java 遠端執行 linux 命令
阿新 • • 發佈:2019-02-18
Maven:
<!-- https://mvnrepository.com/artifact/ch.ethz.ganymed/ganymed-ssh2 -->
<dependency>
<groupId>ch.ethz.ganymed</groupId>
<artifactId>ganymed-ssh2</artifactId>
<version>build210</version>
</dependency>
package ;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;
/**
* @Description 遠端執行linux命令
*/
public class SSHUtil {
private String host; // ip
private String username;
private String password;
/**
* @param host(ip)
* @param username(使用者名稱)
* @param password(密碼)
*/
public SSHUtil(String host, String username, String password) {
this.host = host;
this.username = username;
this.password = password;
}
private Connection conn = null ;
/**
* 連線
*/
private boolean connect() {
conn = new Connection(host);
try {
conn.connect();
if (conn.authenticateWithPassword(username, password)) {
return true;
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
/**
* 執行命令
*/
public String execute(String command) {
if (command == null || "null".equals(command)) {
return "傳入命令為空!!!";
}
if (!connect()) {
return "連線伺服器失敗!!!";
}
Session session = null;
try {
session = conn.openSession();
session.execCommand(command);
InputStream stdout = new StreamGobbler(session.getStdout());
BufferedReader br = new BufferedReader(new InputStreamReader(stdout));
StringBuffer sb = new StringBuffer();
// ExitCode正常為0
// 1:報錯、2:誤用命令、126:命令不得執行、127:沒找到命令、130:ctrl+c結束、255:返回碼超出範圍
sb.append("ExitCode: " + session.getExitStatus() + "\n");
while (true) {
String line = br.readLine();
if (line == null)
break;
sb.append(line + "\n");
}
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
return "error";
} finally {
if (conn != null) {
conn.close();
}
if (session != null) {
session.close();
}
}
}
}
每次執行不同的物件的時候都會重新連線一次,懶得判斷。
execCommand(cmd) 方法好像可以傳進去一個String陣列,懶得測。
我執行的命令經常給我返回ExitCode: null
反正正確執行了也懶得查什麼原因了。