springboot使用JSch远程读取sshd服务器上的文件

港控/mmm° 2022-05-15 01:47 520阅读 0赞

JSch 是SSH2的一个纯Java实现。它允许你连接到一个sshd 服务器，使用端口转发，X11转发，文件传输等等。你可以将它的功能集成到你自己的 程序中。同时该项目也提供一个J2ME版本用来在手机上直连SSHD服务器。实现一个java工具类。

引用：

<dependency>  
      <groupId>com.jcraft</groupId>  
      <artifactId>jsch</artifactId>  
  </dependency>

java工具类：

package com.citipub_zxsy.count.utils;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Set;
    
    import org.apache.commons.lang3.StringUtils;
    
    import com.alibaba.fastjson.JSON;
    import com.alibaba.fastjson.JSONObject;
    import com.jcraft.jsch.Channel;
    import com.jcraft.jsch.ChannelExec;
    import com.jcraft.jsch.JSch;
    import com.jcraft.jsch.JSchException;
    import com.jcraft.jsch.Session; 
    /**
     * @decription 执行远程shell命令，并获取结果--实现分析日志
     * @author zhangwenchao
     * @date  2018/6/8
     *
     */
    public class ShellUtils {
    
    	
    	/**配置连接
    	 * @param user
    	 * @param passwd
    	 * @param host
    	 * @param post
    	 * @throws Exception
    	 */
    	public static Session connect(String user, String passwd, String host,int post) throws Exception {
    		JSch  jsch = new JSch();
    		Session session = jsch.getSession(user, host, post);
    	    if (session == null) {
    	        throw new Exception("session is null");
    	    }
    	    session.setPassword(passwd);
    	    java.util.Properties config = new java.util.Properties();
    	    //第一次登陆
    	    config.put("StrictHostKeyChecking", "no");
    	    session.setConfig(config);
    	    try {
    	        session.connect(30000);
    	    } catch (Exception e) {
    	        throw new Exception("连接远程端口无效或用户名密码错误");
    	    }
            return session;
    	}
    
    
    	/**
    	 * @description 执行shell命令
    	 * @param command shell 命令
    	 * @param user 用户名
    	 * @param passwd 密码 
    	 * @param host ip地址
    	 * @param post 端口号
    	 * @throws Exception
    	 */
    	public static void execCmd(String command, String user, String passwd, String host, int port) throws Exception {
    	    System.out.println(command);
    	    Session session= connect(user, passwd,host,port);
    	    BufferedReader reader = null;
    	    Channel channel = null;
    	    try {
    	            channel = session.openChannel("exec");
    	            ((ChannelExec) channel).setCommand(command);
    
    	            channel.setInputStream(null);
    	            ((ChannelExec) channel).setErrStream(System.err);
    
    	            channel.connect();
    	            InputStream in = channel.getInputStream();
    	            reader = new BufferedReader(new InputStreamReader(in));
    	            String buf = null;	           
    	            //返回数据
    	            while ((buf = reader.readLine()) != null) {
    	            	System.out.println(buf);
    	            }
    	    } catch (IOException e) {
    	        e.printStackTrace();
    	    } catch (JSchException e) {
    	        e.printStackTrace();
    	    } finally {
    	        try {
    	            reader.close();
    	        } catch (IOException e) {
    	            e.printStackTrace();
    	        }
    	        channel.disconnect();
    	        session.disconnect();
    	    }
    	}
    	
    	
    	
    	public static List<String> execCmdAndOutput(String command, String user, String passwd, String host, int port) throws Exception {
    	   
    	    Session session= connect(user, passwd,host,port);
    	    BufferedReader reader = null;
    	    Channel channel = null;
    	    try {
    	            channel = session.openChannel("exec");
    	            ((ChannelExec) channel).setCommand(command);
    
    	            channel.setInputStream(null);
    	            ((ChannelExec) channel).setErrStream(System.err);
    
    	            channel.connect();
    	            InputStream in = channel.getInputStream();
    	            reader = new BufferedReader(new InputStreamReader(in));
    	            List<String> output = new ArrayList<String>();
    	            String buf = null;	           
    	            //返回数据
    	            while ((buf = reader.readLine()) != null) {
    	            	output.add(buf);	            	
    	            }
    	            return output;
    	    } catch (IOException e) {
    	        e.printStackTrace();
    	    } catch (JSchException e) {
    	        e.printStackTrace();
    	    } finally {
    	        try {
    	            reader.close();
    	        } catch (IOException e) {
    	            e.printStackTrace();
    	        }
    	        channel.disconnect();
    	        session.disconnect();
    	    }
    	    return null;
    	}
    	
    	
    	/**
    	 * 
    	 * @param logPath
    	 * @param fileList
    	 * @param user
    	 * @param passwd
    	 * @param host
    	 * @param port
    	 * @return
    	 * @throws Exception
    	 */
    	public static Set<String> execCmdAndgetOlderUserIDs(Set<String> userIDSet, String logPath, List<String> fileNames, String user, String passwd, String host, int port) throws Exception {
    
    		Session session= connect(user, passwd,host,port);	  
    	    try {
    			for (String fileName : fileNames) {
    				String command = "cat "+fileName+"|grep '/login'";				
    				Channel channel = null;
    				BufferedReader reader = null;
    				try {
    					channel = session.openChannel("exec");
    					((ChannelExec) channel).setCommand(command);
    
    					channel.setInputStream(null);
    					((ChannelExec) channel).setErrStream(System.err);
    
    					channel.connect();
    					InputStream in = channel.getInputStream();
    					reader = new BufferedReader(new InputStreamReader(in,"UTF-8"));
    					String buf = null;
    					//返回数据
    					while ((buf = reader.readLine()) != null) {
    						analyseLogOneLine(userIDSet, buf);
    					}
    				} finally {
    					reader.close();
    					channel.disconnect();
    				}
    
    			} 
    		} finally {
    			session.disconnect();
    		}
    	    return userIDSet;
    	}
    	
    	
    	/**
         * 解析一行日志，获取老用户uid存放到Set中并返回
         * @param map
         * @param str
         * @return
         */
    	private static Set<String> analyseLogOneLine(Set<String> userIDSet, String str) {
    		String[] logLine  = str.split("\\s+\\|\\s+");
    		String userToken = null;
    		String cacheResult=null;
    		if(logLine!=null && logLine.length==12){
    			userToken= logLine[6].trim();
    			cacheResult = logLine[10].trim();
    		}		        
    		if(StringUtils.isNotEmpty(cacheResult)){
    			
    			JSONObject jsonObject = JSON.parseObject(cacheResult);
    			
    			JSONObject body = (JSONObject)jsonObject.get("body");
    			
    			if(body!=null){
    				String userID = (String)body.get("userID");
    				if(StringUtils.isNotEmpty(userID)&&StringUtils.isNotEmpty(userToken)&&userToken.contains("anony")){
    					userToken = userToken.substring(0, userToken.length()-6);
    					if(!userToken.equals(userID)){
    						userIDSet.add(userID);
    					}
    				}
    			}
    			
    			
    			
    		        	
    		}
    		return userIDSet;
    	}
    	
    	
    	
    	
    	
    	public static void main(String[] args) throws Exception {
    		
    		execCmd("cd /web/logs/sc_zxsy; cat api-2018-06-07.0.log","yunpub","XXXXXXX","xxx.xxx.xx.xxx",22);
    	}
    
    }