通过java scp
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scp via java
提问by Lloyd Meinholz
What is the best method of performing an scp transfer via the Java programming language? It seems I may be able to perform this via JSSE, JSch or the bouncy castle java libraries. None of these solutions seem to have an easy answer.
通过 Java 编程语言执行 scp 传输的最佳方法是什么？看来我可以通过 JSSE、JSch 或充气城堡 Java 库来执行此操作。这些解决方案似乎都没有一个简单的答案。
采纳答案by Tim Howland
回答by Kyle Burton
The openssh projectlists several Java alternatives, Trilead SSH for Javaseems to fit what you're asking for.
在OpenSSH的项目列出几个Java的替代品，三铅SSH的Java似乎符合你要求的。
回答by abarax
Take a lookhere
看看这里
That is the source code for Ants' SCP task. The code in the "execute" method is where the nuts and bolts of it are. This should give you a fair idea of what is required. It uses JSch i believe.
那是 Ants 的 SCP 任务的源代码。“execute”方法中的代码是它的具体细节所在。这应该让您对需要什么有一个公平的了解。我相信它使用 JSch。
Alternatively you could also directly execute this Ant task from your java code.
或者，您也可以直接从您的 Java 代码执行此 Ant 任务。
回答by Tim Howland
I use this SFTP API which has SCP called Zehon, it's great, so easy to use with a lot of sample code. Here is the site http://www.zehon.com
我使用这个 SFTP API，它有一个名为 Zehon 的 SCP，它很棒，很容易使用很多示例代码。这是网站http://www.zehon.com
回答by shikhar
回答by Will
I wrapped Jsch with some utility methods to make it a bit friendlier and called it
我用一些实用方法包裹了 Jsch 使它更友好一些并称之为
Jscp
Jscp
Available here: https://github.com/willwarren/jscp
可在此处获得：https: //github.com/willwarren/jscp
SCP utility to tar a folder, zip it, and scp it somewhere, then unzip it.
SCP 实用程序，用于对文件夹进行 tar 压缩、压缩，然后将其 scp 到某处，然后解压缩。
Usage:
用法：
// create secure context
SecureContext context = new SecureContext("userName", "localhost");
// set optional security configurations.
context.setTrustAllHosts(true);
context.setPrivateKeyFile(new File("private/key"));
// Console requires JDK 1.7
// System.out.println("enter password:");
// context.setPassword(System.console().readPassword());
Jscp.exec(context,
"src/dir",
"destination/path",
// regex ignore list
Arrays.asList("logs/log[0-9]*.txt",
"backups")
);
Also includes useful classes - Scp and Exec, and a TarAndGzip, which work in pretty much the same way.
还包括有用的类 - Scp 和 Exec，以及 TarAndGzip，它们的工作方式几乎相同。
回答by boomz
I wrote an scp server which is much easier than others. I use Apache MINA project (Apache SSHD) to develop it. You can take a look here: https://github.com/boomz/JSCPAlso you can download the jar file from /jardirectory.
How to use? Take a look on: https://github.com/boomz/JSCP/blob/master/src/Main.java
我写了一个比其他人容易得多的 scp 服务器。我使用 Apache MINA 项目（Apache SSHD）来开发它。您可以在这里查看：https: //github.com/boomz/JSCP您也可以从/jar目录下载 jar 文件。如何使用？看看：https: //github.com/boomz/JSCP/blob/master/src/Main.java
回答by faisalbhagat
JSch is a nice library to work with. It has quite an easy answer for your question.
JSch 是一个很好的库。对于您的问题，它有一个非常简单的答案。
JSch jsch=new JSch();
Session session=jsch.getSession(user, host, 22);
session.setPassword("password");
Properties config = new Properties();
config.put("StrictHostKeyChecking","no");
session.setConfig(config);
session.connect();
boolean ptimestamp = true;
// exec 'scp -t rfile' remotely
String command="scp " + (ptimestamp ? "-p" :"") +" -t "+rfile;
Channel channel=session.openChannel("exec");
((ChannelExec)channel).setCommand(command);
// get I/O streams for remote scp
OutputStream out=channel.getOutputStream();
InputStream in=channel.getInputStream();
channel.connect();
if(checkAck(in)!=0){
System.exit(0);
}
File _lfile = new File(lfile);
if(ptimestamp){
command="T "+(_lfile.lastModified()/1000)+" 0";
// The access time should be sent here,
// but it is not accessible with JavaAPI ;-<
command+=(" "+(_lfile.lastModified()/1000)+" 0\n");
out.write(command.getBytes()); out.flush();
if(checkAck(in)!=0){
System.exit(0);
}
}
You can find complete code at
您可以在以下位置找到完整的代码
http://faisalbhagat.blogspot.com/2013/09/java-uploading-file-remotely-via-scp.html
http://faisalbhagat.blogspot.com/2013/09/java-uploading-file-remotely-via-scp.html
回答by Daniel Kaplan
I looked at a lot of these solutions and didn't like many of them. Mostly because the annoying step of having to identify your known hosts. That and JSCH is at a ridiculously low level relative to the scp command.
我看了很多这些解决方案，但并不喜欢其中的很多。主要是因为必须识别已知主机的烦人步骤。这和 JSCH 相对于 scp 命令处于低得离谱的水平。
I found a library that doesn't require this but it's bundled up and used as a command line tool. https://code.google.com/p/scp-java-client/
我找到了一个不需要这个的库，但它被捆绑起来用作命令行工具。 https://code.google.com/p/scp-java-client/
I looked through the source code and discovered how to use it without the command line. Here's an example of uploading:
我查看了源代码并发现了如何在没有命令行的情况下使用它。下面是一个上传示例：
uk.co.marcoratto.scp.SCP scp = new uk.co.marcoratto.scp.SCP(new uk.co.marcoratto.scp.listeners.SCPListenerPrintStream());
scp.setUsername("root");
scp.setPassword("blah");
scp.setTrust(true);
scp.setFromUri(file.getAbsolutePath());
scp.setToUri("root@host:/path/on/remote");
scp.execute();
The biggest downside is that it's not in a maven repo (that I could find). But, the ease of use is worth it to me.
最大的缺点是它不在 Maven 仓库中（我可以找到）。但是，易用性对我来说是值得的。
回答by Eduardo Dennis
jsCH has worked great for me. Below is an example of a method that will connect to sftp server and download files to specified directory. It is recommended to stay away from disabling StrictHostKeyChecking. Although a little bit more difficult to set up, for security reasons specifying the known hosts should be the norm.
jsCH 对我很有用。下面是连接到 sftp 服务器并将文件下载到指定目录的方法示例。建议远离禁用 StrictHostKeyChecking。虽然设置起来有点困难，但出于安全原因，指定已知主机应该是常态。
jsch.setKnownHosts("C:\Users\test\known_hosts");recommended
jsch.setKnownHosts("C:\Users\test\known_hosts"); 受到推崇的
JSch.setConfig("StrictHostKeyChecking", "no");- not recommended
JSch.setConfig("StrictHostKeyChecking", "no"); - 不建议
import com.jcraft.jsch.*;
public void downloadFtp(String userName, String password, String host, int port, String path) {
Session session = null;
Channel channel = null;
try {
JSch ssh = new JSch();
JSch.setConfig("StrictHostKeyChecking", "no");
session = ssh.getSession(userName, host, port);
session.setPassword(password);
session.connect();
channel = session.openChannel("sftp");
channel.connect();
ChannelSftp sftp = (ChannelSftp) channel;
sftp.get(path, "specify path to where you want the files to be output");
} catch (JSchException e) {
System.out.println(userName);
e.printStackTrace();
} catch (SftpException e) {
System.out.println(userName);
e.printStackTrace();
} finally {
if (channel != null) {
channel.disconnect();
}
if (session != null) {
session.disconnect();
}
}
}
