一、
1、JSch是Java Secure Channel的缩写。JSch是一个SSH2的纯Java实现。它允许你连接到一个SSH服务器，并且可以使用端口转发，X11转发，文件传输等，当然你也可以集成它的功能到你自己的应用程序。
<dependency> <groupId>com.jcraft</groupId> <artifactId>jsch</artifactId> <version>0.1.53</version> </dependency>
<dependency> <groupId>com.github.cverges.expect4j</groupId> <artifactId>expect4j</artifactId> <version>1.9</version> </dependency>
二、代码样例
参考链接：http://www.cnblogs.com/xuxiuxiu/p/6266583.html
import java.util.ArrayList; import java.util.Hashtable; import java.util.List; import org.apache.log4j.Logger; import org.apache.oro.text.regex.MalformedPatternException; import com.jcraft.jsch.ChannelShell; import com.jcraft.jsch.JSch; import com.jcraft.jsch.Session; import com.jcraft.jsch.UserInfo; import expect4j.Closure; import expect4j.Expect4j; import expect4j.ExpectState; import expect4j.matches.EofMatch; import expect4j.matches.Match; import expect4j.matches.RegExpMatch; import expect4j.matches.TimeoutMatch; public class Shell { private static Logger log = Logger.getLogger(Shell.class); private Session session; private ChannelShell channel; private static Expect4j expect = null; private static final long defaultTimeOut = 1000; private StringBuffer buffer=new StringBuffer(); public static final int COMMAND_EXECUTION_SUCCESS_OPCODE = -2; public static final String BACKSLASH_R = " "; public static final String BACKSLASH_N = " "; public static final String COLON_CHAR = ":"; public static String ENTER_CHARACTER = BACKSLASH_R; public static final int SSH_PORT = 22; //正则匹配，用于处理服务器返回的结果 public static String[] linuxPromptRegEx = new String[] { "~]#", "~#", "#", ":~#", "/$", ">" }; public static String[] errorMsg=new String[]{"could not acquire the config lock "}; //ssh服务器的ip地址 private String ip; //ssh服务器的登入端口 private int port; //ssh服务器的登入用户名 private String user; //ssh服务器的登入密码 private String password; public Shell(String ip,int port,String user,String password) { this.ip=ip; this.port=port; this.user=user; this.password=password; expect = getExpect(); } /** * 关闭SSH远程连接 */ public void disconnect(){ if(channel!=null){ channel.disconnect(); } if(session!=null){ session.disconnect(); } } /** * 获取服务器返回的信息 * @return 服务端的执行结果 */ public String getResponse(){ return buffer.toString(); } //获得Expect4j对象，该对用可以往SSH发送命令请求 private Expect4j getExpect() { try { log.debug(String.format("Start logging to %s@%s:%s",user,ip,port)); JSch jsch = new JSch(); session = jsch.getSession(user, ip, port); session.setPassword(password); Hashtable<String, String> config = new Hashtable<String, String>(); config.put("StrictHostKeyChecking", "no"); session.setConfig(config); localUserInfo ui = new localUserInfo(); session.setUserInfo(ui); session.connect(); // 建立通信通道 channel = (ChannelShell) session.openChannel("shell"); Expect4j expect = new Expect4j(channel.getInputStream(), channel.getOutputStream()); channel.connect(); log.debug(String.format("Logging to %s@%s:%s successfully!",user,ip,port)); return expect; } catch (Exception ex) { log.error("Connect to "+ip+":"+port+"failed,please check your username and password!"); ex.printStackTrace(); } return null; } /** * 执行配置命令 * @param commands 要执行的命令，为字符数组 * @return 执行是否成功 */ public boolean executeCommands(String[] commands) { //如果expect返回为0，说明登入没有成功 if(expect==null){ return false; } log.debug("----------Running commands are listed as follows:----------"); for(String command:commands){ log.debug(command); } log.debug("----------End----------"); Closure closure = new Closure() { public void run(ExpectState expectState) throws Exception { buffer.append(expectState.getBuffer()); expectState.exp_continue(); } }; List<Match> lstPattern = new ArrayList<Match>(); String[] regEx = linuxPromptRegEx; if (regEx != null && regEx.length > 0) { synchronized (regEx) { for (String regexElement : regEx) { try { RegExpMatch mat = new RegExpMatch(regexElement, closure); lstPattern.add(mat); } catch (MalformedPatternException e) { return false; } catch (Exception e) { return false; } } lstPattern.add(new EofMatch(new Closure() { public void run(ExpectState state) { } })); lstPattern.add(new TimeoutMatch(defaultTimeOut, new Closure() { public void run(ExpectState state) { } })); } } try { boolean isSuccess = true; for (String strCmd : commands){ isSuccess = isSuccess(lstPattern, strCmd); } //防止最后一个命令执行不了 isSuccess = !checkResult(expect.expect(lstPattern)); //找不到错误信息标示成功 String response=buffer.toString().toLowerCase(); for(String msg:errorMsg){ if(response.indexOf(msg)>-1){ return false; } } return isSuccess; } catch (Exception ex) { ex.printStackTrace(); return false; } } //检查执行是否成功 private boolean isSuccess(List<Match> objPattern, String strCommandPattern) { try { boolean isFailed = checkResult(expect.expect(objPattern)); if (!isFailed) { expect.send(strCommandPattern); expect.send(" "); return true; } return false; } catch (MalformedPatternException ex) { return false; } catch (Exception ex) { return false; } } //检查执行返回的状态 private boolean checkResult(int intRetVal) { if (intRetVal == COMMAND_EXECUTION_SUCCESS_OPCODE) { return true; } return false; } //登入SSH时的控制信息 //设置不提示输入密码、不显示登入信息等 public static class localUserInfo implements UserInfo { String passwd; public String getPassword() { return passwd; } public boolean promptYesNo(String str) { return true; } public String getPassphrase() { return null; } public boolean promptPassphrase(String message) { return true; } public boolean promptPassword(String message) { return true; } public void showMessage(String message) { } } }