写入txt 、读取csv、读取txt

package com.csf.myproject.core.write;

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * 写入 txt 文件
 * @author fenglei.ma 2018年3月21日 上午11:24:28
 */
public class TestWrite {

    public static void main(String[] args) {
        System.out.println("----------------------start----------------------");
        try {
            String path = "C:\\Users\\fenglei.ma\\Desktop\\和讯服务部署\\test\\";
            String pathFile = path + new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()) + ".txt";

            File file = new File(pathFile);
            // 目标文件所在的目录不存在则创建
            if (!file.getParentFile().exists()) {
                if (file.getParentFile().mkdirs()) {
                    System.out.println("【 " + file.getParentFile() + " 】 目录不存在,已经创建");
                }
            }
            if (file.createNewFile()) {
                System.out.println("【 " + file + " 】 文件已经创建");
            }
            DataOutputStream out = new DataOutputStream(new FileOutputStream(file));

            // 写入文件
            out.write("<<实体>>".getBytes());
            out.write("\r\n".getBytes());
            out.write("名称    相关词".getBytes());
            out.write("\r\n".getBytes());
            
            for (int i = 0; i < 6; i++) {
                out.write((("datas数据".trim() + i) + " , " + "完成" + i).getBytes());
                out.write("\r\n".getBytes());// 换行
            }
            out.write("\r\n".getBytes());// 换行
            out.flush();
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println("----------------------end----------------------");
    }

}

----------------------------------------------------------------------------------------
/**
 * 读取文件
 */
List<String> sids = Lists.newArrayList();
try{
   InputStreamReader isr = new InputStreamReader(new FileInputStream(new File("C:\\Users\\fenglei.ma\\Desktop\\招商产业链\\二期优化\\数据修复.txt")), "UTF-8");
   BufferedReader br = new BufferedReader(isr);
   String line = "";
   while((line = br.readLine())!= null){
      sids.add(line);
   }
   sids = sids.stream().distinct().collect(Collectors.toList());
}catch(Exception e){
   e.printStackTrace();
}

----------------------------------------------------------------------------------------
/**
 * 写入文件
 */
 try {
    File directory = new File("");
    String outputPath = directory.getAbsolutePath() + "/src/main/java/" + this.packageOutPath.replace(".", "/") + "/" + entityNameClass + ".java";
    System.out.println("-------------->" + outputPath);
    PrintWriter pw = new PrintWriter(new OutputStreamWriter(new FileOutputStream(new File(outputPath)), "UTF-8"));
    pw.println(content);
    pw.flush();
    pw.close();
} catch (IOException e) {
    e.printStackTrace();
}
----------------------------------------------------------------------------------------
package com.csf.myproject.core.csv;

import java.io.File;
import java.nio.charset.Charset;

import com.csvreader.CsvReader;

/**
 * csv文件读取
 * 
 * @author fenglei.ma 2018年3月21日 上午11:35:54
 */
public class CsvTest {

    public static void main(String[] args) throws Exception {

        String path = "C:\\Users\\fenglei.ma\\Desktop\\和讯服务部署\\test\\简单测试的文件.csv";
        String charset = getJavaEncode(path);

        CsvReader reader = new CsvReader(path, ',', Charset.forName(charset));
        reader.setSafetySwitch(false);
        reader.readHeaders(); // 跳过表头

        System.out.println("dt    auth   title   content   url   htid");
        while (reader.readRecord()) { // 逐行读入除表头的数据
            try {
                String[] lineData = reader.getValues();

                String dt = lineData[0];
                String auth = lineData[1];
                String title = lineData[2];
                String content = lineData[3];
                String url = lineData[4];
                String htid = lineData[5];

                System.out.println(dt + "  " + auth + " " + title + "  " + content + "  " + url + "  " + htid);

            } catch (Exception e) {

            }
        }
    }

    /**
     * 得到文件的编码
     * 
     * @param filePath 文件路径
     * @return 文件的编码
     */
    public static String getJavaEncode(String filePath) {
        BytesEncodingDetect s = new BytesEncodingDetect();
        String fileCode = BytesEncodingDetect.javaname[s.detectEncoding(new File(filePath))];
        return fileCode;
    }

}