用Java将一文件夹下所有文本文件统一写入到一个文本文件中 

  1 /**
  2  * 
  3  */
  4 package com.kk.test;
  5 
  6 import java.io.*;
  7 import java.util.*;
  8 
  9 /**
 10  * @author Admin
 11  * 
 12  */
 13 public class ReadTxts2OneTxt {
 14     
 15     public static final String encoding = "gbk";
 16     
 17     /**
 18      * @param args
 19      */
 20     public static void main(String[] args) {
 21 
 22 
 23     File dir = new File("E:\\");
 24     ArrayList<File> allTxtFiles = new ArrayList<File>();
 25     getAlltxtFiles(dir, allTxtFiles);
 26 
 27     File destFile = new File("C:\\Users\\Admin\\Desktop\\all.txt");
 28     
 29     for (File srcFile : allTxtFiles) {
 30         ArrayList<String> lines = new ArrayList<String>();
 31         readTxt(srcFile, lines);
 32         save(destFile, lines);
 33     }
 34     
 35     
 36     }
 37 
 38     public static void readTxt(File file, ArrayList<String> lines) {
 39 
 40     FileInputStream fis = null;
 41     InputStreamReader sr = null;
 42     BufferedReader br = null;
 43     try {
 44         fis = new FileInputStream(file);
 45         sr = new InputStreamReader(fis,encoding);
 46         br = new BufferedReader(sr);
 47         String line = null;
 48         while ((line = br.readLine()) != null) {
 49         lines.add(line + System.getProperty("line.separator"));
 50         }
 51     } catch (FileNotFoundException e) {
 52         e.printStackTrace();
 53     } catch (IOException e) {
 54         e.printStackTrace();
 55     } finally {
 56         if (br != null) {
 57         try {
 58             br.close();
 59         } catch (IOException e) {
 60             e.printStackTrace();
 61         }
 62         }
 63         if (sr != null) {
 64         try {
 65             sr.close();
 66         } catch (IOException e) {
 67             e.printStackTrace();
 68         }
 69         }
 70         if (fis != null) {
 71         try {
 72             fis.close();
 73         } catch (IOException e) {
 74             e.printStackTrace();
 75         }
 76         }
 77     }// finally
 78     }
 79 
 80     /**
 81      * @param line
 82      */
 83     public static void save(File file, ArrayList<String> lines) {
 84 
 85     FileOutputStream fos = null;
 86     OutputStreamWriter sw = null;
 87     BufferedWriter bw = null;
 88     try {
 89         fos = new FileOutputStream(file, true);
 90         sw = new OutputStreamWriter(fos,encoding);
 91         bw = new BufferedWriter(sw);
 92         for (String line : lines) {
 93         bw.write(line);
 94         }
 95     } catch (Exception e) {
 96         e.printStackTrace();
 97     } finally {
 98         if (bw != null) {
 99         try {
100             bw.close();
101         } catch (IOException e) {
102             e.printStackTrace();
103         }
104         }
105         if (sw != null) {
106         try {
107             sw.close();
108         } catch (IOException e) {
109             e.printStackTrace();
110         }
111         }
112         if (fos != null) {
113         try {
114             fos.close();
115         } catch (IOException e) {
116             e.printStackTrace();
117         }
118         }
119     }// finally
120     }
121 
122     public static ArrayList<File> getAlltxtFiles(File dir, ArrayList<File> txtFiles) {
123     File[] files = dir.listFiles();
124     for (File file : files) {
125         if (file.isDirectory()) {
126         getAlltxtFiles(file,txtFiles);
127         } else if (file.getName().endsWith(".java") || file.getName().endsWith(".jsp")) {
128         txtFiles.add(file);
129         System.out.println(file.getName());
130         }
131     }
132     return txtFiles;
133     }
134 
135 }

 

posted on 2019-12-13 14:36  Krise  阅读(284)  评论(0)    收藏  举报

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