws IOException 
{ 
    ICsvDozerBeanReader beanReader = null; 
    try 
    { 
     beanReader = new CsvDozerBeanReader(reader, PREFS); 

     final String[] header = beanReader.getHeader(true); 

     // set up the field mapping, processors and hints dynamically 
     final String[] fieldMapping = new String[header.length]; 
     final CellProcessor[] processors = new CellProcessor[header.length]; 
     final Class<?>[] hintTypes = new Class<?>[header.length]; 
     for (int i = 0; i < header.length; i++) 
     { 
      fieldMapping[i] = header[i]; 
      if (header[i].equals("firstname")) 
      { 
       processors[i] = new NotNull(); 
      } 
      if (header[i].equals("height") || header[i].equals("weight")) 
      { 
       processors[i] = new ParseInt(); 
      } 
     } 

     beanReader.configureBeanMapping(Person.class, fieldMapping, hintTypes); 

     Person person; 
     while ((person = beanReader.read(Person.class, processors)) != null) 
     { 
      System.out.println(String.format("lineNo=%s, rowNo=%s, person=%s", beanReader.getLineNumber(), 
        beanReader.getRowNumber(), person)); 
     } 

    } 
    finally 
    { 
     if (beanReader != null) 
     { 
      beanReader.close(); 
     } 
    } 
}