我有代码通过ssh连接到远程服务器并向其发送2个或更多命令(例如:cd /export/home/ops/bin
和“./viewlinkload -time 20131205-19”)但我没有看到命令已执行但未收到结果。
我需要从服务器返回结果并显示它。
这是代码发送命令:
try {
command = "cd /export/home/ops/bin";
command1="./viewlinkload –time 20131205-19";
session.startShell();
session.getOutputStream().write(command.getBytes());
ChannelInputStream in = session.getInputStream();
ChannelOutputStream out = session.getOutputStream();
InputStream inputStream = session.getInputStream();
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(inputStream));
StringBuilder stringBuilder = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line);
stringBuilder.append('\n');
}
System.out.println("ke qua" + stringBuilder.toString());
// return stringBuilder.toString();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
如果我更改命令是“ls \ n”在最后一条记录挂起后“while((line = bufferedReader.readLine())!= null)”并且不运行。 帮我。 谢谢大家。
答案 0 :(得分:3)
Jsch在examples目录中有一些很好的例子,你可能会感兴趣的那个例子叫做Exec
。您可能也对Shell
这是一个略微修改的版本,它会跳过从命令行获取信息并提示输入用户信息和命令,只是尝试直接连接到远程计算机并执行ls
命令。
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.UserInfo;
import java.io.InputStream;
import java.util.Properties;
public class TestShell {
public static void main(String[] arg) {
try {
JSch jsch = new JSch();
Session session = jsch.getSession("username", "computer", 22);
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
session.setConfig(config);
// Skip prompting for the password info and go direct...
session.setPassword("happybunnyslippers");
session.connect();
String command = "ls";
Channel channel = session.openChannel("exec");
((ChannelExec) channel).setCommand(command);
((ChannelExec) channel).setErrStream(System.err);
InputStream in = channel.getInputStream();
System.out.println("Connect to session...");
channel.connect();
byte[] tmp = new byte[1024];
while (true) {
while (in.available() > 0) {
int i = in.read(tmp, 0, 1024);
if (i < 0) {
break;
}
System.out.print(new String(tmp, 0, i));
}
if (channel.isClosed()) {
System.out.println("exit-status: " + channel.getExitStatus());
break;
}
try {
Thread.sleep(1000);
} catch (Exception ee) {
}
}
channel.disconnect();
session.disconnect();
} catch (Exception e) {
System.out.println(e);
}
}
}
我在连接到我的Mac盒子的Windows盒子上进行了测试,没有任何问题
更新了黑客的Shell示例
基本上,这是一个基于Shell
示例的黑客示例。
这使用自定义OutputStream
来监视从远程计算机发送的内容的更改,并且可以发出命令。这是非常基本的,因为我正在做的就是等待$
发送到输出流,然后发出下一个命令。
修改它不需要太多工作,因此根据当前的命令/命令索引,你可以做不同的解析......
import com.jcraft.jsch.*;
import java.awt.*;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import javax.swing.*;
public class TestShell {
public static void main(String[] arg) {
try {
JSch jsch = new JSch();
String host = null;
final Session session = jsch.getSession("user", "remotecomputer", 22);
session.setPassword("fluffybunnyslippers");
session.setConfig("StrictHostKeyChecking", "no");
session.connect(30000); // making a connection with timeout.
final Channel channel = session.openChannel("shell");
PipedInputStream pis = new PipedInputStream();
final PipedOutputStream pos = new PipedOutputStream(pis);
channel.setInputStream(pis);
channel.setOutputStream(new OutputStream() {
private int cmdIndx = 0;
private String[] cmds = {
"ls\n",
"cd ..\n",
"ls\n",
"exit\n"
};
private String line = "";
@Override
public void write(int b) throws IOException {
char c = (char) b;
if (c == '\n') {
logout(line);
System.out.print(line);
line = "";
} else {
line += c;
logout(line);
if (line.endsWith("$ ")) {
String cmd = cmds[cmdIndx];
cmdIndx++;
pos.write(cmd.getBytes());
}
}
}
public void logout(String line) {
if (line.startsWith("logout")) {
System.out.println("...logout...");
channel.disconnect();
session.disconnect();
System.exit(0);
}
}
});
channel.connect(3 * 1000);
} catch (Exception e) {
System.out.println(e);
}
}
}