一、準備工作,先創建一個文章表,用於存放書寫的文章
1、建表SQL:
CREATE TABLE `article` (
`id` int(10) NOT NULL AUTO_INCREMENT COMMENT 'int文章的唯一ID',
`author` varchar(50) NOT NULL COMMENT '作者',
`title` varchar(100) NOT NULL COMMENT '標題',
`content` longtext NOT NULL COMMENT '文章的內容',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
2、EasyCode自動生成代碼(可將除了實體類外所有生成的代碼刪除,我下面會給出必要的代碼)
3、ArticleDao接口下添加四個方法
@Mapper
public interface ArticleDao {
//查詢所有的文章
List<Article> queryArticles();
//新增一個文章
int addArticle(Article article);
//根據文章id查詢文章
Article getArticleById(int id);
//根據文章id刪除文章
int deleteArticleById(int id);
}
4、對應的mapper文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.kk.dao.ArticleDao">
<resultMap type="com.kk.entity.Article" id="ArticleMap">
<result property="id" column="id" jdbcType="INTEGER"/>
<result property="author" column="author" jdbcType="VARCHAR"/>
<result property="title" column="title" jdbcType="VARCHAR"/>
<result property="content" column="content" jdbcType="VARCHAR"/>
</resultMap>
<!--根據id查詢單個文章-->
<select id="getArticleById" resultMap="ArticleMap">
select
id, author, title, content
from bookstore.article
where id = #{id}
</select>
<!--查詢所有文章-->
<select id="queryArticles" resultMap="ArticleMap">
select
id, author, title, content
from bookstore.article
<where>
<if test="id != null">
and id = #{id}
</if>
<if test="author != null and author != ''">
and author = #{author}
</if>
<if test="title != null and title != ''">
and title = #{title}
</if>
<if test="content != null and content != ''">
and content = #{content}
</if>
</where>
</select>
<!--添加文章-->
<insert id="addArticle" keyProperty="id" useGeneratedKeys="true">
insert into bookstore.article(author, title, content)
values (#{author}, #{title}, #{content})
</insert>
<!--通過id刪除文章-->
<delete id="deleteArticleById">
delete from bookstore.article where id = #{id}
</delete>
</mapper>
5、同樣ArticleService接口實現對應的方法
public interface ArticleService {
//查詢所有的文章
List<Article> queryArticles();
//新增一個文章
int addArticle(Article article);
//根據文章id查詢文章
Article getArticleById(int id);
//根據文章id刪除文章
int deleteArticleById(int id);
}
6、ArticleServiceImpl實現
@Service("articleService")
public class ArticleServiceImpl implements ArticleService {
@Resource
private ArticleDao articleDao;
@Override
public List<Article> queryArticles() {
return articleDao.queryArticles();
}
@Override
public int addArticle(Article article) {
return articleDao.addArticle(article);
}
@Override
public Article getArticleById(int id) {
return articleDao.getArticleById(id);
}
@Override
public int deleteArticleById(int id) {
return articleDao.deleteArticleById(id);
}
}
7、ArticleController
@Controller
@RequestMapping("article")
public class ArticleController {
@Resource
private ArticleService articleService;
/**
* 添加文章
* @param article
* @return
*/
@PostMapping("/addArticle")
public String addArticle(Article article) {
articleService.addArticle(article);
return "editor/editormd";
}
}
二、到官網下載MarkDown的資源包
MarkDown官網
在項目resources/static目錄下創建一個editormd目錄、resources/templates下創建一個editor目錄(因爲隨着項目的擴展,大量的css和js資源混雜,所以建議每個功能模塊的靜態資源都建一個專門的目錄存放,然後改寫js和css等資源的路徑的時候,記得加上目錄名)
在templates的editor目錄下新建一個editormd.html文件(作爲編輯頁面),將資源包的simple.html內容拷貝進去,然後先將下面提到的兩個css和兩個js靜態資源,在資源包中找到之後,導入static的editormd目錄下,然後用th命名空間改寫editormd.html文件的js和css的引入,還要導入整個資源包下的lib包,導入plugins包,。
<link rel="stylesheet" th:href="@{/editormd/css/style.css}" />
<link rel="stylesheet" th:href="@{/editormd/css/editormd.css}"/>
<script th:src="@{/editormd/js/jquery.min.js}"></script>
<script th:src="@{/editormd/js/editormd.min.js}"></script>
還要改寫editormd.html中的function內容的path
$(function() {
testEditor = editormd("test-editormd", {
width: "90%",
height: 640,
syncScrolling: "single",
path: "../editormd/lib/"
});
});
editormd.html
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8" />
<title>Simple example - Editor.md examples</title>
<link rel="stylesheet" th:href="@{/editormd/css/style.css}"/>
<link rel="stylesheet" th:href="@{/editormd/css/editormd.css}"/>
<link rel="shortcut icon" href="https://pandao.github.io/editor.md/favicon.ico" type="image/x-icon" />
</head>
<body>
<div id="layout">
<header>
<h1>Simple example</h1>
</header>
<div id="test-editormd">
<textarea style="display:none;"></textarea>
</div>
</div>
<script th:src="@{/editormd/js/jquery.min.js}"></script>
<script th:src="@{/editormd/js/editormd.min.js}"></script>
<script type="text/javascript">
var testEditor;
$(function() {
testEditor = editormd("test-editormd", {
width: "90%",
height: 640,
syncScrolling: "single",
emoji: true,
path: "../editormd/lib/"
});
});
</script>
</body>
</html>
然後添加一個controller跳轉過去,訪問http://localhost:8080/article/toEditor啓動測試一波
@GetMapping("/toEditor")
public String toEditor(){
return "editormd/editormd";
}
調試發現,還需要這些靜態資源
一個個解決
先到資源包找到loading.gif加入到resources/static/editormd目錄中images目錄下
再把字體包fonts整個導入到resources/static/editormd下
目錄結構如圖
再測試,此時已無缺失的靜態資源
然後一個功能一個功能測試過來,
只有上傳圖片功能沒有起作用
接下來實現圖片上傳功能
先到function中追加圖片上傳的配置
$(function() {
testEditor = editormd("test-editormd", {
width: "90%",
height: 640,
syncScrolling: "single",
path: "../editormd/lib/",
//圖片上傳
imageUpload : true,
imageFormats : ["jpg", "jpeg", "gif", "png", "bmp", "webp"],
imageUploadURL : "/file/upload"
});
});
然後到controller中添加一個controller處理上傳
//博客圖片上傳問題
@RequestMapping("/file/upload")
@ResponseBody
public JSONObject fileUpload(@RequestParam(value = "editormd-image-file", required = true) MultipartFile file, HttpServletRequest request) throws IOException {
//上傳路徑保存設置
//獲得SpringBoot當前項目的路徑:System.getProperty("user.dir")
String path = System.getProperty("user.dir")+"/upload/";
//按照月份進行分類:
Calendar instance = Calendar.getInstance();
String month = (instance.get(Calendar.MONTH) + 1)+"月";
path = path+month;
File realPath = new File(path);
if (!realPath.exists()){
realPath.mkdirs();
}
//上傳文件地址
System.out.println("上傳文件保存地址:"+realPath);
//解決文件名字問題:我們使用uuid;
String filename = "pg-"+ UUID.randomUUID().toString().replaceAll("-", "")+".jpg";
File newfile = new File(realPath, filename);
//通過CommonsMultipartFile的方法直接寫文件(注意這個時候)
file.transferTo(newfile);
//給editormd進行回調
JSONObject res = new JSONObject();
res.put("url","/upload/"+month+"/"+ filename);
res.put("success", 1);
res.put("message", "upload success!");
return res;
}
增加一個適配器配置類,在該配置類中定義虛擬路徑和真實的物理路徑的映射關係。(目的:文件在物理路徑下,但是物理路徑畢竟過長,不簡潔,通過配置適配器,映射到簡潔的地址)
適配器友情鏈接
@Configuration
public class MyMvcConfig implements WebMvcConfigurer {
// 文件保存在真實物理路徑/upload/下(即項目的物理地址下:F:\IDEA_Project_Location\自己\bookstore\upload\3月)
// 訪問的時候使用虛路徑/upload,比如文件名爲1.png,就直接/upload/1.png就ok了。
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
//將物理地址upload下的文件映射到/upload下
//訪問的時候就直接訪問http://localhost:9000/upload/文件名
registry.addResourceHandler("/upload/**")
.addResourceLocations("file:"+System.getProperty("user.dir")+"/upload/");
}
}
可以達到以下效果(重點在路徑)
最後就是查看文章的頁面了
先在數據庫中添加一條文章記錄
INSERT INTO `article` VALUES ('1', 'kk', '我愛你', '## 走在漆黑的夜裏');
在resources/template/editormd下創建一個article.html頁面,作爲查看頁面
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<title th:text="${article.title}"></title>
</head>
<body>
<div>
<!--文章主體內容-->
<div id="doc-content" style="width: 80%">
<textarea style="display:none;" placeholder="markdown" th:text="${article.content}"></textarea>
</div>
</div>
<link rel="stylesheet" th:href="@{/editormd/css/editormd.preview.css}" />
<script th:src="@{/editormd/lib/jquery.min.js}"></script>
<script th:src="@{/editormd/lib/marked.min.js}"></script>
<script th:src="@{/editormd/lib/prettify.min.js}"></script>
<script th:src="@{/editormd/lib/raphael.min.js}"></script>
<script th:src="@{/editormd/lib/underscore.min.js}"></script>
<script th:src="@{/editormd/lib/sequence-diagram.min.js}"></script>
<script th:src="@{/editormd/lib/flowchart.min.js}"></script>
<script th:src="@{/editormd/lib/jquery.flowchart.min.js}"></script>
<script th:src="@{/editormd/lib/editormd.min.js}"></script>
<script type="text/javascript">
var testEditor;
$(function () {
testEditor = editormd.markdownToHTML("doc-content", {//注意:這裏是上面DIV的id
htmlDecode: "style,script,iframe",
emoji: true,
taskList: true,
tocm: true,
tex: true, // 默認不解析
flowChart: true, // 默認不解析
sequenceDiagram: true, // 默認不解析
codeFold: true
});
});
</script>
</body>
</html>
寫一個controller跳轉到article頁面
@GetMapping("/show")
public String show(Model model) {
Article article = articleService.getArticleById(1);
model.addAttribute("article", article);
return "editor/article";
}
http://localhost:8080/article/show
測試成功!