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 = "\r";
public static final String BACKSLASH_N = "\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("\r");
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) { }
} }