9.27每日总结

package com;
 
import dao.Sub;
 
import java.sql.PreparedStatement;
import java.sql.SQLException;
 
public class DBC {
 
    public void CreateTable(){
 
 
        Sub sub =new Sub();
        PreparedStatement preparedStatement=null;
        try {
            DB db = new DB();
            String sql ="CREATE TABLE IF NOT EXISTS `linktable`(" +
                        "`Id` INT UNSIGNED AUTO_INCREMENT ," +
                        "`Alink` VARCHAR(255) NOT NULL ," +
                        "`Blink` VARCHAR(255) NOT NULL ," +
                        "`Clink` VARCHAR(255) NOT NULL ," +
                        "`Tname` VARCHAR(255) NOT NULL ," +
                        "PRIMARY KEY(`Id`)" +
                        ")ENGINE=INNODB DEFAULT CHARSET=utf8";
            preparedStatement=db.conn.prepareStatement(sql);
            preparedStatement.executeUpdate();
            db.close();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally{
        }
        try {
            DB db = new DB();
            String b = "linktable";
            String sqc = "SELECT * FROM " + b ;
            preparedStatement=db.conn.prepareStatement(sqc);
            preparedStatement.executeQuery();
            while (db.rs.next()){
                String equ = String.valueOf(db.rs.next());
 
                for (int i = 0; i < 1; i++) {
 
                }
            }
            db.close();
        }catch (SQLException e){
            e.printStackTrace();
        }finally {
 
        }
 
    }
    public void InsertFull(String table_name,String Id,String Alink,String Blink,String Clink,String Tname){
        DB db = new DB();
        PreparedStatement preparedStatement=null;
        try {
            String sql = "INSERT INTO "+ table_name + " (Id,Alink,Blink,Clink,Tname) values (?,?,?,?,?)";
            preparedStatement=db.conn.prepareStatement(sql);
            preparedStatement.setString(1,Id);
            preparedStatement.setString(2,Alink);
            preparedStatement.setString(3,Blink);
            preparedStatement.setString(4,Clink);
            preparedStatement.setString(5,Tname);
            preparedStatement.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally{
        }
 
    }
 
 
}