Java远程实现Linux文件内容读取.

//首先要下载com.jcraft.jsch_0.1.31.jar
package Test;

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 com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
/**
*
* java 远程读取linux文件
* @author zhaochong
*/
public class ShellUtil {
private static JSch jsch;
private static Session session;

/**配置连接 * @param user * @param passwd * @param host * @param post * @throws Exception */public static void connect(String user, String passwd, String host,int post) throws Exception {    jsch = new JSch();    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");    }}public static String[] getArr(String str){    String[] arr  = str.split(":");    return arr;}/** * @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 post) throws Exception {    System.out.println(command);    connect(user, passwd, host,post);    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;            List<LoggerForm> list = new ArrayList<LoggerForm>();            //返回数据            while ((buf = reader.readLine()) != null) {                String[] arr = buf.split("\|");                for (int i = 0; i < arr.length; i++) {                    System.out.println("异常时间:"+arr[1]+"错误信息:"+arr[2]+"异常类型:"+getArr(arr[0])[2]+"异常信息所在文件行数:"+getArr(arr[0])[1]+"日志文件名称:"+getArr(arr[0])[0]);                }            }    } catch (IOException e) {        e.printStackTrace();    } catch (JSchException e) {        e.printStackTrace();    } finally {        try {            reader.close();        } catch (IOException e) {            e.printStackTrace();        }        channel.disconnect();        session.disconnect();    }}

}