基于jsp+servlet+mysql网上蛋糕店-idea版

package dao; import model.Goods; import model.Recommend; import org.apache.commons.dbutils.*; import org.apache.commons.dbutils.handlers.*; import utils.DataSourceUtils; import java.sql.SQLException; import java.util.*; public class GoodsDao { //select g.id,g.name,g.cover,g.price,t.name typename from recommend r,goods g,type t where type=2 and r.goods_id=g.id and g.type_id=t.id public List<Map<String,Object>> getGoodsList(int recommendType) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql="select g.id,g.name,g.cover,g.price,t.name typename from recommend r,goods g,type t where type=? and r.goods_id=g.id and g.type_id=t.id"; return r.query(sql, new MapListHandler(),recommendType); } public List<Map<String,Object>> getScrollGood()throws SQLException{ QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); // String sql="select g.id,g.name,g.cover,g.price from recommend r,goods g where type=1 and r.goods_id=g.id"; // return r.query(sql, new MapHandler()); String sql="select g.id,g.name,g.cover,g.price from recommend r,goods g where r.goods_id=g.id"; return r.query(sql, new MapListHandler()); } public List<Goods> selectGoodsByTypeID(int typeID,int pageNumber,int pageSize) throws SQLException { if(typeID==0) { String sql="select * from goods limit ? , ?"; QueryRunner r=new QueryRunner(DataSourceUtils.getDataSource()); return r.query(sql,new BeanListHandler<Goods>(Goods.class),(pageNumber-1)*pageSize,pageSize); } else { String sql="select * from goods where type_id=? limit ? , ?"; QueryRunner r=new QueryRunner(DataSourceUtils.getDataSource()); return r.query(sql,new BeanListHandler<Goods>(Goods.class),typeID,(pageNumber-1)*pageSize,pageSize); } } public int getCountOfGoodsByTypeID(int typeID) throws SQLException { String sql=""; QueryRunner r=new QueryRunner(DataSourceUtils.getDataSource()); if(typeID==0) { sql="select count(*) from goods"; return r.query(sql,new ScalarHandler<Long>()).intValue(); } else { sql="select count(*) from goods where type_id=?"; return r.query(sql,new ScalarHandler<Long>(),typeID).intValue(); } } public List<Goods> selectGoodsbyRecommend(int type,int pageNumber,int pageSize) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); if(type==0) { //当不添加推荐类型限制的时候 String sql = " select g.id,g.name,g.cover,g.image1,g.image2,g.intro,g.price,g.stock,t.name typename from goods g,type t where g.type_id=t.id order by g.id limit ?,?"; return r.query(sql, new BeanListHandler<Goods>(Goods.class),(pageNumber-1)*pageSize,pageSize); } String sql = " select g.id,g.name,g.cover,g.image1,g.image2,g.intro,g.price,g.stock,t.name typename from goods g,recommend r,type t where g.id=r.goods_id and g.type_id=t.id and r.type=? order by g.id limit ?,?"; return r.query(sql, new BeanListHandler<Goods>(Goods.class),type,(pageNumber-1)*pageSize,pageSize); } public int getRecommendCountOfGoodsByTypeID(int type) throws SQLException { if(type==0)return getCountOfGoodsByTypeID(0); QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "select count(*) from recommend where type=?"; return r.query(sql, new ScalarHandler<Long>(),type).intValue(); } public Goods getGoodsById(int id) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "select g.id,g.name,g.cover,g.image1,g.image2,g.price,g.intro,g.stock,t.id typeid,t.name typename from goods g,type t where g.id = ? and g.type_id=t.id"; return r.query(sql, new BeanHandler<Goods>(Goods.class),id); } public int getSearchCount(String keyword) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "select count(*) from goods where name like ?"; return r.query(sql, new ScalarHandler<Long>(),"%"+keyword+"%").intValue(); } public List<Goods> selectSearchGoods(String keyword, int pageNumber, int pageSize) throws SQLException{ QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "select * from goods where name like ? limit ?,?"; return r.query(sql, new BeanListHandler<Goods>(Goods.class),"%"+keyword+"%",(pageNumber-1)*pageSize,pageSize); } public boolean isScroll(Goods g) throws SQLException { return isRecommend(g, 1); } public boolean isHot(Goods g) throws SQLException { return isRecommend(g, 2); } public boolean isNew(Goods g) throws SQLException { return isRecommend(g, 3); } private boolean isRecommend(Goods g,int type) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "select * from recommend where type=? and goods_id=?"; Recommend recommend = r.query(sql, new BeanHandler<Recommend>(Recommend.class),type,g.getId()); if(recommend==null) { return false; }else { return true; } } public void addRecommend(int id,int type) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "insert into recommend(type,goods_id) values(?,?)"; r.update(sql,type,id); } public void removeRecommend(int id,int type) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "delete from recommend where type=? and goods_id=?"; r.update(sql,type,id); } public void insert(Goods g) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "insert into goods(name,cover,image1,image2,price,intro,stock,type_id) values(?,?,?,?,?,?,?,?)"; r.update(sql,g.getName(),g.getCover(),g.getImage1(),g.getImage2(),g.getPrice(),g.getIntro(),g.getStock(),g.getType().getId()); } public void update(Goods g) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "update goods set name=?,cover=?,image1=?,image2=?,price=?,intro=?,stock=?,type_id=? where id=?"; r.update(sql,g.getName(),g.getCover(),g.getImage1(),g.getImage2(),g.getPrice(),g.getIntro(),g.getStock(),g.getType().getId(),g.getId()); } public void delete(int id) throws SQLException { QueryRunner r = new QueryRunner(DataSourceUtils.getDataSource()); String sql = "delete from goods where id = ?"; r.update(sql,id); } }