import java.io.InputStream;import java.io.OutputStream;import java.io.IOException;public class FileTrans {  private String head = "";  private String hostname = "";  private String FilePath = "";  private String hdfsFilePath = "";  private HDFSUtil hdfsutil = null;  private FtpClient ftp;  private HttpUtil http;  public void setFilePath(String FilePath){    this.FilePath = FilePath;  }  public String getFilePath(String FilePath){    return this.FilePath;  }  public void sethdfsFilePath(String hdfsFilePath){    this.hdfsFilePath = hdfsFilePath;  }  public String gethdfsFilePath(String hdfsFilePath){    return this.hdfsFilePath;  }  public void setHostName(String hostname){    this.hostname = hostname;  }  public String getHostName(){    return this.hostname;  }  public void setHead(String head){    this.head = head;  }  public String getHead(){    return this.head;  }  public FileTrans(String head, String hostname, String filepath, String hdfsnode,String hdfsFilepath){    this.head = head;    this.hostname = hostname;    this.FilePath = filepath;    this.hdfsFilePath = hdfsFilepath;    if (head.equals("ftp") && hostname != ""){      this.ftp = new FtpClient(this.hostname);    }    if ((head.equals("http") || head .equals("https")) && hostname != ""){      String httpurl = head + "://" + hostname + "/" + filepath;      this.http = new HttpUtil(httpurl);    }    if (hdfsnode != ""){      this.hdfsutil = new HDFSUtil(hdfsnode);    }    this.hdfsutil.setHdfsPath(this.hdfsFilePath);    this.hdfsutil.setFilePath(hdfsutil.getHdfsNode()+hdfsutil.getHdfsPath());    this.hdfsutil.setHadoopSite("./hadoop-site.xml");    this.hdfsutil.setHadoopDefault("./hadoop-default.xml");    this.hdfsutil.setConfigure(false);  }  public static void main(String[] args) throws IOException{    String head = "";    String hostname = "";    String filepath = "";    String hdfsfilepath = "";    String hdfsnode = "";    String localpath = "";    InputStream inStream = null;    int samplelines = 0;    try{      head = args[0];         //遠端服務器類型，http還是ftp      hostname = args[1];       //遠端服務器hostname      filepath = args[2];       //遠端文件路徑      hdfsnode = args[3];       //hdfs的機器名，不帶hdfs開頭      hdfsfilepath = args[4];     //hdfs的文件路徑      localpath = args[5];       //如果需要在本地保存一份的話，輸入本地的路徑，不保存，傳入空格或者samplelines傳入0      samplelines = Integer.parseInt(args[6]); //保存在本地的話，保存前N行，如果不保存，填0    }catch (Exception e){      System.out.println("[FileTrans]:input args error!");      e.printStackTrace();    }    FileTrans filetrans = new FileTrans(head, hostname, filepath, hdfsnode,hdfsfilepath);    if (filetrans == null){      System.out.println("filetrans null");      return;    }    if (filetrans.ftp == null && head.equals("ftp")){      System.out.println("filetrans ftp null");      return;    }    if (filetrans.http == null && (head.equals("http") || head.equals("https"))){      System.out.println("filetrans ftp null");      return;    }    try{      if (head.equals("ftp")){        inStream = filetrans.ftp.getStream(filepath);        if (samplelines > 0){          filetrans.ftp.writeStream(inStream, localpath, samplelines);        }      }      else{        inStream = filetrans.http.getStream(head + "://" + hostname + "/" + filepath);        if (samplelines > 0){          filetrans.http.downLoad(head + "://" + hostname + "/" + filepath, localpath, samplelines);        }      }      filetrans.hdfsutil.upLoad(inStream, filetrans.hdfsutil.getFilePath());       if (head == "ftp"){        filetrans.ftp.disconnect();      }    }catch (IOException e){      System.out.println("[FileTrans]: file trans failed!");      e.printStackTrace();    }    System.out.println("[FileTrans]: file trans success!");  }}