java csv 文件导出


package com.qxs.web.util;

import com.google.common.collect.Lists;
import org.apache.log4j.Logger;

import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.nio.charset.Charset;
import java.util.List;

/**
 * Created by 屈想顺 on 2018/1/22.
 */
public class CSVfileUtil {
    private static final Logger logger = Logger.getLogger(CSVfileUtil.class);

    public static void main(String[] args){
        String path = "D:/";
        String fileName = "test";
        List<String> dataList = Lists.newArrayList();
        dataList.add("名字,年龄,性别");
        dataList.add("曹操,22,男");
        dataList.add("刘备,20,男");
        dataList.add("孙权,19,男");
        try {
            createCsv(path, fileName, dataList);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 导出
     * @param fileName     csv文件(路径+文件名),csv文件不存在会自动创建
     * @param dataList 数据
     * @return
     */
    public static File createCsv(String path, String fileName, List<String> dataList) throws Exception {
        File csvFile = null;
        FileOutputStream out = null;
        try {
            File file = new File(path);
            if (!file.exists()) {
                file.mkdir();
            }
            // 定义文件名格式并创建
            csvFile = File.createTempFile(fileName, ".csv", new File(path));
            logger.info("csvFile:" + csvFile);

            //字符 导出csv 文件的乱码问题,需要加BOM头
            out = new FileOutputStream(csvFile);
            out.write(new byte[] { (byte) 0xEF, (byte) 0xBB,(byte) 0xBF });
            int i = 0;
            if (dataList != null && !dataList.isEmpty()) {
                for (String data : dataList) {
                    out.write(data.getBytes(Charset.forName("UTF-8")));
                    if (i != dataList.size() - 1)
                        out.write("\r".getBytes());
                    i++;
                }
            }
        } catch (Exception e) {
            logger.info("Create CSV file is error: ", e);
        } finally {
            if (out != null) {
                out.close();
            }
        }
        return csvFile;
    }
}









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转载自blog.csdn.net/crazy__qu/article/details/79198272