搜索引擎

开发平台：
Java

Product.java：源码内容
							package com.lucene;
import java.util.ArrayList;
import java.util.Date;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
/*
 * @CopyRigth(R) 城市通
 * @author 申华锋 E-mail:leonshine@qq.com
 * @version 创建时间：Mar 9, 2008 12:12:45 AM
 * @description 
 */
public class Product {
	private long productId;
	private String title;
	private String description;
	private String address;
	private String userName;
	private long userId;
	private String tag;
	private Date date;
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	public String getDescription() {
		return description;
	}
	public void setDescription(String description) {
		this.description = description;
	}
	public long getProductId() {
		return productId;
	}
	public void setProductId(long productId) {
		this.productId = productId;
	}
	public String getTag() {
		return tag;
	}
	public void setTag(String tag) {
		this.tag = tag;
	}
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public long getUserId() {
		return userId;
	}
	public void setUserId(long userId) {
		this.userId = userId;
	}
	public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String ToString(){
		
		return "这是个照片的实体";
	}
	public Date getDate() {
		return date;
	}
	public void setDate(Date date) {
		this.date = date;
	}
	
	//查询数据库，返回Product对象数组
	public static Product[] loadProducts() throws Exception {
		ArrayList<Product> list = new ArrayList<Product>();
		PreparedStatement pstm = null;
		ResultSet rs = null;
		String sql = "select product_id,title,address,descr,user_id,user_name,upload_time,tag_name from product";
		try {
			pstm = DBConnection.getConnection().prepareStatement(sql);
			rs = pstm.executeQuery();
			while (rs.next()) {
				Product photo = new Product();
				photo.setProductId(rs.getLong(1));
				photo.setTitle(rs.getString(2));
				photo.setAddress(rs.getString(3));
				photo.setDescription(rs.getString(4));
				photo.setUserId(rs.getLong(5));
				photo.setUserName(rs.getString(6));
				photo.setDate(rs.getTimestamp(7));
				photo.setTag(rs.getString(8));
				list.add(photo);
			}
		} catch (SQLException e) {
			e.printStackTrace();
		} finally {
			if (rs != null) {
				rs.close();
			}
			if (pstm != null) {
				pstm.close();
			}
		}
		return (Product[]) list.toArray(new Product[list.size()]);
	}
	
	//根据传入id获取一个Product
	public static Product queryProductbyId(long id)throws Exception{
		Product photo = new Product();
		PreparedStatement pstm = null;
		ResultSet rs = null;
		String sql = "select product_id,title,address,descr,user_id,user_name,upload_time,tag_name from product where product_id ='"+id+"'";
		try {
			pstm = DBConnection.getConnection().prepareStatement(sql);
			rs = pstm.executeQuery();
			while (rs.next()) {
				
				photo.setProductId(rs.getLong("product_id"));
				photo.setTitle(rs.getString("title"));
				photo.setAddress(rs.getString("address"));
				photo.setDescription(rs.getString("descr"));
				photo.setUserId(rs.getLong("user_id"));
				photo.setUserName(rs.getString("user_name"));
				photo.setDate(rs.getTimestamp("upload_time"));
				photo.setTag(rs.getString("tag_name"));
			}
		} catch (SQLException e) {
			e.printStackTrace();
		} finally {
			if (rs != null) {
				rs.close();
			}
			if (pstm != null) {
				pstm.close();
			}
		}
		return photo;
	} 
}

						