package com.abin.facade.ws.mail.function;import java.io.BufferedReader;import java.io.File;import java.io.FileOutputStream;import java.io.FileReader;import java.io.RandomAccessFile;public class FileOperation { /** * 创建文件 * @param fileName * @return */ public static boolean createFile(File fileName)throws Exception{ boolean flag=false; try{ if(!fileName.exists()){fileName.createNewFile();flag=true; } }catch(Exception e){ e.printStackTrace(); } return true; }/** * 读TXT文件内容 * @param fileName * @return */ public static String readTxtFile(File fileName)throws Exception{ String result=null; FileReader fileReader=null; BufferedReader bufferedReader=null; try{ fileReader=new FileReader(fileName); bufferedReader=new BufferedReader(fileReader); try{String read=null;while((read=bufferedReader.readLine())!=null){result=result+read+"\r\n";} }catch(Exception e){e.printStackTrace(); } }catch(Exception e){ e.printStackTrace(); }finally{ if(bufferedReader!=null){bufferedReader.close(); } if(fileReader!=null){fileReader.close(); } } System.out.println("读取出来的文件内容是："+"\r\n"+result); return result; }public static boolean writeTxtFile(String content,File fileName)throws Exception{ RandomAccessFile mm=null; boolean flag=false; FileOutputStream o=null; try { o = new FileOutputStream(fileName);o.write(content.getBytes("GBK"));o.close();// mm=new RandomAccessFile(fileName,"rw");// mm.writeBytes(content); flag=true; } catch (Exception e) { // TODO: handle exception e.printStackTrace(); }finally{ if(mm!=null){mm.close(); } } return flag; }public static void contentToTxt(String filePath, String content) {String str = new String(); //原有txt内容String s1 = new String();//内容更新try {File f = new File(filePath);if (f.exists()) {System.out.print("文件存在");} else {System.out.print("文件不存在");f.createNewFile();// 不存在则创建}BufferedReader input = new BufferedReader(new FileReader(f));while ((str = input.readLine()) != null) {s1 += str + "\n";}System.out.println(s1);input.close();s1 += content;BufferedWriter output = new BufferedWriter(new FileWriter(f));output.write(s1);output.close();} catch (Exception e) {e.printStackTrace();}}}
，妩媚动人，让我感受到了大自然的神奇。
