基于javaweb的新闻管理系统(java+javaweb+jdbc)

m0_71054991

已于 2023-07-27 20:47:27 修改

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文章标签： java intellij-idea java-ee

于 2022-05-17 12:47:22 首次发布

本文链接：https://blog.youkuaiyun.com/m0_71054991/article/details/124819230

版权

这是一个用于课程设计的大作业，实现了登录、注册、新闻发布、管理等功能。代码中包含了新闻编辑、显示、隐藏、添加及分类管理等操作，适用于学习演示和项目练习。通过请求映射处理不同操作，如/toaddnews用于添加新闻，/edit用于编辑，/show用于设置栏目显示状态，/hidden用于隐藏栏目。同时，新闻控制层展示了如何处理用户登录后的新闻发布流程。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

功能介绍：
登录、注册、新闻发布、新闻管理、公告发布、用户管理、退出登录请添加图片描述

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

        request.setAttribute("list", newsList);
        return "listnews";
    }
    @RequestMapping("/toaddnews")
    public String toaddnews(){
        List<News> newsList = newsDao.queryAll();
        request.setAttribute("list", newsList);
        List<Category> categoryList = categoryDao.queryAll();
        request.setAttribute("categoryList", categoryList);
        return "addnews";
    }
    @RequestMapping("/edit")
    public String edit(){
        String title = request.getParameter("title");
        String content = request.getParameter("content");
        String categoryid = request.getParameter("categoryid");
        News news = new News();
        news.setCategoryid(Integer.parseInt(categoryid));
        news.setContent(content);
        news.setPbdate(new Date());
        news.setId(Integer.parseInt(request.getParameter("id")));
        news.setTitle(title);
        newsDao.edit(news);

        List<Category> categoryList = categoryDao.queryAll();
        request.setAttribute("list", categoryList);
        return "listcategory";
    }
    @RequestMapping("/show")
    public String show(){
        List<Category> categoryList = categoryDao.queryAll();
        categoryList=categoryList.stream().filter(x->x.getState().equals("1")).collect(Collectors.toList());
        if(categoryList.size()>=5)
        {
            request.setAttribute("list", categoryDao.queryAll());
            request.setAttribute("msg","设置栏目显示失败，前台栏目最多显示5个");
            return "listcategory";
        }else {
            categoryDao.show(Integer.parseInt(request.getParameter("id")));
            return "redirect:listforadmin";
        }
    }
    @RequestMapping("/hidden")
    public String hidden(){
        categoryDao.hidden(Integer.parseInt(request.getParameter("id")));
        return "redirect:listforadmin";
    }
    @RequestMapping("/add")
    public String add(){
        String name=request.getParameter("name");

}
新闻控制层：
@Controller
@RequestMapping("NewsServlet")
public class NewsController {
    @Autowired
    private HttpServletRequest request;
    private NewsDao newsDao = new NewsDao();
    private CategoryDao categoryDao = new CategoryDao();
    private CommentsDao commentsDao = new CommentsDao();
    @RequestMapping("/publish")
    public String publish(){
        String title = request.getParameter("title");
        String content = request.getParameter("content");
        String categoryid = request.getParameter("categoryid");
        Users users = (Users) request.getSession().getAttribute("loginUsers");
        Integer usersId = users.getId();
        Integer deptid = users.getDeptid();

    private NewsDao newsDao = new NewsDao();
    private CategoryDao categoryDao = new CategoryDao();
    private CommentsDao commentsDao = new CommentsDao();
    @RequestMapping("/publish")
    public String publish(){
        String title = request.getParameter("title");
        String content = request.getParameter("content");
        String categoryid = request.getParameter("categoryid");
        Users users = (Users) request.getSession().getAttribute("loginUsers");
        Integer usersId = users.getId();
        Integer deptid = users.getDeptid();
        News news = new News();
        news.setCategoryid(Integer.parseInt(categoryid));
        news.setClicks(0);
        news.setContent(content);
        news.setPbdate(new Date());
        news.setPbdeptid(deptid);
        news.setPublisher(usersId);
        news.setCategoryid(Integer.parseInt(categoryid));
        news.setTitle(title);
        newsDao.save(news);
        return "redirect:listforadmin";
    }
    @RequestMapping("/listforadmin")
    public String listforadmin(){
        List<News> newsList = newsDao.queryAll();

        String categoryid = request.getParameter("categoryid");
        List<News> newsList = newsDao.queryAll();
        request.setAttribute("list", newsList.stream()
                .filter(x -> x.getCategoryid().equals(Integer.parseInt(categoryid))).collect(Collectors.toList()));
        List<Category> categoryList = categoryDao.queryAll();
        request.setAttribute("categoryList",
                categoryList.stream().filter(x -> x.getState().equals("1")).collect(Collectors.toList()));
        return "typenews";
    }
    @RequestMapping("/detail")
    public String detail(){
        //测试
        String id =  request.getParameter("id");

        News news = newsDao.queryByid(Integer.parseInt(request.getParameter("id")));
        request.setAttribute("v", news);
        List<Category> categoryList = categoryDao.queryAll();
        request.setAttribute("categoryList", categoryList);
        return "editnews";
    }
    @RequestMapping("/queryByType")
    public String queryByType(){
        String categoryid = request.getParameter("categoryid");
        List<News> newsList = newsDao.queryAll();
        request.setAttribute("list", newsList.stream()
                .filter(x -> x.getCategoryid().equals(Integer.parseInt(categoryid))).collect(Collectors.toList()));
        List<Category> categoryList = categoryDao.queryAll();
        request.setAttribute("categoryList",
                categoryList.stream().filter(x -> x.getState().equals("1")).collect(Collectors.toList()));
        return "typenews";
    }
    @RequestMapping("/detail")
    public String detail(){
        //测试
        String id =  request.getParameter("id");
        if(id.contains(".jsp"))
        {
           id= request.getParameter("id").replaceAll(".jsp","");
        }

        String categoryid = request.getParameter("categoryid");
        Users users = (Users) request.getSession().getAttribute("loginUsers");
        Integer usersId = users.getId();
        Integer deptid = users.getDeptid();
        News news = new News();
        news.setCategoryid(Integer.parseInt(categoryid));
        news.setClicks(0);
        news.setContent(content);
        news.setPbdate(new Date());
        news.setPbdeptid(deptid);
        news.setPublisher(usersId);
        news.setCategoryid(Integer.parseInt(categoryid));
        news.setTitle(title);
        newsDao.save(news);
        return "redirect:listforadmin";
    }
    @RequestMapping("/listforadmin")
    public String listforadmin(){
        List<News> newsList = newsDao.queryAll();
        request.setAttribute("list", newsList);
        return "listnews";
    }
    @RequestMapping("/toaddnews")
    public String toaddnews(){

        String id =  request.getParameter("id");
        if(id.contains(".jsp"))
        {
           id= request.getParameter("id").replaceAll(".jsp","");
        }
        News news = newsDao.queryByid(Integer.parseInt(id));
        news.setClicks(news.getClicks() + 1);
        newsDao.setClicksIncrement(news);
        NewsDetail detail = new NewsDetail();
        detail.setNews(news);
        Category category = categoryDao.queryById(news.getCategoryid());
        detail.setCategory(category);
        String content = news.getContent();
        int length = content.length();
        length = length / 60;
        length = length * 27 + 10;
        request.setAttribute("length", length);
        request.setAttribute("v", detail);
        List<Category> categoryList = categoryDao.queryAll();

        newsList=	newsList.stream().map(x->{
            String title = x.getTitle();
            /*			String[] split = title.split(search);
             */
			/*if(split.length>=2){
				for(int i=0;i<split.length-1;i++){
			title=split[i]+"<font color='red'>"+search+"</font>"+split[i+1];
				}
			}else{
				title=split[0]+"<font color='red'>"+search+"</font>";
			}*/
            title=title.replace(search, "<font color='red'>"+search+"</font>");
            System.out.println(title);
            x.setTitle(title);
            return x;
        }).collect(Collectors.toList());

        return "addnews";
    }
    @RequestMapping("/edit")
    public String edit(){
        String title = request.getParameter("title");
        String content = request.getParameter("content");
        String categoryid = request.getParameter("categoryid");
        News news = new News();
        news.setCategoryid(Integer.parseInt(categoryid));
        news.setContent(content);
        news.setPbdate(new Date());
        news.setId(Integer.parseInt(request.getParameter("id")));
        news.setTitle(title);
        newsDao.edit(news);