段对第一阶段冲刺3总结

2022-06-14 09:31:06 阅读：108 来源： 互联网

标签：总结 return String food 冲刺 public sql foodname 第一阶段

今天冲刺任务就是完成dao层的编写

package com.supercook.dao;

import com.supercook.dButils.JdbcUtils;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.commons.dbutils.handlers.ScalarHandler;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;

public class BaseDao {

    //使用dButils操作数据库
    private QueryRunner queryRunner = new QueryRunner();

    /**
     * update()用来执行：Insert\Update\Delete语句
     *
     * @return 如果返回-1，说明执行失败<br/>返回其他表所示影响的行数
     */
    public int update(String sql,Object... args){
        Connection connection = JdbcUtils.getConnection();
        try {
            return queryRunner.update(connection, sql,args);
        } catch (SQLException e) {
            e.printStackTrace();
        }finally {
            JdbcUtils.close(connection);
        }
        return -1;
    }

    /**
     * 查询返回一个JavaBean的sql语句
     *
     * @param type 返回对象的类型
     * @param sql 执行的sql语句
     * @param args sql对应的参数值
     * @param <T> 返回的类型的泛型
     * @return
     */
    public <T> T queryForOne(Class<T> type,String sql,Object... args){
        Connection con = JdbcUtils.getConnection();

        try {
            return queryRunner.query(con,sql,new BeanHandler<T>(type),args);
        } catch (SQLException e) {
            e.printStackTrace();
        }finally {
            JdbcUtils.close(con);
        }
        return null;
    }

    /**
     * 查询返回多个JavaBean的sql语句
     *
     * @param type 返回对象的类型
     * @param sql 执行的sql语句
     * @param args sql对应的参数值
     * @param <T> 返回的类型的泛型
     * @return
     */
    public <T> List<T> queryForList(Class<T> type, String sql, Object... args){
        Connection con = JdbcUtils.getConnection();
        System.out.println(con);
        try {
            return queryRunner.query(con,sql,new BeanListHandler<T>(type),args);
        } catch (SQLException e) {
            e.printStackTrace();
        }finally {
            JdbcUtils.close(con);
        }
        return null;
    }

    /**
     * 执行返回一行一列的sql语句
     * @param sql   执行的sql语句
     * @param args sql对应的参数值
     * @return
     */
    public Object queryForSingleValue(String sql,Object... args){

        Connection conn = JdbcUtils.getConnection();

        try {
            return queryRunner.query(conn,sql,new ScalarHandler(),args);
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            JdbcUtils.close(conn);
        }
        return null;
    }
}

package com.supercook.dao;

import com.supercook.bean.Food;

import com.supercook.bean.Food2;

import com.supercook.bean.Windows;



import java.util.List;





public interface FoodDao {

    /**

     * 根据food名查询food信息

     *

     * @param foodname food名

     * @return 如果返回null, 说明没有这个food。反之亦然

     */

    public List<Food> queryxiaochi(String foodname);



    /**

     * 根据food名查询food信息

     * @param foodname food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food> querynoodle(String foodname);



    /**

     * 根据food名查询food信息

     * @param foodname food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food> queryrice(String foodname);



    /**

     * 根据food名查询food信息

     * @param foodname food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food> querypastry(String foodname);



    /**

     * 根据food名查询food信息

     * @param foodname food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food> querydish(String foodname);



    /**

     * 根据food名查询food信息

     * @param foodname food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food> querysimplesnack(String foodname);



    /**

     * 根据food名查询food信息

     * @param foodname food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food> querydrink(String foodname);



    /**

     * 根据food名查询food信息

     * @param foodname food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food> querysoup(String foodname);



    /**

     * 根据kind名查询food信息

     * @param kind food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food> querykind(String kind);



    /**

     * 根据foodname名查询food信息

     * @param foodname food名

     * @return 如果返回null,说明没有这个food。反之亦然

     */

    public List<Food2> search(String foodname);



    public int dianzan(String name);



    public int dianzan1(String name);



    public Windows querysrc(String name);

}

package com.supercook.dao;



public interface UserDao {



    public int adduser(String username,String password,String number,String email,String sex,String age,String weight);



    public int login(String name,String paw);



}

package com.supercook.dao;



import com.supercook.bean.Food;

import com.supercook.bean.Food2;

import com.supercook.bean.Windows;

import com.supercook.dButils.JdbcUtils;



import java.sql.Connection;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import java.util.ArrayList;

import java.util.List;



public class FoodDaoImpl extends BaseDao implements FoodDao {



    @Override

    public List<Food> queryxiaochi(String foodname) {

        String sql = "select * from food join windows on food.position=windows.WPosition where foodname = ? and kind = '小吃'";

        return queryForList(Food.class,sql,foodname);

    }



    @Override

    public List<Food> querynoodle(String foodname) {

        String sql = "select * from food where foodname = ? and kind = '面食'";

        return  queryForList(Food.class,sql,foodname);

    }



    @Override

    public List<Food> queryrice(String foodname) {

        String sql = "select * from food join windows on food.position=windows.WPosition where foodname = ? and kind = '米饭'";

        return queryForList(Food.class,sql,foodname);

    }



    @Override

    public List<Food> querypastry(String foodname) {

        String sql = "select * from food where foodname = ? and kind = '面点'";

        return queryForList(Food.class,sql,foodname);

    }



    @Override

    public List<Food> querydish(String foodname) {

        String sql = "select * from food where foodname = ? and kind = '面食配菜'";

        return queryForList(Food.class,sql,foodname);

    }



    @Override

    public List<Food> querysimplesnack(String foodname) {

        String sql = "select * from food where foodname = ? and kind = '中式简餐'";

        return queryForList(Food.class,sql,foodname);

    }



    @Override

    public List<Food> querydrink(String foodname) {

        String sql = "select * from food where foodname = ? and kind = '饮品'";

        return queryForList(Food.class,sql,foodname);

    }



    @Override

    public List<Food> querysoup(String foodname) {

        String sql = "select * from food where foodname = ? and kind = '汤'";

        return queryForList(Food.class,sql,foodname);

    }



    @Override

    public List<Food> querykind(String kind) {

        String sql = "select * from food where kind = ?";

        return queryForList(Food.class,sql,kind);

    }



    @Override

    public List<Food2> search(String name) {

        String sql = "select * from food join windows on food.position=windows.WPosition where foodname like '%"+name+"%' or WName like '%"+name+"%'";

        Connection connection = JdbcUtils.getConnection();

        Statement statement = null;

        ResultSet rs = null;

        List<Food2> list = new ArrayList<>();



        try {

            statement = connection.createStatement();

            rs = statement.executeQuery(sql);

            Food2 kc=null;

            while(rs.next())

            {

                int WId=rs.getInt("WId");

                String WPosition=rs.getString("WPosition");

                String WName=rs.getString("WName");

                int id=rs.getInt("id");

                String foodname=rs.getString("foodname");

                double price=rs.getDouble("price");

                String kind=rs.getString("kind");

                //String img=rs.getString("img");

                int score=rs.getInt("score");

                kc =new Food2(WId,WPosition,price,WName,id,kind,foodname,score);

                System.out.println(kc);

                list.add(kc);

            }

        } catch (SQLException e) {

            e.printStackTrace();

        }finally {

            JdbcUtils.close(connection);

        }

        return list;

    }



    @Override

    public int dianzan(String name) {

        String sql = "update windows set score=score+1 where WName='"+name+"'";

        Connection connection = JdbcUtils.getConnection();

        Statement statement = null;

        ResultSet resultSet = null;

        int flag = 0;



        try {

            statement = connection.createStatement();

            int i = statement.executeUpdate(sql);

            if(i>0){

                System.out.println("点赞成功");

            }else {

                System.out.println("点赞失败");

            }

        } catch (SQLException e) {

            throw new RuntimeException(e);

        }finally {

            JdbcUtils.close(connection);

        }

        return flag;

    }



    @Override

    public int dianzan1(String name) {

        String sql = "update windows set score=score+1 where WPosition='"+name+"'";

        Connection connection = JdbcUtils.getConnection();

        Statement statement = null;

        ResultSet resultSet = null;

        int flag = 0;



        try {

            statement = connection.createStatement();

            int i = statement.executeUpdate(sql);

            if(i>0){

                System.out.println("点赞成功");

            }else {

                System.out.println("点赞失败");

            }

        } catch (SQLException e) {

            throw new RuntimeException(e);

        }finally {

            JdbcUtils.close(connection);

        }

        return flag;

    }



    @Override

    public Windows querysrc(String name) {

        String sql = "select * from windows where WPosition = ?";

        return queryForOne(Windows.class,sql,name);

    }

}

package com.supercook.dao;



import com.supercook.bean.User;



import java.util.List;



public class UserDaoImpl extends BaseDao implements UserDao{

    @Override

    public int adduser(String username, String password, String number, String email, String sex, String age, String weight) {

        String sql = "insert into user(username,password,number,email,sex,age,weight)values('"+username+"','"+password+"','"+number+"','"+email+"','"+sex+"','"+age+"','"+weight+"')";

        return update(sql,username,password,number,email,sex,age,weight);

    }



    @Override

    public int login(String name, String paw) {

        int flag = 0;

        String sql = "select * from user";

        List<User> users = queryForList(User.class, sql);

        for(int i = 0;i < users.size();i++){

            if(users.get(i).getUsername().equals(name)&&users.get(i).getPassword().equals(paw)){

                flag = 1;

            }

        }

        if(flag == 1){

            System.out.println("登陆成功");

        }else {

            System.out.println("登陆失败");

        }

        return flag;

    }

}

标签：总结,return,String,food,冲刺,public,sql,foodname,第一阶段
来源： https://www.cnblogs.com/20203923rensaihang/p/16373348.html

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段对第一阶段冲刺3总结