teeth/code/ProductionDaoImpl.java

package com.dao;

import java.util.*;

import java.sql.*;

import com.domain.Production;

public class ProductionDaoImpl implements ProductionDao {
    
    // 添加学生方法
	    public boolean addProduction(Production s)throws SQLException{
	    	Connection conn = getConnection();
	    	String sql = "INSERT INTO Production(Pid,Price,Prom,Classify,Store) VALUES (?,?,?,?,?)"; 
	       try{
	  	     PreparedStatement pstmt = conn.prepareStatement(sql);
	  	     pstmt.setInt(1, s.getPid()); 
	  	     pstmt.setString(2, s.getPrice());
	          pstmt.setString(3, s.getProm());
	          pstmt.setString(4, s.getClassify());
	          pstmt.setString(5, s.getStore());
	          
	          pstmt.executeUpdate();
	          return true;
	       }catch(SQLException sqle){
	   	      System.out.println(sqle);
	   	      return false;
	        }        
    }
    // 检索学生方法
public List<Production> listProduction()throws SQLException{
    Connection conn = getConnection();  
	String sql = "SELECT * FROM Production"; 
  	  List<Production> list = new ArrayList<Production>(); 
  	  try{
  	  	PreparedStatement pstmt = conn.prepareStatement(sql);
  	     ResultSet rs = pstmt.executeQuery();
  	     while(rs.next()){
  	    	 int Pid = rs.getInt("Pid");
  	       String Price = rs.getString(2);
  	       String Prom = rs.getString(3);
  	       String Classify = rs.getString(4);
  	     String Store = rs.getString(5);
  	Production s = new Production();
  	       s.setPid(Pid);
  	       s.setPrice(Price);
  	       s.setProm(Prom);
  	      s.setClassify(Classify);
  	      s.setStore(Store);
  	       list.add(s);
  	     }
  	     return list;
  	  }catch(SQLException sqle){
  	   	System.out.println(sqle);
  	   	return null;
  	  }        
    }
    // 删除产品
    public int removeProduction(int id)throws SQLException{
        Connection conn = getConnection();
    	String sql = "DELETE FROM Production WHERE pid=?";  
      	try{
      	 	PreparedStatement pstmt = conn.prepareStatement(sql);
      	    pstmt.setInt(1, id);
      	    return pstmt.executeUpdate();
      	}catch(SQLException sqle){
      	   	System.out.println(sqle);
      	 	return 0;
      	} 
    }
	
	
}