此程序需要ganymed-ssh2-build210.jar包。
下載地址： http://www.ganymed.ethz.ch/ssh2/
為了調試方便，可以將\ganymed-ssh2-build210\src下的代碼直接拷貝到我們的工程里，
此源碼的好處就是沒有依賴很多其他的包，拷貝過來干干凈凈。

此程序的目的是執行遠程機器上的Shell腳本。
遠程機器IP：***.**.**.***
用戶名：sshapp
密碼：sshapp
登錄后用pwd命令，顯示當前目錄為：/sshapp.
在/sshapp/myshell/目錄下有myTest.sh文件，內容如下：

public ? class ?RmtShellExecutor? {
????
????
???? private ?Connection?conn;
????
???? private ?String?????ip;
????
???? private ?String?????usr;
????
???? private ?String?????psword;
???? private ?String?????charset? = ?Charset.defaultCharset().toString();

???? private ? static ? final ? int ?TIME_OUT? = ? 1000 ? * ? 5 ? * ? 60 ;

????
???? public ?RmtShellExecutor(ShellParam?param)? {
???????? this .ip? = ?param.getIp();
???????? this .usr? = ?param.getUsername();
???????? this .psword? = ?param.getPassword();
????}

????
???? public ?RmtShellExecutor(String?ip,?String?usr,?String?ps)? {
???????? this .ip? = ?ip;
???????? this .usr? = ?usr;
???????? this .psword? = ?ps;
????}

????
???? private ? boolean ?login()? throws ?IOException? {
????????conn? = ? new ?Connection(ip);
????????conn.connect();
???????? return ?conn.authenticateWithPassword(usr,?psword);
????}

????
???? public ? int ?exec(String?cmds)? throws ?Exception? {
????????InputStream?stdOut? = ? null ;
????????InputStream?stdErr? = ? null ;
????????String?outStr? = ? "" ;
????????String?outErr? = ? "" ;
???????? int ?ret? = ? - 1 ;
???????? try ? {
???????????? if ?(login())? {
???????????????? // ?Open?a?new?{@link?Session}?on?this?connection
????????????????Session?session? = ?conn.openSession();
???????????????? // ?Execute?a?command?on?the?remote?machine.
????????????????session.execCommand(cmds);
????????????????
????????????????stdOut? = ? new ?StreamGobbler(session.getStdout());
????????????????outStr? = ?processStream(stdOut,?charset);
????????????????
????????????????stdErr? = ? new ?StreamGobbler(session.getStderr());
????????????????outErr? = ?processStream(stdErr,?charset);
????????????????
????????????????session.waitForCondition(ChannelCondition.EXIT_STATUS,?TIME_OUT);
????????????????
????????????????System.out.println( " outStr= " ? + ?outStr);
????????????????System.out.println( " outErr= " ? + ?outErr);
????????????????
????????????????ret? = ?session.getExitStatus();
????????????} ? else ? {
???????????????? throw ? new ?AppException( " 登錄遠程機器失敗 " ? + ?ip);? // ?自定義異常類?實現略
????????????}
????????} ? finally ? {
???????????? if ?(conn? != ? null )? {
????????????????conn.close();
????????????}
????????????IOUtils.closeQuietly(stdOut);
????????????IOUtils.closeQuietly(stdErr);
????????}
???????? return ?ret;
????}

????
???? private ?String?processStream(InputStream?in,?String?charset)? throws ?Exception? {
???????? byte []?buf? = ? new ? byte [ 1024 ];
????????StringBuilder sb? = ? new ?StringBuilder();
???????? while ?(in.read(buf)? != ? - 1 )? {
????????????sb.append( new ?String(buf,?charset));
????????}
???????? return ?sb.toString();
????}

???? public ? static ? void ?main(String?args[])? throws ?Exception? {
????????RmtShellExecutor?exe? = ? new ?RmtShellExecutor( " ***.**.**.*** " ,? "ssh app " ,? "sshapp " );
???????? // ?執行myTest.sh?參數為java?Know?dummy
????????System.out.println(exe.exec( " sh?/webapp/myshell/myTest.sh?java?Know?dummy " ));
// ????????exe.exec("uname?-a?&&?date?&&?uptime?&&?who");
????}
}

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