从eclipse到远程mysql服务器的Java ssh2连接
已经为此困扰了相当一段时间,请参考此处的代码: 正在尝试,但仍无法连接。这是我修改过的代码:从eclipse到远程mysql服务器的Java ssh2连接,java,mysql,eclipse,Java,Mysql,Eclipse,已经为此困扰了相当一段时间,请参考此处的代码: 正在尝试,但仍无法连接。这是我修改过的代码: import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import com.jcraft.jsch.JSch; import com.jcraft.jsch.Sess
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import java.sql.Connection;
public class MySqlConnOverSSH {
/**
* Java Program to connect to remote database through SSH using port forwarding
* @throws SQLException
*/
public static void main(String[] args) throws SQLException {
int lport=5656;
String rhost="fictitious@germany.com";
String host="fictitious@germany.com";
int rport=3306;
String user="root";
String password="root";
String dbuserName = "root";
String dbpassword = "root";
String url = "jdbc:mysql://localhost:"+lport+"/test";
String driverName="com.mysql.jdbc.Driver";
Connection conn = null;
Session session= null;
try{
//Set StrictHostKeyChecking property to no to avoid UnknownHostKey issue
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
session=jsch.getSession(user, host, 22);
session.setPassword(password);
session.setConfig(config);
session.connect();
System.out.println("Connected");
int assigned_port=session.setPortForwardingL(lport, rhost, rport);
System.out.println("localhost:"+assigned_port+" -> "+rhost+":"+rport);
System.out.println("Port Forwarded");
//mysql database connectivity
Class.forName(driverName).newInstance();
conn = DriverManager.getConnection (url, dbuserName, dbpassword);
System.out.println ("Database connection established");
System.out.println("DONE");
}catch(Exception e){
e.printStackTrace();
}finally{
if(conn != null && !conn.isClosed()){
System.out.println("Closing Database Connection");
conn.close();
}
if(session !=null && session.isConnected()){
System.out.println("Closing SSH Connection");
session.disconnect();
}
}
}
下面是我得到的错误:
Connected
localhost:5656 -> fictitious@germany.com:3306
Port Forwarded
java.sql.SQLInvalidAuthorizationSpecException: Could not connect: Access denied for user 'root'@'fictitious@germany.com' (using password: YES)
at org.mariadb.jdbc.internal.util.ExceptionMapper.get(ExceptionMapper.java:121)Closing SSH Connection
at org.mariadb.jdbc.internal.util.ExceptionMapper.throwException(ExceptionMapper.java:69)
at org.mariadb.jdbc.Driver.connect(Driver.java:110)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at myDB.MySqlConnOverSSH.main(MySqlConnOverSSH.java:50)
Caused by: org.mariadb.jdbc.internal.util.dao.QueryException: Could not connect: Access denied for user 'root'@'fictitious@germany.com' (using password: YES)
at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.authentication(AbstractConnectProtocol.java:433)
at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.handleConnectionPhases(AbstractConnectProtocol.java:397)
at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connect(AbstractConnectProtocol.java:318)
at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connectWithoutProxy(AbstractConnectProtocol.java:630)
at org.mariadb.jdbc.internal.util.Utils.retrieveProxy(Utils.java:580)
at org.mariadb.jdbc.Driver.connect(Driver.java:105)
... 3 more}
我是Java初学者,正在尝试探索不同的方法来实现这种连接。顺便说一下,我可以使用SecureCRT上给定的用户名和密码连接到数据库,因此授权错误有点令人困惑。如果有人能指导我做错了什么,以及如何纠正,那就太好了。提前谢谢你 我认为您没有从
“root”访问数据库的权限fictitious@germany.com“
Atmish-E-Azam你好,一开始我也这么想。但正如我提到的,我可以使用相同的登录数据通过SecureCRT(SecureCRT是一个坚如磐石的终端仿真器和用于Windows、Mac和Linux的telnet/SSH客户端)进行访问。它需要Java的特别许可吗?为什么同时使用ssh和mysql连接??我想你可以直接从java类连接db。这是一个远程服务器,我想学习java中的SSH连接。