java file console

java目录操作2009-04-12 18:51import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
public class FileOperate {
      private String message;
      public FileOperate() {
      }
      /**
       * 读取文本文件内容
       * @param filePathAndName 带有完整绝对路径的文件名
       * @param encoding 文本文件打开的编码方式
       * @return 返回文本文件的内容
       */
      public String readTxt(String filePathAndName,String encoding) throws IOException{
       encoding = encoding.trim();
       StringBuffer str = new StringBuffer("");
       String st = "";
       try{
        FileInputStream fs = new FileInputStream(filePathAndName);
        InputStreamReader isr;
        if(encoding.equals("")){
         isr = new InputStreamReader(fs);
        }else{
         isr = new InputStreamReader(fs,encoding);
        }
        BufferedReader br = new BufferedReader(isr);
        try{
         String data = "";
         while((data = br.readLine())!=null){
           str.append(data+" ");
         }
        }catch(Exception e){
         str.append(e.toString());
        }
        st = str.toString();
       }catch(IOException es){
        st = "";
       }
       return st;    
      }

      /**
       * 新建目录
       * @param folderPath 目录
       * @return 返回目录创建后的路径
       */
      public String createFolder(String folderPath) {
          String txt = folderPath;
          try {
              java.io.File myFilePath = new java.io.File(txt);
              txt = folderPath;
              if (!myFilePath.exists()) {
                  myFilePath.mkdir();
              }
          }
          catch (Exception e) {
              message = "创建目录操作出错";
          }
          return txt;
      }
    
      /**
       * 多级目录创建
       * @param folderPath 准备要在本级目录下创建新目录的目录路径 例如 c:myf
       * @param paths 无限级目录参数，各级目录以单数线区分 例如 a|b|c
       * @return 返回创建文件后的路径 例如 c:myfa c
       */
      public String createFolders(String folderPath, String paths){
          String txts = folderPath;
          try{
              String txt;
              txts = folderPath;
              StringTokenizer st = new StringTokenizer(paths,"|");
              for(int i=0; st.hasMoreTokens(); i++){
                      txt = st.nextToken().trim();
                      if(txts.lastIndexOf("/")!=-1){
                          txts = createFolder(txts+txt);
                      }else{
                          txts = createFolder(txts+txt+"/");   
                      }
              }
         }catch(Exception e){
             message = "创建目录操作出错！";
         }
          return txts;
      }

    
      /**
       * 新建文件
       * @param filePathAndName 文本文件完整绝对路径及文件名
       * @param fileContent 文本文件内容
       * @return
       */
      public void createFile(String filePathAndName, String fileContent) {
     
          try {
              String filePath = filePathAndName;
              filePath = filePath.toString();
              File myFilePath = new File(filePath);
              if (!myFilePath.exists()) {
                  myFilePath.createNewFile();
              }
              FileWriter resultFile = new FileWriter(myFilePath);
              PrintWriter myFile = new PrintWriter(resultFile);
              String strContent = fileContent;
              myFile.println(strContent);
              myFile.close();
              resultFile.close();
          }
          catch (Exception e) {
              message = "创建文件操作出错";
          }
      }


      /**
       * 有编码方式的文件创建
       * @param filePathAndName 文本文件完整绝对路径及文件名
       * @param fileContent 文本文件内容
       * @param encoding 编码方式 例如 GBK 或者 UTF-8
       * @return
       */
      public void createFile(String filePathAndName, String fileContent, String encoding) {
     
          try {
              String filePath = filePathAndName;
              filePath = filePath.toString();
              File myFilePath = new File(filePath);
              if (!myFilePath.exists()) {
                  myFilePath.createNewFile();
              }
              PrintWriter myFile = new PrintWriter(myFilePath,encoding);
              String strContent = fileContent;
              myFile.println(strContent);
              myFile.close();
          }
          catch (Exception e) {
              message = "创建文件操作出错";
          }
      }


      /**
       * 删除文件
       * @param filePathAndName 文本文件完整绝对路径及文件名
       * @return Boolean 成功删除返回true遭遇异常返回false
       */
      public boolean delFile(String filePathAndName) {
       boolean bea = false;
          try {
              String filePath = filePathAndName;
              File myDelFile = new File(filePath);
              if(myDelFile.exists()){
               myDelFile.delete();
               bea = true;
              }else{
               bea = false;
               message = (filePathAndName+"删除文件操作出错");
              }
          }
          catch (Exception e) {
              message = e.toString();
          }
          return bea;
      }
    


      /**
       * 删除文件夹
       * @param folderPath 文件夹完整绝对路径
       * @return
       */
      public void delFolder(String folderPath) {
          try {
              delAllFile(folderPath); //删除完里面所有内容
              String filePath = folderPath;
              filePath = filePath.toString();
              java.io.File myFilePath = new java.io.File(filePath);
              myFilePath.delete(); //删除空文件夹
          }
          catch (Exception e) {
              message = ("删除文件夹操作出错");
          }
      }
    
    
      /**
       * 删除指定文件夹下所有文件
       * @param path 文件夹完整绝对路径
       * @return
       * @return
       */
      public boolean delAllFile(String path) {
       boolean bea = false;
          File file = new File(path);
          if (!file.exists()) {
              return bea;
          }
          if (!file.isDirectory()) {
              return bea;
          }
          String[] tempList = file.list();
          File temp = null;
          for (int i = 0; i < tempList.length; i++) {
              if (path.endsWith(File.separator)) {
                  temp = new File(path + tempList[i]);
              }else{
                  temp = new File(path + File.separator + tempList[i]);
              }
              if (temp.isFile()) {
                  temp.delete();
              }
              if (temp.isDirectory()) {
                  delAllFile(path+"/"+ tempList[i]);//先删除文件夹里面的文件
                  delFolder(path+"/"+ tempList[i]);//再删除空文件夹
                  bea = true;
              }
          }
          return bea;
      }


      /**
       * 复制单个文件
       * @param oldPathFile 准备复制的文件源
       * @param newPathFile 拷贝到新绝对路径带文件名
       * @return
       */
      public void copyFile(String oldPathFile, String newPathFile) {
          try {
              int bytesum = 0;
              int byteread = 0;
              File oldfile = new File(oldPathFile);
              if (oldfile.exists()) { //文件存在时
                  InputStream inStream = new FileInputStream(oldPathFile); //读入原文件
                  FileOutputStream fs = new FileOutputStream(newPathFile);
                  byte[] buffer = new byte[1444];
                  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) {
              message = ("复制单个文件操作出错");
          }
      }
    

      /**
       * 复制整个文件夹的内容
       * @param oldPath 准备拷贝的目录
       * @param newPath 指定绝对路径的新目录
       * @return
       */
      public void copyFolder(String oldPath, String newPath) {
          try {
              new File(newPath).mkdirs(); //如果文件夹不存在 则建立新文件夹
              File a=new File(oldPath);
              String[] file=a.list();
              File temp=null;
              for (int i = 0; i < file.length; i++) {
                  if(oldPath.endsWith(File.separator)){
                      temp=new File(oldPath+file[i]);
                  }else{
                      temp=new File(oldPath+File.separator+file[i]);
                  }
                  if(temp.isFile()){
                      FileInputStream input = new FileInputStream(temp);
                      FileOutputStream output = new FileOutputStream(newPath + "/" +
                      (temp.getName()).toString());
                      byte[] b = new byte[1024 * 5];
                      int len;
                      while ((len = input.read(b)) != -1) {
                          output.write(b, 0, len);
                      }
                      output.flush();
                      output.close();
                      input.close();
                  }
                  if(temp.isDirectory()){//如果是子文件夹
                      copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
                  }
              }
          }catch (Exception e) {
              message = "复制整个文件夹内容操作出错";
          }
      }


      /**
       * 移动文件
       * @param oldPath
       * @param newPath
       * @return
       */
      public void moveFile(String oldPath, String newPath) {
          copyFile(oldPath, newPath);
          delFile(oldPath);
      }
    

      /**
       * 移动目录
       * @param oldPath
       * @param newPath
       * @return
       */
      public void moveFolder(String oldPath, String newPath) {
          copyFolder(oldPath, newPath);
          delFolder(oldPath);
      }
      public String getMessage(){
          return this.message;
      }
}