旅游推荐平台|酒店推荐平台|基于协同过滤算法实现旅游酒店推荐系统

/**
	 * 
	 * @param usersize 用户数量
	 * @param userdata 用户记录
	 * @param recommendUser 推荐的用户
	 * @return
	 */
	public static String xietongjob(int usersize,String[] userdata,String recommendUser){
		/**
		 * 输入用户-->物品条目  一个用户对应多个物品
		 * 用户ID	物品ID集合
		 *   A		a b d
		 *   B		a c
		 *   C		b e
		 *   D		c d e
		 */
		
		int N = usersize;//用户数量
		int[][] sparseMatrix = new int[N][N];//建立用户稀疏矩阵，用于用户相似度计算【相似度矩阵】
		Map userItemLength = new HashMap();//存储每一个用户对应的不同物品总数  eg: A 3
		Map> itemUserCollection = new HashMap();//建立物品到用户的倒排表 eg: a A B
		Set items = new HashSet();//辅助存储物品集合
		Map userID = new HashMap();//辅助存储每一个用户的用户ID映射
		Map idUser = new HashMap();//辅助存储每一个ID对应的用户映射
		System.out.println("Input user--items maping infermation:");
		
		
		
		
		
		for(int i = 0; i ());//创建物品--用户倒排关系
					itemUserCollection.get(user_item[j]).add(user_item[0]);
				}
			}
		}
		System.out.println(itemUserCollection.toString());
		//计算相似度矩阵【稀疏】
		Set>> entrySet = itemUserCollection.entrySet();
		Iterator>> iterator = entrySet.iterator();
		while(iterator.hasNext()){
			Set commonUsers = iterator.next().getValue();
			for (String user_u : commonUsers) {
				for (String user_v : commonUsers) {
					if(user_u.equals(user_v)){
						continue;
					}
					sparseMatrix[userID.get(user_u)][userID.get(user_v)] += 1;//计算用户u与用户v都有正反馈的物品总数
				}
			}
		}
		System.out.println(userItemLength.toString());
		System.out.println("==============Input the user for recommendation:");
		System.out.println("==userID=="+userID);
		System.out.println("========userID.get(recommendUser)=========="+userID.get(recommendUser));
		System.out.println("items==================="+items);
		//计算用户之间的相似度【余弦相似性】
		int recommendUserId = userID.get(recommendUser);
		for (int j = 0;j  users = itemUserCollection.get(item);//得到购买当前物品的所有用户集合
			if(users.contains(recommendUser)){//如果被推荐用户没有购买当前物品，则进行推荐度计算
				double itemRecommendDegree = 0.0;
				for(String user: users){
					itemRecommendDegree += sparseMatrix[userID.get(recommendUser)][userID.get(user)]/Math.sqrt(userItemLength.get(recommendUser)*userItemLength.get(user));//推荐度计算
				}
				out+=","+item;
				System.out.println("The item "+item+" for "+recommendUser +"'s recommended degree:"+itemRecommendDegree);
			}
		}
		
		return out;
		
	}

/**
	 * 专门有个算法包
	 * 然后算法的逻辑也在这里，
	 * 而且把算法之外额逻辑也加了
	 * 注！为了应对一开始人员访问数据量不够推荐算法使用的情况，就进行了数据补足，这个业务逻辑就非常完美了。
	 * 
	 * java推荐算法
	 * @param request
	 */
	public void tuijiansuanfa(HttpServletRequest request){
			Itemset originalItem = new Itemset();
			List

package com.lvyou.controller.admin;

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.lvyou.controller.MyController;

@Controller("adminCustomerController")
@RequestMapping(value = "/admin/customer")
public class AdminCustomerController extends MyController {
	

	@RequestMapping(value = "/frame")
	public String frame(Model model, HttpServletRequest request)throws Exception {
		return "/admin/customer/frame";
	}
	
	@RequestMapping(value = "/list")
	public String list(Model model, HttpServletRequest request,String username,String customerName)throws Exception {
		String sql="select a.* from t_customer a where 1=1";


	if(username!=null&&!"".equals(username)){
			sql+=" and username like '%"+username+"%'";
		}
	if(customerName!=null&&!"".equals(customerName)){
			sql+=" and customerName like '%"+customerName+"%'";
		}
		sql+=" order by id desc";
		List list = db.queryForList(sql);
		request.setAttribute("list", list);
		return "/admin/customer/list";
	}
	
	@RequestMapping(value = "/editSave")
	public ResponseEntity editSave(Model model,HttpServletRequest request,Long id
		,String username,String password,String customerName,String sex,String address,String phone,Integer account,Integer jf,String status) throws Exception{
		int result = 0;
		if(id!=null){
			String sql="update t_customer set username=?,password=?,customerName=?,sex=?,address=?,phone=?,account=?,jf=?,status=? where id=?";
			result = db.update(sql, new Object[]{username,password,customerName,sex,address,phone,account,jf,status,id});
		}else{
			String sql="insert into t_customer(username,password,customerName,sex,address,phone,account,jf,status) values(?,?,?,?,?,?,?,?,?)";
			result = db.update(sql, new Object[]{username,password,customerName,sex,address,phone,account,jf,status});
		}
		if(result==1){
			return renderData(true,"操作成功",null);
		}else{
			return renderData(false,"操作失败",null);
		}
	}
	
	@RequestMapping(value = "/editDelete")
	public ResponseEntity editDelete(Model model,HttpServletRequest request,Long id) throws Exception {
		
		String sql="delete from t_customer where id=?";
		int result = db.update(sql, new Object[]{id});
		if(result==1){
			return renderData(true,"操作成功",null);
		}else{
			return renderData(false,"操作失败",null);
		}
		
	}
	@RequestMapping(value = "/updateColumnsex")
	public ResponseEntity updateColumnsex(Model model,HttpServletRequest request,Long id,String sex) throws Exception {
		
		String sql="update t_customer set sex=?   where id=?";
		int result = db.update(sql, new Object[]{sex,id});
		if(result==1){
			return renderData(true,"操作成功",null);
		}else{
			return renderData(false,"操作失败",null);
		}
		
	}
	
	@RequestMapping(value = "/edit")
	public String edit(Model model, HttpServletRequest request,Long id)throws Exception {
		if(id!=null){
			//修改
			String sql="select * from t_customer where id=?";
			Map map = db.queryForMap(sql,new Object[]{id});
			model.addAttribute("map", map);
		}String sql="";

		return "/admin/customer/edit";
	}
}

package com.lvyou.controller.admin;

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.lvyou.controller.MyController;

@Controller("contactController")
@RequestMapping(value = "/admin/contact")
public class ContactController extends MyController {
	

	@RequestMapping(value = "/frame")
	public String frame(Model model, HttpServletRequest request,String flag)throws Exception {
		return "/admin/contact/frame";
	}
	
	@RequestMapping(value = "/list")
	public String list(Model model, HttpServletRequest request,String flag,String phone)throws Exception {
		String aa = "select * from t_customer ";
		List