import org.supercsv.cellprocessor.ConvertNullTo; //导入依赖的package包/类
public static CellProcessor[] getProcessors(List<String> fields) {

		int fieldsSize = fields.size();
		final CellProcessor[] processors = new CellProcessor[fieldsSize];
		int i = 0;
		for(String field : fields){
			if(Arrays.asList(processorsDateType).contains(field)){
				processors[i] =  new Optional(new FmtDate("dd-MM-yyyy HH:mm"));
			}else{
				processors[i] = new ConvertNullTo("");
			}
			i++;
		}

		return processors;
	}
 

import org.supercsv.cellprocessor.ConvertNullTo; //导入依赖的package包/类
public static <V> void writeCsv(final DataFrame<V> df, final OutputStream output)
throws IOException {
    try (CsvListWriter writer = new CsvListWriter(new OutputStreamWriter(output), CsvPreference.STANDARD_PREFERENCE)) {
        final String[] header = new String[df.size()];
        final Iterator<Object> it = df.columns().iterator();
        for (int c = 0; c < df.size(); c++) {
            header[c] = String.valueOf(it.hasNext() ? it.next() : c);
        }
        writer.writeHeader(header);
        final CellProcessor[] procs = new CellProcessor[df.size()];
        final List<Class<?>> types = df.types();
        for (int c = 0; c < df.size(); c++) {
            final Class<?> cls = types.get(c);
            if (Date.class.isAssignableFrom(cls)) {
                procs[c] = new ConvertNullTo("", new FmtDate("yyyy-MM-dd'T'HH:mm:ssXXX"));
            } else {
                procs[c] = new ConvertNullTo("");
            }
        }
        for (final List<V> row : df) {
            writer.write(row, procs);
        }
    }
}
 

import org.supercsv.cellprocessor.ConvertNullTo; //导入依赖的package包/类
private List<String> readCompleteWorkAuthors(String inputFilename) throws FileNotFoundException, IOException {
	CellProcessor[] processors = new CellProcessor[62];
	for (int x = 0; x < processors.length; x++) {
		processors[x] = new ConvertNullTo("");
	}
	List<String> result = new ArrayList<>(5000);
	try (ICsvListReader listReader = new CsvListReader(new FileReader(
			inputFilename), CsvPreference.STANDARD_PREFERENCE)) {

		listReader.getHeader(true); //skip titles
		
		List<Object> ergList;
		while ((ergList = listReader.read(processors)) != null) {
			if ("1".equals(ergList.get(5)) && !ergList.get(17).toString().isEmpty()) {
				result.add(ergList.get(17).toString());
			}
		}
	}
	return result;
}
 

import org.supercsv.cellprocessor.ConvertNullTo; //导入依赖的package包/类
private CellProcessor[] getProcessors() {
    return new CellProcessor[] { new ParseInt(), // device id
            new JodaTimeCellProcessor().withSupportForPattern(Constants.DATE_TIME_PATTERN_POSTGRES), // timestamp
            new ConvertNullTo(Double.NaN, new ParseDouble()), // speed
            new ConvertNullTo(Double.NaN, new ParseDouble()), // longitude
            new ConvertNullTo(Double.NaN, new ParseDouble()), // latitude
            new ConvertNullTo(Double.NaN, new ParseDouble()), // altitude
            new ConvertNullTo(Double.NaN, new ParseDouble()), // tspeed
            new ConvertNullTo(-1, new ParseInt()), // index
            new ConvertNullTo(Double.NaN, new ParseDouble()), // x
            new ConvertNullTo(Double.NaN, new ParseDouble()), // y
            new ConvertNullTo(Double.NaN, new ParseDouble()) // z
    };
}
 

import org.supercsv.cellprocessor.ConvertNullTo; //导入依赖的package包/类
private CellProcessor[] createProcessors(String[] header) {
    CellProcessor[] procs = new CellProcessor[header.length];
    procs[0] = new Unique();
    for (int i = 1; i < header.length; i++) {
        procs[i] = new ConvertNullTo("");
    }

    return procs;
}