Java CSVReader ignore commas in double quotes

Question

I have a CSV file that I am having trouble parsing. I am using the opencsv library. Here is what my data looks like and what I am trying to achieve.

RPT_PE,CLASS,RPT_MKT,PROV_CTRCT,CENTER_NM,GK_TY,MBR_NM,MBR_PID "20150801","NULL","33612","00083249P PCP602","JOE SMITH ARNP","NULL","FRANK, LUCAS E","50004655200"

The issue I am having is the member name ("FRANK, LUCAS E") is being split into two columns and the member name should be one. Again I'm using opencsv and a comma as the separator. Is there any way I can ignore the commas inside the double-quotes?

        public void loadCSV(String csvFile, String tableName,
            boolean truncateBeforeLoad) throws Exception {

        CSVReader csvReader = null;
        if (null == this.connection) {
            throw new Exception("Not a valid connection.");
        }
        try {

            csvReader = new CSVReader(new FileReader(csvFile), this.seprator);

        } catch (Exception e) {
            e.printStackTrace();
            throw new Exception("Error occured while executing file. "
                    + e.getMessage());
        }
        String[] headerRow = csvReader.readNext();

        if (null == headerRow) {
            throw new FileNotFoundException(
                    "No columns defined in given CSV file."
                    + "Please check the CSV file format.");
        }

        String questionmarks = StringUtils.repeat("?,", headerRow.length);
        questionmarks = (String) questionmarks.subSequence(0, questionmarks
                .length() - 1);

        String query = SQL_INSERT.replaceFirst(TABLE_REGEX, tableName);
        System.out.println("Base Query: " + query);
        String headerRowMod = Arrays.toString(headerRow).replaceAll(", ]", "]");
        String[] strArray = headerRowMod.split(",");

        query = query
                .replaceFirst(KEYS_REGEX, StringUtils.join(strArray, ","));

        System.out.println("Add Headers: " + query);
        query = query.replaceFirst(VALUES_REGEX, questionmarks);
        System.out.println("Add questionmarks: " + query);

        String[] nextLine;
        Connection con = null;
        PreparedStatement ps = null;
        try {
            con = this.connection;
            con.setAutoCommit(false);
            ps = con.prepareStatement(query);

            if (truncateBeforeLoad) {
                //delete data from table before loading csv
                con.createStatement().execute("DELETE FROM " + tableName);
            }

            final int batchSize = 1000;
            int count = 0;
            Date date = null;
            while ((nextLine = csvReader.readNext()) != null) {
                System.out.println("Next Line: " + Arrays.toString(nextLine));
                if (null != nextLine) {
                    int index = 1;
                    for (String string : nextLine) {
                        date = DateUtil.convertToDate(string);
                        if (null != date) {
                            ps.setDate(index++, new java.sql.Date(date
                                    .getTime()));
                        } else {
                            ps.setString(index++, string);
                        }
                    }
                    ps.addBatch();
                }
                if (++count % batchSize == 0) {
                    ps.executeBatch();
                }
            }
            ps.executeBatch(); // insert remaining records
            con.commit();
        } catch (SQLException | IOException e) {
            con.rollback();
            e.printStackTrace();
            throw new Exception(
                    "Error occured while loading data from file to database."
                    + e.getMessage());
        } finally {
            if (null != ps) {
                ps.close();
            }
            if (null != con) {
                con.close();
            }
            csvReader.close();
        }
    }

    public char getSeprator() {
        return seprator;
    }

    public void setSeprator(char seprator) {
        this.seprator = seprator;
    }

    public char getQuoteChar() {
        return quoteChar;
    }

    public void setQuoteChar(char quoteChar) {
        this.quoteChar = quoteChar;
    }
}

Answer 1

Did you try the the following?

CSVReader reader = new CSVReader(new FileReader("yourfile.csv"), ',');

I wrote a following program and it works for me, I got the following result:

[20150801] [NULL] [33612] [00083249P PCP602] [JOE SMITH ARNP] [NULL] [FRANK, LUCAS E] [50004655200]

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

import au.com.bytecode.opencsv.CSVReader;

public class CVSTest {

    /**
     * @param args
     */
    public static void main(String[] args) {
        CSVReader reader = null;
        try {

            reader = new CSVReader(new FileReader(
                    "C:/Work/Dev/Projects/Pure_Test/Test/src/cvs"), ',');
        } catch (FileNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        String[] nextLine;
        try {
            while ((nextLine = reader.readNext()) != null) {
                // nextLine[] is an array of values from the line
                System.out.println("[" + nextLine[0] + "] [" + nextLine[1]
                        + "] [" + nextLine[2] + "] [" + nextLine[3] + "] ["
                        + nextLine[4] + "] [" + nextLine[5] + "] ["
                        + nextLine[6] + "] [" + nextLine[7] + "]");
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}