Delete 'productDaolmptyj.java'

productDaolmptyj.java

@@ -1,204 +0,0 @@
-package com.tyj.dao.mysql;
-
-import java.sql.Connection;
-import java.sql.PreparedStatement;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.List;
-
-import com.tyj.dao.ProductDao;
-import com.tyj.domain.Product;
-
-public class productDaolmptyj implements ProductDao {
-
-	@Override
-	public List<Product> findAll() {
-		String  sql= "select productid,category,cname,ename,images,listprice,unitcost,descn from product";
-		
-		List<Product> list =  new ArrayList<Product>();
-		
-		try (Connection  conn =  DBHelper.getConnection();
-				//创建语句对象
-				PreparedStatement pstmt = conn.prepareStatement(sql);
-				//绑定参数
-				//执行查询
-				ResultSet rs  = pstmt.executeQuery()){
-			
-			//遍历结果集
-			while (rs.next()) {
-				
-				Product P = new Product();
-				
-				P.setProductid(rs.getString("productid"));
-				P.setCategory(rs.getString("category"));
-				P.setCname(rs.getString("cname"));
-				P.setEname(rs.getString("ename"));
-				P.setImage(rs.getString("images"));
-				P.setListprice(rs.getString("listprice"));
-				P.setUnitcost(rs.getString("unitcost"));
-				P.setDescn(rs.getString("descn"));
-				
-				list.add(P);
-			}
-		}catch (SQLException e) {
-			e.printStackTrace();
-		}
-				
-		
-		// TODO Auto-generated method stub
-		return list;
-	}
-
-	@Override
-	public Product findById(String id) {
-		
-		Connection conn = null;
-		PreparedStatement pstmt = null;
-		ResultSet rs = null;
-		
-		
-		String  sql= "select productid,category,cname,ename,images,listprice,unitcost,descn from product where productid = ?";
-		try {
-			// 2.创建数据库链接
-			 conn = DBHelper.getConnection();//加载驱动程序
-			
-			// 创建语句对象
-			pstmt = conn.prepareStatement(sql);
-			// 绑定参数
-			pstmt.setString(1, id);
-			// 执行查询
-			rs = pstmt.executeQuery();
-			// 遍历结果
-			while (rs.next()) {
-
-Product p = new Product();
-				
-				p.setProductid(rs.getString("productid"));
-				p.setCategory(rs.getString("category"));
-				p.setCname(rs.getString("cname"));
-				p.setEname(rs.getString("ename"));
-				p.setImage(rs.getString("images"));
-				p.setListprice(rs.getString("listprice"));
-				p.setUnitcost(rs.getString("unitcost"));
-				p.setDescn(rs.getString("descn"));
-				
-				return p;
-			}
-
-		} catch (SQLException e) {
-			e.printStackTrace();
-		} finally {
-			if (rs != null) {
-				try {
-					rs.close();
-				} catch (SQLException e) {
-					e.printStackTrace();
-				}
-			}
-			if (pstmt != null) {
-				try {
-					pstmt.close();
-				} catch (SQLException e) {
-					e.printStackTrace();
-				}
-			}
-			if (conn != null) {
-				try {
-					conn.close();
-				} catch (SQLException e) {
-					e.printStackTrace();
-				}
-			}
-		}
-		return null;
-		
-	}
-	public List<Product> findByCategory(String category) {
-		
-		Connection conn = null;
-		PreparedStatement pstmt = null;
-		ResultSet rs = null;
-		
-		List<Product> list =  new ArrayList<Product>();
-		String  sql= "select productid,category,cname,ename,images,listprice,unitcost,descn from product where category = ?";
-		try {
-			// 2.创建数据库链接
-			 conn = DBHelper.getConnection();//加载驱动程序
-			
-			// 创建语句对象
-			pstmt = conn.prepareStatement(sql);
-			// 绑定参数
-			pstmt.setString(1, category);
-			// 执行查询
-			rs = pstmt.executeQuery();
-			// 遍历结果
-			while (rs.next()) {
-
-Product P = new Product();
-				
-				P.setProductid(rs.getString("productid"));
-				P.setCategory(rs.getString("category"));
-				P.setCname(rs.getString("cname"));
-				P.setEname(rs.getString("ename"));
-				P.setImage(rs.getString("images"));
-				P.setListprice(rs.getString("listprice"));
-				P.setUnitcost(rs.getString("unitcost"));
-				P.setDescn(rs.getString("descn"));
-			}
-
-		} catch (SQLException e) {
-			e.printStackTrace();
-		} finally {
-			if (rs != null) {
-				try {
-					rs.close();
-				} catch (SQLException e) {
-					e.printStackTrace();
-				}
-			}
-			if (pstmt != null) {
-				try {
-					pstmt.close();
-				} catch (SQLException e) {
-					e.printStackTrace();
-				}
-			}
-			if (conn != null) {
-				try {
-					conn.close();
-				} catch (SQLException e) {
-					e.printStackTrace();
-				}
-			}
-		}
-		return list;
-		
-	}
-	@Override
-	public int create(Product product) {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public int modify(Product product) {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public int remove(Product product) {
-		// TODO Auto-generated method stub
-		return 0;
-	}
-
-	@Override
-	public List<Product> findCategory(String category) {
-		// TODO 自动生成的方法存根
-		return null;
-	}
-
-
-
-}