場(chǎng)景：導(dǎo)入導(dǎo)出CSV文件

1、CSVUtils類

package com.delta.gddx;import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.OutputStreamWriter; import java.util.ArrayList; import java.util.List;public class CSVUtils {/*** 導(dǎo)出* * @param file csv文件(路徑+文件名)，csv文件不存在會(huì)自動(dòng)創(chuàng)建* @param dataList 數(shù)據(jù)* @return*/public static boolean exportCsv(File file, List<String> dataList){boolean isSucess=false;FileOutputStream out=null;OutputStreamWriter osw=null;BufferedWriter bw=null;try {out = new FileOutputStream(file);osw = new OutputStreamWriter(out);bw =new BufferedWriter(osw);if(dataList!=null && !dataList.isEmpty()){for(String data : dataList){bw.append(data).append("\r");}}isSucess=true;} catch (Exception e) {isSucess=false;}finally{if(bw!=null){try {bw.close();bw=null;} catch (IOException e) {e.printStackTrace();} }if(osw!=null){try {osw.close();osw=null;} catch (IOException e) {e.printStackTrace();} }if(out!=null){try {out.close();out=null;} catch (IOException e) {e.printStackTrace();} }}return isSucess;}/*** 導(dǎo)入* * @param file csv文件(路徑+文件)* @return*/public static List<String> importCsv(File file){List<String> dataList=new ArrayList<String>();BufferedReader br=null;try { br = new BufferedReader(new FileReader(file));String line = ""; while ((line = br.readLine()) != null) { dataList.add(line);}}catch (Exception e) {}finally{if(br!=null){try {br.close();br=null;} catch (IOException e) {e.printStackTrace();}}}return dataList;} }
2、FeatureHandle測(cè)試類：

package com.delta.gddx;import java.io.File; import java.util.List;public class FeatureHandle {public static void main(String args[]){File file =new File("D:\\test.csv");List<String> lstrs= CSVUtils.importCsv(file);for(String str:lstrs){System.out.println(str);}File ofile=new File("D:\\testo.csv");CSVUtils.exportCsv(ofile, lstrs);} }

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