我正在尝试从Android手机向raspi发送连续命令。我使用了此链接中的代码，但出现错误。
链接：https://stackoverflow.com/questions/23471439/android-sshexecute-multiple-commands-with-sshj/23806942?noredirect=1#comment36621476_23806942
主要：
package com.example.sshjdeneme;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity implements OnClickListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button buton1 = (Button) findViewById(R.id.button1);
buton1.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Connection conn = new Connection();
conn.execute("sudo uvccapture -m");
}
}
连接类别：
package com.example.sshjdeneme;
import java.io.IOException;
import net.schmizz.sshj.*;
import net.schmizz.sshj.connection.channel.direct.Session;
import net.schmizz.sshj.connection.channel.direct.Session.Command;
import net.schmizz.sshj.transport.TransportException;
import net.schmizz.sshj.userauth.UserAuthException;
import android.os.AsyncTask;
import android.util.Log;
public class Connection extends AsyncTask<String, String, String> {
/**
* @param args
* @throws TransportException
* @throws UserAuthException
*/
final SSHClient ssh = new SSHClient();
int pn = 22;
String ipaddress = "192.168.1.1";
String username = "pi";//root
String password = "berkfurkan";//sah
String result1 ="" ;
String result2 ="" ;
String result ="";
@Override
protected String doInBackground(String... command) {
Log.i("doInBackground","doInBackground");
//final SSHClient ssh = new SSHClient();
String command1= new String(command[0]);
// Adds a nullHostKeyVerifier
ssh.addHostKeyVerifier(new NullHostKeyVerifier());
try {
ssh.connect(ipaddress, pn);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
return "NOT connecting";
}
// Authenticate with the password entered
try {
ssh.authPassword(username, password);
} catch (UserAuthException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
return "NOT Authenticate";
}catch (TransportException e) {
// TODO: handle exception
e.printStackTrace();
return "NOT Authenticate";
}
// connect to the machine
try {
// start a new session
Session session = ssh.startSession();
Command cmd = session.exec(command1);
if (cmd.isOpen())
{System.out.println("channel oppen");
System.out.println(IOUtils.readFully(cmd.getInputStream()).toString());
System.out.println("\n** exit status: " + cmd.getExitStatus());}
System.out.println("output"+IOUtils.readFully(cmd.getInputStream()).toString());
// reads the output of the command
result = IOUtils.readFully(cmd.getInputStream()).toString();
session.close();
} catch (IOException e) {
e.printStackTrace();
return "session" ;
}
return result;
}
public void SSH() {
try {
ssh.addHostKeyVerifier(new NullHostKeyVerifier());
ssh.connect(ipaddress, pn);
ssh.authPassword(username, password);
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
@Override
protected void onPostExecute(String result) {
if(result.equalsIgnoreCase("NOT connecting")){
Log.i("res1","NOT connecting");
}
if(result.equalsIgnoreCase("NOT Authenticate")){
Log.i("res2","NOT Authenticate");
}
if(result.equalsIgnoreCase("session")){
Log.i("res3","NOT session");
}
if (result.equals(""))
Log.i(" resultat","NULL");
else
Log.i(" resultat",result);
}
}
空主机类：
包com.example.sshjdeneme;
import java.security.PublicKey;
import net.schmizz.sshj.transport.verification.HostKeyVerifier;
public class NullHostKeyVerifier implements HostKeyVerifier {
/*
* This method is used to bypass HostKeyVerification.
* It returns true for whatever the input is.
*
*/
@Override
public boolean verify(String arg0, int arg1, PublicKey arg2) {
// TODO Auto-generated method stub
return false;
}
}
我在哪里做错了？谢谢
ps：错误消息
05-22 12:22:10.575: E/AndroidRuntime(379): FATAL EXCEPTION: main
05-22 12:22:10.575: E/AndroidRuntime(379): java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
05-22 12:22:10.575: E/AndroidRuntime(379): at net.schmizz.sshj.DefaultConfig.<init>(DefaultConfig.java:97)
05-22 12:22:10.575: E/AndroidRuntime(379): at net.schmizz.sshj.SSHClient.<init>(SSHClient.java:136)
05-22 12:22:10.575: E/AndroidRuntime(379): at com.example.sshjdeneme.Connection.<init>(Connection.java:20)
05-22 12:22:10.575: E/AndroidRuntime(379): at com.example.sshjdeneme.MainActivity.onClick(MainActivity.java:31)
05-22 12:22:10.575: E/AndroidRuntime(379): at android.view.View.performClick(View.java:2485)
05-22 12:22:10.575: E/AndroidRuntime(379): at android.view.View$PerformClick.run(View.java:9080)
05-22 12:22:10.575: E/AndroidRuntime(379): at android.os.Handler.handleCallback(Handler.java:587)
05-22 12:22:10.575: E/AndroidRuntime(379): at android.os.Handler.dispatchMessage(Handler.java:92)
05-22 12:22:10.575: E/AndroidRuntime(379): at android.os.Looper.loop(Looper.java:123)
05-22 12:22:10.575: E/AndroidRuntime(379): at android.app.ActivityThread.main(ActivityThread.java:3683)
05-22 12:22:10.575: E/AndroidRuntime(379): at java.lang.reflect.Method.invokeNative(Native Method)
05-22 12:22:10.575: E/AndroidRuntime(379): at java.lang.reflect.Method.invoke(Method.java:507)
05-22 12:22:10.575: E/AndroidRuntime(379): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
05-22 12:22:10.575: E/AndroidRuntime(379): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
05-22 12:22:10.575: E/AndroidRuntime(379): at dalvik.system.NativeStart.main(Native Method)
最佳答案
根据所有在堆栈跟踪中指出的异常情况，非常确定它只是类路径中缺少的库：
造成原因：java.lang.NoClassDefFoundError：org.slf4j.LoggerFactory
sshj依赖slf4j库进行日志记录，我假设您只需要下载它并将其放在类路径中即可。
slf4j可从以下地址获得：http://www.slf4j.org/download.html
您可能希望检查sshj还需要哪些其他依赖项，并确保也安装了它们，不确定所使用的sshj版本是什么，但是可以找到最新版本的pom.xml链接，其中列出了所有下面sshj的当前依赖项：
https://github.com/hierynomus/sshj/blob/master/pom.xml
希望这可以帮助！