java使用ssh连接Linux并执行命令

需依赖jcraft的jar包。可自行下载或者通过maven下载。

maven pom.xml配置：

<dependency>

        <groupId>com.jcraft</groupId>

           <artifactId>jsch</artifactId>

           <version>0.1.53</version>

    </dependency>

java代码如下：

import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.io.IOUtils;

import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;

public class SSHLinux {

public static void main(String[] args) throws IOException, JSchException {
// TODO Auto-generated method stub
String host = "172.19.28.253";
int port = 22;
String user = "root";
String password = "123456";
String command = "whatweb --output-xml http://216.139.147.75:443/"; String res = exeCommand(host,port,user,password,command);

System.out.println(res);

}

public static String exeCommand(String host, int port, String user, String password, String command) throws JSchException, IOException {

JSch jsch = new JSch();
Session session = jsch.getSession(user, host, port);
session.setConfig("StrictHostKeyChecking", "no");
//    java.util.Properties config = new java.util.Properties();
//   config.put("StrictHostKeyChecking", "no");

session.setPassword(password);
session.connect();

ChannelExec channelExec = (ChannelExec) session.openChannel("exec");
InputStream in = channelExec.getInputStream();
channelExec.setCommand(command);
channelExec.setErrStream(System.err);
channelExec.connect();
String out = IOUtils.toString(in, "UTF-8");

channelExec.disconnect();
session.disconnect();

return out;
}

}