目錄附錄附錄A：用戶注冊(cè)登錄模塊核心代碼注冊(cè)：@ResponseBody @PostMapping("/admin/huiyuan/save") publicJsonResultsave(){ Stringaccountname=request.getParameter("accountname");//請(qǐng)求賬號(hào) Stringpassword=request.getParameter("password");//請(qǐng)求密碼 Stringname=request.getParameter("name");//請(qǐng)求姓名 Stringidcardno=request.getParameter("idcardno");//請(qǐng)求身份證號(hào) Stringidentity=request.getParameter("identity");//請(qǐng)求驗(yàn)證 Stringemail=request.getParameter("email");//請(qǐng)求郵箱 Stringmobile=request.getParameter("mobile");//請(qǐng)求手機(jī)號(hào) Stringaddress=request.getParameter("address");//請(qǐng)求地址 Stringtouxiang=request.getParameter("touxiang");//請(qǐng)求頭像 Stringsex=request.getParameter("sex");//請(qǐng)求性別 Stringdes=request.getParameter("des"); if(huiyuanSrv.isExist("whereaccountname='"+accountname+"'")) returnJsonResult.error(-1,"用戶名已經(jīng)存在");//判讀用戶名是否存在 Huiyuanhuiyuan=newHuiyuan(); huiyuan.setAccountname(accountname==null?"":accountname); huiyuan.setPassword(password==null?"":password);//判讀密碼是否正確 huiyuan.setPaypwd(huiyuan.getPassword()); if(mobile!=null) huiyuan.setMobile(mobile);//判讀不為空 else huiyuan.setMobile(accountname);//判讀不為空 if(address!=null) huiyuan.setAddress(address);//判讀不為空 if(sex!=null) huiyuan.setSex(sex);//判讀不為空 else huiyuan.setSex("男"); huiyuan.setNickname(accountname); huiyuan.setName(name);huiyuan.setTypeid(1); huiyuan.setRegdate(newDate()); huiyuan.setIdcardno(idcardno==null?"":idcardno); huiyuan.setLogtimes(0);//判讀不為空 huiyuan.setIdentity(identity==null?"":identity); if(touxiang!=null)//判讀不為空 huiyuan.setTouxiang(touxiang); else huiyuan.setTouxiang("/upload/nopic.jpg"); huiyuan.setEmail(email==null?"":email);//判讀不為空 huiyuan.setStatus(1); huiyuan.setYue(0.0); huiyuan.setDes(des==null?"":des); huiyuanSrv.save(huiyuan); returnJsonResult.success(1,"注冊(cè)成功");//成功 }登錄：@PostMapping("/admin/huiyuan/login") privateJsonResultlogin(){ Stringaccountname=request.getParameter("accountname");//賦值賬號(hào) Stringpassword=request.getParameter("password");//賦值密碼 Stringfilter=MessageFormat.format("whereaccountname=''{0}''andpassword=''{1}''",accountname,password); Huiyuanhuiyuan=(Huiyuan)huiyuanSrv.load(filter); if(huiyuan==null)//賬號(hào)密碼不匹配 returnJsonResult.error(-1,"系統(tǒng)賬戶和密碼不匹配"); if(!huiyuan.getPassword().equals(password))//密碼錯(cuò)誤 returnJsonResult.error(-2,"密碼錯(cuò)誤"); huiyuan.setLogtimes(huiyuan.getLogtimes()+1); huiyuanSrv.update(huiyuan); request.getSession().setAttribute("huiyuan",huiyuan); returnJsonResult.success(1,"成功登陸",huiyuan);//成功 }附錄B：商品信息模塊核心代碼基于用戶的協(xié)同過濾找出最相似用戶：Map<String,Double>mapSim=newHashMap<String,Double>();//存放相似度集合Map<String,Double>currentUserEnt=mapUsers.get(String.valueOf(id));//獲取當(dāng)前用戶//遍歷每個(gè)用戶for(Map.Entry<String,Map<String,Double>>userEnt:mapUsers.entrySet()){StringperId=userEnt.getKey();if(!newInteger(id).toString().equals(perId)){//遍歷到的用戶非當(dāng)前用戶doublesim=getUserSimilar(currentUserEnt,userEnt.getValue());System.out.println(id+"與"+perId+"的相似度為："+String.valueOf(sim));mapSim.put(perId,sim);}}List<Map.Entry<String,Double>>wordMap=newArrayList<>(mapSim.entrySet());Collections.sort(wordMap,newComparator<Map.Entry<String,Double>>(){//根據(jù)value排序publicintcompare(Map.Entry<String,Double>o1,Map.Entry<String,Double>o2){doubleresult=o2.getValue()-o1.getValue();if(result>0)return1;elseif(result==0)return0;elsereturn-1;}});for(Map.Entry<String,Double>set:wordMap){System.out.println("map:"+set.getKey()+""+set.getValue());}StringmaxSimilar=wordMap.get(0).getKey();System.out.println("最大相識(shí)"+maxSimilar);//找出最大相似度}皮爾遜相關(guān)系數(shù)計(jì)算公式：privatestaticdoublegetUserSimilar(Map<String,Double>pm1,Map<String,Double>pm2){intn=pm1.size();//數(shù)量nDoublesxy=0.0;//Σxy=x1*y1+x2*y2+xn*ynDoublesx=0.0;//Σx=x1+x2+xnDoublesy=0.0;//Σy=y1+y2+...ynDoublesx2=0.0;//Σx2=(x1)2+(x2)2+(xn)2Doublesy2=0.0;//Σy2=(y1)2+(y2)2+(yn)2for(Map.Entry<String,Double>pme:pm1.entrySet()){Stringkey=pme.getKey();System.out.println("key:"+key);Doublex=pme.getValue();Doubley=pm2.get(key);System.out.println("x:"+String.valueOf(x)+",y:"+String.valueOf(y));if(x!=null&&y!=null){sxy+=x*y;//x*y求和sx+=x;//x求和sy+=y;//y求和sx2+=Math.pow(x,2.0);//x求和平方sy2+=Math.pow(y,2.0);//y求和平方System.out.println(":sxy:"+sxy+",sx:"+sx+",sy"+",sx2:"+sx2+",sy2:"+sy2);}}doublesd=sxy-(sx*sy)/n;doublesm=Math.sqrt((sx2-(Math.pow(sx,2)/n))*(sy2-(Math.pow(sy,2)/n)));System.out.println("sd:"+sd+",sm:"+sm);returnMath.abs(sm==0?0:sd/sm);//相應(yīng)的公式}}把相似用戶的喜好商品賦值給當(dāng)前用戶：try{ ItemSimilarityitemSimilarity=newPearsonCorrelationSimilarity(dataModel);//相似用戶的喜好賦值給當(dāng)前用戶 GenericItemBasedRecommenderrecommender=newGenericItemBasedRecommender(dataModel,itemSimilarity); List<RecommendedItem>listRecommendedItem=recommender.recommendedBecause(huiyuan.getId(),id,5);//列舉五個(gè)推薦商品