Author: halo cloud Ma Ligang

 
 
 
The following is a reference example of using MySQL connector to connect Aurora for mysql:
 
Workbench accesses Aurora in the same way as mysql, such as:
Aurora.example.rds.cn-northwest-1.amazonaws.com.cn
User name: root
Password: root

Eclipse development first adds dependency in maven, as follows:

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.15</version>
</dependency>

Source code:

package Aurora.test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class ConnectAurora {
    public static void main(String[] args) {
        // TODO Auto-generated method stub
                        //Declare Connection object
                        Connection con;
                        String driver = "com.mysql.cj.jdbc.Driver";
                        //The URL points to the database name mydata to be accessed
                        String url = "jdbc:mysql:// Aurora.example.rds.cn-northwest-1.amazonaws.com.cn:3306/db3";
                        //User name when MySQL is configured
                        String user = "root";
                        //Password for MySQL configuration
                        String password = "root";
                        //Traverse query result set
                        try {
                            //load driver
                            Class.forName(driver);
                            //1.getConnection() method, connect to MySQL database!!
                            con = DriverManager.getConnection(url,user,password);
                            if(!con.isClosed())
                                System.out.println("Succeeded connecting to the Database!");
                            //2. Create statement class object to execute SQL statement!!
                            Statement statement = con.createStatement();
                            //SQL statement to execute
                            String sql = "select * from fileindex";
                            //3.ResultSet class, used to store the obtained result set!!
                            ResultSet rs = statement.executeQuery(sql);
                            System.out.println("-----------------------------------------------------------------------------------------------");               
                            System.out.println("------------------------------------------------------------------------------------------------");  
                            System.out.println("| "+ "id" + "\t" +" | "+ "app_id"+  "\t" +" | "+  "File name"+ "\t" +" | " + "File address"+ "\t" +" | ");  
                            System.out.println("------------------------------------------------------------------------------------------------");                          
                            String APP_ID = null;
                            String id = null;
                            String address = null;
                            String school = null;
                            while(rs.next()){
                                //Get the data of stuname
                                id = rs.getString("ID");
                                //Get stuid data
                                APP_ID = rs.getString("APP_ID");
                                address= rs.getString("File_Name");
                                school=rs.getString("File_url");
                                //Output result
                                System.out.println(" | "+id + "\t" +" | "+ APP_ID +" | "+ "\t" +" | "+address +" | "+ "\t" +" | "+school +" | " );
                                System.out.println(" ------------------------------------------------------------------");  
                            }
                            rs.close();
                            con.close();
                        } catch(ClassNotFoundException e) {   
                            //Exception handling of database driver class
                            System.out.println("Sorry,can`t find the Driver!");   
                            e.printStackTrace();   
                            } catch(SQLException e) {
                            //Exception handling of database connection failure
                            e.printStackTrace();  
                            }catch (Exception e) {
                            // TODO: handle exception
                            e.printStackTrace();
                        }finally{
                           System.out.println("Database data obtained successfully!");
                        }
                    }

}

 
Workbench query:
 

 
Java query results:
 

 

  
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