我是这类Java应用程序的新手,正在寻找一些示例代码,介绍如何使用SSH连接到远程服务器,执行命令,并使用Java作为编程语言获取输出.
我无法弄清楚如何通过JSch shell通道发送命令.
我这样做,但它不起作用:
JSch shell = new JSch();
String command = "cd home/s/src";
Session session = shell.getSession(username, host, port);
MyUserInfo ui = new MyUserInfo();
ui.setPassword(password);
session.setUserInfo(ui);
session.connect();
channel = session.openChannel("shell");
fromServer = new BufferedReader(new InputStreamReader(channel.getInputStream()));
toServer = channel.getOutputStream();
channel.connect();
toServer.write((command + "\r\n").getBytes());
toServer.flush();
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然后我读取这样的输入:
StringBuilder builder = new StringBuilder();
int count = 0;
String line = "";
while(line != null) {
line = fromServer.readLine();
builder.append(line).append("\n");
if (line.endsWith(".") || line.endsWith(">")){
break;
}
}
String result = builder.toString();
ConsoleOut.println(result);
Run Code Online (Sandbox Code Playgroud) 这是我的代码,它在远程服务器上检索文件的内容并显示为输出.
package sshexample;
import com.jcraft.jsch.*;
import java.io.*;
public class SSHexample
{
public static void main(String[] args)
{
String user = "user";
String password = "password";
String host = "192.168.100.103";
int port=22;
String remoteFile="sample.txt";
try
{
JSch jsch = new JSch();
Session session = jsch.getSession(user, host, port);
session.setPassword(password);
session.setConfig("StrictHostKeyChecking", "no");
System.out.println("Establishing Connection...");
session.connect();
System.out.println("Connection established.");
System.out.println("Creating SFTP Channel.");
ChannelSftp sftpChannel = (ChannelSftp) session.openChannel("sftp");
sftpChannel.connect();
System.out.println("SFTP Channel created.");
InputStream out= null;
out= sftpChannel.get(remoteFile);
BufferedReader br = new BufferedReader(new InputStreamReader(out));
String line;
while …Run Code Online (Sandbox Code Playgroud) 我有以下代码:
JSch jsch = new JSch();
jsch.setKnownHosts(dotSshDir + "/known_hosts");
jsch.addIdentity(dotSshDir + "/id_rsa");
Session session = jsch.getSession(userName, hostname, 22);
session.connect();
ChannelExec channel = (ChannelExec) session.openChannel("exec");
channel.setCommand(command);
channel.setInputStream(null);
channel.setErrStream(System.err);
Reader reader = new InputStreamReader(channel.getInputStream());
char[] buf = new char[1024];
int numRead;
while ((numRead = reader.read(buf)) != -1) {
String readData = String.valueOf(buf, 0, numRead);
result.append(readData);
buf = new char[1024];
}
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它试图从读者那里读取.我该如何解决?我该怎么做才能找到正在发生的事情?
我正在使用Jsch跟踪服务器日志。当我关闭执行通道和会话时,“ tail -f ...”进程仍在服务器端保持活动状态。
我尝试这样做,channel.sendSignal("KILL")但抛出异常:
com.jcraft.jsch.JSchException: failed to send channel request
我该如何彻底断开连接?
我明白有重复的>>>从副本中复制>>>只要您的本地机器有一台运行<<<<<的SSH服务器,但我无法发表评论,也不能从问题中解决(并且我没有提供答案. ...)
它声明"只要您的本地计算机运行SSH服务器",但我不知道如何运行SSh服务器.我打开我的腻子(双击它)(不确定这是否意味着SSH(?Putty?)服务器(?)正在运行...怀疑...
我是套接字编程的新手.我正在利用JSch(http://www.jcraft.com/jsch/)尝试连接到远程服务器(后期阶段),这是我使用的代码,我试图连接到我的本地计算机和执行命令(确切地说是ls)来进行测试.但是,我一直拒绝连接.我用谷歌搜索,我注意到有一些文章提到"有服务器监听",但我不知道它意味着什么.请查看我的代码如下.
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Properties;
import com.jcraft.jsch.*;
class SwingWorkerExample {
JTextField hostField;
JTextField userNameField;
JTextField passwordField;
JPanel panel;
public SwingWorkerExample() {
JPanel p = panel = new JPanel(new GridLayout(0,2));
hostField = new JTextField(20);
userNameField = new JTextField(20);
passwordField = new JPasswordField(20);
JButton testButton = new JButton("connect!");
testButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
testConnectionButtonActionPerformed(ev);
}
});
p.add(new JLabel("host:"));
//127.0.0.1
p.add(hostField);
p.add(new JLabel("user:"));
//mycomputerusername
p.add(userNameField); …Run Code Online (Sandbox Code Playgroud)