调用远程linux服务器shell脚本

Posted 2021-02-03 逆水乘舟，不进则退

package com.haiyisoft.hyoaPc.ui;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;

import org.apache.commons.lang.StringUtils;

import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;

/**
* 远程执行linux的shell script
* @author Ickes
* @since V0.1
*/
public class RemoteExecuteCommand {
//字符编码默认是utf-8
private static String DEFAULTCHART="UTF-8";
private Connection conn;
private String ip;
private String userName;
private String userPwd;

public RemoteExecuteCommand(String ip, String userName, String userPwd) {
this.ip = ip;
this.userName = userName;
this.userPwd = userPwd;
}


public RemoteExecuteCommand() {

}

/**
* 远程登录linux的主机
* @author Ickes
* @since V0.1
* @return
* 登录成功返回true，否则返回false
*/
public Boolean login(){
boolean flg=false;
try {
conn = new Connection(ip);
conn.connect();//连接
flg=conn.authenticateWithPassword(userName, userPwd);//认证
} catch (IOException e) {
e.printStackTrace();
}
return flg;
}
/**
* @author Ickes
* 远程执行shll脚本或者命令
* @param cmd
* 即将执行的命令
* @return
* 命令执行完后返回的结果值
* @since V0.1
*/
public String execute(String cmd){
String result="";
try {
if(login()){
Session session= conn.openSession();//打开一个会话
session.execCommand(cmd);//执行命令
result=processStdout(session.getStdout(),DEFAULTCHART);
//如果为得到标准输出为空，说明脚本执行出错了
if(StringUtils.isBlank(result)){
result=processStdout(session.getStderr(),DEFAULTCHART);
}
conn.close();
session.close();
}
} catch (IOException e) {
e.printStackTrace();
}
return result;
}


/**
* @author Ickes
* 远程执行shll脚本或者命令
* @param cmd
* 即将执行的命令
* @return
* 命令执行成功后返回的结果值，如果命令执行失败，返回空字符串，不是null
* @since V0.1
*/
public String executeSuccess(String cmd){
String result="";
try {
if(login()){
Session session= conn.openSession();//打开一个会话
session.execCommand(cmd);//执行命令
result=processStdout(session.getStdout(),DEFAULTCHART);
conn.close();
session.close();
}
} catch (IOException e) {
e.printStackTrace();
}
return result;
}

/**
* 解析脚本执行返回的结果集
* @author Ickes
* @param in 输入流对象
* @param charset 编码
* @since V0.1
* @return
* 以纯文本的格式返回
*/
private String processStdout(InputStream in, String charset){
InputStream stdout = new StreamGobbler(in);
StringBuffer buffer = new StringBuffer();;
try {
BufferedReader br = new BufferedReader(new InputStreamReader(stdout,charset));
String line=null;
while((line=br.readLine()) != null){
buffer.append(line+" ");
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return buffer.toString();
}

public static void setCharset(String charset) {
DEFAULTCHART = charset;
}
public Connection getConn() {
return conn;
}
public void setConn(Connection conn) {
this.conn = conn;
}
public String getIp() {
return ip;
}
public void setIp(String ip) {
this.ip = ip;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserPwd() {
return userPwd;
}
public void setUserPwd(String userPwd) {
this.userPwd = userPwd;
}
public static void main(String[] args) {
RemoteExecuteCommand rec=new RemoteExecuteCommand("172.20.188.157", "root","[email protected]");
//执行命令
//System.out.println(rec.execute("cd /data/app"));

//执行脚本
//System.out.println(rec.execute("/bin/sh /data/app/cassistant/startbatch.sh start cAssistantrightweb"));
//System.out.println(rec.execute("/bin/sh /data/app/cassistant/ice.sh"));
System.out.println(rec.execute("ps -ef|grep icepatch2server "));
//System.out.println(rec.execute("/bin/sh /data/app/test.sh"));
//这个方法与上面最大的区别就是，上面的方法，不管执行成功与否都返回，
//这个方法呢，如果命令或者脚本执行错误将返回空字符串
// rec.executeSuccess("ifconfig");

}
}