fstp下载转载的文章，这个很好用，只需要修改你的路径还有文件名就可以了

                                            

                

本文主要是讲解Android服务器之SFTP服务器的上传下载功能，也是对之前所做项目的整理。

主要的代码块如下所示，对代码中相应地方稍作调整，复制粘贴到项目即可以使用，代码中会提供相应注释。

1.MainActivity

    
    
public class MainActivity extends Activity implements OnClickListener{
    private final  String TAG= “MainActivity”;
    private Button buttonUpLoad = ;
    private Button buttonDownLoad = ;
    private SFTPUtils sftp;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_sftpmain);
      init();
  }

   public void init(){
         //获取控件对象
      buttonUpLoad = (Button) findViewById(R.id.button_upload);
      buttonDownLoad = (Button) findViewById(R.id.button_download);
       //设置控件对应相应函数
      buttonUpLoad.setOnClickListener( this);
      buttonDownLoad.setOnClickListener( this);
      sftp = new SFTPUtils( “SFTP服务器IP”, “用户名”, “密码”);
  }
     public void onClick(final View v) {
           // TODO Auto-generated method stub
         new Thread() {
             @Override
             public void run() {
                   //这里写入子线程需要做的工作

           switch (v.getId()) {
                   case R.id.button_upload: {
                   //上传文件
                  Log.d(TAG, “上传文件”);
                  String localPath = “sdcard/xml/”;
                  String remotePath = “test”;
                  sftp.connect();
                  Log.d(TAG, “连接成功”);
                  sftp.uploadFile(remotePath, “APPInfo.xml”, localPath, “APPInfo.xml”);
                  Log.d(TAG, “上传成功”);
                  sftp.disconnect();
                  Log.d(TAG, “断开连接”);
                }
                       break;

                   case R.id.button_download: {
                           //下载文件
                         Log.d(TAG, “下载文件”);
                         String localPath = “sdcard/download/”;
                         String remotePath = “test”;
                         sftp.connect();
                         Log.d(TAG, “连接成功”);
                         sftp.downloadFile(remotePath, “APPInfo.xml”, localPath, “APPInfo.xml”);
                         Log.d(TAG, “下载成功”);
                         sftp.disconnect();
                         Log.d(TAG, “断开连接”);

                        }
                         break;
                   default:
                         break;
          }
      }
         }.start();
         };
}
    
    

2.SFTPUtils

    
    
public class SFTPUtils {

    private String TAG= "SFTPUtils";
    private String host;
    private String username;
    private String password;
    private int port = 22;
    private ChannelSftp sftp = ;
    private Session sshSession = ;

    public SFTPUtils (String host, String username, String password) {
        this.host = host;
        this.username = username;
        this.password = password;
   }

    /**
    * connect server via sftp
    */
    public ChannelSftp connect() {
      JSch jsch = new JSch();
       try {
          sshSession = jsch.getSession(username, host, port);
          sshSession.setPassword(password);
          Properties sshConfig = new Properties();
          sshConfig.put( "StrictHostKeyChecking", "no");
          sshSession.setConfig(sshConfig);
          sshSession.connect();
          Channel channel = sshSession.openChannel( "sftp");
           if (channel != ) {
              channel.connect();
          } else {
              Log.e(TAG, "channel connecting failed.");
          }
          sftp = (ChannelSftp) channel;
      } catch (JSchException e) {
          e.printStackTrace();
      }
       return sftp;
  }


/**
* 断开服务器
*/
    public void disconnect() {
        if ( this.sftp != ) {
            if ( this.sftp.isConnected()) {
                this.sftp.disconnect();
               Log.d(TAG, "sftp is closed already");
           }
       }
        if ( this.sshSession != ) {
            if ( this.sshSession.isConnected()) {
                this.sshSession.disconnect();
               Log.d(TAG, "sshSession is closed already");
           }
       }
   }

    /**
    * 单个文件上传
    * @param remotePath
    * @param remoteFileName
    * @param localPath
    * @param localFileName
    * @return
    */
    public boolean uploadFile(String remotePath, String remoteFileName,
           String localPath, String localFileName) {
       FileInputStream in = ;
        try {
           createDir(remotePath);
           System.out.println(remotePath);
           File file = new File(localPath + localFileName);
           in = new FileInputStream(file);
           System.out.println(in);
           sftp.put(in, remoteFileName);
           System.out.println(sftp);
            return true;
       } catch (FileNotFoundException e) {
           e.printStackTrace();
       } catch (SftpException e) {
           e.printStackTrace();
       } finally {
            if (in != ) {
                try {
                   in.close();
               } catch (IOException e) {
                   e.printStackTrace();
               }
           }
       }
        return false;
   }

    /**
    * 批量上传
    * @param remotePath
    * @param localPath
    * @param del
    * @return
    */
    public boolean bacthUploadFile(String remotePath, String localPath,
            boolean del) {
        try {
           File file = new File(localPath);
           File[] files = file.listFiles();
            for ( int i = 0; i < files.length; i++) {
                if (files[i].isFile()
                       && files[i].getName().indexOf( "bak") == - 1) {
                    synchronized(remotePath){
                        if ( this.uploadFile(remotePath, files[i].getName(),
                           localPath, files[i].getName())
                           && del) {
                       deleteFile(localPath + files[i].getName());
                       }
                   }
               }
           }
            return true;
       } catch (Exception e) {
           e.printStackTrace();
       } finally {
            this.disconnect();
       }
        return false;

   }

    /**
    * 批量下载文件
    *
    * @param remotPath
    *            远程下载目录(以路径符号结束)
    * @param localPath
    *            本地保存目录(以路径符号结束)
    * @param fileFormat
    *            下载文件格式(以特定字符开头,为空不做检验)
    * @param del
    *            下载后是否删除sftp文件
    * @return
    */
    @SuppressWarnings( "rawtypes")
    public boolean batchDownLoadFile(String remotPath, String localPath,
           String fileFormat, boolean del) {
        try {
           connect();
           Vector v = listFiles(remotPath);
            if (v.size() > 0) {

               Iterator it = v.iterator();
                while (it.hasNext()) {
                   LsEntry entry = (LsEntry) it.next();
                   String filename = entry.getFilename();
                   SftpATTRS attrs = entry.getAttrs();
                    if (!attrs.isDir()) {
                        if (fileFormat != && ! "".equals(fileFormat.trim())) {
                            if (filename.startsWith(fileFormat)) {
                                if ( this.downloadFile(remotPath, filename,
                                       localPath, filename)
                                       && del) {
                                   deleteSFTP(remotPath, filename);
                               }
                           }
                       } else {
                            if ( this.downloadFile(remotPath, filename,
                                   localPath, filename)
                                   && del) {
                               deleteSFTP(remotPath, filename);
                           }
                       }
                   }
               }
           }
       } catch (SftpException e) {
           e.printStackTrace();
       } finally {
            this.disconnect();
       }
        return false;
   }

    /**
    * 单个文件下载
    * @param remotePath
    * @param remoteFileName
    * @param localPath
    * @param localFileName
    * @return
    */
    public boolean downloadFile(String remotePath, String remoteFileName,
           String localPath, String localFileName) {
        try {
           sftp.cd(remotePath);
           File file = new File(localPath + localFileName);
           mkdirs(localPath + localFileName);
           sftp.get(remoteFileName, new FileOutputStream(file));
            return true;
       } catch (FileNotFoundException e) {
           e.printStackTrace();
       } catch (SftpException e) {
           e.printStackTrace();
       }

        return false;
   }

    /**
    * 删除文件
    * @param filePath
    * @return
    */
    public boolean deleteFile(String filePath) {
       File file = new File(filePath);
            if (!file.exists()) {
                return false;
           }
            if (!file.isFile()) {
                return false;
           }
            return file.delete();
       }

    public boolean createDir(String createpath) {
        try {
            if (isDirExist(createpath)) {
                this.sftp.cd(createpath);
               Log.d(TAG,createpath);
                return true;
           }
           String pathArry[] = createpath.split( "/");
           StringBuffer filePath = new StringBuffer( "/");
            for (String path : pathArry) {
                if (path.equals( "")) {
                    continue;
               }
               filePath.append(path + "/");
                    if (isDirExist(createpath)) {
                       sftp.cd(createpath);
                   } else {
                       sftp.mkdir(createpath);
                       sftp.cd(createpath);
                   }
               }
                this.sftp.cd(createpath);
                  return true;
           } catch (SftpException e) {
               e.printStackTrace();
           }
            return false;
       }

    /**
    * 判断目录是否存在
    * @param directory
    * @return
    */
    @SuppressLint( "DefaultLocale")
    public boolean isDirExist(String directory) {
        boolean isDirExistFlag = false;
        try {
           SftpATTRS sftpATTRS = sftp.lstat(directory);
           isDirExistFlag = true;
            return sftpATTRS.isDir();
       } catch (Exception e) {
            if (e.getMessage().toLowerCase().equals( "no such file")) {
               isDirExistFlag = false;
           }
       }
        return isDirExistFlag;
       }

    public void deleteSFTP(String directory, String deleteFile) {
        try {
           sftp.cd(directory);
           sftp.rm(deleteFile);
       } catch (Exception e) {
           e.printStackTrace();
       }
   }

    /**
    * 创建目录
    * @param path
    */
    public void mkdirs(String path) {
       File f = new File(path);
       String fs = f.getParent();
       f = new File(fs);
        if (!f.exists()) {
           f.mkdirs();
       }
   }

    /**
    * 列出目录文件
    * @param directory
    * @return
    * @throws SftpException
    */

    @SuppressWarnings( "rawtypes")
    public Vector listFiles(String directory) throws SftpException {
        return sftp.ls(directory);
   }

}
    
    

3.导入jsch-0.1.52.jar，这个包网上有下载。注意一定要把它放到工程的libs目录下。

4.布局文件：activity_sftpmain.xml

    
    
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools= "http://schemas.android.com/tools"
   android:layout_width= "match_parent"
   android:layout_height= "match_parent"
   android:orientation= "vertical"
 >
<TextView
       android:layout_width= "wrap_content"
       android:layout_height= "wrap_content"
       android:textStyle= "bold"
       android:textSize= "24dip"
       android:layout_gravity= "center"
       android:text= "SFTP上传下载测试 "/>

   <Button
        android:id= "@+id/button_upload"
        android:layout_width= "fill_parent"
        android:layout_height= "wrap_content"
        android:text= "上传"
       />

   <Button
        android:id= "@+id/button_download"
        android:layout_width= "fill_parent"
        android:layout_height= "wrap_content"
        android:text= "下载"
       />

</LinearLayout>
    
    

5.Manifest文件配置

    
    
  <uses-permission android:name= "android.permission.INTERNET" />
  <uses-permission android:name= "android.permission.ACCESS_NETWORK_STATE" />
   <uses-permission android:name= "android.permission.WRITE_EXTERNAL_STORAGE"/>
    
    

           

               

                                            

                

本文主要是讲解Android服务器之SFTP服务器的上传下载功能，也是对之前所做项目的整理。

主要的代码块如下所示，对代码中相应地方稍作调整，复制粘贴到项目即可以使用，代码中会提供相应注释。

1.MainActivity

  
  
public class MainActivity extends Activity implements OnClickListener{
    private final  String TAG= “MainActivity”;
    private Button buttonUpLoad = ;
    private Button buttonDownLoad = ;
    private SFTPUtils sftp;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_sftpmain);
      init();
  }

   public void init(){
         //获取控件对象
      buttonUpLoad = (Button) findViewById(R.id.button_upload);
      buttonDownLoad = (Button) findViewById(R.id.button_download);
       //设置控件对应相应函数
      buttonUpLoad.setOnClickListener( this);
      buttonDownLoad.setOnClickListener( this);
      sftp = new SFTPUtils( “SFTP服务器IP”, “用户名”, “密码”);
  }
     public void onClick(final View v) {
           // TODO Auto-generated method stub
         new Thread() {
             @Override
             public void run() {
                   //这里写入子线程需要做的工作

           switch (v.getId()) {
                   case R.id.button_upload: {
                   //上传文件
                  Log.d(TAG, “上传文件”);
                  String localPath = “sdcard/xml/”;
                  String remotePath = “test”;
                  sftp.connect();
                  Log.d(TAG, “连接成功”);
                  sftp.uploadFile(remotePath, “APPInfo.xml”, localPath, “APPInfo.xml”);
                  Log.d(TAG, “上传成功”);
                  sftp.disconnect();
                  Log.d(TAG, “断开连接”);
                }
                       break;

                   case R.id.button_download: {
                           //下载文件
                         Log.d(TAG, “下载文件”);
                         String localPath = “sdcard/download/”;
                         String remotePath = “test”;
                         sftp.connect();
                         Log.d(TAG, “连接成功”);
                         sftp.downloadFile(remotePath, “APPInfo.xml”, localPath, “APPInfo.xml”);
                         Log.d(TAG, “下载成功”);
                         sftp.disconnect();
                         Log.d(TAG, “断开连接”);

                        }
                         break;
                   default:
                         break;
          }
      }
         }.start();
         };
}
  
  

2.SFTPUtils

  
  
public class SFTPUtils {

    private String TAG= "SFTPUtils";
    private String host;
    private String username;
    private String password;
    private int port = 22;
    private ChannelSftp sftp = ;
    private Session sshSession = ;

    public SFTPUtils (String host, String username, String password) {
        this.host = host;
        this.username = username;
        this.password = password;
   }

    /**
    * connect server via sftp
    */
    public ChannelSftp connect() {
      JSch jsch = new JSch();
       try {
          sshSession = jsch.getSession(username, host, port);
          sshSession.setPassword(password);
          Properties sshConfig = new Properties();
          sshConfig.put( "StrictHostKeyChecking", "no");
          sshSession.setConfig(sshConfig);
          sshSession.connect();
          Channel channel = sshSession.openChannel( "sftp");
           if (channel != ) {
              channel.connect();
          } else {
              Log.e(TAG, "channel connecting failed.");
          }
          sftp = (ChannelSftp) channel;
      } catch (JSchException e) {
          e.printStackTrace();
      }
       return sftp;
  }


/**
* 断开服务器
*/
    public void disconnect() {
        if ( this.sftp != ) {
            if ( this.sftp.isConnected()) {
                this.sftp.disconnect();
               Log.d(TAG, "sftp is closed already");
           }
       }
        if ( this.sshSession != ) {
            if ( this.sshSession.isConnected()) {
                this.sshSession.disconnect();
               Log.d(TAG, "sshSession is closed already");
           }
       }
   }

    /**
    * 单个文件上传
    * @param remotePath
    * @param remoteFileName
    * @param localPath
    * @param localFileName
    * @return
    */
    public boolean uploadFile(String remotePath, String remoteFileName,
           String localPath, String localFileName) {
       FileInputStream in = ;
        try {
           createDir(remotePath);
           System.out.println(remotePath);
           File file = new File(localPath + localFileName);
           in = new FileInputStream(file);
           System.out.println(in);
           sftp.put(in, remoteFileName);
           System.out.println(sftp);
            return true;
       } catch (FileNotFoundException e) {
           e.printStackTrace();
       } catch (SftpException e) {
           e.printStackTrace();
       } finally {
            if (in != ) {
                try {
                   in.close();
               } catch (IOException e) {
                   e.printStackTrace();
               }
           }
       }
        return false;
   }

    /**
    * 批量上传
    * @param remotePath
    * @param localPath
    * @param del
    * @return
    */
    public boolean bacthUploadFile(String remotePath, String localPath,
            boolean del) {
        try {
           File file = new File(localPath);
           File[] files = file.listFiles();
            for ( int i = 0; i < files.length; i++) {
                if (files[i].isFile()
                       && files[i].getName().indexOf( "bak") == - 1) {
                    synchronized(remotePath){
                        if ( this.uploadFile(remotePath, files[i].getName(),
                           localPath, files[i].getName())
                           && del) {
                       deleteFile(localPath + files[i].getName());
                       }
                   }
               }
           }
            return true;
       } catch (Exception e) {
           e.printStackTrace();
       } finally {
            this.disconnect();
       }
        return false;

   }

    /**
    * 批量下载文件
    *
    * @param remotPath
    *            远程下载目录(以路径符号结束)
    * @param localPath
    *            本地保存目录(以路径符号结束)
    * @param fileFormat
    *            下载文件格式(以特定字符开头,为空不做检验)
    * @param del
    *            下载后是否删除sftp文件
    * @return
    */
    @SuppressWarnings( "rawtypes")
    public boolean batchDownLoadFile(String remotPath, String localPath,
           String fileFormat, boolean del) {
        try {
           connect();
           Vector v = listFiles(remotPath);
            if (v.size() > 0) {

               Iterator it = v.iterator();
                while (it.hasNext()) {
                   LsEntry entry = (LsEntry) it.next();
                   String filename = entry.getFilename();
                   SftpATTRS attrs = entry.getAttrs();
                    if (!attrs.isDir()) {
                        if (fileFormat != && ! "".equals(fileFormat.trim())) {
                            if (filename.startsWith(fileFormat)) {
                                if ( this.downloadFile(remotPath, filename,
                                       localPath, filename)
                                       && del) {
                                   deleteSFTP(remotPath, filename);
                               }
                           }
                       } else {
                            if ( this.downloadFile(remotPath, filename,
                                   localPath, filename)
                                   && del) {
                               deleteSFTP(remotPath, filename);
                           }
                       }
                   }
               }
           }
       } catch (SftpException e) {
           e.printStackTrace();
       } finally {
            this.disconnect();
       }
        return false;
   }

    /**
    * 单个文件下载
    * @param remotePath
    * @param remoteFileName
    * @param localPath
    * @param localFileName
    * @return
    */
    public boolean downloadFile(String remotePath, String remoteFileName,
           String localPath, String localFileName) {
        try {
           sftp.cd(remotePath);
           File file = new File(localPath + localFileName);
           mkdirs(localPath + localFileName);
           sftp.get(remoteFileName, new FileOutputStream(file));
            return true;
       } catch (FileNotFoundException e) {
           e.printStackTrace();
       } catch (SftpException e) {
           e.printStackTrace();
       }

        return false;
   }

    /**
    * 删除文件
    * @param filePath
    * @return
    */
    public boolean deleteFile(String filePath) {
       File file = new File(filePath);
            if (!file.exists()) {
                return false;
           }
            if (!file.isFile()) {
                return false;
           }
            return file.delete();
       }

    public boolean createDir(String createpath) {
        try {
            if (isDirExist(createpath)) {
                this.sftp.cd(createpath);
               Log.d(TAG,createpath);
                return true;
           }
           String pathArry[] = createpath.split( "/");
           StringBuffer filePath = new StringBuffer( "/");
            for (String path : pathArry) {
                if (path.equals( "")) {
                    continue;
               }
               filePath.append(path + "/");
                    if (isDirExist(createpath)) {
                       sftp.cd(createpath);
                   } else {
                       sftp.mkdir(createpath);
                       sftp.cd(createpath);
                   }
               }
                this.sftp.cd(createpath);
                  return true;
           } catch (SftpException e) {
               e.printStackTrace();
           }
            return false;
       }

    /**
    * 判断目录是否存在
    * @param directory
    * @return
    */
    @SuppressLint( "DefaultLocale")
    public boolean isDirExist(String directory) {
        boolean isDirExistFlag = false;
        try {
           SftpATTRS sftpATTRS = sftp.lstat(directory);
           isDirExistFlag = true;
            return sftpATTRS.isDir();
       } catch (Exception e) {
            if (e.getMessage().toLowerCase().equals( "no such file")) {
               isDirExistFlag = false;
           }
       }
        return isDirExistFlag;
       }

    public void deleteSFTP(String directory, String deleteFile) {
        try {
           sftp.cd(directory);
           sftp.rm(deleteFile);
       } catch (Exception e) {
           e.printStackTrace();
       }
   }

    /**
    * 创建目录
    * @param path
    */
    public void mkdirs(String path) {
       File f = new File(path);
       String fs = f.getParent();
       f = new File(fs);
        if (!f.exists()) {
           f.mkdirs();
       }
   }

    /**
    * 列出目录文件
    * @param directory
    * @return
    * @throws SftpException
    */

    @SuppressWarnings( "rawtypes")
    public Vector listFiles(String directory) throws SftpException {
        return sftp.ls(directory);
   }

}
  
  

3.导入jsch-0.1.52.jar，这个包网上有下载。注意一定要把它放到工程的libs目录下。

4.布局文件：activity_sftpmain.xml

  
  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools= "http://schemas.android.com/tools"
   android:layout_width= "match_parent"
   android:layout_height= "match_parent"
   android:orientation= "vertical"
 >
<TextView
       android:layout_width= "wrap_content"
       android:layout_height= "wrap_content"
       android:textStyle= "bold"
       android:textSize= "24dip"
       android:layout_gravity= "center"
       android:text= "SFTP上传下载测试 "/>

   <Button
        android:id= "@+id/button_upload"
        android:layout_width= "fill_parent"
        android:layout_height= "wrap_content"
        android:text= "上传"
       />

   <Button
        android:id= "@+id/button_download"
        android:layout_width= "fill_parent"
        android:layout_height= "wrap_content"
        android:text= "下载"
       />

</LinearLayout>
  
  

5.Manifest文件配置

  
  
  <uses-permission android:name= "android.permission.INTERNET" />
  <uses-permission android:name= "android.permission.ACCESS_NETWORK_STATE" />
   <uses-permission android:name= "android.permission.WRITE_EXTERNAL_STORAGE"/>