一、项目介绍

前台功能模块：系统首页、我的信息、留言板、用户登陆、公告以及日历模块

后台功能模块：修改个人信息、管理员管理、注册用户管理、类别信息管理、类别信息添加、散件信息管理、散件信息添加、公告信息管理、公告信息添加

二、项目技术栈

tomcat+jsp+sqlserver

三、核心代码

登录功能

java">public class loginService
{
	public String login(String userName,String userPw,int userType)
	{
		System.out.println("userType"+userType);
		try
		{
			Thread.sleep(700);
		} catch (InterruptedException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		String result="no";
		
		if(userType==0)//系统管理员登陆
		{
			String sql="select * from t_admin where userName=? and userPw=?";
			Object[] params={userName,userPw};
			DB mydb=new DB();
			mydb.doPstm(sql, params);
			try 
			{
				ResultSet rs=mydb.getRs();
				boolean mark=(rs==null||!rs.next()?false:true);
				if(mark==false)
				{
					 result="no";
				}
				else
				{
					 result="yes";
					 TAdmin admin=new TAdmin();
					 admin.setUserId(rs.getInt("userId"));
					 admin.setUserName(rs.getString("userName"));
					 admin.setUserPw(rs.getString("userPw"));
					 WebContext ctx = WebContextFactory.get(); 
					 HttpSession session=ctx.getSession(); 
					 session.setAttribute("userType", 0);
		             session.setAttribute("admin", admin);
				}
				rs.close();
			} 
			catch (SQLException e)
			{
				System.out.println("登录失败！");
				e.printStackTrace();
			}
			finally
			{
				mydb.closed();
			}
			
		}
		
		
		if(userType==1)
		{
			String sql="select * from t_user where del='no' and loginname=? and loginpw=?";
			Object[] params={userName,userPw};
			DB mydb=new DB();
			mydb.doPstm(sql, params);
			try 
			{
				ResultSet rs=mydb.getRs();
				boolean mark=(rs==null||!rs.next()?false:true);
				if(mark==false)
				{
					 result="no";
				}
				else
				{
					result="yes";
					Tuser user=new Tuser();
					user.setId(rs.getString("id"));
					user.setLoginname(rs.getString("loginname"));
					user.setLoginpw(rs.getString("loginpw"));
					user.setLoginpw(rs.getString("loginpw"));
					user.setName(rs.getString("name"));
					user.setSex(rs.getString("sex"));
					user.setAge(rs.getString("age"));
					user.setAddress(rs.getString("address"));
					user.setTel(rs.getString("tel"));
					user.setEmail(rs.getString("email"));
					user.setQq(rs.getString("qq"));
					
					WebContext ctx = WebContextFactory.get(); 
					HttpSession session=ctx.getSession(); 
					session.setAttribute("userType", 1);
		            session.setAttribute("user", user);
				}
				rs.close();
			} 
			catch (SQLException e)
			{
				System.out.println("登录失败！");
				e.printStackTrace();
			}
			finally
			{
				mydb.closed();
			}
		}
		if(userType==2)
		{
			
		}
		return result;
	}

    public String adminPwEdit(String userPwNew)
    {
		System.out.println("DDDD");
    	try 
		{
			Thread.sleep(700);
		} 
		catch (InterruptedException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		WebContext ctx = WebContextFactory.get(); 
		HttpSession session=ctx.getSession(); 
		TAdmin admin=(TAdmin)session.getAttribute("admin");
		
		String sql="update t_admin set userPw=? where userId=?";
		Object[] params={userPwNew,admin.getUserId()};
		DB mydb=new DB();
		mydb.doPstm(sql, params);
		
		return "yes";
    }
    
    public List catelogAll()
    {
    	try
		{
			Thread.sleep(700);
		} catch (InterruptedException e)
		{
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    	
    	List catelogList=new ArrayList();
		String sql="select * from t_catelog where del='no'";
		Object[] params={};
		DB mydb=new DB();
		try
		{
			mydb.doPstm(sql, params);
			ResultSet rs=mydb.getRs();
			while(rs.next())
			{
				Tcatelog catelog=new Tcatelog();
				catelog.setId(rs.getInt("id"));
				catelog.setName(rs.getString("name"));
				catelog.setJieshao(rs.getString("jieshao"));
				catelogList.add(catelog);
		    }
			rs.close();
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		mydb.closed();
		System.out.println(catelogList.size()+"^^");
		return catelogList;
    }
}

登录servlet层

java">
public class admin_servlet extends HttpServlet
{
	public void service(HttpServletRequest req,HttpServletResponse res)throws ServletException, IOException 
	{
        String type=req.getParameter("type");
		
		if(type.endsWith("adminMana"))
		{
			adminMana(req, res);
		}
		if(type.endsWith("adminAdd"))
		{
			adminAdd(req, res);
		}
		if(type.endsWith("adminDel"))
		{
			adminDel(req, res);
		}
	}
	
	public void adminMana(HttpServletRequest req,HttpServletResponse res) throws ServletException, IOException
	{
		List adminList=new ArrayList();
		String sql="select * from t_admin";
		Object[] params={};
		DB mydb=new DB();
		try
		{
			mydb.doPstm(sql, params);
			ResultSet rs=mydb.getRs();
			while(rs.next())
			{
				TAdmin admin=new TAdmin();
				admin.setUserId(rs.getInt("userId"));
				admin.setUserName(rs.getString("userName"));
				admin.setUserPw(rs.getString("userPw"));
				adminList.add(admin);
		    }
			rs.close();
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
		mydb.closed();
		
		req.setAttribute("adminList", adminList);
		req.getRequestDispatcher("admin/admin/adminMana.jsp").forward(req, res);
	}
	public void adminAdd(HttpServletRequest req,HttpServletResponse res)
	{
		String userName=req.getParameter("userName");
		String userPw=req.getParameter("userPw");
		String sql="insert into t_admin values(?,?)";
		Object[] params={userName,userPw};
		DB mydb=new DB();
		mydb.doPstm(sql, params);
		mydb.closed();
		
		req.setAttribute("message", "操作成功");
		req.setAttribute("path", "admin?type=adminMana");
		
        String targetURL = "/common/success.jsp";
		dispatch(targetURL, req, res);
	}
	
	public void adminDel(HttpServletRequest req,HttpServletResponse res)
	{
		System.out.println(req.getParameter("userId")+"**");
		String sql="delete from t_admin where userId="+Integer.parseInt(req.getParameter("userId"));
		Object[] params={};
		DB mydb=new DB();
		mydb.doPstm(sql, params);
		mydb.closed();
		
		req.setAttribute("message", "操作成功");
		req.setAttribute("path", "admin?type=adminMana");
		
        String targetURL = "/common/success.jsp";
		dispatch(targetURL, req, res);
	}

	public void dispatch(String targetURI,HttpServletRequest request,HttpServletResponse response) 
	{
		RequestDispatcher dispatch = getServletContext().getRequestDispatcher(targetURI);
		try 
		{
		    dispatch.forward(request, response);
		    return;
		} 
		catch (ServletException e) 
		{
                    e.printStackTrace();
		} 
		catch (IOException e) 
		{
			
		    e.printStackTrace();
		}
	}
	public void init(ServletConfig config) throws ServletException 
	{
		super.init(config);
	}
	
	public void destroy() 
	{
		
	}
}

数据库功能

java">public class DB {
	private Connection con;

	private PreparedStatement pstm;

	private String user = "sa";

	private String password = "sa";

	private String className = "com.microsoft.sqlserver.jdbc.SQLServerDriver";

	private String url = "jdbc:sqlserver://localhost:1433;databaseName=db_jsjsj";

	public DB()
	{
		try
		{
			Class.forName(className);
		} catch (ClassNotFoundException e)
		{
			System.out.println("加载数据库驱动失败！");
			e.printStackTrace();
		}
	}

	/** 创建数据库连接 */
	public Connection getCon()
	{
		try
		{
			con = DriverManager.getConnection(url, user, password);
		} catch (SQLException e)
		{
			System.out.println("创建数据库连接失败！");
			con = null;
			e.printStackTrace();
		}
		return con;
	}

	public void doPstm(String sql, Object[] params)
	{
		if (sql != null && !sql.equals(""))
		{
			if (params == null)
				params = new Object[0];

			getCon();
			if (con != null)
			{
				try
				{
					System.out.println(sql);
					pstm = con.prepareStatement(sql,
							ResultSet.TYPE_SCROLL_INSENSITIVE,
							ResultSet.CONCUR_READ_ONLY);
					for (int i = 0; i < params.length; i++)
					{
						pstm.setObject(i + 1, params[i]);
					}
					pstm.execute();
				} catch (SQLException e)
				{
					System.out.println("doPstm()方法出错！");
					e.printStackTrace();
				}
			}
		}
	}

	public ResultSet getRs() throws SQLException
	{
		return pstm.getResultSet();
	}

	public int getCount() throws SQLException
	{
		return pstm.getUpdateCount();
	}

	public void closed()
	{
		try
		{
			if (pstm != null)
				pstm.close();
		} catch (SQLException e)
		{
			System.out.println("关闭pstm对象失败！");
			e.printStackTrace();
		}
		try
		{
			if (con != null)
			{
				con.close();
			}
		} catch (SQLException e)
		{
			System.out.println("关闭con对象失败！");
			e.printStackTrace();
		}
	}
}

四、项目展示

主页

登录

系统管理员端

五、源码

因为页面与源码太多了，所以页面与源码只展示了一部分，完整源码已经打包了，点击下面蓝色链接获取！

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