springboot中thymeleaf实现新闻页面静态化

我就是我 2022-10-23 00:48 315阅读 0赞

**整体结构：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNTI2Ng_size_16_color_FFFFFF_t_70]

**1、实体类**

package com.hdit.domain;
    
    import lombok.AllArgsConstructor;
    import lombok.Data;
    import lombok.NoArgsConstructor;
    import org.springframework.format.annotation.DateTimeFormat;
    
    import java.util.Date;
    
    /** * @基本功能: * @ClassName: News * @Description: TODO * @Author: lijiaming * @Date: 2021/3/17 15:43 * @Version 1.0 */
    @Data
    @AllArgsConstructor
    @NoArgsConstructor
    public class News { 
        private int id;
        private String newsId;
        private String newsTitle;
        private String newsContent;
        @DateTimeFormat(pattern = "yyyy-MM-dd")
        private Date    newsDate;
    }

**2、thymeleaf模板引擎（TemplateEngine）实现数据与模板组合。**

package com.hdit.util;
    
    import com.hdit.domain.News;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Component;
    import org.thymeleaf.TemplateEngine;
    import org.thymeleaf.context.Context;
    
    import java.io.FileWriter;
    import java.io.IOException;
    
    /** * @author Administrator * @version v1.0 * @className PageStaticUtil * @Date 2021/3/17 */
    @Component
    public class PageStaticUtil { 
    
        @Autowired
        private TemplateEngine  templateEngine;
    
        public  void  toHTML(News news){ 
    // thymeleaf上下文
            Context   context=new Context();
    // 设置数据
            context.setVariable("news",news);
    
    // 输出
            FileWriter   out=null;
            try { 
                out=new FileWriter("C:\\Users\\ljm\\Desktop\\news\\"+news.getNewsId()+".html");
                templateEngine.process("news.html",context,out);
            }catch (Exception  e){ 
    
            }finally { 
                try { 
                    out.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
    
        }
    
    }

**3、配置将生成的组合后的html文件分别存放在服务器下和本地。**

package com.hdit.config;
    
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
    
    /** * @author Administrator * @version v1.0 * @className PageStaticPathConfig * @Date 2021/3/17 */
    @Configuration
    public class PageStaticPathConfig implements WebMvcConfigurer{ 
            @Override
            public void addResourceHandlers(ResourceHandlerRegistry registry) { 
                registry.addResourceHandler("/news/**").addResourceLocations("file:C:/Users/ljm/Desktop/news/");
            }
    }

**4、controller层**

package com.hdit.controller;
    
    import com.hdit.domain.News;
    import com.hdit.service.NewService;
    import com.hdit.util.PageStaticUtil;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.ModelMap;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.PostMapping;
    
    import java.util.List;
    import java.util.UUID;
    
    /** * @基本功能: * @ClassName: NewsController * @Description: TODO * @Author: lijiaming * @Date: 2021/3/17 15:43 * @Version 1.0 */
    @Controller
    public class NewsController { 
        @Autowired
        private PageStaticUtil pageStaticUtil;
        @Autowired
        private NewService newService;
    
        @PostMapping("/addNews")
        public String addNews(News news){ 
            System.out.println("添加新闻！！！");
            news.setNewsId(UUID.randomUUID().toString());
            int i = newService.addNews(news);
            System.out.println(news);
            pageStaticUtil.toHTML(news);
            return "addNews.html";
        }
        @GetMapping("/findAllNews")
        public String findAllNews(ModelMap map){ 
            System.out.println("查找所有新闻！！！");
            List<News> news_list =  newService.findAllNews();
            System.out.println(news_list);
            map.addAttribute("news_list",news_list);
            return "showNews.html";
        }
    }

**5、service层**

**service.impl接口类**

package com.hdit.service;
    
    import com.hdit.domain.News;
    
    import java.util.List;
    
    
    public interface NewService { 
        public int  addNews(News news);
        public List<News> findAllNews();
     }

**service.impl实现类**

package com.hdit.service.impl;
    
    import com.hdit.domain.News;
    import com.hdit.mapper.NewsMapper;
    import com.hdit.service.NewService;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    
    /** * @基本功能: * @ClassName: NewsServiceImpl * @Description: TODO * @Author: lijiaming * @Date: 2021/3/17 15:44 * @Version 1.0 */
    @Service
    public class NewsServiceImpl implements NewService { 
        @Autowired
        private NewsMapper newsMapper;
        @Override
        public int addNews(News news) { 
            Map map = new HashMap();
            map.put("newsId",news.getNewsId());
            map.put("newsTitle",news.getNewsTitle());
            map.put("newsContent",news.getNewsContent());
            map.put("newsDate",news.getNewsDate());
            return newsMapper.addNews(map);
        }
        @Override
        public List<News> findAllNews() { 
            return newsMapper.findAllNews();
        }
    }

**6、mapper层**

package com.hdit.mapper;
    
    import com.hdit.domain.News;
    import org.apache.ibatis.annotations.Insert;
    import org.apache.ibatis.annotations.Select;
    import org.springframework.stereotype.Repository;
    import java.util.List;
    import java.util.Map;
    
    
    @Repository
    public interface NewsMapper { 
        @Insert("insert into news values(null,#{newsId},#{newsTitle},#{newsContent},#{newsDate})")
        public int  addNews(Map map);
        @Select("select * from news")
        public List<News> findAllNews();
    }

**7、springboot启动类**

package com.hdit;
    
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.context.annotation.ComponentScan;
    
    @SpringBootApplication
    @MapperScan("/com.hdit.mapper") //扫描mapper
    public class DemoApplication { 
        public static void main(String[] args) { 
            SpringApplication.run(DemoApplication.class, args);
        }
    
    }

**8、html模板**

**动态生成html页面模板：news.html**

<!DOCTYPE html>
    <html lang="en" xmlns:th="http://www.thymeleaf.org">
    <head>
        <meta charset="utf-8"/>
        <title>新闻内容</title>
    </head>
    <body>
    <h1>新闻内容</h1>
    <p th:text="${news.newsId}"></p>
    <p th:text="${news.newsTitle}"></p>
    <p th:text="${news.newsContent}"></p>
    <p th:text="${news.newsDate}"></p>
    </body>
    </html>

**查看所有新闻信息模板：showNews.html**

<!DOCTYPE html>
    <html lang="en" xmlns:th="http://www.thymeleaf.org">
    <head>
        <meta charset="utf-8"/>
        <title>新闻内容</title>
    </head>
    <body>
    <h1>新闻内容</h1>
    <table border="1" >
        <tr>
            <th>序号</th>
            <th>id</th>
            <th>新闻标题</th>
            <th>新闻内容</th>
            <th>时间</th>
            <th>查看详情信息</th>
        </tr>
        <tr th:each="news:${news_list}">
            <td th:text="${news.id}"></td>
            <td th:text="${news.newsId}"></td>
            <td th:text="${news.newsTitle}"></td>
            <td th:text="${news.newsContent}"></td>
            <td th:text="${news.newsDate}"></td>
            <td ><a th:href="'/SpringBootNews/news/'+${news.newsId}+'.html'">查看</a></td>
        </tr>
    </table>
    </body>
    </html>

**9、添加新闻信息页面：**

<!DOCTYPE html>
    <html lang="en">
    
    <head>
        <meta charset="utf-8"/>
        <title>添加新闻</title>
    </head>
    <body>
    <h1>添加新闻</h1>
    <form action="/SpringBootNews/addNews" method="post">
        新闻标题：<input type="text" name="newsTitle"/><br>
        新闻内容：<input type="text" name="newsContent"/><br>
        时 间：<input type="date" name="newsDate"/><br>
        <input type="submit" value="添加">
    </form>
    <form action="/SpringBootNews/findAllNews" method="get">
        <input type="submit" value="查看新闻"/>
    </form>
    </body>
    </html>

**10、application.yml配置文件：**

server:
      port: 8083
      servlet:
        context-path: /SpringBootNews
    spring:
      datasource:
        username: root
        password: 123456
        url: jdbc:mysql://localhost:3306/test?serverTimezone=UTC
        driver-class-name: com.mysql.cj.jdbc.Driver

**11、pom.xml依赖文件：**

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-thymeleaf</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>2.1.4</version>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <scope>runtime</scope>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <scope>runtime</scope>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>

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