Java实践 — SSH远程执行Shell脚本（转）

    import java.io.BufferedReader;  
    import java.io.InputStreamReader;  
    import java.util.Vector;  
      
    import com.jcraft.jsch.Channel;  
    import com.jcraft.jsch.ChannelExec;  
    import com.jcraft.jsch.JSch;  
    import com.jcraft.jsch.JSchException;  
    import com.jcraft.jsch.Session;  
      
    /** 
     * This class provide interface to execute command on remote Linux. 
     */  
      
    public class SSHCommandExecutor {  
        private String ipAddress;  
      
        private String username;  
      
        private String password;  
      
        public static final int DEFAULT_SSH_PORT = 22;  
      
        private Vector<String> stdout;  
      
        public SSHCommandExecutor(final String ipAddress, final String username, final String password) {  
            this.ipAddress = ipAddress;  
            this.username = username;  
            this.password = password;  
            stdout = new Vector<String>();  
        }  
      
        public int execute(final String command) {  
            int returnCode = 0;  
            JSch jsch = new JSch();  
            MyUserInfo userInfo = new MyUserInfo();  
      
            try {  
                // Create and connect session.  
                Session session = jsch.getSession(username, ipAddress, DEFAULT_SSH_PORT);  
                session.setPassword(password);  
                session.setUserInfo(userInfo);  
                session.connect();  
      
                // Create and connect channel.  
                Channel channel = session.openChannel("exec");  
                ((ChannelExec) channel).setCommand(command);  
      
                channel.setInputStream(null);  
                BufferedReader input = new BufferedReader(new InputStreamReader(channel  
                        .getInputStream()));  
      
                channel.connect();  
                System.out.println("The remote command is: " + command);  
      
                // Get the output of remote command.  
                String line;  
                while ((line = input.readLine()) != null) {  
                    stdout.add(line);  
                }  
                input.close();  
      
                // Get the return code only after the channel is closed.  
                if (channel.isClosed()) {  
                    returnCode = channel.getExitStatus();  
                }  
      
                // Disconnect the channel and session.  
                channel.disconnect();  
                session.disconnect();  
            } catch (JSchException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
            } catch (Exception e) {  
                e.printStackTrace();  
            }  
            return returnCode;  
        }  
      
        public Vector<String> getStandardOutput() {  
            return stdout;  
        }  
      
        public static void main(final String [] args) {  
            SSHCommandExecutor sshExecutor = new SSHCommandExecutor("xx.xx.xx.xx", "username", "password");  
            sshExecutor.execute("uname -s -r -v");  
              
            Vector<String> stdout = sshExecutor.getStandardOutput();  
            for (String str : stdout) {  
                System.out.println(str);  
            }  
        }  
    }  

    import com.jcraft.jsch.UserInfo;  
      
    /** 
     * This class provide interface to feedback information to the user. 
     */  
    public class MyUserInfo implements UserInfo {  
        private String password;  
      
        private String passphrase;  
      
        @Override  
        public String getPassphrase() {  
            System.out.println("MyUserInfo.getPassphrase()");  
            return null;  
        }  
      
        @Override  
        public String getPassword() {  
            System.out.println("MyUserInfo.getPassword()");  
            return null;  
        }  
      
        @Override  
        public boolean promptPassphrase(final String arg0) {  
            System.out.println("MyUserInfo.promptPassphrase()");  
            System.out.println(arg0);  
            return false;  
        }  
      
        @Override  
        public boolean promptPassword(final String arg0) {  
            System.out.println("MyUserInfo.promptPassword()");  
            System.out.println(arg0);  
            return false;  
        }  
      
        @Override  
        public boolean promptYesNo(final String arg0) {  
            System.out.println("MyUserInfo.promptYesNo()");  
            System.out.println(arg0);  
            if (arg0.contains("The authenticity of host")) {  
                return true;  
            }  
            return false;  
        }  
      
        @Override  
        public void showMessage(final String arg0) {  
            System.out.println("MyUserInfo.showMessage()");  
        }  
    }  

4. 执行结果分析

Reference