Question

当我尝试使用java / android

连接到mysql时出错

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.

错误：无法创建与数据库服务器的连接。

10-28 18:25:05.621: D/AbsListView(20635): Get MotionRecognitionManager
10-28 18:25:05.626: E/MYSQL(20635): Erro: Could not create connection to database server.
10-28 18:25:05.626: E/MYSQL(20635): Erro: java.lang.NullPointerException
10-28 18:25:05.626: W/System.err(20635): Got an exception! 
10-28 18:25:05.626: W/System.err(20635): Could not create connection to database server.
10-28 18:25:05.636: E/MYSQL(20635): Erro: java.lang.NullPointerException

主要

    //Conectar no Banco
    conn = new ConnectMysql();
    try {
        conn.getConexato();

    } catch (Exception e) {
          Log.e("MYSQL", "Erro: " + e.getMessage());
    }

}

ConnectMysql：

 public Connection getConexato() throws ClassNotFoundException,  
    SQLException, java.sql.SQLException, InstantiationException,  
    IllegalAccessException {  

    Class.forName("com.mysql.jdbc.Driver").newInstance();  

    conn = (Connection)     DriverManager.getConnection("jdbc:mysql://mysql.hostinger.com.br:3306/u917553846_123","u917553846_admin","teste123");  

    return conn;  
}

Answer 1

请检查Android应用是否具有访问互联网服务的正确权限。

<manifest xlmns:android...>
 ...
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>

Answer 2

mysql.hostinger.com.br是不存在的域名。你确定db的地址吗？

无法连接到JAVA中的Mysql

2 个答案: