java - SuperCSV 附加而不是覆盖?

标签 java android csv supercsv

是否可以向 CSV 文件添加新行,而不是覆盖最后一行?

这是我想添加新行时调用的方法:

private static void writeWithCsvMapWriter() throws Exception 
{
    final String[] header = new String[] { "Engineer", "Time/Date", "Project", "Test ID", "Data Centre", "Data Hall", "Row", "Grille", "I/S" };

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd_HH:mm:ss");
    String currentDateandTime = sdf.format(new Date());

    final Map<String, Object> NewRow = new HashMap<String, Object>();
    NewRow.put(header[0], Name.getText().toString());
    NewRow.put(header[1], currentDateandTime);
    NewRow.put(header[2], "Expect");
    NewRow.put(header[3], TestID.getText());
    NewRow.put(header[4], DataCentre.getText());
    NewRow.put(header[5], DataHall.getText());
    NewRow.put(header[6], Row.getText());
    NewRow.put(header[7], Grille.getText());
    NewRow.put(header[8], IS.getText());

    ICsvMapWriter mapWriter = null;

    try 
    {
        mapWriter = new CsvMapWriter(new FileWriter("data/data/" + PACKAGE_NAME +"/writeWithCsvMapWriter.csv"), CsvPreference.STANDARD_PREFERENCE);

        final CellProcessor[] processors = getProcessors();

        mapWriter.writeHeader(header);
        mapWriter.write(NewRow, header, processors);  
    }
    finally 
    {
        if( mapWriter != null ) 
        {
            mapWriter.close();
        }
    }
}

谢谢

最佳答案

new FileWriter的参数中加入true:

mapWriter = new CsvMapWriter(new FileWriter(".../writeWithCsvMapWriter.csv", true), CsvPreference.STANDARD_PREFERENCE);

关于java - SuperCSV 附加而不是覆盖?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15729977/

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