使用JAVA执行shell

Posted 2020-12-23 老YAN

引入依赖
1         <dependency>
2             <groupId>ch.ethz.ganymed</groupId>
3             <artifactId>ganymed-ssh2</artifactId>
4             <version>262</version>
5         </dependency>

创建Connection并连接
1 Connection conn = new Connection("47.112.138.184");
2 conn.connect();

需要账号密码登录的机器，进行校验，返回布尔值
1 boolean login = conn.authenticateWithPassword(ACCOUNT, PASSWORD);

打开回话，并执行shell指令
1 Session session = conn.openSession();
2 session.execCommand("cd /home/scripts;ls");　　　　//多条指令时，用英文半角顿号隔开

getStdout()方法可拿到一个输入流，即远端控制台返回的数据

1 StreamGobbler gobbler = new StreamGobbler(session.getStdout());
2 BufferedReader reader = new BufferedReader(new InputStreamReader(gobbler));

　流处理
    StringBuilder result = new StringBuilder();
    while(true) {
        String readLine = reader.readLine();
        if (readLine == null) {
            reader.close();
            break;
        }
        result.append(readLine).append("

");
    }    

 

 

getExitStatus()可获取指令执行结果，0-成功；1-失败

1 Integer exitStatus = session.getExitStatus();

切记：关闭reader、session、conn

 

 

 

 以下为完整可用的工具类
 1 　　　　 Connection conn = new Connection("IP");
 2         conn.connect();
 3         boolean login = conn.authenticateWithPassword("ACCOUNT", "PASSWORD");
 4         if (login) {
 5             Session session = conn.openSession();
 6             session.execCommand("cd /home/scripts;ls");
 7             StreamGobbler gobbler = new StreamGobbler(session.getStdout());
 8             BufferedReader reader = new BufferedReader(new InputStreamReader(gobbler));
 9             
10             StringBuilder result = new StringBuilder();
11             while(true) {
12                 String readLine = reader.readLine();
13                 if (readLine == null) {
14                     reader.close();
15                     break;
16                 }
17                 result.append(readLine).append("

");
18             }
19             
20             Integer exitStatus = session.getExitStatus();
21             session.close();
22 
23             System.err.println("result:"+result);
24             System.err.println("exit ? " + exitStatus);
25         }
26         
27         if (conn != null) {
28             conn.close();
29         }