无法运行程序“...”错误=2，没有那个文件或目录（java）
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Cannot run program "..." error=2, No such file or directory (java)
提问by Spud
I am trying to make a java program that will set up a SSH connection for me on my macbook. It prompts me for the username, and then the IP address, then it is supposed to do "ssh username@ip".
我正在尝试制作一个 java 程序，它将在我的 macbook 上为我设置 SSH 连接。它提示我输入用户名，然后是 IP 地址，然后它应该执行“ssh username@ip”。
Below is my code:
下面是我的代码：
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Scanner;
public class SSH {
public static void main(String[] args) throws Exception {
boolean rep = true;
String username = (null);
String IPAdress = (null);
while (rep) {
Scanner scanner = new Scanner(System.in);
System.out.print("Username: ");
username = scanner.next();
System.out.print("\nIP Adress: ");
IPAdress = scanner.next();
System.out.println("\n\nIs this correct?\nUsername: " + username + "\nIP Adress: " + IPAdress + "\nY/N");
char responce = scanner.next().charAt(0);
if (responce == 'Y' || responce == 'y') {
rep = false;
scanner.close();
} else if (responce == 'N' || responce == 'n') {
} else {
Error displayErrorMessage = new Error();
displayErrorMessage.displayError();
}
}
String SSHStartup = username + "@" + IPAdress;
System.out.println("Running command: ssh " + SSHStartup);
String[] command = { "/bin/bash, -c , ssh " + SSHStartup };
Process p = Runtime.getRuntime().exec(command);
p.waitFor();
BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line = "";
StringBuffer output = new StringBuffer();
while ((line = reader.readLine()) != null) {
output.append(line + "\n");
}
}
}
I know, its messy, and now well indented, but instead of executing the command, it gives me this:
我知道，它很乱，现在缩进得很好，但它没有执行命令，而是给了我这个：
Exception in thread "main" java.io.IOException: Cannot run program "/bin/bash, -c , ssh root@(ip here)": error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at java.lang.Runtime.exec(Runtime.java:620)
at java.lang.Runtime.exec(Runtime.java:485)
at SSH.main(SSH.java:32)
Caused by: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:248)
at java.lang.ProcessImpl.start(ProcessImpl.java:134)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)
... 3 more
For the purpose of this post, I have removed the IP address, but when I compile and run it, I try the actual one, and it gives me the same error.
为了这篇文章的目的，我已经删除了 IP 地址，但是当我编译和运行它时，我尝试了实际的，它给了我同样的错误。
Help?
帮助？
采纳答案by Kenster
String[] command = { "/bin/bash, -c , ssh " + SSHStartup };
Process p = Runtime.getRuntime().exec(command);
Your commandarray contains a single value, namely the string "/bin/bash, -c , ssh ...". Java is trying and failing to execute a file with that name.
您的command数组包含一个值，即字符串“/bin/bash, -c , ssh ...”。Java 尝试执行具有该名称的文件但失败。
You probably intended to construct a commandcontaining the command and its arguments as a sequence of strings, instead of a single string:
您可能打算构造一个command包含命令及其参数的字符串序列，而不是单个字符串：
String[] command = { "/bin/bash", "-c", "ssh " + SSHStartup };
