java实现CSV文件的导入导出操作

Posted 2022-11-27 xieweikun7

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 
    
	public static void main(String[] args) 
		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("F:/test.csv"), dataList);
		System.out.println(isSuccess);
	
	
    /**
     * 导出数据到csv文件
     * @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csv数据
	 * @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;