txtドキュメント操作(エクスポートとインポート)【キットシリーズ】

上一篇はCSVの导入を绍介して、今txtの导入を绍介して、両者はとても似ていて、多く绍介しないで、直接コードをつけました

package com.lwl.util;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.List;

/**
 * txt    (     )
 * @author [email protected]  
 * @create 2016-4-27   9:47:27
 * @version 1.0
 */
public class TextUtils {

	/**
	 *   
	 * @param file Txt  (  +   )，Txt          
	 * @param dataList    
	 * @param heads    
	 * @return
	 * @author [email protected]  
	 * @create 2016-4-27   9:49:49
	 */
	public static boolean exportTxt(File file, List dataList,String heads){
		FileOutputStream out=null;
		 try {
			out = new FileOutputStream(file);
		 return	exportTxtByOS(out, dataList, heads);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			return false;
		}
		
	}
	
	/**
	 *   
	 * @param out    
	 * @param dataList    
	 * @param heads    
	 * @return
	 * @author [email protected]  
	 * @create 2016-4-27   9:49:49
	 */
	 public static boolean exportTxtByOS(OutputStream out, List dataList,String heads){
	        boolean isSucess=false;
	        
	        OutputStreamWriter osw=null;
	        BufferedWriter bw=null;
	        try {
	            osw = new OutputStreamWriter(out);
	            bw =new BufferedWriter(osw);
	            //    
	            if(heads!=null&&!heads.equals("")){
	            	 bw.append(heads).append("\r");
	            }
	            //    
	            if(dataList!=null && !dataList.isEmpty()){
	                for(String data : dataList){
	                    bw.append(data).append("\r");
	                }
	            }
	            isSucess=true;
	        } catch (Exception e) {
	        	e.printStackTrace();
	            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;
	    }

	 /**
	     *   
	     * 
	     * @param file Txt  (  +  )
	     * @return
	     */
	    public static List importTxt(File file){
	        List dataList=new ArrayList();
	        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;
	    }

	 
	/**
	 *	   
	 * @param args
	 * @author [email protected]  
	 * @create 2016-4-27   10:11:46
	 */
	 public static void main(String[] args) {
		 //      
//		 List dataList=new ArrayList();
//	        dataList.add("1,  , ");
//	        dataList.add("2,  , ");
//	        dataList.add("3,  , ");
//	        File file = new File("E:/test");
//	        if(!file.exists()){
//	        	file.mkdir();
//	        }
//	        boolean isSuccess=TextUtils.exportTxt(new File("E:/test/ljq.txt"), dataList,"  ,  ,  ");
//	        System.out.println(isSuccess);
	        
	    //         
		 
		 List dataList= TextUtils.importTxt(new File("E:/test/ljq.txt"));
		 for (String string : dataList) {
			System.out.println(string);
		}
		 
	}
	 
}

テスト用例を添付しましたので、自分でテストしてください.直接プロジェクトで使用できます.