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：

        com.jcraft
           jsch
           0.1.53
    

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;
    }

}