FTP Upload Download Tool class

Import Java.io.ByteArrayOutputStream;
Import Java.io.File;
Import Java.io.FileInputStream;
Import Java.io.FileOutputStream;
Import java.io.IOException;
Import Java.io.InputStream;
Import Java.io.OutputStream;

Import java.net.SocketException;
Import org.apache.commons.net.ftp.FTPClient;
Import Org.apache.commons.net.ftp.FTPFile;
Import Org.slf4j.Logger;

Import Org.slf4j.LoggerFactory; /** * @khj * @title ftputils * @Description: FTP upload Download Tool class * @time */public class Ftputils {/** * log *
    
    /private static Logger Logger = Loggerfactory.getlogger (Ftputils.class);
    
    private static ftpclient ftp;
     /** * Connect FTP < A word function description > < function details > * * @param addr * @param port * @param username * @param password * @return * @see [Class, Class # method, Class # Member] */public static Boolean connect (String addr, int port
        
        , string Username, string password) {ftp = new ftpclient (); try {FTP. Connect (addr, 21);
            
        Ftp.login (username, password);
        } catch (SocketException e) {e.printstacktrace ();
        } catch (IOException e) {e.printstacktrace ();
    } return ftp.isconnected (); } @SuppressWarnings ("unused") private void upload (file file, String path) {logger.info ("file.is
        
        Directory (): {} "+ file.isdirectory ());
                try {if (File.isdirectory ()) {ftp.makedirectory (File.getname ());
                Ftp.changeworkingdirectory (File.getname ());
                string[] files = file.list (); for (int i = 0; i < files.length; i++) {File File1 = new File (File.getpath () + "\ \
                    "+ files[i]);
                        if (File1.isdirectory ()) {upload (file1, path); Ftp.changetopareNtdirectory (); } else {file File2 = new File (File.getpath () + "\ \" + fil
                        Es[i]);
                        FileInputStream input = new FileInputStream (file2);
                        Ftp.storefile (File2.getname (), input);
                    Input.close ();
                
                }}} else {file File2 = new File (File.getpath ()); System.out.println ("File.getpath ():" + file.getpath () + "|
                
                File2.getname (): "+ file2.getname ());
                
                InputStream input = new FileInputStream (file2);
                Ftp.changeworkingdirectory (path);
                
                Ftp.storefile (File2.getname (), input); Input.close (); Close the input stream ftp.logout (); Exit Connection}} catch (Exception e) {logger.erRor (E.getmessage ()); }} @SuppressWarnings ("static-access") public static byte[] DownloadFile (String fileName) {b
        yte[] bytes = NULL;
            
            try {ftp.changeworkingdirectory ("");
            
            List all files under this directory ftpfile[] fs = Ftp.listfiles (FileName);
                Traverse all files to locate the specified file for (Ftpfile file:fs) {if (File.getname (). Equals (FileName))
                    {///files LocalFile = new file (LocalPath) according to absolute path initialization;
                    if (!localfile.exists ())//{//Localfile.createnewfile (); 
                    }/////output stream//outputstream OS = new FileOutputStream (localfile);
                    InputStream in = null;
                    Download file ftp.setbuffersize (1024); Ftp.setcontrolencoding ("UTF-8 ");
                    Ftp.setfiletype (Ftp.binary_file_type);
                    
                    Download files to LocalFile//Ftp.retrievefile (Ff.getname (), OS);
                    String remoteabsolutefile = File.getname ();
                    Remoteabsolutefile = new String (remoteabsolutefile.getbytes ("UTF-8"), "iso-8859-1");
                    
                    in = Ftp.retrievefilestream (Remoteabsolutefile);
                
                    bytes = Input2byte (in);
                    
                    System.out.println ("Download succeeded!" + bytes.length);
                In.close (); }} ftp.logout ();
        Exit connection} catch (Exception e) {e.printstacktrace ();
    } return bytes; }/** * byte[] go to file * * @param bytes * @param path * @return * @see [Class, Class # method, Class # into */public static void Bytetofile (byte[] bytes, String path) {try {//] Initialize file LocalFile = new (path) according to Absolute path;
            if (!localfile.exists ()) {localfile.createnewfile ();
            
            }//output stream OutputStream OS = new FileOutputStream (localfile);
            
            Os.write (bytes);
        Os.close ();
        } catch (Exception e) {e.printstacktrace ();
     }}/** * file to byte[] < A word function description > < function details > * * @param instream * @return
        * @throws IOException * @see [Class, Class # method, Class # Member] */public static byte[] Input2byte (InputStream instream)
        Throws IOException {Bytearrayoutputstream Swapstream = new Bytearrayoutputstream ();
        byte[] buff = new byte[100];
        int rc = 0;
        while (rc = instream.read (buff, 0,)) > 0) {swapstream.write (buff, 0, RC); } byte[] in2b = Swapstream.tobytearray ();
        
        Swapstream.close ();
    return in2b; } public static void Getphoto (String filepath,string localPath) {ftputils.connect (readpropertiesutil S.getparamvalue ("Ftp.host"), +, Readpropertiesutils.getparamvalue ("Ftp.username"), Re
        Adpropertiesutils.getparamvalue ("Ftp.password"));
        Logger.info ("");
        
        byte[] bytes = Ftputils.downloadfile (FilePath);
    Ftputils.bytetofile (bytes, localPath); } public static byte[] Getphoto (String filePath) {ftputils.connect (readpropertiesutils.getparamvalue ("Ftp.host"), Readpropertiesutils.getparamvalue ("Ftp.username"), Readpropertiesuti
        Ls.getparamvalue ("Ftp.password"));
        Logger.info ("");
        
        byte[] bytes = Ftputils.downloadfile (FilePath);
        Ftputils.bytetofile (bytes, localPath);
    return bytes;
    
    }public static void Main (string[] args) throws Exception {String FilePath = "T_zdry_idx_jxxx_
        
        Inc/010020090902731604.jpg ";
        
        String LocalPath = "D:\\ccc.jpg";
    Ftputils.getphoto (FilePath, LocalPath);
 }
}