Java SSH远程执行Linux Shell脚本实现（转）
此程序需要ganymed-ssh2-build210.jar包。
下载地址：http://www.ganymed.ethz.ch/ssh2/
为了调试方便，可以将\ganymed-ssh2-build210\src下的代码直接拷贝到我们的工程里，
此源码的好处就是没有依赖很多其他的包，拷贝过来干干净净。

此程序的目的是执行远程机器上的Shell脚本。
远程机器IP：***.**.**.***
用户名：sshapp
密码：sshapp
登录后用pwd命令，显示当前目录为：/sshapp.
在/sshapp/myshell/目录下有myTest.sh文件，内容如下：
echo $1 $2 $#
#print $1

我们的Java代码RmtShellExecutor.java：

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(s