@SpringBootApplication
@MapperScan("com.atguigu.mapper")
public class Main {

    public static void main(String[] args) {
        SpringApplication.run(Main.class,args);
    }

    //配置mybatis-plus插件
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL)); //分页
        interceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());  //乐观锁
        interceptor.addInnerInterceptor(new BlockAttackInnerInterceptor());  //防全局修改和删除
        return interceptor;
    }

}

package com.atguigu.utils;

/**
 * 全局统一返回结果类
 */
public class Result<T> {
    // 返回码
    private Integer code;
    // 返回消息
    private String message;
    // 返回数据
    private T data;
    public Result(){}
    // 返回数据
    protected static <T> Result<T> build(T data) {
        Result<T> result = new Result<T>();
        if (data != null)
            result.setData(data);
        return result;
    }
    public static <T> Result<T> build(T body, Integer code, String message) {
        Result<T> result = build(body);
        result.setCode(code);
        result.setMessage(message);
        return result;
    }
    public static <T> Result<T> build(T body, ResultCodeEnum resultCodeEnum) {
        Result<T> result = build(body);
        result.setCode(resultCodeEnum.getCode());
        result.setMessage(resultCodeEnum.getMessage());
        return result;
    }

    public static<T> Result<T> ok(T data){
        Result<T> result = build(data);
        return build(data, ResultCodeEnum.SUCCESS);
    }
    
    /**
     * 操作成功
     *
     * @param <T>
     * @param data          baseCategory1List
     * @param usernameError
     * @return
     */
    
    public static<T> Result<T> ok(T data, ResultCodeEnum usernameError){
        Result<T> result = build(data);
        return build(data, ResultCodeEnum.SUCCESS);
    }
    public Result<T> message(String msg){
        this.setMessage(msg);
        return this;
    }
    public Result<T> code(Integer code){
        this.setCode(code);
        return this;
    }
    public Integer getCode() {
        return code;
    }
    public void setCode(Integer code) {
        this.code = code;
    }
    public String getMessage() {
        return message;
    }
    public void setMessage(String message) {
        this.message = message;
    }
    public T getData() {
        return data;
    }
    public void setData(T data) {
        this.data = data;
    }
}

/**
 * 统一返回结果状态信息类
 *
 */
public enum ResultCodeEnum {

    SUCCESS(200,"success"),
    USERNAME_ERROR(501,"usernameError"),
    PASSWORD_ERROR(503,"passwordError"),
    NOTLOGIN(504,"notLogin"),
    USERNAME_USED(505,"userNameUsed");

    private Integer code;
    private String message;
    private ResultCodeEnum(Integer code, String message) {
        this.code = code;
        this.message = message;
    }
    public Integer getCode() {
        return code;
    }
    public String getMessage() {
        return message;
    }
}

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public final class MD5Util {
    public static String encrypt(String strSrc) {
        try {
            char hexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8',
                    '9', 'a', 'b', 'c', 'd', 'e', 'f' };
            byte[] bytes = strSrc.getBytes();
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(bytes);
            bytes = md.digest();
            int j = bytes.length;
            char[] chars = new char[j * 2];
            int k = 0;
            for (int i = 0; i < bytes.length; i++) {
                byte b = bytes[i];
                chars[k++] = hexChars[b >>> 4 & 0xf];
                chars[k++] = hexChars[b & 0xf];
            }
            return new String(chars);
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
            throw new RuntimeException("MD5加密出错！！+" + e);
        }
    }
}

@Data
public class Type implements Serializable {
    @TableId
    private Integer tid;

    private String tname;

    @Version
    private Integer version;

    private Integer isDeleted;

    private static final long serialVersionUID = 1L;
}

package com.atguigu.utils;

import com.alibaba.druid.util.StringUtils;
import io.jsonwebtoken.*;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;

import java.util.Date;

@Data
@Component
@ConfigurationProperties(prefix = "jwt.token")
public class JwtHelper {

    private  long tokenExpiration; //有效时间,单位毫秒 1000毫秒 == 1秒
    private  String tokenSignKey;  //当前程序签名秘钥

    //生成token字符串
    public  String createToken(Long userId) {
        System.out.println("tokenExpiration = " + tokenExpiration);
        System.out.println("tokenSignKey = " + tokenSignKey);
        String token = Jwts.builder()

            .setSubject("YYGH-USER")
            .setExpiration(new Date(System.currentTimeMillis() + tokenExpiration*1000*60)) //单位分钟
            .claim("userId", userId)
            .signWith(SignatureAlgorithm.HS512, tokenSignKey)
            .compressWith(CompressionCodecs.GZIP)
            .compact();
        return token;
    }

    //从token字符串获取userid
    public  Long getUserId(String token) {
        if(StringUtils.isEmpty(token)) return null;
        Jws<Claims> claimsJws = Jwts.parser().setSigningKey(tokenSignKey).parseClaimsJws(token);
        Claims claims = claimsJws.getBody();
        Integer userId = (Integer)claims.get("userId");
        return userId.longValue();
    }
    //判断token是否有效
    public  boolean isExpiration(String token){
        try {
            boolean isExpire = Jwts.parser()
                .setSigningKey(tokenSignKey)
                .parseClaimsJws(token)
                .getBody()
                .getExpiration().before(new Date());
            //没有过期，有效，返回false
            return isExpire;
        }catch(Exception e) {
            //过期出现异常，返回true
            return true;
        }
    }
}

@SpringBootTest
public class JwtTest {

    @Autowired
    private JwtHelper jwtHelper;

    @Test
    public void test(){
        //生成 传入用户标识
        String token = jwtHelper.createToken(1L);
        System.out.println("token = " + token);

        //解析用户标识
        int userId = jwtHelper.getUserId(token).intValue();
        System.out.println("userId = " + userId);

        //校验是否到期! false 未到期 true到期
        boolean expiration = jwtHelper.isExpiration(token);
        System.out.println("expiration = " + expiration);
    }

}

{
    "username":"zhangsan", //用户名
    "userPwd":"123456"     //明文密码
}

{
   "code":"200",         // 成功状态码 
   "message":"success"   // 成功状态描述
   "data":{
    "token":"... ..." // 用户id的token
  }
}

{
   "code":"501",
   "message":"用户名有误"
   "data":{}
}

{
   "code":"503",
   "message":"密码有误"
   "data":{}
}

@RestController
@RequestMapping("user")
@CrossOrigin
public class UserController {
    @Autowired
    private UserService userService;

    /**
     * 登录需求
     * 地址: /user/login
     * 方式: post
     * 参数:
     *    {
     *     "username":"zhangsan", //用户名
     *     "userPwd":"123456"     //明文密码
     *    }
     * 返回:
     *   {
     *    "code":"200",         // 成功状态码
     *    "message":"success"   // 成功状态描述
     *    "data":{
     *         "token":"... ..." // 用户id的token
     *     }
     *  }
     *
     * 大概流程:
     *    1. 账号进行数据库查询 返回用户对象
     *    2. 对比用户密码(md5加密)
     *    3. 成功,根据userId生成token -> map key=token value=token值 - result封装
     *    4. 失败,判断账号还是密码错误,封装对应的枚举错误即可
     */
    @PostMapping("login")
    public Result login(@RequestBody User user){
        Result result = userService.login(user);
        System.out.println("result = " + result);
        return result;
    }

}

@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User>
    implements UserService{
    @Autowired
    private JwtHelper jwtHelper;
    @Autowired
    private  UserMapper userMapper;

    /**
     * 登录业务实现
     * @param user
     * @return result封装
     */
    @Override
    public Result login(User user) {

        //根据账号查询
        LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(User::getUsername,user.getUsername());
        User loginUser = userMapper.selectOne(queryWrapper);

        //账号判断
        if (loginUser == null) {
            //账号错误
            return Result.build(null, ResultCodeEnum.USERNAME_ERROR);
        }

        //判断密码
        if (!StringUtils.isEmpty(user.getUserPwd())
            && loginUser.getUserPwd().equals(MD5Util.encrypt(user.getUserPwd())))
        {
            //账号密码正确
            //根据用户唯一标识生成token
            String token = jwtHelper.createToken(Long.valueOf(loginUser.getUid()));

            Map data = new HashMap();
            data.put("token",token);

            return Result.ok(data);
        }

        //密码错误
        return Result.build(null,ResultCodeEnum.PASSWORD_ERROR);
    }
}

token: token内容

{
    "code": 200,
    "message": "success",
    "data": {
        "loginUser": {
            "uid": 1,
            "username": "zhangsan",
            "userPwd": "",
            "nickName": "张三"
        }
    }
}

{
    "code": 504,
    "message": "notLogin",
    "data": null
}

/**
 * 地址: user/getUserInfo
 * 方式: get
 * 请求头: token = token内容
 * 返回:
 *    {
 *     "code": 200,
 *     "message": "success",
 *     "data": {
 *         "loginUser": {
 *             "uid": 1,
 *             "username": "zhangsan",
 *             "userPwd": "",
 *             "nickName": "张三"
 *         }
 *      }
 *   }
 *
 * 大概流程:
 *    1.获取token,解析token对应的userId
 *    2.根据userId,查询用户数据
 *    3.将用户数据的密码置空,并且把用户数据封装到结果中key = loginUser
 *    4.失败返回504 (本次先写到当前业务,后期提取到拦截器和全局异常处理器)
 */
@GetMapping("getUserInfo")
public Result userInfo(@RequestHeader String token){
    Result result = userService.getUserInfo(token);
    return result;
}

/**
 * 查询用户数据
 * @param token
 * @return result封装
 */
@Override
public Result getUserInfo(String token) {

    //1.判定是否有效期
    if (jwtHelper.isExpiration(token)) {
        //true过期,直接返回未登录
        return Result.build(null,ResultCodeEnum.NOTLOGIN);
    }

    //2.获取token对应的用户
    int userId = jwtHelper.getUserId(token).intValue();

    //3.查询数据
    User user = userMapper.selectById(userId);

    if (user != null) {
        user.setUserPwd(null);
        Map data = new HashMap();
        data.put("loginUser",user);
        return Result.ok(data);
    }

    return Result.build(null,ResultCodeEnum.NOTLOGIN);
}

username=zhangsan

{
   "code":"200",
   "message":"success"
   "data":{}
}

{
    "code":"505",
   "message":"用户名占用"
   "data":{}
}

/**
 * url地址：user/checkUserName
 * 请求方式：POST
 * 请求参数：param形式
 * username=zhangsan
 * 响应数据:
 * {
 *    "code":"200",
 *    "message":"success"
 *    "data":{}
 * }
 *
 * 实现步骤:
 *   1. 获取账号数据
 *   2. 根据账号进行数据库查询
 *   3. 结果封装
 */
@PostMapping("checkUserName")
public Result checkUserName(String username){
    Result result = userService.checkUserName(username);
    return result;
}

/**
 * 检查账号是否可以注册
 *
 * @param username 账号信息
 * @return
 */
@Override
public Result checkUserName(String username) {

    LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
    queryWrapper.eq(User::getUsername,username);
    User user = userMapper.selectOne(queryWrapper);

    if (user != null){
        return Result.build(null,ResultCodeEnum.USERNAME_USED);
    }

    return Result.ok(null);
}

{
    "username":"zhangsan",
    "userPwd":"123456", 
    "nickName":"张三"
}

{
   "code":"200",
   "message":"success"
   "data":{}
}

{
   "code":"505",
   "message":"用户名占用"
   "data":{}
}

/**
* url地址：user/regist
* 请求方式：POST
* 请求参数：
* {
*     "username":"zhangsan",
*     "userPwd":"123456",
*     "nickName":"张三"
* }
* 响应数据：
* {
*    "code":"200",
*    "message":"success"
*    "data":{}
* }
*
* 实现步骤:
*   1. 将密码加密
*   2. 将数据插入
*   3. 判断结果,成 返回200 失败 505
*/

@PostMapping("regist")
public Result regist(@RequestBody User user){
  Result result = userService.regist(user);
  return result;
}

@Override
public Result regist(User user) {
    LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
    queryWrapper.eq(User::getUsername,user.getUsername());
    Long count = userMapper.selectCount(queryWrapper);

    if (count > 0){
        return Result.build(null,ResultCodeEnum.USERNAME_USED);
    }

    user.setUserPwd(MD5Util.encrypt(user.getUserPwd()));
    int rows = userMapper.insert(user);
    System.out.println("rows = " + rows);
    return Result.ok(null);
}

{
   "code":"200",
   "message":"OK"
   "data":{
            [
                {
                    "tid":"1",
                    "tname":"新闻"
                },
                {
                    "tid":"2",
                    "tname":"体育"
                },
                {
                    "tid":"3",
                    "tname":"娱乐"
                },
                {
                    "tid":"4",
                    "tname":"科技"
                },
                {
                    "tid":"5",
                    "tname":"其他"
                }
            ]
    }
}

@RestController
@RequestMapping("portal")
@CrossOrigin
public class PortalController {

    @Autowired
    private TypeService typeService;

    /**
     * 查询全部类别信息
     * @return
     */
    @GetMapping("findAllTypes")
    public Result findAllTypes(){
        //直接调用业务层,查询全部数据
        List<Type> list = typeService.list();
        return  Result.ok(list);
    }
}

{
   "code":"200",
   "message":"success"
   "data":{
      "pageInfo":{
        "pageData":[
          {
            "hid":"1",                     // 新闻id 
            "title":"尚硅谷宣布 ... ...",   // 新闻标题
            "type":"1",                    // 新闻所属类别编号
            "pageViews":"40",              // 新闻浏览量
            "pastHours":"3" ,              // 发布时间已过小时数
            "publisher":"1"                // 发布用户ID
        },
        {
            "hid":"1",                     // 新闻id 
            "title":"尚硅谷宣布 ... ...",   // 新闻标题
            "type":"1",                    // 新闻所属类别编号
            "pageViews":"40",              // 新闻浏览量
            "pastHours":"3",              // 发布时间已过小时数
            "publisher":"1"                // 发布用户ID
        },
        {
            "hid":"1",                     // 新闻id 
            "title":"尚硅谷宣布 ... ...",   // 新闻标题
            "type":"1",                    // 新闻所属类别编号
            "pageViews":"40",              // 新闻浏览量
            "pastHours":"3",               // 发布时间已过小时数
            "publisher":"1"                // 发布用户ID
        }
        ],
      "pageNum":1,    //页码数
      "pageSize":10,  // 页大小
      "totalPage":20, // 总页数
      "totalSize":200 // 总记录数
    }
  }
}

package com.atguigu.vo;

import lombok.Data;

@Data
public class PortalVo {
    
    private String keyWords;
    private Integer type;
    private Integer pageNum = 1;
    private Integer pageSize =10;
}

/**
 * 首页分页查询
 * @return
 */
@PostMapping("findNewsPage")
public Result findNewPage(@RequestBody PortalVo portalVo){
    Result result = headlineService.findNewsPage(portalVo);
    return result;
}

@Service
public class HeadlineServiceImpl extends ServiceImpl<HeadlineMapper, Headline>
    implements HeadlineService{

    @Autowired
    private HeadlineMapper headlineMapper;

    /**
     * 首页数据查询
     * @param portalVo
     * @return
     */
    @Override
    public Result findNewsPage(PortalVo portalVo) {

        //1.条件拼接 需要非空判断
        LambdaQueryWrapper<Headline> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.like(!StringUtils.isEmpty(portalVo.getKeyWords()),Headline::getTitle,portalVo.getKeyWords())
                .eq(portalVo.getType()!= null,Headline::getType,portalVo.getType());

        //2.分页参数
        IPage<Headline> page = new Page<>(portalVo.getPageNum(),portalVo.getPageSize());

        //3.分页查询
        //查询的结果 "pastHours":"3"   // 发布时间已过小时数 我们查询返回一个map
        //自定义方法
        headlineMapper.selectPageMap(page, portalVo);

        //4.结果封装
        //分页数据封装
        Map<String,Object> pageInfo =new HashMap<>();
        pageInfo.put("pageData",page.getRecords());
        pageInfo.put("pageNum",page.getCurrent());
        pageInfo.put("pageSize",page.getSize());
        pageInfo.put("totalPage",page.getPages());
        pageInfo.put("totalSize",page.getTotal());

        Map<String,Object> pageInfoMap=new HashMap<>();
        pageInfoMap.put("pageInfo",pageInfo);
        // 响应JSON
        return Result.ok(pageInfoMap);
    }
}

public interface HeadlineMapper extends BaseMapper<Headline> {

    //自定义分页查询方法
    IPage<Map> selectPageMap(IPage<Headline> page, 
                @Param("portalVo") PortalVo portalVo);
}

{
    "code":"200",
    "message":"success",
    "data":{
        "headline":{
            "hid":"1",                     // 新闻id 
            "title":"马斯克宣布 ... ...",   // 新闻标题
            "article":"... ..."            // 新闻正文
            "type":"1",                    // 新闻所属类别编号
            "typeName":"科技",             // 新闻所属类别
            "pageViews":"40",              // 新闻浏览量
            "pastHours":"3" ,              // 发布时间已过小时数
            "publisher":"1" ,              // 发布用户ID
            "author":"张三"                 // 新闻作者
        }
    }
}

 /**
 * 首页详情接口
 * @param hid
 * @return
 */
@PostMapping("showHeadlineDetail")
public Result showHeadlineDetail(Integer hid){
    Result result = headlineService.showHeadlineDetail(hid);
    return result;
}

/**
 * 详情数据查询
 * "headline":{
 * "hid":"1",                     // 新闻id
 * "title":"马斯克宣布 ... ...",   // 新闻标题
 * "article":"... ..."            // 新闻正文
 * "type":"1",                    // 新闻所属类别编号
 * "typeName":"科技",             // 新闻所属类别
 * "pageViews":"40",              // 新闻浏览量
 * "pastHours":"3" ,              // 发布时间已过小时数
 * "publisher":"1" ,              // 发布用户ID
 * "author":"张三"                 // 新闻作者
 * }
 * 注意: 是多表查询 , 需要更新浏览量+1
 *
 * @param hid
 * @return
 */
@Override
public Result showHeadlineDetail(Integer hid) {

    //1.实现根据id的查询(多表
    Map headLineDetail = headlineMapper.selectDetailMap(hid);
    //2.拼接头条对象(阅读量和version)进行数据更新
    Headline headline = new Headline();
    headline.setHid(hid);
    headline.setPageViews((Integer) headLineDetail.get("pageViews")+1); //阅读量+1
    headline.setVersion((Integer) headLineDetail.get("version")); //设置版本
    headlineMapper.updateById(headline);

    Map<String,Object> pageInfoMap=new HashMap<>();
    pageInfoMap.put("headline",headLineDetail);
    return Result.ok(pageInfoMap);
}

/**
 * 分页查询头条详情
 * @param hid
 * @return
 */
Map selectDetailMap(Integer hid);

{
"code":"200",
"message":"success",
"data":{}
}

{
"code":"504",
"message":"loginExpired",
"data":{}
}

@GetMapping("checkLogin")
public Result checkLogin(@RequestHeader String token){
    if (StringUtils.isEmpty(token) || jwtHelper.isExpiration(token)){
        //没有传或者过期 未登录
        return Result.build(null, ResultCodeEnum.NOTLOGIN);
    }

    return Result.ok(null);
}

package com.atguigu.interceptors;

import com.alibaba.druid.util.StringUtils;
import com.atguigu.utils.JwtHelper;
import com.atguigu.utils.Result;
import com.atguigu.utils.ResultCodeEnum;
import com.fasterxml.jackson.databind.ObjectMapper;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

@Component
public class LoginProtectInterceptor implements HandlerInterceptor {

    @Autowired
    private JwtHelper jwtHelper;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        String token = request.getHeader("token");
        if (StringUtils.isEmpty(token) || jwtHelper.isExpiration(token)) {
            Result result = Result.build(null, ResultCodeEnum.NOTLOGIN);
            ObjectMapper objectMapper = new ObjectMapper();
            String json = objectMapper.writeValueAsString(result);
            response.getWriter().print(json);
            //拦截
            return false;
        }
        //放行
        return true;
    }
}

package com.atguigu.config;

import com.atguigu.interceptors.LoginProtectInterceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    @Autowired
    private LoginProtectInterceptor loginProtectInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginProtectInterceptor).addPathPatterns("/headline/**");
    }
}

token: ... ...

{
"code":"504",
"message":"loginExpired",
"data":{}
}

{
"code":"200",
"message":"success",
"data":{}
}

package com.atguigu.controller;

import com.atguigu.pojo.Headline;
import com.atguigu.service.HeadlineService;
import com.atguigu.utils.JwtHelper;
import com.atguigu.utils.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * Created By Shiguang On 2024/9/10 14:20
 */

@RestController
@RequestMapping("headline")
@CrossOrigin
public class HeadLineController {


    @Autowired
    private JwtHelper jwtHelper;
    @Autowired
    private HeadlineService headlineService;

    /**
     * 实现步骤:
     * 1. token获取userId [无需校验,拦截器会校验]
     * 2. 封装headline数据
     * 3. 插入数据即可
     */
    @PostMapping("publish")
    public Result publish(@RequestBody Headline headline, @RequestHeader String token) {

        int userId = jwtHelper.getUserId(token).intValue();
        headline.setPublisher(userId);
        Result result = headlineService.publish(headline);
        return result;
    }
}

/**
* 发布数据
*
* @param headline
* @return
*/
@Override
public Result publish(Headline headline) {
    headline.setCreateTime(new Date());
    headline.setUpdateTime(new Date());
    headline.setPageViews(0);
    headlineMapper.insert(headline);
    return Result.ok(null);
}

{
    "code":"200",
    "message":"success",
    "data":{
        "headline":{
            "hid":"1",
            "title":"马斯克宣布",
            "article":"... ... ",
            "type":"2"
        }
    }
}

@PostMapping("findHeadlineByHid")
public Result findHeadlineByHid(Integer hid) {
    Result result = headlineService.findHeadlineByHid(hid);
    return result;
}

/**
* 根据id查询详情
* @param hid
* @return
*/
@Override
public Result findHeadlineByHid(Integer hid) {
    Headline headline = headlineMapper.selectById(hid);
    Map<String, Object> pageInfoMap = new HashMap<>();
    pageInfoMap.put("headline", headline);
    return Result.ok(pageInfoMap);
}

{
"code":"200",
"message":"success",
"data":{}
}

@PostMapping("update")
public Result update(@RequestBody Headline headline){
    Result result = headlineService.updateHeadLine(headline);
    return result;
}

/**
* 修改业务
* 1.查询version版本
* 2.补全属性,修改时间 , 版本!
*
* @param headline
* @return
*/
@Override
public Result updateHeadLine(Headline headline) {

    //读取版本
    Integer version = headlineMapper.selectById(headline.getHid()).getVersion();

    headline.setVersion(version);
    headline.setUpdateTime(new Date());

    headlineMapper.updateById(headline);

    return Result.ok(null);
}