Java SSH远程执行Shell命令shell脚本实现（Ganymed SSH）

Posted 2020-12-04 架构师小跟班

jar包下载地址：

http://www.ganymed.ethz.ch/ssh2/

此源码的好处就是没有依赖很多其他的包，拷贝过来干干净净。具体代码实现可以看下文，或参考官方文档，在下载的压缩包里ganymed-ssh2-build210examples目录下有示例。

package com.system.action;
  
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import com.system.service.MonitorService;
import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;
import util.dataSource.SwitchDataSourceUtil;
import util.page.BaseAction;
  
/**
 * 服务器监控
 * @author wangxiangyu
 *
 */
@Controller
@RequestMapping("/monitor")
@SuppressWarnings("all")
public class MonitorController extends BaseAction {
  
private static List<String> commands = null;
private static final String JNDI = "pn";//爱运维管理员权限数据源
  
@Autowired
MonitorService monitorService;
/**
 * 进入监控页面，获取服务器配置（ip，登录名，密码）
 * @param request
 * @param model
 * @return
 */
@RequestMapping(value = "/index.do")
public String index(HttpServletRequest request, Model model){
String hostName = request.getParameter("hostName");
  
List<Map<String, String>> serverConfigList = monitorService.getServerConfig(hostName);
model.addAttribute("serverConfigList", serverConfigList);
return "system/monitor/monitor";
}
  
/**
 * 初始化命令集合
 */
private void initCommands() {
  
commands = new ArrayList<String>();
commands.add("top");
commands.add("free");
commands.add("df -hl");
commands.add("ps -ef|grep tomcat");
commands.add("ps aux|head -1;ps aux|grep -v PID|sort -rn -k +4|head");
}
  
/**
 * 获取服务器运行状态
 * @param request
 * @param response
 * @throws Exception
 */
@RequestMapping("/findStatus.do")
public void findStatus(HttpServletRequest request, HttpServletResponse response) throws Exception {
//获取服务器配置信息
String hostName = request.getParameter("hostName");
List<Map<String, String>> serverConfigList = monitorService.getServerConfig(hostName);
String userName = serverConfigList.get(0).get("USER_NAME").toString();
String password = serverConfigList.get(0).get("PASSWORD").toString();
//预定义结果集
Map<String, Object> result = new HashMap<String, Object>();
//预定义命令结果集
List<Map<String, String>> commandResults = new ArrayList<Map<String, String>>();
try {
//连接服务器
Connection conn = new Connection(hostName);
conn.connect();
boolean isAuthenticated = conn.authenticateWithPassword(userName, password);
if (isAuthenticated == false) {
throw new IOException("Authentication failed.");
}
//初始化命令参数
initCommands();
for(String command : commands) {
Session sess = conn.openSession();
sess.execCommand(command);
InputStream stdout = new StreamGobbler(sess.getStdout());
BufferedReader br = new BufferedReader(new InputStreamReader(stdout));
StringBuffer details = new StringBuffer("");
while (true){
String line = br.readLine();
if (line == null) {
break;
}
details.append(line).append("<br/>");
System.out.println(details);
}
//封装结果
Map<String, String> commandResult = new HashMap<String, String>();
commandResult.put("hostName", hostName);
commandResult.put("command", command);
commandResult.put("exitCode", null==sess.getExitStatus()?"无":sess.getExitStatus().toString());
commandResult.put("details", (null==details)?"无返回结果":details.toString());
commandResults.add(commandResult);
//关闭流
br.close();
sess.close();
}
conn.close();
result.put("rows", commandResults);
}catch(IOException e) {
e.printStackTrace(System.err);
}
write(response, result);
}
  
/**
 * 查看数据库表空间状态
 * @param request
 * @param response
 * @throws IOException
 */
@RequestMapping("/getDBStatus.do")
public void getDBStatus(HttpServletRequest request, HttpServletResponse response) throws IOException {
List<Map<String, String>> dbResult =  new ArrayList<Map<String,String>>();
try {
//切换数据源
SwitchDataSourceUtil.setCurrentDataSource(JNDI);
dbResult = monitorService.getDBStatus();
SwitchDataSourceUtil.clearDataSource();
}catch(Exception e) {
e.printStackTrace();
}finally {
SwitchDataSourceUtil.clearDataSource();
}
Map<String, Object> result = new HashMap<String, Object>();
result.put("rows", dbResult);
write(response, result);
}
}