基于Java的学生竞赛管理系统

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主要内容：毕业设计(Javaweb项目|小程序等)、简历模板、学习资料、面试题库、技术咨询

项目介绍： 

该系统基于Java语言，mysql数据库，具有完整的业务逻辑，适合选题：大学生竞赛、竞赛、获奖登记等，主要功能有：用户管理、竞赛申请、获奖登记、学生维护、公告维护等。

系统包含技术：

后端：servlet
前端：js,css等
开发工具：eclipse
数据库：mysql 5.7
JDK版本：jdk1.8
tomcat版本：tomcat8

部分截图说明：

下面是前台，可以查看公告

 查看公告详情

系统分为三个角色，这里可以进行登录

管理员进行用户管理

管理员增加用户

管理员通知管理操作

教师对获奖登记管理

教师竞赛申请

教师对学生信息维护

教师增加竞赛申请

管理员增加公告

部分代码：

if(method.equals("addfl")){  //增加学院   ***********代码注释  
			String mc = request.getParameter("mc");  
			String str=cBean.getString("select id from fl where mc='"+mc+"'");
			if(str==null){
				int flag = cBean.comUp("insert into fl(mc)  values('"+mc+"' )");
				if(flag == Constant.SUCCESS){ 
					request.setAttribute("message", "操作成功！");
					request.getRequestDispatcher("admin/fl/index.jsp").forward(request, response);
				}
				else{
					request.setAttribute("message", "操作失败！");
					request.getRequestDispatcher("admin/fl/index.jsp").forward(request, response);
				} 
			}
			else{
				request.setAttribute("message", "信息重复");
				request.getRequestDispatcher("admin/fl/index.jsp").forward(request, response);
			} 
		} 
		else if(method.equals("upfl")){  //修改学院   ***********代码注释  
			String id = request.getParameter("id"); 
			String mc = request.getParameter("mc");  
			String str=cBean.getString("select mc from fl where mc='"+mc+"' and id!='"+id+"'");
			if(str==null){
				int flag = cBean.comUp("update fl set mc='"+mc+"' where id='"+id+"'");
				if(flag == Constant.SUCCESS){ 
					request.setAttribute("message", "操作成功！");
					request.getRequestDispatcher("admin/fl/index.jsp").forward(request, response);
				}
				else{
					request.setAttribute("message", "操作失败！");
					request.getRequestDispatcher("admin/fl/index.jsp").forward(request, response);
				} 
			}
			else{
				request.setAttribute("message", "信息重复");
				request.getRequestDispatcher("admin/fl/index.jsp").forward(request, response);
			} 
		} 
		else if(method.equals("delfl")){//删除学院
			String id = request.getParameter("id"); 
			int flag = cBean.comUp("delete from fl where id='"+id+"'");
			if(flag == Constant.SUCCESS){ 
				request.setAttribute("message", "操作成功！");
				request.getRequestDispatcher("admin/fl/index.jsp").forward(request, response);
			}
			else{
				request.setAttribute("message", "操作失败！");
				request.getRequestDispatcher("admin/fl/index.jsp").forward(request, response);
			}
		}  
		else if(method.equals("addxw")){  // 通知公告 
			String bt = request.getParameter("bt"); 
			String fl = request.getParameter("fl"); 
			String nr = request.getParameter("content1"); 
			if(nr==null)nr="暂无";
			int flag = cBean.comUp("insert into xw(bt,fl,nr,sj)  values('"+bt+"','"+fl+"','"+nr+"','"+date+"')");
			if(flag == Constant.SUCCESS){ 
				request.setAttribute("message", "操作成功！");
				request.getRequestDispatcher("admin/xw/index.jsp").forward(request, response);
			}
			else{
				request.setAttribute("message", "操作失败！");
				request.getRequestDispatcher("admin/xw/index.jsp").forward(request, response);
			} 
		} 
		else if(method.equals("upxw")){ //修改 通知公告 
			String id=request.getParameter("id");
			String bt = request.getParameter("bt"); 
			String fl = request.getParameter("fl"); 
			String nr = request.getParameter("content1"); 
			if(nr==null)nr="暂无";
			int flag = cBean.comUp("update xw set bt='"+bt+"',fl='"+fl+"',nr='"+nr+"' where id='"+id+"'");
			if(flag == Constant.SUCCESS){ 
				request.setAttribute("message", "操作成功！");
				request.getRequestDispatcher("admin/xw/index.jsp").forward(request, response);
			}
			else{
				request.setAttribute("message", "操作失败！");
				request.getRequestDispatcher("admin/xw/index.jsp").forward(request, response);
			}  
		} 
		else if(method.equals("delxw")){//删除 通知公告
			String id = request.getParameter("id"); 
			int flag = cBean.comUp("delete from xw where id='"+id+"'");
			if(flag == Constant.SUCCESS){ 
				request.setAttribute("message", "操作成功！");
				request.getRequestDispatcher("admin/xw/index.jsp").forward(request, response);
			}
			else{
				request.setAttribute("message", "操作失败！");
				request.getRequestDispatcher("admin/xw/index.jsp").forward(request, response);
			}
		}  
		
		else if(method.equals("delgw")){//删除 审核
			String id = request.getParameter("id"); 
			int flag = cBean.comUp("delete from gw where id='"+id+"'");
			if(flag == Constant.SUCCESS){ 
				request.setAttribute("message", "操作成功！");
				request.getRequestDispatcher("admin/gw/index.jsp").forward(request, response);
			}
			else{
				request.setAttribute("message", "操作失败！");
				request.getRequestDispatcher("admin/gw/index.jsp").forward(request, response);
			}
		}  
		else if(method.equals("shgw")){ // 审核 
			String id=request.getParameter("id");
			String sh = request.getParameter("sh");  
			String yj = request.getParameter("yj");  
			int flag = cBean.comUp("update gw set sh='"+sh+"', yj='"+yj+"' where id='"+id+"'");
			if(flag == Constant.SUCCESS){ 
				request.setAttribute("message", "操作成功！");
				request.getRequestDispatcher("admin/gw/index2.jsp").forward(request, response);
			}
			else{
				request.setAttribute("message", "操作失败！");
				request.getRequestDispatcher("admin/gw/index2.jsp").forward(request, response);
			}  
		}

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~~