基于SSM的在线算法教学演示系统

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项目介绍： 

该系统使用ssm整合，数据层为MyBatis，mysql数据库，具有完整的业务逻辑，适合选题：ssm、在线教学、算法演示、视频网站等。

项目功能：

系统角色分为学生和老师，网站类型，分为前后台。

学生角色：前台学生注册系统后，登录系统进入首页，首页展示不同算法类别的视频，每个类别展示几个，如果点击类别名称可以进入类别页面，查看该类别全部视频。在网站上方有搜索框，可以搜索视频学习，在视频详情界面，视频显示播放量，可以收藏，有视频简介，也可以进行登录后评论，学生可以到达个人中心查看自己的个人信息，或修改个人信息，并查看收藏及评论记录。

老师角色：登录功能，视频内容管理模块（视频的查看，上传，修改，删除），分类管理模块（分类的增加，删除，修改，查看），教师信息管理模块（教师的查看，修改，增加，删除），学生管理模块（增加，删除，修改，查询）。

数据库表结构文档：

系统包含技术：

技术：Spring，SpringMVC，Mybatis
开发工具：eclipse
数据库：mysql 5.7
JDK版本：jdk1.8
服务器：tomcat8

部分截图说明：

下面是首页

算法列表，可以根据分类查看算法

热门排行算法，根据收藏数排行

详情查看，可以查看视频，可以进行评论

个人中心

后台登录

后台首页

后台对学生进行管理

 后台对分类维护

 后台对算法维护

 后台查看评论

部分代码截图：

视频操作

//返回到前台首页
	@RequestMapping(value = "/index")
	public String index(HttpServletRequest request,ModelMap model) {
		String path = request.getContextPath();
		System.out.println(path);
		List<Video> allvideo=videoService.ReadByProperty();
		List<Guanggao> guanggaolist=guanggaoService.queryImg(1);
		List<Category> allcategory=categoryService.queryAll();
		//System.out.println(allvideo);
		//图片数量		
		model.addAttribute("guanggaolist", guanggaolist);
		model.addAttribute("allcategory", allcategory);
		model.addAttribute("resultvideovod", allvideo);
		model.addAttribute("pre", "/OnlineMovie");
		return "front/videomain";
	}
	
	//按照ID查询视频
	@RequestMapping("/videobyId/{videoid}")
	public ModelAndView videobyId(@PathVariable("videoid") Integer id,ModelMap model,HttpServletRequest request) throws Exception{
		ModelAndView mv = new ModelAndView();
		HttpSession session = request.getSession();
		int s = 0;
		if(session.getAttribute("uid") == null){
			s=1;
		}else{
			String uid = session.getAttribute("uid").toString();
	        int userid =  Integer.parseInt(uid);
	        List<Star> ss = starService.queryUidVid(userid,id);
	        if(ss.size() == 0){
	        	s=1;
	        }else{
	        	s=2;
	        }
		}
		Video video=videoService.queryByID(id);
		List<Comments> comments=commentsService.queryById(id);
		int total = comments.size();
		Category category = categoryService.queryById(video.getCategoryid());
		model.addAttribute("video", video);
		model.addAttribute("comments", comments);
		model.addAttribute("total", total);
		model.addAttribute("ss", s);
		model.addAttribute("categoryname", category.getName());
	    mv.setViewName("front/videodetail");	
	    model.addAttribute("pre", "/OnlineMovie");
	    return mv;  
	}
	
	
	//留言成功后界面按照ID查询视频
		@RequestMapping("/videobyIdCC/{videoid}")
		public ModelAndView videobyIdCC(@PathVariable("videoid") Integer id,HttpServletRequest request,ModelMap model) throws Exception{
			ModelAndView mv = new ModelAndView();
			HttpSession session = request.getSession();
			int s = 0;
			if(session.getAttribute("uid") == null){
				s=1;
			}else{
				String uid = session.getAttribute("uid").toString();
		        int userid =  Integer.parseInt(uid);
		        List<Star> ss = starService.queryUidVid(userid,id);
		        if(ss.size() == 0){
		        	s=1;
		        }else{
		        	s=2;
		        }
			}
			Video video=videoService.queryByID(id);
			List<Comments> comments=commentsService.queryById(id);
			int total = comments.size();
			Category category = categoryService.queryById(video.getCategoryid());
			model.addAttribute("video", video);
			model.addAttribute("comments", comments);
			model.addAttribute("total", total);
			model.addAttribute("ss", s);
			model.addAttribute("categoryname", category.getName());
		    mv.setViewName("front/videodetail");	
		    model.addAttribute("pre", "/OnlineMovie");
		    return mv;  
		}
	
	
	
	//跳转到算法列表
	@RequestMapping("/list")
	public ModelAndView video(ModelMap model) throws Exception{
		ModelAndView mv = new ModelAndView();
		List<Category> allcategory=categoryService.queryAll();
		model.addAttribute("allcategory", allcategory);
	    mv.setViewName("front/movieList");	
	    return mv;  
	}
	
	
	    //按照分类查找算法
		@RequestMapping("/queryByCategory/{cid}/{aid}")
		public ModelAndView queryByCategory(@PathVariable("cid") Integer cid,@PathVariable("aid") Integer aid,ModelMap model) throws Exception{			
			ModelAndView mv = new ModelAndView();
			int pageSize=18;
			int pageCode=aid;	    	
	    	PageBean<Video> videoPageBean = videoService.queryAllbycat(cid,pageCode, pageSize);
	    	int tt = videoPageBean.getTotalPage();
	    	model.addAttribute("videoPageBean", videoPageBean);	    	
			List<Category> allcategory=categoryService.queryAll();
			model.addAttribute("allcategory", allcategory);
		    mv.setViewName("front/movieList");	
		    return mv; 
		}
		
		 //按照分类显示全部算法
		@RequestMapping("/queryByCategory2/{cid}/{aid}")
		public ModelAndView queryByCategory2(@PathVariable("cid") Integer cid,@PathVariable("aid") Integer aid,ModelMap model) throws Exception{
			ModelAndView mv = new ModelAndView();
			int pageSize=18;
			int pageCode=aid;	    	
	    	PageBean<Video> videoPageBean = videoService.findAllarticleByPage(cid, pageCode, pageSize);
	    	int tt = videoPageBean.getTotalPage();
	    	model.addAttribute("videoPageBean", videoPageBean);	    	
			List<Category> allcategory=categoryService.queryAll();
			model.addAttribute("allcategory", allcategory);
		    mv.setViewName("front/movieList");	
		    return mv;  
		}
		
		 //模糊查询算法算法
		@RequestMapping("/queryVideo")
		public ModelAndView queryVideo(ModelMap model,HttpServletRequest request) throws Exception{
			ModelAndView mv = new ModelAndView();
			String search = request.getParameter("searchMovie");
			List<Video> videobycategory=videoService.queryVideo(search);
			model.addAttribute("videobycategory", videobycategory);
		    mv.setViewName("front/movieSearch");	
		    return mv;  		   
		}
		
		//下载算法
		@RequestMapping("/upload/{id}")
		public  ResponseEntity<byte[]> upload(@PathVariable("id") Integer id,HttpServletRequest request, HttpServletResponse response,ModelMap model) throws Exception{
			ModelAndView mv = new ModelAndView();
			Video video = videoService.queryByID(id);
			// 文件保存路径  
            String filePath = "D:/upload" + video.getUrl();  
            // 转存文件
            String fileNames = video.getUrl().substring(video.getUrl().lastIndexOf("/")+1);
            String downloadFileName = URLEncoder.encode(fileNames,"UTF-8");
			File file = new File(filePath);
		    byte[] body = null;
		    InputStream is = new FileInputStream(file);
		    body = new byte[is.available()];
		    is.read(body);
		    HttpHeaders headers = new HttpHeaders();
		    headers.add("Content-Disposition", "attchement;filename="+downloadFileName);
		    HttpStatus statusCode = HttpStatus.OK;
		    ResponseEntity<byte[]> entity = new ResponseEntity<byte[]>(body, headers, statusCode);
		    return entity;
		}
	
		 //热门排行
		@RequestMapping("/rank")
		public ModelAndView rank(ModelMap model) throws Exception{
			ModelAndView mv = new ModelAndView();
			List<Video> videorank = videoService.videorank();
			model.addAttribute("videorank", videorank);
		    mv.setViewName("front/movieRank");	
		    return mv;  
		}

学生登录

//学生登录
	@RequestMapping(value = "/userLogin")
	public ModelAndView userLogin(String email, String password ,ModelMap map,HttpServletRequest request, HttpServletResponse response)  throws ServletException, IOException  {
		
		HttpSession session = request.getSession();
		ModelAndView modelAndView = new ModelAndView();
		User user = userService.check(email);
		if(user==null) {
			session.setAttribute("msg", "对不起，登录名错误，请重试！");
			modelAndView.setViewName("front/login");		
			return modelAndView;
		}else {
			if(user.getPassword().equals(password)) {
				String uname = user.getName();
				int uid = user.getUid();
				session.setAttribute("uname", uname);
				session.setAttribute("uid", uid);
				modelAndView.setViewName("redirect:/video/index");
				return modelAndView;
			}else {				
				session.setAttribute("msg", "对不起，密码错误，请重试！");
				modelAndView.setViewName("front/login");		
				return modelAndView;
			}
			
		}	
		
	}

以上就是部分功能展示，从整体上来看，本系统功能是十分完整的，界面设计简洁大方，交互友好，数据库设计也很合理，规模适中，代码工整，清晰，适合学习使用。

好了，今天就到这儿吧，小伙伴们点赞、收藏、评论，一键三连走起呀，下期见~~