Java-JSCH Library-Run命令,需要密码
我正在编写一个java程序,它在本地Linux主机上运行rsync,将数据复制到远程主机。我正在使用jsch库。我查看了jsch示例,但没有发现任何相关内容Java-JSCH Library-Run命令,需要密码,java,jsch,Java,Jsch,我正在编写一个java程序,它在本地Linux主机上运行rsync,将数据复制到远程主机。我正在使用jsch库。我查看了jsch示例,但没有发现任何相关内容 Properties config = new Properties(); config.put("StrictHostKeyChecking", "no"); JSch jsch = new JSch(); Session session=j
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
Session session=jsch.getSession(user, host, 22);
session.setPassword(password);
session.setConfig(config);
session.connect();
System.out.println("Connected");
Channel channel=session.openChannel("exec");
//write the command, which expects password
((ChannelExec)channel).setCommand("command");
((ChannelExec)channel).setErrStream(System.err);
((ChannelExec)channel).setPty(true);
System.out.println("Password taken");
InputStream in=channel.getInputStream();
channel.connect();
OutputStream out=channel.getOutputStream();
//give the password below
out.write(("password\n").getBytes());
out.flush();
//write your commands
PrintStream out1= new PrintStream(out);
out1.println("command1");
out1.println("command2");
...................
out1.flush();
我无法设置密钥身份验证,所以我希望在rsync命令运行时自动输入远程主机的密码
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
Session session=jsch.getSession(user, host, 22);
session.setPassword(password);
session.setConfig(config);
session.connect();
System.out.println("Connected");
Channel channel=session.openChannel("exec");
//write the command, which expects password
((ChannelExec)channel).setCommand("command");
((ChannelExec)channel).setErrStream(System.err);
((ChannelExec)channel).setPty(true);
System.out.println("Password taken");
InputStream in=channel.getInputStream();
channel.connect();
OutputStream out=channel.getOutputStream();
//give the password below
out.write(("password\n").getBytes());
out.flush();
//write your commands
PrintStream out1= new PrintStream(out);
out1.println("command1");
out1.println("command2");
...................
out1.flush();
我在网上搜索了一些方法,但没有找到任何简单的方法
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
Session session=jsch.getSession(user, host, 22);
session.setPassword(password);
session.setConfig(config);
session.connect();
System.out.println("Connected");
Channel channel=session.openChannel("exec");
//write the command, which expects password
((ChannelExec)channel).setCommand("command");
((ChannelExec)channel).setErrStream(System.err);
((ChannelExec)channel).setPty(true);
System.out.println("Password taken");
InputStream in=channel.getInputStream();
channel.connect();
OutputStream out=channel.getOutputStream();
//give the password below
out.write(("password\n").getBytes());
out.flush();
//write your commands
PrintStream out1= new PrintStream(out);
out1.println("command1");
out1.println("command2");
...................
out1.flush();
下面的函数只是执行提供给它的命令,这个函数是一个类的一部分,这个类包含服务器、用户名和密码
public int executeCommand(String command) throws Exception {
JSch jsch = new JSch();
Session session = null;
Channel channel = null;
int exitCode;
try {
//Initialize session
session = jsch.getSession(this.username, this.server, 22);
session.setPassword(this.password);
session.setConfig("StrictHostKeyChecking", "no");
session.setConfig("PreferredAuthentications", "publickey,password");
//Connect
session.connect();
//Open a channel for communication
channel = session.openChannel("shell");
OutputStream ops = channel.getOutputStream();
PrintStream ps = new PrintStream(ops, true);
channel.connect();
logger.info("Sending command {} ",command);
ps.println(command);
ps.flush();
InputStream inputStream = channel.getInputStream();
processOutput(inputStream, "password:", timeout);
logger.info("Sending password.");
ps.println(this.targetPassword);
ps.flush();
processOutput(inputStream, "total size is", timeout);
//Get the process exit code
String exitCodeCommand = "echo $?";
logger.info("Sending command {} ",exitCodeCommand);
ps.println(exitCodeCommand);
ps.flush();
String exitCodeOutput = processOutput(inputStream, "", 0.5);
String[] outputArray = exitCodeOutput.split(System.lineSeparator());
if (outputArray.length < 2) {
String msg = String.format("Exit code of command $1%s is invalid %2$s", exitCodeCommand,
exitCodeOutput);
throw new Exception(msg);
}
try {
exitCode = Integer.parseInt(outputArray[1]);
} catch (NumberFormatException nfe) {
logger.error("Exception occurred while parsing {}", outputArray[1], nfe);
String msg = String.format("Exit code of command $1%s is invalid %2$s. Exit code parsed %3$s is " +
"not an integer", exitCodeCommand, exitCodeOutput, outputArray[2]);
throw new Exception(msg);
}
logger.info("Exit code {}", exitCode);
inputStream.close();
ps.close();
channel.disconnect();
session.disconnect();
} catch (JSchException e) {
logger.error("Exception occurred while creating session with {}. Error message {}", this.server, e
.getMessage(), e);
} catch (IOException e) {
logger.error("Exception occurred while creating performing IO with server {}. Error message {}", this
.server, e.getMessage(), e);
} finally {
logger.info("Closing channels");
if (channel != null && !channel.isClosed()) {
channel.disconnect();
}
if (session != null) {
session.disconnect();
}
}
return exitCode;
}
private String processOutput(InputStream inputStream, String outToFind, double timeout) throws Exception {
byte[] bt = new byte[1024];
StringBuilder builder = new StringBuilder();
double timeoutBeforeExit = timeout * 1000 * 60;
double timeElapsed = 0;
while (true) {
try {
while (inputStream.available() > 0) {
int i = inputStream.read(bt, 0, 1024);
if (i < 0) {
break;
}
String str = new String(bt, 0, i);
builder.append(str);
//displays the output of the command executed for debug purpose.
logger.info(str);
if (str.contains(outToFind)) {
logger.info("{} output is found.", outToFind);
return builder.toString();
} else {
logger.info("{} is not matched", str);
}
}
} catch (IOException e) {
logger.error("Exception occurred while creating performing IO with server {}. Error message {}", this
.server, e.getMessage(), e);
throw new Exception(e.getMessage());
}
timeElapsed = timeElapsed + SLEEP_TIME;
if (timeElapsed >= timeoutBeforeExit) {
throw new Exception("Timeout while waiting for output.");
}
try {
Thread.sleep(SLEEP_TIME);
} catch (InterruptedException e) {
logger.warn("Benign exception occurred inputStream thread sleep. Continuing.", e);
}
}
}
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
Session session=jsch.getSession(user, host, 22);
session.setPassword(password);
session.setConfig(config);
session.connect();
System.out.println("Connected");
Channel channel=session.openChannel("exec");
//write the command, which expects password
((ChannelExec)channel).setCommand("command");
((ChannelExec)channel).setErrStream(System.err);
((ChannelExec)channel).setPty(true);
System.out.println("Password taken");
InputStream in=channel.getInputStream();
channel.connect();
OutputStream out=channel.getOutputStream();
//give the password below
out.write(("password\n").getBytes());
out.flush();
//write your commands
PrintStream out1= new PrintStream(out);
out1.println("command1");
out1.println("command2");
...................
out1.flush();
public int executeCommand(字符串命令)引发异常{
JSch JSch=新的JSch();
会话=空;
通道=空;
int exitCode;
试一试{
//初始化会话
session=jsch.getSession(this.username,this.server,22);
session.setPassword(this.password);
session.setConfig(“StrictHostKeyChecking”、“no”);
setConfig(“首选身份验证”、“公钥、密码”);
//连接
session.connect();
//开辟沟通渠道
channel=session.openChannel(“shell”);
OutputStream ops=channel.getOutputStream();
PrintStream ps=新的PrintStream(ops,true);
channel.connect();
info(“发送命令{}”,命令);
ps.println(命令);
ps.flush();
InputStream InputStream=channel.getInputStream();
processOutput(输入流,“密码:”,超时);
logger.info(“发送密码”);
ps.println(此.targetPassword);
ps.flush();
processOutput(inputStream,“总大小为”,超时);
//获取进程退出代码
字符串exitCodeCommand=“echo$?”;
info(“发送命令{}”,exitCodeCommand);
ps.println(exitCodeCommand);
ps.flush();
字符串exitCodeOutput=processOutput(inputStream,“”,0.5);
字符串[]outputArray=exitCodeOutput.split(System.lineSeparator());
if(输出阵列长度<2){
String msg=String.format(“命令$1%s的退出代码无效%2$s”),exitCodeCommand,
出口(出口);
抛出新异常(msg);
}
试一试{
exitCode=Integer.parseInt(outputArray[1]);
}捕获(NumberFormatException nfe){
错误(“分析{}时发生异常”,outputArray[1],nfe);
String msg=String.format(“命令$1%s的退出代码无效%2$s。解析的退出代码%3$s为”+
“非整数”,exitCodeCommand,exitCodeOutput,outputArray[2]);
抛出新异常(msg);
}
info(“退出代码{}”,exitCode);
inputStream.close();
ps.close();
通道断开();
session.disconnect();
}捕获(JSCHEException e){
logger.error(“使用{}创建会话时发生异常。错误消息{}”),this.server,e
.getMessage(),e);
}捕获(IOE异常){
logger.error(“使用服务器{}创建执行IO时发生异常。错误消息{}”),此
.server,e.getMessage(),e);
}最后{
logger.info(“关闭频道”);
if(channel!=null&&!channel.isClosed()){
通道断开();
}
if(会话!=null){
session.disconnect();
}
}
返回exitCode;
}
私有字符串processOutput(InputStream InputStream、String outToFind、双超时)引发异常{
字节[]bt=新字节[1024];
StringBuilder=新的StringBuilder();
double timeoutBeforeExit=超时*1000*60;
双时间流逝=0;
while(true){
试一试{
while(inputStream.available()>0){
inti=inputStream.read(bt,0,1024);
if(i<0){
打破
}
String str=新字符串(bt,0,i);
附加(str);
//显示为调试目的执行的命令的输出。
记录器信息(str);
if(str.contains(outToFind)){
info(“{}找到输出。”,outToFind);
返回builder.toString();
}否则{
logger.info(“{}不匹配”,str);
}
}
}捕获(IOE异常){
logger.error(“使用服务器{}创建执行IO时发生异常。错误消息{}”),此
.server,e.getMessage(),e);
抛出新异常(如getMessage());
}
时间流逝=时间流逝+睡眠时间;
if(timeappeased>=timeoutbeforexit){
抛出新异常(“等待输出时超时”);
}
试一试{
睡眠(睡眠时间);
}捕捉(中断异常e){
logger.warn(“inputStream线程睡眠时发生良性异常。正在继续。”,e);
}
}
}
您可以尝试以下代码。它会自动读取提供的密码并继续运行下一个命令
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
Session session=jsch.getSession(user, host, 22);
session.setPassword(password);
session.setConfig(config);
session.connect();
System.out.println("Connected");
Channel channel=session.openChannel("exec");
//write the command, which expects password
((ChannelExec)channel).setCommand("command");
((ChannelExec)channel).setErrStream(System.err);
((ChannelExec)channel).setPty(true);
System.out.println("Password taken");
InputStream in=channel.getInputStream();
channel.connect();
OutputStream out=channel.getOutputStream();
//give the password below
out.write(("password\n").getBytes());
out.flush();
//write your commands
PrintStream out1= new PrintStream(out);
out1.println("command1");
out1.println("command2");
...................
out1.flush();
我建议您考虑在JSCH之上使用一个类似于WEB的库。在维基百科上查看备选方案列表:,以及我自己的实现。