Java连接MySQL数据库实现增删改查操作！

package dbConnPackage;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class ConnToMySql {

    /**
     * @param args
     */
    public static void main(String[] args) {

        // TODO Auto-generated method stub
        try {
            Class.forName("com.mysql.jdbc.Driver");
            //System.out.println("Loading mySql-connector-java.jar successed!");
        } catch (ClassNotFoundException e1) {
            //System.out.println("Cann't find mySql-connector-java.jar!");
            e1.printStackTrace();
        }

        String url = "jdbc:mysql://localhost:3306/student";
        Connection conn;
        
        try {
            conn = DriverManager.getConnection(url, "root", "3312");
            Statement stmt = conn.createStatement();
            //System.out.println("mySqlDB Connected!");
            
            String updateSql = "update studentInfo set Telephone = ? , StuName = ? where StuID = ?";
            PreparedStatement pst = conn.prepareStatement(updateSql);
            pst.setString(1, "133556565");
            pst.setString(2, "Alice");
            pst.setString(3, "20120002");
            pst.executeUpdate();

            String delSql = "delete from studentInfo where StuID = ?";
            pst = conn.prepareStatement(delSql);
            pst.setString(1, "20120001");
            pst.executeUpdate();
            
            String insertSql = "insert into studentInfo values(?, ?, ?)";
            pst = conn.prepareStatement(insertSql);
            pst.setString(1, "20120004");
            pst.setString(2,"Bob");
            pst.setString(3,"189111");
            pst.executeUpdate();
            
            String selectSql = "select * from studentInfo";
            ResultSet rs = stmt.executeQuery(selectSql);
            System.out.println("StuID\t" + "StuName\t" + "Telephone");
            while (rs.next()) {
                System.out.print(rs.getString(1) + "\t");
                System.out.print(rs.getString(2) + "\t");
                System.out.println(rs.getString(3));
            }

            rs.close();
            stmt.close();
            conn.close();
            
        } catch (SQLException e) {
            e.printStackTrace();
        }

    }
    
}

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