OpenCSV的使用

OpenCSV封装了CSV格式文件的输出和读入，可以自动处理CSV格式中的特殊字符。
1、输出
        CSVWriter writer = new CSVWriter(new OutputStreamWriter(FileUtils.openOutputStream(new File(filePath)),
                                                                DEFAULT_ENCODING));
        writer.writeAll(lines);
        writer.close();
2、读入
        CSVReader reader = new CSVReader(new InputStreamReader(FileUtils.openInputStream(new File(filePath)),
                                                               DEFAULT_ENCODING));
        List <String[]> lines = reader.readAll();
        return lines;