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();
    }
}