Java中使用opencsv读写csv文件示例

CSVReader reader = new CSVReader(new FileReader("yourfile.csv"));
String [] nextLine;
while ((nextLine = reader.readNext()) != null) {
    // nextLine[] is an array of values from the line
    System.out.println(nextLine[0] + nextLine[1] + "etc...");
}

CSVReader reader = new CSVReader(new FileReader("yourfile.csv"));
List myEntries = reader.readAll();

CSVWriter writer = new CSVWriter(new FileWriter("yourfile.csv"), '/t');
// feed in your array (or convert your data to an array)
String[] entries = "first#second#third".split("#");
writer.writeNext(entries);
writer.close();

CSVReader reader = new CSVReader(new FileReader("yourfile.csv"), '/t');

CSVReader reader = new CSVReader(new FileReader("yourfile.csv"), '/t', '/'');

CSVReader reader = new CSVReader(new FileReader("yourfile.csv"), '/t', '/'', 2);
dump SQL tables

java.sql.ResultSet myResultSet = ....
writer.writeAll(myResultSet, includeHeaders);

ColumnPositionMappingStrategy strat = new ColumnPositionMappingStrategy();
strat.setType(YourOrderBean.class);
String[] columns = new String[] {"name", "orderNumber", "id"}; // the fields to bind do in your JavaBean
strat.setColumnMapping(columns);
 
CsvToBean csv = new CsvToBean();
List list = csv.parse(strat, yourReader);