基于javaweb+mysql的springboot+mybatis新闻管理系统(java+html+springboot+javabean+mysql+tomcat+maven)

以下是一个简化的Spring Boot + MyBatis新闻管理系统的核心代码示例。

实体类（News.java）

public class News {
    private Integer id;
    private String title;
    private String content;
    // 省略getter和setter方法
}

Mapper接口（NewsMapper.java）

@Mapper
public interface NewsMapper {
    List<News> selectAllNews();
    News selectNewsById(Integer id);
    int insertNews(News news);
    int updateNews(News news);
    int deleteNews(Integer id);
}

Mapper XML（NewsMapper.xml）

<mapper namespace="com.example.demo.mapper.NewsMapper">
    <select id="selectAllNews" resultType="News">
        SELECT * FROM news
    </select>
    <select id="selectNewsById" resultType="News">
        SELECT * FROM news WHERE id = #{id}
    </select>
    <insert id="insertNews">
        INSERT INTO news(title, content) VALUES(#{title}, #{content})
    </insert>
    <update id="updateNews">
        UPDATE news SET title = #{title}, content = #{content} WHERE id = #{id}
    </update>
    <delete id="deleteNews">
        DELETE FROM news WHERE id = #{id}
    </delete>
</mapper>

服务接口（NewsService.java）

public interface NewsService {
    List<News> getAllNews();
    News getNewsById(Integer id);
    void saveNews(News news);
    void updateNews(News news);
    void deleteNews(Integer id);
}

服务实现类（NewsServiceImpl.java）

@Service
public class NewsServiceImpl implements NewsService {
    @Autowired
    private NewsMapper newsMapper;
 
    @Override
    public List<News> getAllNews() {
        return newsMapper.selectAllNews();
    }
 
    @Override
    public News getNewsById(Integer id) {
        return newsMapper.selectNewsById(id);
    }
 
    @Override
    public void saveNews(News news) {
        newsMapper.insertNews(news);
    }
 
    @Override
    public void updateNews(News news) {
        newsMapper.updateNews(news);
    }
 
    @Override
    public void deleteNews(Integer id) {
        newsMapper.deleteNews(id);
    }
}

控制器（NewsController.java）

@RestController
@RequestMapping("/news")
public class NewsController {
    @Autowired
    private NewsService newsService;
 
    @GetMapping("/")
    public List<News> getAllNews() {
        return newsService.getAllNews();
    }
 
    @GetMapping("/{id}")
    public News getNewsById(@PathVariable Integer id) {
        return newsService.getNewsById(id);
    }
 
    @PostMapping("/")
    public void saveNews(@R