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Item number: BS-PT-090
1. Environmental introduction
Locale: Java: jdk1.8
Database: Mysql: mysql5.7
Application server: Tomcat: tomcat8.5.31
Development tools: IDEA or eclipse
Development technology: Springboot+Mybatis+Vue+ElmentUI
2. Project introduction
There are many lovers of online novels in China, some of them are loyal readers of small online novels, and some of them regard it as a way of leisure and leisure entertainment, but now the development of the Internet has also brought about explosive growth of information. This has caused many readers obstacles in searching for suitable online novels. How to find suitable novels on a novel platform is a problem worth studying.
In order to help users quickly find their favorite and suitable novels on the Fengluo novel platform, this project is mainly based on collaborative filtering algorithm to make personalized recommendations, actively recommending novels that platform users like or that meet the user's personality characteristics to users , so that users don't have to worry about finding useful information in massive amounts of information.
The design and development of personalized online novel recommendation system based on collaborative filtering algorithm mainly uses collaborative filtering algorithm to recommend corresponding novels to users. Collaborative filtering algorithms generally have three common modes. One is based on the similarity of items, that is, item-based. It recommends by looking for similar items. For example, if you buy a mobile phone, additional items such as mobile phone film will be recommended. The second is based on the similarity of users, that is, user-based. By looking for similar users to find the preferences of similar users, and then make recommendations. The third is based on the mixed mode, that is, mode-based, which mainly realizes the recommendation through the user's operation behavior on the item. For example, the user often browses a certain type of novel, or likes and collects the novel, then the system will Use these as the basis to recommend online novels for users.
This project mainly focuses on the online reading, management and information recommendation of online novels, so that users can quickly find their favorite or useful online novels on this platform. The whole system is developed and implemented based on the IDEA integrated development tool, using the Springboot framework in the JAVA language to build the background service interface, using VUE to build the front-end page of the system, and using MYSQL for basic business data storage.
This project is a personalized web novel recommendation system based on user characteristics. Its main function is to recommend suitable web novels for users. Operational behaviors are used to carry out comprehensive scoring and make relevant recommendations. Therefore, the function of the design system is not only recommendation, but also some basic data sources, so like the management of online novel information, users' operations such as browsing, liking, and collecting online novels are also essential. After the investigation and observation of related similar websites, the relevant business function modules of the system are designed.
The main functions of front-end users include: online registration and login of users, information browsing of online novels released by the platform, user interaction functions including like, collection and comment operations, posting and exchange on platform forums, viewing of system announcements, and novel information Related reading, system recommendation of personalized novels and personal center management. The specific system function structure diagram is shown in Figure 1 below:
The main functions of background management users include: user information management module, personal information management module, communication forum data management, novel information management, novel information information management, novel classification management, novel information management, announcement management, etc.
Three, system display
User registration and login
Front-end users can register online after entering the online novel platform, fill in the relevant information and submit it to the server platform. The system is developed and implemented based on the separation of front-end and back-end. The data of front-end users is transmitted to the server in JSON data format through asynchronous requests, and the server accepts the data. Then analyze it, and then use the saving method of the Mybatis-plus framework to save the data to the database table user table. The following shows the basic interface of user registration, as shown in Figure 1:
Novel recommendation display
When the user logs in to the front-end homepage of the system, he will see the novel information recommended by the system to the current user. The recommended algorithm is the currently popular collaborative filtering algorithm, which uses the hybrid CF mode, which judges the user's interest in the novel based on the user's operation on the novel. Which type of data is interesting, so as to make corresponding data recommendations.
User Forum Exchange
The platform provides users with a small forum function for online communication. After logging in, users can post and communicate in the forum, and users can reply to posts, browse and other related operations. The specific forum communication is shown in the figure below:
Novel information browsing
The novel information is mainly some relevant news information in the industry released by the platform. Users can browse and view it online, and at the same time, they can conduct fuzzy searches based on relevant keywords, and can also filter according to related types. Sorting, such as descending or ascending operations based on popularity (views), update time, etc.
personal center
Personal center is the personal information management operation function provided by the system for current users. It can manage personal basic information, change passwords, and view your favorite record information, etc. The specific personal center management functions are shown in the following figure
Background user management
The user management module in the background is mainly a management module designed for managing platform users. In this operation interface, user information can be queried according to the user name, and the matching method of fuzzy query can be used to realize adding user information online, modifying user information and Delete and other operations
Fiction management
The platform administrator performs relevant management operations on the novel information in the background, mainly realizing adding, modifying, querying, and deleting novel information. At the same time, you can view the detailed introduction of the novel and the evaluation information of the user on the novel. The text of the novel can be uploaded or uploaded. Add the hyperlink information of the novel, so that the front-end users can download the novel online,
information management
The platform administrator performs relevant management operations on the novel information in the background, mainly to realize the addition, modification, query, and deletion of novel information. At the same time, you can view the detailed introduction of the novel information and the user's evaluation information on the novel information. The specific display is as follows: As shown in the figure
Announcement management
The platform administrator performs relevant management operations on the platform announcement information in the background, mainly to realize the addition, modification, query, and deletion of the announcement information, and at the same time, you can view the details of the announcement. The specific display is as shown in the figure:
Fourth, the core code display
package com.project.demo.controller.base;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.project.demo.service.base.BaseService;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import javax.persistence.Query;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
*/
@Slf4j
public class BaseController<E, S extends BaseService<E>> {
@Setter
protected S service;
@PostMapping("/add")
@Transactional
public Map<String, Object> add(HttpServletRequest request) throws IOException {
service.insert(service.readBody(request.getReader()));
return success(1);
}
@Transactional
public Map<String, Object> addMap(Map<String,Object> map){
service.insert(map);
return success(1);
}
@PostMapping("/set")
@Transactional
public Map<String, Object> set(HttpServletRequest request) throws IOException {
service.update(service.readQuery(request), service.readConfig(request), service.readBody(request.getReader()));
return success(1);
}
@RequestMapping(value = "/del")
@Transactional
public Map<String, Object> del(HttpServletRequest request) {
service.delete(service.readQuery(request), service.readConfig(request));
return success(1);
}
@RequestMapping("/get_obj")
public Map<String, Object> obj(HttpServletRequest request) {
Query select = service.select(service.readQuery(request), service.readConfig(request));
List resultList = select.getResultList();
if (resultList.size() > 0) {
JSONObject jsonObject = new JSONObject();
jsonObject.put("obj",resultList.get(0));
return success(jsonObject);
} else {
return success(null);
}
}
@RequestMapping("/get_list")
public Map<String, Object> getList(HttpServletRequest request) {
Map<String, Object> map = service.selectToPage(service.readQuery(request), service.readConfig(request));
return success(map);
}
@RequestMapping("/list_group")
public Map<String, Object> listGroup(HttpServletRequest request) {
Map<String, Object> map = service.selectToList(service.readQuery(request), service.readConfig(request));
return success(map);
}
@RequestMapping("/bar_group")
public Map<String, Object> barGroup(HttpServletRequest request) {
Map<String, Object> map = service.selectBarGroup(service.readQuery(request), service.readConfig(request));
return success(map);
}
@RequestMapping(value = {"/count_group", "/count"})
public Map<String, Object> count(HttpServletRequest request) {
Query count = service.count(service.readQuery(request), service.readConfig(request));
return success(count.getResultList());
}
@RequestMapping(value = {"/sum_group", "/sum"})
public Map<String, Object> sum(HttpServletRequest request) {
Query count = service.sum(service.readQuery(request), service.readConfig(request));
return success(count.getResultList());
}
@RequestMapping(value = {"/avg_group", "/avg"})
public Map<String, Object> avg(HttpServletRequest request) {
Query count = service.avg(service.readQuery(request), service.readConfig(request));
return success(count.getResultList());
}
@PostMapping("/upload")
public Map<String, Object> upload(@RequestParam("file") MultipartFile file) {
log.info("进入方法");
if (file.isEmpty()) {
return error(30000, "没有选择文件");
}
try {
//判断有没路径，没有则创建
String filePath = System.getProperty("user.dir") + "\\target\\classes\\static\\upload\\";
File targetDir = new File(filePath);
if (!targetDir.exists() && !targetDir.isDirectory()) {
if (targetDir.mkdirs()) {
log.info("创建目录成功");
} else {
log.error("创建目录失败");
}
}
// String path = ResourceUtils.getURL("classpath:").getPath() + "static/upload/";
// String filePath = path.replace('/', '\\').substring(1, path.length());
String fileName = file.getOriginalFilename();
File dest = new File(filePath + fileName);
log.info("文件路径:{}", dest.getPath());
log.info("文件名:{}", dest.getName());
file.transferTo(dest);
JSONObject jsonObject = new JSONObject();
jsonObject.put("url", "/api/upload/" + fileName);
return success(jsonObject);
} catch (IOException e) {
log.info("上传失败：{}", e.getMessage());
}
return error(30000, "上传失败");
}
@PostMapping("/import_db")
public Map<String, Object> importDb(@RequestParam("file") MultipartFile file) throws IOException {
service.importDb(file);
return success(1);
}
@RequestMapping("/export_db")
public void exportDb(HttpServletRequest request, HttpServletResponse response) throws IOException {
HSSFWorkbook sheets = service.exportDb(service.readQuery(request), service.readConfig(request));
response.setContentType("application/octet-stream");
response.setHeader("Content-disposition", "attachment;filename=employee.xls");
response.flushBuffer();
sheets.write(response.getOutputStream());
sheets.close();
}
public Map<String, Object> success(Object o) {
Map<String, Object> map = new HashMap<>();
if (o == null) {
map.put("result", null);
return map;
}
if (o instanceof List) {
if (((List) o).size() == 1) {
o = ((List) o).get(0);
map.put("result", o);
}else {
String jsonString = JSONObject.toJSONString(o);
JSONArray objects = service.covertArray(JSONObject.parseArray(jsonString));
map.put("result", objects);
}
} else if (o instanceof Integer || o instanceof String) {
map.put("result", o);
} else {
String jsonString = JSONObject.toJSONString(o);
JSONObject jsonObject = JSONObject.parseObject(jsonString);
JSONObject j = service.covertObject(jsonObject);
map.put("result", j);
}
return map;
}
public Map<String, Object> error(Integer code, String message) {
Map<String, Object> map = new HashMap<>();
map.put("error", new HashMap<String, Object>(4) {
{
put("code", code);
put("message", message);
}});
return map;
}
}
package com.project.demo.controller;
import com.alibaba.fastjson.JSONObject;
import com.project.demo.entity.AccessToken;
import com.project.demo.entity.User;
import com.project.demo.entity.UserGroup;
import com.project.demo.service.AccessTokenService;
import com.project.demo.service.UserGroupService;
import com.project.demo.service.UserService;
import com.project.demo.controller.base.BaseController;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;
import javax.persistence.Query;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.util.*;
/**
* 用户账户：用于保存用户登录信息(User)表控制层
*/
@Slf4j
@RestController
@RequestMapping("user")
public class UserController extends BaseController<User, UserService> {
/**
* 服务对象
*/
@Autowired
public UserController(UserService service) {
setService(service);
}
/**
* Token服务
*/
@Autowired
private AccessTokenService tokenService;
@Autowired
private UserGroupService userGroupService;
/**
* 注册
* @param user
* @return
*/
@PostMapping("register")
public Map<String, Object> signUp(@RequestBody User user) {
// 查询用户
Map<String, String> query = new HashMap<>();
query.put("username",user.getUsername());
List list = service.select(query, new HashMap<>()).getResultList();
if (list.size()>0){
return error(30000, "用户已存在");
}
user.setUserId(null);
user.setPassword(service.encryption(user.getPassword()));
service.save(user);
return success(1);
}
/**
* 找回密码
* @param form
* @return
*/
@PostMapping("forget_password")
public Map<String, Object> forgetPassword(@RequestBody User form,HttpServletRequest request) {
JSONObject ret = new JSONObject();
String username = form.getUsername();
String code = form.getCode();
String password = form.getPassword();
// 判断条件
if(code == null || code.length() == 0){
return error(30000, "验证码不能为空");
}
if(username == null || username.length() == 0){
return error(30000, "用户名不能为空");
}
if(password == null || password.length() == 0){
return error(30000, "密码不能为空");
}
// 查询用户
Map<String, String> query = new HashMap<>();
query.put("username",username);
Query select = service.select(query, service.readConfig(request));
List list = select.getResultList();
if (list.size() > 0) {
User o = (User) list.get(0);
JSONObject query2 = new JSONObject();
JSONObject form2 = new JSONObject();
// 修改用户密码
query2.put("user_id",o.getUserId());
form2.put("password",service.encryption(password));
service.update(query, service.readConfig(request), form2);
return success(1);
}
return error(70000,"用户不存在");
}
/**
* 登录
* @param data
* @param httpServletRequest
* @return
*/
@PostMapping("login")
public Map<String, Object> login(@RequestBody Map<String, String> data, HttpServletRequest httpServletRequest) {
log.info("[执行登录接口]");
String username = data.get("username");
String email = data.get("email");
String phone = data.get("phone");
String password = data.get("password");
List resultList = null;
Map<String, String> map = new HashMap<>();
if(username != null && "".equals(username) == false){
map.put("username", username);
resultList = service.select(map, new HashMap<>()).getResultList();
}
else if(email != null && "".equals(email) == false){
map.put("email", email);
resultList = service.select(map, new HashMap<>()).getResultList();
}
else if(phone != null && "".equals(phone) == false){
map.put("phone", phone);
resultList = service.select(map, new HashMap<>()).getResultList();
}else{
return error(30000, "账号或密码不能为空");
}
if (resultList == null || password == null) {
return error(30000, "账号或密码不能为空");
}
//判断是否有这个用户
if (resultList.size()<=0){
return error(30000,"用户不存在");
}
User byUsername = (User) resultList.get(0);
Map<String, String> groupMap = new HashMap<>();
groupMap.put("name",byUsername.getUserGroup());
List groupList = userGroupService.select(groupMap, new HashMap<>()).getResultList();
if (groupList.size()<1){
return error(30000,"用户组不存在");
}
UserGroup userGroup = (UserGroup) groupList.get(0);
//查询用户审核状态
if (!StringUtils.isEmpty(userGroup.getSourceTable())){
String sql = "select examine_state from "+ userGroup.getSourceTable() +" WHERE user_id = " + byUsername.getUserId();
String res = String.valueOf(service.runCountSql(sql).getSingleResult());
if (res==null){
return error(30000,"用户不存在");
}
if (!res.equals("已通过")){
return error(30000,"该用户审核未通过");
}
}
//查询用户状态
if (byUsername.getState()!=1){
return error(30000,"用户非可用状态，不能登录");
}
String md5password = service.encryption(password);
if (byUsername.getPassword().equals(md5password)) {
// 存储Token到数据库
AccessToken accessToken = new AccessToken();
accessToken.setToken(UUID.randomUUID().toString().replaceAll("-", ""));
accessToken.setUser_id(byUsername.getUserId());
tokenService.save(accessToken);
// 返回用户信息
JSONObject user = JSONObject.parseObject(JSONObject.toJSONString(byUsername));
user.put("token", accessToken.getToken());
JSONObject ret = new JSONObject();
ret.put("obj",user);
return success(ret);
} else {
return error(30000, "账号或密码不正确");
}
}
/**
* 修改密码
* @param data
* @param request
* @return
*/
@PostMapping("change_password")
public Map<String, Object> change_password(@RequestBody Map<String, String> data, HttpServletRequest request){
// 根据Token获取UserId
String token = request.getHeader("x-auth-token");
Integer userId = tokenGetUserId(token);
// 根据UserId和旧密码获取用户
Map<String, String> query = new HashMap<>();
String o_password = data.get("o_password");
query.put("user_id" ,String.valueOf(userId));
query.put("password" ,service.encryption(o_password));
Query ret = service.count(query, service.readConfig(request));
List list = ret.getResultList();
Object s = list.get(0);
int count = Integer.parseInt(list.get(0).toString());
if(count > 0){
// 修改密码
Map<String,Object> form = new HashMap<>();
form.put("password",service.encryption(data.get("password")));
service.update(query,service.readConfig(request),form);
return success(1);
}
return error(10000,"密码修改失败！");
}
/**
* 登录态
* @param request
* @return
*/
@GetMapping("state")
public Map<String, Object> state(HttpServletRequest request) {
JSONObject ret = new JSONObject();
// 获取状态
String token = request.getHeader("x-auth-token");
// 根据登录态获取用户ID
Integer userId = tokenGetUserId(token);
log.info("[返回userId] {}",userId);
if(userId == null || userId == 0){
return error(10000,"用户未登录!");
}
// 根据用户ID获取用户
Map<String,String> query = new HashMap<>();
query.put("user_id" ,String.valueOf(userId));
// 根据用户ID获取
Query select = service.select(query,service.readConfig(request));
List resultList = select.getResultList();
if (resultList.size() > 0) {
JSONObject user = JSONObject.parseObject(JSONObject.toJSONString(resultList.get(0)));
user.put("token",token);
ret.put("obj",user);
return success(ret);
} else {
return error(10000,"用户未登录!");
}
}
/**
* 登录态
* @param request
* @return
*/
@GetMapping("quit")
public Map<String, Object> quit(HttpServletRequest request) {
String token = request.getHeader("x-auth-token");
JSONObject ret = new JSONObject();
Map<String, String> query = new HashMap<>(16);
query.put("token", token);
try{
tokenService.delete(query,service.readConfig(request));
}catch (Exception e){
e.printStackTrace();
}
return success("退出登录成功！");
}
/**
* 获取登录用户ID
* @param token
* @return
*/
public Integer tokenGetUserId(String token) {
log.info("[获取的token] {}",token);
// 根据登录态获取用户ID
if(token == null || "".equals(token)){
return 0;
}
Map<String, String> query = new HashMap<>(16);
query.put("token", token);
AccessToken byToken = tokenService.findOne(query);
if(byToken == null){
return 0;
}
return byToken.getUser_id();
}
/**
* 重写add
* @return
*/
@PostMapping("/add")
@Transactional
public Map<String, Object> add(HttpServletRequest request) throws IOException {
Map<String,Object> map = service.readBody(request.getReader());
map.put("password",service.encryption(String.valueOf(map.get("password"))));
service.insert(map);
return success(1);
}
}
5. Display of related works
Practical projects based on Java development, Python development, PHP development, C# development and other related language development
Front-end practical projects developed based on Nodejs, Vue and other front-end technologies
Related works based on WeChat applet and Android APP application development
Development and application of embedded IoT based on 51 single-chip microcomputer
AI intelligent application based on various algorithms
Various data management and recommendation systems based on big data
