通过 CsvListWriter 读写.csv文件辅助类

package cn.gov.cnis.db;

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.supercsv.io.CsvListReader;
import org.supercsv.io.CsvListWriter;
import org.supercsv.prefs.CsvPreference;

public class OperateCsv {

	/**
	 * 读取csv文件(不带头部)
	 *
	 * @param String filePath
	 * @return csv文件组装成list
	 * @throws IOException
	 */
	static public List<String[]> getContentFromFile(String filePath) throws IOException {
		File file = new File(filePath);
		List<String[]> content = new ArrayList<String[]>();
		CsvListReader reader = new CsvListReader(new FileReader (file), CsvPreference.EXCEL_PREFERENCE);
		reader.getCSVHeader(true);// 去除头部字段声明
		List<String> line = new ArrayList<String>();
		while ((line = reader.read()) != null) {
			content.add(line.toArray(new String[] {}));
		}
		return content;
	}

	/**
	 * 读取csv文件(带头部)
	 *
	 * @param String filePath
	 * @return csv文件组装成list
	 * @throws IOException
	 */
	static public List<String[]> getDetailFromFile(String filePath) throws IOException {
		File file = new File(filePath);
		List<String[]> content = new ArrayList<String[]>();
		CsvListReader reader = new CsvListReader(new FileReader(file), CsvPreference.EXCEL_PREFERENCE);
		String[] header = reader.getCSVHeader(true);
		content.add(header);
		List<String> line = new ArrayList<String>();
		while ((line = reader.read()) != null) {
			content.add(line.toArray(new String[] {}));
		}
		return content;
	}

	/**
	 * 读取csv文件的头部
	 *
	 * @param String filePath
	 * @return csv文件的头部
	 * @throws IOException
	 */
	static public String[] getHeaderFromFile(String filePath) throws IOException {
		File file = new File(filePath);
		CsvListReader reader = new CsvListReader(new FileReader (file), CsvPreference.EXCEL_PREFERENCE);
		return reader.getCSVHeader(true);
	}

	/**
	 * 写入csv文件
	 *
	 * @param String filePath
	 * @param header
	 *            头部
	 * @param content
	 *            内容
	 * @throws IOException
	 */
	static public void writeToCsv(String filePath, String[] header, List<String[]> content)
			throws IOException {
		File file = new File(filePath);
		CsvListWriter writer = new CsvListWriter(new FileWriter(file), CsvPreference.EXCEL_PREFERENCE);
		writer.writeHeader(header);
		for (String[] str : content) {
			writer.write(str);
		}
		writer.close();
	}

	/**
	 * 写入csv文件
	 *
	 * @param String filePath
	 * @param content
	 *            内容
	 * @throws IOException
	 */
	static public void writeContentToCsv(String filePath, List<String[]> content)
			throws IOException {
		File file = new File(filePath);
		CsvListWriter writer = new CsvListWriter(new FileWriter(file),CsvPreference.EXCEL_PREFERENCE);
		for (String[] str : content) {
			writer.write(str);
		}
		writer.close();
	}

	/**
	 * 写入csv文件(头部)
	 *
	 * @param String filePath
	 * @param content
	 *            内容
	 * @throws IOException
	 */
	static public void writeHeaderToCsv(String filePath, String[] header) throws IOException {
		File file = new File(filePath);
		CsvListWriter writer = new CsvListWriter(new FileWriter(file),CsvPreference.EXCEL_PREFERENCE);
		writer.writeHeader(header);
		writer.close();
	}

	public static void main(String[] args) throws IOException {
		OperateCsv operateCsv = new OperateCsv();
		String file = "e:/Projects/Java/luke-3.4.0_1/AVDDOCS/export/73602.csv";
		List<String[]> content = operateCsv.getDetailFromFile(file);
		String[] header = operateCsv.getHeaderFromFile(file);
		for (String[] str : content) {
			for (int i = 0; i < str.length; i++) {

				System.out.println(str[i] + "  " + str[i + 1] + "  "
						+ str[i + 2] + "  " + str[i + 3]);
				i = i + 4;

				// System.out.println(str[i]);

			}
			String file1 = "D:/2.csv";
			operateCsv.writeToCsv(file1, header, content);
			operateCsv.writeHeaderToCsv(file1, header);
			operateCsv.writeContentToCsv(file1, content);
		}
	}
}