ganymed-ssh2-build210.jar 的使用

ganymed-ssh2简介：

Ganymed SSH-2 for Java是用纯Java实现SSH-2协议的一个包。可以利用它直接在Java程序中连接SSH服务器。Ganymed
SSH-2支持SSH对话(远程命令执行和shell访问),本地和远程端口转发，本地数据流转发，X11转发和SCP。这些都没有依赖任何JCE
provider，而且所有这些都包含加密的功能。

Ganymed SSH-2 for Java系列2之连接远程服务器

连接远程服务器，新建一个java工具类，将其命名为CommandRunner；

创建一个连接服务器的静态方法：

[java] view
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public static Connection getOpenedConnection(String host, String username,



String password) throws IOException {



if (logger.isInfoEnabled()) {



logger.info("connecting to " + host + " with user " + username



+ " and pwd " + password);



}



Connection conn = new Connection(host);



conn.connect(); // make sure the connection is opened



boolean isAuthenticated = conn.authenticateWithPassword(username,



password);



if (isAuthenticated == false)



throw new IOException("Authentication failed.");



return conn;



}

测试代码：

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public static void main(String[] args) {

Connection conn = null;

try {

conn = CommandRunner.getOpenedConnection("172.16.18.141", "root",

"123456");



if (null != conn) {

System.out.println("连接服务器成功！");

}



} catch (IOException e) {

e.printStackTrace();

} finally {

conn.close();

conn = null;

}



}

至此，连接服务器的静态方法完成，但是这样处理会存在一个问题，就是我们都知道ssh默认端口是22，如果服务器的ssh 端口不是22，那么这个连接服务器的代码是不是就不可以用了啦，所以需要简单的修改下 ，修改如下：

方法增加一个端口参数：

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public static Connection getOpenedConnection(String host, String username,



String password,int port) throws IOException {

连接的地方将参数放进去：

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Connection conn = new Connection(host,port);

这样不论ssh端口改为什么，我们底层的这个连接方法都不在需要改动了。

Ganymed SSH-2 for Java系列3之执行远程shell 命令

分类： J***A shell SSH22014-02-24
18:42 846人阅读 评论(1) 收藏 举报

利用Ganymed SSH-2 for Java 连接到远程服务器，然后执行shell命令；

首先我们再在之前CommandRunner类中再添加一个执行shell命令的方法，具体如下所示：

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public static String execShellScript(String host, String username,

String password,



String cmd, int port) throws IOException {



if (logger.isInfoEnabled()) {



logger.info("running SSH cmd [" + cmd + "]");



}



Connection conn = null;



Session sess = null;



InputStream stdout = null;



BufferedReader br = null;



StringBuffer buffer = new StringBuffer("exec result:");

buffer.append(System.getProperty("line.separator"));// 换行

try {



conn = getOpenedConnection(host, username, password, port);



sess = conn.openSession();



sess.execCommand(cmd);



stdout = new StreamGobbler(sess.getStdout());



br = new BufferedReader(new InputStreamReader(stdout));



while (true) {



// attention: do not comment this block, or you will hit

// NullPointerException



// when you are trying to read exit status



String line = br.readLine();



if (line == null)



break;



buffer.append(line);

buffer.append(System.getProperty("line.separator"));// 换行



if (logger.isInfoEnabled()) {



logger.info(line);



}



}



} finally {



sess.close();



conn.close();



}



return buffer.toString();



}

测试代码：

[java] view
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public static void main(String[] args) {



String cmd = "uname -a";



try {

String info = CommandRunner.execShellScript("172.16.18.141", "root",

"123456",cmd,22);



System.out.println("info is:"+info);

} catch (IOException e) {

e.printStackTrace();

}



}

执行结果
log4j:WARN No appenders could be found for logger (com.ssh2.shell.ganymed.CommandRunner).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

info is:exec result:

Linux localhost.localdomain 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 x86_64 x86_64 GNU/Linux

转自：http://blog.csdn.net/wangmuming/article/details/19835631