草庐IT

码匠社区学习笔记(三)

Mr_wa7 2023-04-05 原文

所需资料

功能主体说明：

  1. 问题编辑与删除
  2. 引入markdown插件
  3. mybatis-plus 的创建时间和修改时间自动生成

项目目录

登录后点击我的问题跳转到自己发布的问题页面

navigation.html

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<body>
<div class="container-fluid" th:fragment="navigation">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
        <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
            <span class="sr-only">码匠社区</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="/">码匠社区</a>
    </div>
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">

        <form class="navbar-form navbar-left">
            <div class="form-group">
                <input type="text" class="form-control" placeholder="搜索问题">
            </div>
            <button type="submit" class="btn btn-default">搜索</button>
        </form>

        <ul class="nav navbar-nav navbar-right">
            <li th:if="${session.user !=null}">
                <a href="/publish" class="btn btn-default">发布</a>
            </li>
            <li class="dropdown" th:if="${session.user!=null}">
                <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
                   aria-expanded="false">
                    <span th:text="${session.user.getFdName()}"></span>
                    <span class="caret"></span>
                </a>
                <ul class="dropdown-menu">
                    <li><a href="/profile/question">我的问题</a></li>
                    <li><a href="#">退出登录</a></li>
                </ul>
            </li>
            <li th:if="${session.user==null}"><a
                    th:href="@{'https://gitee.com/oauth/authorize'+'?client_id='+${client_id}+'&redirect_uri='+${redirect_uri}+'&response_type=code&state=1'}">登录</a>
            </li>
        </ul>
    </div>
</div>
</body>
</html>

index.html

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <title>码匠问题社区</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
    <!--<script src="http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js"></script>-->
    <!--<script type="text/javascript" src="/js/jquery.js"></script>-->
    <link rel="stylesheet" href="/css/bootstrap.min.css"/>
    <link rel="stylesheet" href="/css/community.css"/>
    <script src="/js/jquery.min.js"></script>
    <script src="/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="/css/bootstrap-theme.min.css"/>

</head>
<body>
<nav class="navbar navbar-default">
    <div class="container-fluid" th:replace="navigation::navigation"></div>
</nav>
<div class="container-fluid main">
    <div class="row">
        <div class="col-md-9 col-md-12 col-sm-12 col-xs-12">
            <h2><span class="glyphicon glyphicon-list"/>发现</h2>
            <hr>
            <div class="media" th:each="questionDTO :${questionPageList.getList()}">
                <div class="media-left">
                    <a href="#">
                        <img class="img-rounded"
                             th:src="${questionDTO.user.getAvatarUrl()}">
                    </a>
                </div>
                <div class="media-body">
                    <h4 class="media-heading">
                        <a th:href="@{'/question/'+${questionDTO.getId()}}" th:text="${questionDTO.getTitle()}"></a>
                    </h4>
                    <span th:text="${questionDTO.tag}"></span><br>
                    <span class="text-desc">
                        • <span th:text="${questionDTO.getUser().getFdName()}"></span>发表了文章
                        • <span th:text="${questionDTO.getCommentCount()}"></span> 个评论
                        • <span th:text="${questionDTO.getLikeCount()}"></span> 次浏览
                        •<span th:text="${#dates.format(questionDTO.getGmtCreate(),'yyyy-MM-dd')}"></span>发布
                    </span>
                </div>
            </div>
            <nav aria-label="Page navigation">
                <ul class="pagination">
                    <li th:if="${questionPageList.getCurrPage()!=1}">
                        <a th:href="@{/(current=1,size=${questionPageList.getPageSize()})}" aria-label="Previous">
                            <span aria-hidden="true">&lt;&lt;</span><!--首页-->
                        </a>
                    </li>
                    <li th:if="${questionPageList.getCurrPage()!=1}">
                        <a th:href="@{/(current=${questionPageList.getCurrPage()-1},size=${questionPageList.getPageSize()})}" aria-label="Previous">
                            <span aria-hidden="true">&lt;</span><!--上一页-->
                        </a>
                    </li>
                    <li th:each="page:${questionPageList.getPageNumber()}" th:class="${questionPageList.getCurrPage()==page}?'active' : ''">
                        <a th:href="@{/(current=${page},size=${questionPageList.getPageSize()})}" th:text="${page}"></a>
                    </li>
                    <li th:if="${questionPageList.getCurrPage()!=questionPageList.getTotalPage()}">
                        <a th:href="@{/(current=${questionPageList.getCurrPage()+1},size=${questionPageList.getPageSize()})}" aria-label="Previous">
                            <span aria-hidden="true">&gt;</span><!--下一页-->
                        </a>
                    </li>
                    <li th:if="${questionPageList.getCurrPage()!=questionPageList.getTotalPage()}">
                        <a th:href="@{/(current=${questionPageList.getTotalPage()},size=${questionPageList.getPageSize()})}" aria-label="Previous">
                            <span aria-hidden="true">&gt;&gt;</span><!--尾页-->
                        </a>
                    </li>
                </ul>
            </nav>
        </div>
        <div class="col-md-3 col-md-12 col-sm-12 col-xs-12">
            <h3>问题发起指南</h3>
            • 问题标题: 请用精简的语言描述您发布的问题，不超过25字 <br>
            • 问题补充: 详细补充您的问题内容，并确保问题描述清晰直观, 并提供一些相关的资料<br>
            • 选择标签: 选择一个或者多个合适的标签，用逗号隔开，每个标签不超过10个字<br>
        </div>
    </div>
</div>
</body>
</html>

ProfileController

package com.majiang.community.controller;

import com.majiang.community.model.User;
import com.majiang.community.service.IQuestionService;
import com.majiang.community.util.CookieUtil;
import com.majiang.community.util.PageUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpServletRequest;

/**
 * @date 2022-04-28
 */
@Controller
public class ProfileController {

    @Autowired(required = false)
  private IQuestionService questionService;

    @GetMapping("profile/{action}")
    public String profile(@RequestParam(name="current",defaultValue = "0") int current,
                          @RequestParam(name="size",defaultValue = "4")int size,
                          @PathVariable(name = "action")String action,
                          HttpServletRequest request,
                          Model model){
        User user = (User) request.getSession().getAttribute("user");
        //cookie已经过期
        if(user==null){
            return "redirect:/";
        }
        //获取我的问题列表
        if("question".equals(action)){
            PageUtils myQuestionPage= questionService.selectMyQuestion(current,size,user);
            model.addAttribute("sectionName", "问题列表");
            model.addAttribute("section", "question");
            model.addAttribute("myQuestionPage", myQuestionPage);
        }
        //获取我的回复列表
        if("reply".equals(action)){
            model.addAttribute("action", "回复列表");
        }
        return "profile";
    }
}

具体实现 QuestionServiceImp

package com.majiang.community.service.spring;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.majiang.community.dto.QuestionDTO;
import com.majiang.community.mapper.QuestionMapper;
import com.majiang.community.mapper.UserMapper;
import com.majiang.community.model.Question;
import com.majiang.community.model.User;
import com.majiang.community.service.IQuestionService;
import com.majiang.community.util.CookieUtil;
import com.majiang.community.util.PageUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import java.util.ArrayList;
import java.util.List;

/**
 * @date 2022-04-22
 */
@Service
public class QuestionServiceImp extends ServiceImpl<QuestionMapper,Question> implements IQuestionService {

    @Autowired(required = false)
    QuestionMapper questionMapper;
     @Autowired(required = false)
    UserMapper userMapper;

    @Override
    public List<QuestionDTO> getQuestionList() {
        List<QuestionDTO> questionDTOList=new ArrayList<>();
        List<Question> questionList = questionMapper.selectList(null);
        for(Question question:questionList){
            QueryWrapper<User> userQueryWrapper = new QueryWrapper<>();
            userQueryWrapper.eq("fd_account_id", question.getCreator());
            User user = userMapper.selectOne(userQueryWrapper);
            QuestionDTO questionDTO = new QuestionDTO();
            BeanUtils.copyProperties(question, questionDTO);
            questionDTO.setUser(user);
            questionDTOList.add(questionDTO);
        }
        return questionDTOList;
    }

    @Override
    public PageUtils getQuestionPage(int current, int size) {
        Page page=new Page(current,size);
        //查询出所有的问题列表
        IPage iPage = questionMapper.selectPage(page, null);
        List<Question>  questionList= iPage.getRecords();
        //
        List<QuestionDTO> questionDTOList=new ArrayList<>();
        for (Question question:questionList){
            QueryWrapper<User> userQueryWrapper = new QueryWrapper<>();
            userQueryWrapper.eq("fd_account_id", question.getCreator());
            User user = userMapper.selectOne(userQueryWrapper);
            QuestionDTO questionDTO = new QuestionDTO();
            BeanUtils.copyProperties(question, questionDTO);
            questionDTO.setUser(user);
            questionDTOList.add(questionDTO);
        }
        iPage.setRecords(questionDTOList);
        return new PageUtils(iPage);
    }

    @Override
    public PageUtils selectMyQuestion(int current, int size, User user) {
        Page page=new Page(current,size);
        QueryWrapper<Question> questionQueryWrapper = new QueryWrapper<>();
        questionQueryWrapper.eq("creator", user.getFdAccountId());
        IPage iPage = questionMapper.selectPage(page, questionQueryWrapper);
        return new  PageUtils(iPage);
    }

    @Override
    public QuestionDTO getQuestionById(String id) {
        Question question = questionMapper.selectById(id);
        QueryWrapper<User> userQueryWrapper = new QueryWrapper<>();
        userQueryWrapper.eq("fd_account_id", question.getCreator());
        User user = userMapper.selectOne(userQueryWrapper);
        QuestionDTO questionDTO = new QuestionDTO();
        BeanUtils.copyProperties(question, questionDTO);
        questionDTO.setUser(user);
        return questionDTO;
    }

    @Override
    public void updateQuestion(QuestionDTO questionDTO) {
        Question question=new Question();
        BeanUtils.copyProperties(questionDTO, question);
        int i = questionMapper.updateById(question);
        System.out.println("修改了"+i);
    }

    @Override
    public void deleteQuestion(String id) {
        questionMapper.deleteById(id);
    }

    @Override
    public void addQuestion(QuestionDTO questionDTO, HttpServletRequest request) {
        String cookieValue = CookieUtil.getCookieValue(request);
        QueryWrapper queryWrapper=new QueryWrapper();
        queryWrapper.eq("fd_token", cookieValue);
        User user = userMapper.selectOne(queryWrapper);
        Question question=new Question();
        BeanUtils.copyProperties(questionDTO, question);
        question.setCreator(user.getFdAccountId());
        questionMapper.insert(question);
    }
}


profile.html

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <title>码匠问题社区</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
    <!--<script src="http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js"></script>-->
    <!--<script type="text/javascript" src="/js/jquery.js"></script>-->
    <link rel="stylesheet" href="/css/bootstrap.min.css"/>
    <link rel="stylesheet" href="/css/community.css"/>
    <script src="/js/jquery.min.js"></script>
    <script src="/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="/css/bootstrap-theme.min.css"/>

</head>
<body>
<nav class="navbar navbar-default">
    <div class="container-fluid" th:replace="navigation::navigation"></div>
</nav>
<div class="container-fluid main">
    <div class="row">
        <div class="col-md-9 col-md-12 col-sm-12 col-xs-12">
            <h2><span class="glyphicon glyphicon-list" th:text="${sectionName}"/></h2>
            <hr>
            <div class="media" th:each="questionDTO :${myQuestionPage.getList()}">
                <div class="media-body">
                    <a th:href="@{'/question/'+${questionDTO.getId()}}" th:text="${questionDTO.getTitle()}"></a>
                   <!-- <h4 class="media-heading" th:text="${questionDTO.getTitle()}"></h4>-->
                    <br>
                    <span th:text="${questionDTO.tag}"></span><br>
                    <span class="text-desc">
                        • <span th:text="${questionDTO.getCommentCount()}"></span> 个评论
                        • <span th:text="${questionDTO.getLikeCount()}"></span> 次浏览
                        •<span th:text="${#dates.format(questionDTO.getGmtCreate(),'yyyy-MM-dd')}"></span>发布
                    </span>
                </div>
            </div>
            <nav aria-label="Page navigation">
                <ul class="pagination">
                    <li th:if="${myQuestionPage.getCurrPage()!=1}">
                        <a th:href="@{'/profile/'+${section}(current=1,size=${myQuestionPage.getPageSize()})}" aria-label="Previous">
                            <span aria-hidden="true">&lt;&lt;</span><!--首页-->
                        </a>
                    </li>
                    <li th:if="${myQuestionPage.getCurrPage()!=1}">
                        <a th:href="@{'/profile/'+${section}(current=${myQuestionPage.getCurrPage()-1},size=${myQuestionPage.getPageSize()})}" aria-label="Previous">
                            <span aria-hidden="true">&lt;</span><!--上一页-->
                        </a>
                    </li>
                    <li th:each="page:${myQuestionPage.getPageNumber()}" th:class="${myQuestionPage.getCurrPage()==page}?'active' : ''">
                        <a th:href="@{'/profile/'+${section}(current=${page},size=${myQuestionPage.getPageSize()})}" th:text="${page}"></a>
                    </li>
                    <li th:if="${myQuestionPage.getCurrPage()!=myQuestionPage.getTotalPage()}">
                        <a th:href="@{'/profile/'+${section}(current=${myQuestionPage.getCurrPage()+1},size=${myQuestionPage.getPageSize()})}" aria-label="Previous">
                            <span aria-hidden="true">&gt;</span><!--下一页-->
                        </a>
                    </li>
                    <li th:if="${myQuestionPage.getCurrPage()!=myQuestionPage.getTotalPage()}">
                        <a th:href="@{'/profile/'+${section}(current=${myQuestionPage.getTotalPage()},size=${myQuestionPage.getPageSize()})}" aria-label="Previous">
                            <span aria-hidden="true">&gt;&gt;</span><!--尾页-->
                        </a>
                    </li>
                </ul>
            </nav>
        </div>
        <div class="col-md-3 col-md-12 col-sm-12 col-xs-12">
            <ul class="nav nav-pills nav-stacked">
                <li role="presentation" th:class="${section=='question'}?'active':''">
                    <a href="/profile/question">我的问题
                        <span class="badge" th:text="${myQuestionPage.getTotalCount()}"/>
                    </a>
                </li>
                <li role="presentation" th:class="${section=='reply'}?'active':''">
                    <a href="/profile/reply">我的回复</a>
                </li>
            </ul>
        </div>
    </div>
</div>
</body>
</html>

问题详情


实现类代码上面已展示，这里省略。。。。

引入md

md下载

question.html

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <title>码匠问题社区</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
    <!--<script src="http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js"></script>-->
    <!--<script type="text/javascript" src="/js/jquery.js"></script>-->
    <link rel="stylesheet" href="/css/bootstrap.min.css"/>
    <link rel="stylesheet" href="/css/community.css"/>
    <script src="/js/jquery.min.js"></script>
    <script src="/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="/css/bootstrap-theme.min.css"/>
    <link rel="stylesheet" href="/css/editormd.min.css">
    <link rel="stylesheet" href="/css/editormd.preview.min.css">
    <script src="/js/editormd.min.js" type="application/javascript"></script>
    <script src="/js/moment.js" type="application/javascript"></script>
    <script src="/js/lib/marked.min.js"></script>
    <script src="/js/lib/prettify.min.js"></script>
</head>
<body>
<nav class="navbar navbar-default">
    <div class="container-fluid" th:replace="navigation::navigation"></div>
</nav>
<div class="container-fluid main">
    <div class="row">
        <div class="col-md-9 col-md-12 col-sm-12 col-xs-12">
            <br>
            <h4 class="media-heading" th:text="${questionDTO.getTitle()}"></h4>
            <span class="text-desc">
                作者&nbsp;<span th:text="${questionDTO.getUser().getFdName()}"></span>|
                发布于&nbsp;<span th:text="${#dates.format(questionDTO.getGmtCreate(),'yyyy-MM-dd')}"></span>|
                阅读数:&nbsp;<span th:text="${questionDTO.getLikeCount()}"></span>
            </span>
            <hr>
            <!--内容-->
            <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12" id="question-view">
                <textarea style="display:none;" th:text="${questionDTO.getDescription()}"></textarea>
            </div>
            <script type="text/javascript">
                $(function () {
                    editormd.markdownToHTML("question-view", {});
                });
            </script>

            <hr class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
            <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
                <!--编辑-->
                <a th:href="@{'/publish/'+${questionDTO.id}}" class="community-menu"
                   th:if="${session.user != null && session.user.fdId == questionDTO.creator}">
                    <span class="glyphicon glyphicon-edit" aria-hidden="true">编辑</span>
                </a>
                <span>&nbsp;&nbsp;</span>
                <!--删除(TODO)-->
                <a th:href="@{'/publish/delete/'+${questionDTO.id}}" class="community-menu"
                   th:if="${session.user != null && session.user.fdId == questionDTO.creator}">
                    <span class="glyphicon glyphicon-remove" aria-hidden="true">删除</span>
                </a>
            </div>
            <hr class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
        </div>
        <div class="col-md-3 col-md-12 col-sm-12 col-xs-12">
            <div class="col-md-12 col-md-12 col-sm-12 col-xs-12">
                <h4>发起人</h4>
                <div class="media">
                <div class="media-left">
                    <a href="#">
                        <img class="media-object img-rounded" th:src="${questionDTO.getUser().getAvatarUrl()}">
                    </a>
                </div>
                <div class="media-body">
                    <h4 class="media-heading">
                        <span th:text="${questionDTO.getUser().getFdName()}"></span>
                    </h4>
                </div>
            </div>
            </div>
            <hr class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
            <div class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
                <h4>相关问题</h4>
                <ul class="question-related">
                    <!--<li th:each="related : ${relatedQuestions}">
                        <a th:href="@{'/question/'+ ${related.id}}" th:text="${related.title}"></a>
                    </li>-->
                </ul>
            </div>
        </div>
    </div>
</div>
</body>
</html>

PublishController

package com.majiang.community.controller;

import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.majiang.community.dto.QuestionDTO;
import com.majiang.community.mapper.QuestionMapper;
import com.majiang.community.mapper.UserMapper;
import com.majiang.community.model.Question;
import com.majiang.community.model.User;
import com.majiang.community.service.IQuestionService;
import com.majiang.community.util.CookieUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpServletRequest;

/**
 * @date 2022-04-21
 */
@Controller
public class PublishController {
    @Autowired(required = false)
    private QuestionMapper questionMapper;
    @Autowired(required = false)
    private UserMapper userMapper;

    @Autowired
    private IQuestionService questionService;

    @GetMapping("/publish")
    public String createQuestion(Model model,
                                 HttpServletRequest request){
        String cookieValue = CookieUtil.getCookieValue(request);
        if(StrUtil.isEmpty(cookieValue)){
            return "index";
        }
        QuestionDTO questionDTO=new QuestionDTO();
        model.addAttribute("questionDTO", questionDTO);
        return "publish";
    }

    @PostMapping("/publish")
    public String saveQuestion(@RequestParam(name = "title")String title,
                               @RequestParam(name="description")String description,
                               @RequestParam(name = "tag")String tag,
                               @RequestParam(name = "id",required = false)String id,
                               HttpServletRequest request,
                               Model model){
        QuestionDTO questionDTO=new QuestionDTO();
        questionDTO.setTitle(title);
        questionDTO.setDescription(description);
        questionDTO.setTag(tag);
        if(StrUtil.isNotEmpty(id)){
            questionDTO.setId(id);
        }
        model.addAttribute("questionDTO", questionDTO);
        if(StrUtil.isEmpty(title)){
            model.addAttribute("error", "标题不能为空");
            return "publish";
        }
        if(StrUtil.isEmpty(description)){
            model.addAttribute("error", "问题描述不能为空");
            return "publish";
        }
        if(StrUtil.isEmpty(tag)){
            model.addAttribute("error", "标签不能为空");
            return "publish";
        }
        if(StrUtil.isNotEmpty(id)){
            questionService.updateQuestion(questionDTO);
        }else{
            questionService.addQuestion(questionDTO,request);
        }

        return "redirect:/";
    }
    /**
     * 编辑问题
     */
    @GetMapping("publish/{id}")
    public String editQuestion(@PathVariable(name = "id")String id,
                               Model model){
        //TODO 鉴定用户是否有权限修改
        QuestionDTO questionDTO = questionService.getQuestionById(id);
        model.addAttribute("questionDTO",questionDTO);
        return "publish";
    }

    /**
     * 删除问题
     */
    @GetMapping("publish/delete/{id}")
    public String deleteQuestion(@PathVariable(name = "id")String id){
        //TODO 鉴定用户是否有权限删除
        questionService.deleteQuestion(id);
        return "redirect:/profile/question";
    }

}

questionService实现类代码上面已展示，这里省略。。。。

publish.html

<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>

    <title>码匠问题社区</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <link rel="stylesheet" href="/css/bootstrap.min.css" />
    <link rel="stylesheet" href="/css/community.css">
    <script src="/js/jquery.min.js"></script>
    <script src="/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="/css/bootstrap-theme.min.css"/>
    <link rel="stylesheet" href="/css/editormd.min.css">
    <link rel="stylesheet" href="/css/editormd.preview.min.css">
    <script src="/js/editormd.min.js" type="application/javascript"></script>
    <script src="/js/moment.js" type="application/javascript"></script>
    <script src="/js/lib/marked.min.js"></script>
    <script src="/js/lib/prettify.min.js"></script>
</head>
<body>
<nav class="navbar navbar-default">
    <div class="container-fluid" th:replace="navigation::navigation"></div>
</nav>
<div class="container-fluid main">
    <div class="row">
        <div class="col-md-9 col-md-12 col-sm-12 col-xs-12">
            <h2><span class="glyphicon glyphicon-plus"/>发起</h2>
            <hr>
            <form action="/publish" method="post">

                <input type="hidden" name="id" th:value="${questionDTO.getId()}">
                <div class="form-group">
                    <label for="title">问题标题（简单扼要）:</label>
                    <input type="text" class="form-control" th:value="${questionDTO.getTitle()}" id="title" name="title"
                           placeholder="问题标题……"
                           autocomplete="off">
                </div>
                <div class="form-group" id="question-editor" style="z-index: 2">
                    <label for="description">问题补充 (必填，请参照右侧提示):</label>
                    <textarea name="description" id="description" th:text="${questionDTO.description}" style="display:none;"
                              class="form-control"
                              cols="30"
                              rows="10"></textarea>
                </div>
                <div class="form-group">
                    <label for="title">添加标签:</label>
                    <input type="text" class="form-control" th:value="${questionDTO.getTag()}" id="tag" name="tag"
                           placeholder="问题标题……">
                </div>
                <div class="container-fluid main ">
                    <div class="row">
                        <div class="col-lg-9 col-md-12 col-sm-12 col-xs-12">
                            <div class="alert alert-danger col-lg-12 col-md-12 col-sm-12 col-xs-12"
                                 th:text="${error}"
                                 th:if="${error != null}">
                            </div>
                        </div>
                        <div class="col-lg-3 col-md-12 col-sm-12 col-xs-12">
                            <button type="submit" class="btn btn-success btn-publish ">
                                发布
                            </button>
                        </div>
                    </div>
                </div>
            </form>
        </div>
        <div class="col-md-3 col-md-12 col-sm-12 col-xs-12">
            <h3>问题发起指南</h3>
            • 问题标题: 请用精简的语言描述您发布的问题，不超过25字 <br>
            • 问题补充: 详细补充您的问题内容，并确保问题描述清晰直观, 并提供一些相关的资料<br>
            • 选择标签: 选择一个或者多个合适的标签，用逗号隔开，每个标签不超过10个字<br>
        </div>
    </div>
</div>
<script type="text/javascript">
    $(function () {
        var editor = editormd("question-editor", {
            width: "100%",
            height: 350,
            path: "/js/lib/",
            delay: 0,
            watch: false,
            placeholder: "请输入问题描述",
            imageUpload: true,
            imageFormats: ["jpg", "jpeg", "gif", "png", "bmp", "webp"],
            imageUploadURL: "/file/upload",
        });
    });
</script>
</body>
</html>

mybatis-plus创建时间和修改时间自动生成

package com.majiang.community.model;

import com.baomidou.mybatisplus.annotation.FieldFill;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import lombok.Data;

/**
 * @date 2022-04-20
 */
@Data
public class User {
    @TableId(value = "fd_id",type = IdType.ID_WORKER_STR)
    private String fdId;
    /**
     * 姓名
     */
    private String fdName;
    /**
     * 登录名
     */
    private String login;
    /**
     * 账号id
     */
    private String fdAccountId;
    /**
     * 授权标识
     */
    private String fdToken;
    /**
     * 图片地址
     */
    private String avatarUrl;
    /**
     * 创建时间
     */
    @TableField(fill = FieldFill.INSERT)//INSERT代表只在插入时填充
    private Long gmtCreateTime;
    /**
     * 修改时间
     */
    @TableField(fill = FieldFill.INSERT_UPDATE)// INSERT_UPDATE 首次插入、其次更新时填充(或修改)
    private Long gmtAlterTime;

}

创建MetaObjectHandler接口实现类即可，不用特意调用

package com.majiang.community.config;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;
/**
 * @date 2022-04-29
 */
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {
    @Override
    public void insertFill(MetaObject metaObject) {
        //属性名称，不是字段名称
        if(metaObject.hasSetter("gmtCreate")){
            this.setFieldValByName("gmtCreate", System.currentTimeMillis(), metaObject);
        }
        if(metaObject.hasSetter("gmtModified")){
            this.setFieldValByName("gmtModified", System.currentTimeMillis(), metaObject);
        }
        if(metaObject.hasSetter("gmtCreateTime")){
            this.setFieldValByName("gmtCreateTime", System.currentTimeMillis(), metaObject);
        }
        if(metaObject.hasSetter("gmtAlterTime")){
            this.setFieldValByName("gmtAlterTime", System.currentTimeMillis(), metaObject);
        }

    }

    @Override
    public void updateFill(MetaObject metaObject) {
        if(metaObject.hasSetter("gmtModified")){
            this.setFieldValByName("gmtModified", System.currentTimeMillis(), metaObject);
        }
        if(metaObject.hasSetter("gmtAlterTime")){
            this.setFieldValByName("gmtAlterTime", System.currentTimeMillis(), metaObject);
        }
    }
}
笔记社区spanclasstoken学习$elasticsearch$java

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