“Comment utiliser le fichier SQL dans Java” Réponses codées

Comment utiliser le fichier SQL dans Java

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import org.apache.ibatis.jdbc.ScriptRunner;
public class RunningScripts {
   public static void main(String args[]) throws Exception {
      //Registering the Driver
      DriverManager.registerDriver(new com.mysql.jdbc.Driver());
      //Getting the connection
      String mysqlUrl = "jdbc:mysql://localhost/talakai_noppi";
      Connection con = DriverManager.getConnection(mysqlUrl, "root", "password");
      System.out.println("Connection established......");
      //Initialize the script runner
      ScriptRunner sr = new ScriptRunner(con);
      //Creating a reader object
      Reader reader = new BufferedReader(new FileReader("E:\\sampleScript.sql"));
      //Running the script
      sr.runScript(reader);
   }
}
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Comment utiliser le fichier SQL dans Java

import java.io.BufferedReader;
 
import java.io.File;
import java.io.FileReader;
 
import java.sql.SQLException;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.Statement;
 
public class Database  {
 
    private static final String DRIVER_NAME = "com.mysql.jdbc.Driver";
 
    static
    {
        try
        {
            Class.forName(DRIVER_NAME).newInstance();
            System.out.println("*** Driver loaded");
        }
        catch(Exception e)
        {
            System.out.println("*** Error : "+e.toString());
            System.out.println("*** ");
            System.out.println("*** Error : ");
            e.printStackTrace();
        }
 
    }
 
    private static final String URL = "jdbc:mysql://localhost/mydatabase";
    private static final String USER = "root";
    private static final String PASSWORD = "password";
    private static String INSTRUCTIONS = new String();
 
    public static Connection getConnection() throws SQLException
    {
        return DriverManager.getConnection(URL, USER, PASSWORD);
    }
 
    public static void resetDatabase() throws SQLException
    {
        String s            = new String();
        StringBuffer sb = new StringBuffer();
 
        try
        {
            FileReader fr = new FileReader(new File("mySQLFile.sql"));
            // be sure to not have line starting with "--" or "/*" or any other non aplhabetical character
 
            BufferedReader br = new BufferedReader(fr);
 
            while((s = br.readLine()) != null)
            {
                sb.append(s);
            }
            br.close();
 
            // here is our splitter ! We use ";" as a delimiter for each request
            // then we are sure to have well formed statements
            String[] inst = sb.toString().split(";");
 
            Connection c = Database.getConnection();
            Statement st = c.createStatement();
 
            for(int i = 0; i<inst.length; i++)
            {
                // we ensure that there is no spaces before or after the request string
                // in order to not execute empty statements
                if(!inst[i].trim().equals(""))
                {
                    st.executeUpdate(inst[i]);
                    System.out.println(">>"+inst[i]);
                }
            }
   
        }
        catch(Exception e)
        {
            System.out.println("*** Error : "+e.toString());
            System.out.println("*** ");
            System.out.println("*** Error : ");
            e.printStackTrace();
            System.out.println("################################################");
            System.out.println(sb.toString());
        }
 
    }
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