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package com.parami.utils; 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; /** * CSV操作(导出和导入)*/ public class CSVUtils { /** * 导出 * * @param file 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 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; } /** * 导入 * * @param file csv文件(路径+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、CSV导入/导出测试
package junit.test;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import com.parami.utils.CSVUtils;
/**
* CSV操作(导出和导入)
*/
public class CsvTest {
/**
* CSV导出
*
* @throws Exception
*/
@Test
public void exportCsv() {
List<String> dataList=new ArrayList<String>();
dataList.add("1,张三,男");
dataList.add("2,李四,男");
dataList.add("3,小红,女");
boolean isSuccess=CSVUtils.exportCsv(new File("D://test.csv"), dataList);
System.out.println(isSuccess);
}
/**
* CSV导入
*
* @throws Exception
*/
@Test
public void importCsv() {
List<String> dataList=CSVUtils.importCsv(new File("D://test.csv"));
if(dataList!=null && !dataList.isEmpty()){
for(String data : dataList){
System.out.println(data);
}
}
}
}
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原文地址：http://www.cnblogs.com/jack1208-rose0203/p/5683311.html
