如何在Android 中实现scp操作

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我是靠谱客的博主细心羊，这篇文章主要介绍如何在Android 中实现scp操作，现在分享给大家，希望可以做个参考。

SSH

SSH是专为远程登录会话和其他网络服务提供安全性的协议，简单的说就是一种网络协议。是linux的标准配置。用于linux设备之间的通讯。

SCP

SCP是一种基于SSH完成加密拷贝文件的协议。使用SSH进行身份认证确保数据传输的真实性和可靠性。

SCP默认通过TCP端口22运行

SCP程序常用语法：

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// 复制文件到主机
scp SourceFile user@host:directory/TargetFile


// 从主机复制文件
scp user@host:directory/SourceFile TargetFile
scp -r user@host:directory/SourceFolder TargetFolder

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// 从主机复制文件
scp user@host:directory/SourceFile TargetFile
scp -r user@host:directory/SourceFolder TargetFolder

SFTP

SFTP也是基于SSH安全文件传输协议。不同于基于FTP,FTP基于Tcp使用明文传输用户信息。安全性较差。

Android中使用SCP

下载ganymed-ssh2 jar包

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<!-- https://mvnrepository.com/artifact/ch.ethz.ganymed/ganymed-ssh2 -->
<dependency>
  <groupId>ch.ethz.ganymed</groupId>
  <artifactId>ganymed-ssh2</artifactId>
  <version>build210</version>
</dependency>

官方下载地址 http://www.ganymed.ethz.ch/ssh2/

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public class Scp {

private volatile static Scp scpInstance;

private String user;
  private String pass;
  private String host;
  private Connection connection;
  private SCPClient scpClient;
  private Boolean isAuthed;

private Scp(String user, String pass, String host){
    this.user = user;
    this.pass = pass;
    this.host = host;
  }

public static Scp getScpUtilsInstance(String user, String pass, String host){

if(scpInstance == null) {
      synchronized(Scp.class) {
        if(scpInstance == null) {
          scpInstance = new Scp(user,pass,host);
        }
      }
    }
    return scpInstance;
  }

public void connect(){
    connection = new Connection(host);
    try {
      connection.connect();
      isAuthed = connection.authenticateWithPassword(user,pass);
      // scp 连接
      scpClient = connection.createSCPClient();
    } catch (IOException e) {
      e.printStackTrace();
      close();
    }
  }

public void close(){
    connection.close();
    sftPv3Client.close();
  }

public boolean getIsAuthed(){
    return isAuthed;
  }

// 拷贝文件到服务器
  public void putFile(String filePath,String aimPath){
    try {
      if(scpClient != null){
        scpClient.put(filePath,aimPath);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

}

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public class Scp {

  private volatile static Scp scpInstance;

  private String user;
  private String pass;
  private String host;
  private Connection connection;
  private SCPClient scpClient;
  private Boolean isAuthed;

  private Scp(String user, String pass, String host){
    this.user = user;
    this.pass = pass;
    this.host = host;
  }

  public static Scp getScpUtilsInstance(String user, String pass, String host){

    if(scpInstance == null) {
      synchronized(Scp.class) {
        if(scpInstance == null) {
          scpInstance = new Scp(user,pass,host);
        }
      }
    }
    return scpInstance;
  }


  public void connect(){
    connection = new Connection(host);
    try {
      connection.connect();
      isAuthed = connection.authenticateWithPassword(user,pass);
      // scp 连接
      scpClient = connection.createSCPClient();
    } catch (IOException e) {
      e.printStackTrace();
      close();
    }
  }

  public void close(){
    connection.close();
    sftPv3Client.close();
  }

  public boolean getIsAuthed(){
    return isAuthed;
  }

  // 拷贝文件到服务器
  public void putFile(String filePath,String aimPath){
    try {
      if(scpClient != null){
        scpClient.put(filePath,aimPath);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

 

}

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Scp scp = Scp.getScpUtilsInstance("root","psd","192.168.199.3");
              scp.connect();
              if(scp.getIsAuthed()){
                for(int i = 0;i<data.getLayers();i++){
                  scp.putFile(SlcParser.pngDirectory+"/"+i+".png","/home");
                }
              }

SFTP 删除文件

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private SFTPv3Client sftPv3Client;
  
  sftPv3Client = new SFTPv3Client(connection);

  public void rmFile(String filePath){
      try {
        if(sftPv3Client != null){
          sftPv3Client.rm(filePath);
        }
      } catch (IOException e) {
        e.printStackTrace();
      }
    }


Scp scp = Scp.getScpUtilsInstance("root","psd","192.168.199.3");
        scp.connect();
        if(scp.getIsAuthed()){
          for(int i = 0;i<10;i++){
            scp.rmFile("/home/"+i+".png");
          }
        }