我是这类Java应用程序的新手,正在寻找一些示例代码,介绍如何使用SSH连接到远程服务器,执行命令,并使用Java作为编程语言获取输出。
答案 0 :(得分:14)
查看Runtime.exec()Javadoc
Process p = Runtime.getRuntime().exec("ssh myhost");
PrintStream out = new PrintStream(p.getOutputStream());
BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
out.println("ls -l /home/me");
while (in.ready()) {
String s = in.readLine();
System.out.println(s);
}
out.println("exit");
p.waitFor();
答案 1 :(得分:12)
答案 2 :(得分:4)
以下是在Java中使用SSh的最简单方法。下载以下链接中的任何文件并解压缩,然后从解压缩的文件中添加jar文件并添加到项目的构建路径中 http://www.ganymed.ethz.ch/ssh2/ 并使用以下方法
public void SSHClient(String serverIp,String command, String usernameString,String password) throws IOException{
System.out.println("inside the ssh function");
try
{
Connection conn = new Connection(serverIp);
conn.connect();
boolean isAuthenticated = conn.authenticateWithPassword(usernameString, password);
if (isAuthenticated == false)
throw new IOException("Authentication failed.");
ch.ethz.ssh2.Session sess = conn.openSession();
sess.execCommand(command);
InputStream stdout = new StreamGobbler(sess.getStdout());
BufferedReader br = new BufferedReader(new InputStreamReader(stdout));
System.out.println("the output of the command is");
while (true)
{
String line = br.readLine();
if (line == null)
break;
System.out.println(line);
}
System.out.println("ExitCode: " + sess.getExitStatus());
sess.close();
conn.close();
}
catch (IOException e)
{
e.printStackTrace(System.err);
}
}
答案 3 :(得分:3)
您可以查看这个基于Java的远程命令执行框架,包括。通过SSH:https://github.com/jkovacic/remote-exec 它依赖于两个开源SSH库,JSch(对于此实现甚至支持ECDSA身份验证)或Ganymed(这两个库中的一个就足够了)。乍一看,它可能看起来有点复杂,你必须准备大量的SSH相关类(提供服务器和你的用户详细信息,指定加密细节,提供OpenSSH兼容的私钥等,但SSH本身相当复杂太)。另一方面,模块化设计允许简单地包含更多SSH库,轻松实现其他命令的输出处理甚至交互式类等。
答案 4 :(得分:1)
几年前我使用了ganymede ...... http://www.cleondris.ch/opensource/ssh2/
答案 5 :(得分:0)
我基于JSch
库创建了解决方案:
import com.google.common.io.CharStreams
import com.jcraft.jsch.ChannelExec
import com.jcraft.jsch.JSch
import com.jcraft.jsch.JSchException
import com.jcraft.jsch.Session
import static java.util.Arrays.asList
class RunCommandViaSsh {
private static final String SSH_HOST = "test.domain.com"
private static final String SSH_LOGIN = "username"
private static final String SSH_PASSWORD = "password"
public static void main() {
System.out.println(runCommand("pwd"))
System.out.println(runCommand("ls -la"));
}
private static List<String> runCommand(String command) {
Session session = setupSshSession();
session.connect();
ChannelExec channel = (ChannelExec) session.openChannel("exec");
try {
channel.setCommand("command");
channel.setInputStream(null);
InputStream output = channel.getInputStream();
channel.connect();
String result = CharStreams.toString(new InputStreamReader(output));
return asList(result.split("\n"));
} catch (JSchException | IOException e) {
closeConnection(channel, session)
throw new RuntimeException(e)
} finally {
closeConnection(channel, session)
}
}
private static Session setupSshSession() {
Session session = new JSch().getSession(SSH_LOGIN, SSH_HOST, 22);
session.setPassword(SSH_PASSWORD);
session.setConfig("PreferredAuthentications", "publickey,keyboard-interactive,password");
session.setConfig("StrictHostKeyChecking", "no"); // disable check for RSA key
return session;
}
private static void closeConnection(ChannelExec channel, Session session) {
try {
channel.disconnect()
} catch (Exception ignored) {
}
session.disconnect()
}
}