Java创建csv文件

package com.vefan.csv;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import com.vefan.common.util.FileUtils;

public class CsvWriter
{

	public static void main(String args[]){
		CsvWriter cw = new CsvWriter();
		String csvFile = "E:/workspace/JavaApp/csv/createCSV.csv";
		cw.createCSV(csvFile);
		
		String localPath = "E:/workspace/JavaApp/csv/";
		String fName = "createCsvByList.csv";
		String sTitle = "ID,NAME,SEX,EMAIL,TEL";
		List listSource = new ArrayList();
		listSource.add("1,tomcat,male,[email protected],1383838438");
		listSource.add("2,Jboss,male,[email protected],1484848748");
		
		cw.createCSVByList(listSource, sTitle, localPath, fName);
	}
	
	/**
	 * 复制csv文件
	 * @param source 源文件
	 * @param dest   目标文件
	 * */
	public void copyCSV(String source, String dest){
		try
		{
			FileChannel in = new FileInputStream(source).getChannel();
			FileChannel out = new FileOutputStream(dest).getChannel();
			
//			in.transferTo(0, in.size(), out);
			out.transferFrom(in, 0, in.size());
			
			in.close();
			out.close();
		} catch (Exception e)
		{
			e.printStackTrace();
		}
	}
	
	/**
	 * 创建csv文件
	 * @param csvFile csv完整文件名
	 * */
	public void createCSV(String csvFile){
		FileWriter fw = null;
		try
		{
			fw = new FileWriter(csvFile);
			fw.write("ID,CODE,NAME,EMAIL,TEL\r\n");
			fw.write("1,system,上将,[email protected],15935785489\r\n");
			fw.write("2,sysman,中尉,[email protected],15687596324\r\n");
			fw.write("3,sys,少尉,[email protected],15826589752\r\n");
			
			fw.flush();
			fw.close();
		} catch (IOException e)
		{
			e.printStackTrace();
		}finally{
			if(null != fw){
				try
				{
					fw.close();
				} catch (IOException e)
				{
					e.printStackTrace();
				}
			}
		}
		
	}
	
	/**
	 * 创建csv文件
	 * @param listSource 行数据
	 * @param sTitle     字段名
	 * @param localPath  目录路径
	 * @param fName      文件名
	 * */
	public void createCSVByList(List listSource, String sTitle, String localPath, String fName){
		ByteArrayOutputStream out = new ByteArrayOutputStream();
		FileOutputStream fos = null;
		try
		{
			out.write(sTitle.getBytes());
			out.write(",".getBytes());
			out.write("\n".getBytes());
			
			Iterator it = listSource.iterator();
			while(it.hasNext()){
				String value = (String)it.next();
				out.write(value.getBytes());
				out.write(",".getBytes());    //以逗号为分隔符
				out.write("\n".getBytes());   //换行
			}
			//没有目录，先生成目录
			FileUtils fileTool = new FileUtils();
			fileTool.newFolder(localPath);
			
			File newfile = new File(localPath,fName);
			
			fos = new FileOutputStream(newfile);
			fos.write(out.toByteArray());
			
			fos.flush();
			out.close();
			fos.close();
		} catch (IOException e)
		{
			e.printStackTrace();
		}finally{
			try
			{
				if(null != out) out.close();
				if(null != fos) fos.close();
			} catch (IOException e)
			{
				e.printStackTrace();
			}
		}
		System.out.println("生成"+fName+"完成");
	}
	
}