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/**      * 前端智能排序      */ 	@IgnoreAuth     @RequestMapping("/autoSort")     public R autoSort(@RequestParam Map<String, Object> params,NaichashangpinEntity naichashangpin, HttpServletRequest request,String pre){         EntityWrapper<NaichashangpinEntity> ew = new EntityWrapper<NaichashangpinEntity>();         Map<String, Object> newMap = new HashMap<String, Object>();         Map<String, Object> param = new HashMap<String, Object>(); 		Iterator<Map.Entry<String, Object>> it = param.entrySet().iterator(); 		while (it.hasNext()) { 			Map.Entry<String, Object> entry = it.next(); 			String key = entry.getKey(); 			String newKey = entry.getKey(); 			if (pre.endsWith(".")) { 				newMap.put(pre + newKey, entry.getValue()); 			} else if (StringUtils.isEmpty(pre)) { 				newMap.put(newKey, entry.getValue()); 			} else { 				newMap.put(pre + "." + newKey, entry.getValue()); 			} 		} 		params.put("sort", "clicknum");                  params.put("order", "desc"); 		PageUtils page = naichashangpinService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, naichashangpin), params), params));         return R.ok().put("data", page);     }   	/**      * 协同算法（按用户购买推荐）      */     @RequestMapping("/autoSort2")     public R autoSort2(@RequestParam Map<String, Object> params,NaichashangpinEntity naichashangpin, HttpServletRequest request){     	String userId = request.getSession().getAttribute("userId").toString();     	String goodtypeColumn = "naichafenlei";     	List<OrdersEntity> orders = ordersService.selectList(new EntityWrapper<OrdersEntity>().eq("userid", userId).eq("tablename", "naichashangpin").orderBy("addtime", false));         List<String> goodtypes = new ArrayList<String>();     	Integer limit = params.get("limit")==null?10:Integer.parseInt(params.get("limit").toString());     	List<NaichashangpinEntity> naichashangpinList = new ArrayList<NaichashangpinEntity>(); 	//去重     	List<OrdersEntity> ordersDist = new ArrayList<OrdersEntity>();     	for(OrdersEntity o1 : orders) {     		boolean addFlag = true;     		for(OrdersEntity o2 : ordersDist) {     			if(o1.getGoodid()==o2.getGoodid() || o1.getGoodtype().equals(o2.getGoodtype())) {     				addFlag = false;     				break;     			}     		}     		if(addFlag) ordersDist.add(o1);     	}         if(ordersDist!=null && ordersDist.size()>0) {         	for(OrdersEntity o : ordersDist) {         		naichashangpinList.addAll(naichashangpinService.selectList(new EntityWrapper<NaichashangpinEntity>().eq(goodtypeColumn, o.getGoodtype())));         	}         }     	EntityWrapper<NaichashangpinEntity> ew = new EntityWrapper<NaichashangpinEntity>(); 	params.put("sort", "id"); 	params.put("order", "desc"); 	PageUtils page = naichashangpinService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, naichashangpin), params), params));         List<NaichashangpinEntity> pageList = (List<NaichashangpinEntity>)page.getList();         if(naichashangpinList.size()<limit) {         	int toAddNum = (limit-naichashangpinList.size())<=pageList.size()?(limit-naichashangpinList.size()):pageList.size();             for(NaichashangpinEntity o1 : pageList) {                 boolean addFlag = true;                 for(NaichashangpinEntity o2 : naichashangpinList) {                     if(o1.getId().intValue()==o2.getId().intValue()) {                         addFlag = false;                         break;                     }                 }                 if(addFlag) {                     naichashangpinList.add(o1);                     if(--toAddNum==0) break;                 }             }         }         page.setList(naichashangpinList); 	return R.ok().put("data", page);     } 

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