FileOperation

来源：互联网发布：开淘宝网店安全不编辑：程序博客网时间：2024/05/01 21:01

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;

public class FileOperation {
/**
     * 删除文件
     * @param filePathAndName String 文件路径及名称如c:/abc.txt
     * @param fileContent String
     * @return boolean
     */
   public static void delFile(String filePathAndName) {
       try {
           String filePath = filePathAndName;
           filePath = filePath.toString();
           java.io.File myDelFile = new java.io.File(filePath);
           myDelFile.delete();

       }
       catch (Exception e) {
           System.out.println("删除文件操作出错");
           e.printStackTrace();

}

/**
     * 复制单个文件
     * @param oldPath String 原文件路径如：
     * @param newPath String 复制后路径如：
     * @return boolean
     */
   public static void copyFile(String oldPath, String newPath) {
       try {
           int bytesum = 0;
           int byteread = 0;
           java.io.File oldfile = new File(oldPath);
           if (oldfile.exists()) { //文件存在时
               InputStream inStream = new FileInputStream(oldPath); //读入原文件
               FileOutputStream fs = new FileOutputStream(newPath);
               byte[] buffer = new byte[1444];
               int length;
               while ( (byteread = inStream.read(buffer)) != -1) {
                   bytesum += byteread; //字节数文件大小
                   System.out.println(bytesum);
                   fs.write(buffer, 0, byteread);
               }
               inStream.close();
           }
       }
       catch (Exception e) {
           System.out.println("复制单个文件操作出错");
           e.printStackTrace();

}

   }
   /**
    *
    * @param username
    * @param password
    * @param savepath
    */

public static void writeFile(String username, String password,String savepath,String sex,String age,String email,String resume,String alias) {

         String pathandfileName=savepath+"/"+username;
       File file = new File(pathandfileName);
       BufferedWriter writer = null;
       try {
       System.out.println("以行为单位读取文件内容，一次写一整行：");
       writer = new java.io.BufferedWriter(new java.io.FileWriter(file));
       writer.write("[Main]");
       writer.newLine();
       writer.write("Alias="+alias);
       writer.newLine();
       writer.write("Member=0");
       writer.newLine();
       writer.write("Credit=0");
       writer.newLine();
       writer.write("Grade=0");
       writer.newLine();
       writer.write("Age="+age);
       writer.newLine();
       writer.write("Sex="+sex);
       writer.newLine();
       writer.write("Password="+password);
       writer.newLine();
       writer.write("Email="+email);
       writer.newLine();
       writer.write("Oicq=");
       writer.newLine();
       writer.write("Icon=");
       writer.newLine();
       writer.write("Photo=http://");
       writer.newLine();
       writer.write("Resume="+resume);
       writer.newLine();
       writer.write("Question=我的生日");
       writer.newLine();
       writer.write("Answer=");
       writer.newLine();
       writer.write("Status=1");
       writer.newLine();
       writer.close();
       } catch (IOException e) {
       e.printStackTrace();
       } finally {
       if (writer != null){
       try {
        writer.close();
       } catch (IOException e1) {
       }
       }
       }

}
/**
   *
   * @param username
   * @param password
   * @param savepath
   */

public static void modifyFile(String username, String password,String savepath,String age,String sex,String email,String resume,String alias) {

        String pathandfileName=savepath+"/"+username;
        String temp="";
        try{
        BufferedInputStream bis=new BufferedInputStream(new FileInputStream(new File(pathandfileName)));
        byte b[]=new byte[1024*1024];
        int length=bis.read(b);
        temp=new String(b,0,length);
        bis.close();
        String str[]=temp.split("/n");
        for(int i=0;i<str.length;i++){
        if(i==1)//
             {
           str[1]="Alias="+alias;
              }

          if(i==5)//
          {
        str[5]="Age="+age;
           }
          if(i==6)//
          {
        str[6]="Sex="+sex;
           }
          if(i==7)//
          {
        str[7]="Password="+password;
           }
          if(i==8)//
          {
        str[8]="Email="+email;
           }
          if(i==12)//
          {
        str[12]="Resume="+resume;
           }
          System.out.print(str[i]);
        }

        BufferedWriter writer = null;
        writer = new java.io.BufferedWriter(new java.io.FileWriter(pathandfileName));

        for(int i=0;i<str.length;i++)
        {
        writer.write(str[i]);
        writer.newLine();

        }

        writer.close();

        }catch(Exception e)
        {

        }

}
/**
   *
   * @param username
   * @param password
   * @param savepath
   */

public static void readFile(String username, String password,String savepath) {

        String pathandfileName=savepath+"/"+username;
      File file = new File(pathandfileName);
      BufferedReader reader = null;
      try {
      System.out.println("以行为单位读取文件内容，一次读一整行：");
      reader = new BufferedReader(new FileReader(file));
      String tempString = null;
      int line = 1;
      //一次读入一行，直到读入null为文件结束
      while ((tempString = reader.readLine()) != null){
      //显示行号
      System.out.println("line " + line + ": " + tempString);
      line++;
      }
      reader.close();
      } catch (IOException e) {
      e.printStackTrace();
      } finally {
      if (reader != null){
      try {
      reader.close();
      } catch (IOException e1) {
      }
      }
      }

}