今天把登录界面以及写了管理员功能页的一部分
不过今天，我弄了一个设置界面的背景
在<title>后面加上<style>body{background:url(images/1.jpg)}</style>，其中1.jsp是在WebContent文件目录下，自己新建了一个文件夹叫做images
其中，jsp界面怎么设置背景可以参考链接：https://jingyan.baidu.com/article/9989c746c0d308f648ecfe09.html
另外，登录界面的代码如下：
login.jsp
1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2 pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>家庭记账本</title> 8 <style> 9 body{background:url(images/1.jpg)} 10 </style> 11 </head> 12 <body> 13 <center> 14 <br><br><br><br><br><br><br> 15 <h1 style="color:black">家庭记账本</h1> 16 <form action="Servlet?method=Login" method="post"> 17 <tr> 18 <td>用户名</td> 19 <td><input type="text" name="num" id="num"></td> 20 </tr> 21 <br><br> 22 <tr> 23 <td>密码</td> 24 <td><input type="password" name="password" id="password"></td> 25 </tr> 26 <br><br> 27 <tr> 28 <td>用户</td> 29 <td> 30 <select id="user" name="user"> 31 <option>管理员</option> 32 <option>普通用户</option> 33 </select> 34 </td> 35 </tr> 36 <br><br> 37 <tr> 38 <td><input type="submit" value="登录"></td> 39 </tr> 40 </form> 41 </center> 42 </body> 43 </html>
servlet里面的Login代码为：
1 public void Login(HttpServletRequest request,HttpServletResponse response) throws IOException, ServletException { 2 request.setCharacterEncoding("utf-8"); 3 response.setCharacterEncoding("utf-8"); 4 String num=request.getParameter("num"); 5 System.out.println(num); 6 String password=request.getParameter("password"); 7 System.out.println(password); 8 String user=request.getParameter("user"); 9 System.out.println(user); 10 if(dao.Login(num,password,user)) { 11 System.out.println("dao层验证成功"); 12 HttpSession session=request.getSession(); 13 session.setAttribute("loginnum",num); 14 String loginnum=(String)session.getAttribute("loginnum"); 15 System.out.println(loginnum); 16 if(user.equals("管理员")) { 17 System.out.println("进入管理员功能页"); 18 request.getRequestDispatcher("admin.jsp").forward(request, response); 19 }else if(user.equals("用户")) { 20 System.out.println("进入用户功能页"); 21 request.getRequestDispatcher("user.jsp").forward(request,response); 22 }else { 23 System.out.println("进入功能页失败"); 24 request.getRequestDispatcher("login.jsp").forward(request, response); 25 } 26 }else { 27 System.out.println("dao层验证失败"); 28 request.getRequestDispatcher("login.jsp").forward(request,response); 29 } 30 }
dao里面得Login代码：
1 public boolean Login(String num,String password,String user) { 2 String sql="select num,password,user from login"; 3 Connection conn=Database.getConnection(); 4 Statement stmt=null; 5 try { 6 stmt=conn.createStatement(); 7 ResultSet rs=stmt.executeQuery(sql); 8 while(rs.next()) { 9 //用户输入的信息和数据库中的信息做比较，判断输入是否正确； 10 String Num=rs.getString("num"); 11 System.out.println("从数据库获取的num为:"+Num); 12 String pwd=rs.getString("password"); 13 System.out.println("从数据库获取的password为:"+pwd); 14 String us=rs.getString("user"); 15 System.out.println("从数据库获取的user为:"+us); 16 if(Num.trim().compareTo(num)==0&&pwd.trim().compareTo(password)==0&&us.trim().compareTo(user)==0) { 17 return true; 18 } 19 } 20 rs.close(); 21 }catch(Exception e) { 22 e.printStackTrace(); 23 } 24 return false; 25 }
另外，还在user里面定义了User类以及Consume类：
User.java
1 public class User { 2 private String num;//用户名 3 private String password;//密码 4 private String sex;//性别 5 private String age;//年龄 6 private String phone;//电话 7 private String time;//注册时间 8 public User() {} 9 public User(String num,String password,String sex,String age,String phone,String time) { 10 super(); 11 this.num=num; 12 this.password=password; 13 this.sex=sex; 14 this.age=age; 15 this.phone=phone; 16 this.time=time; 17 } 18 public String getNum() { 19 return num; 20 } 21 public void setNum(String num) { 22 this.num = num; 23 } 24 public String getPassword() { 25 return password; 26 } 27 public void setPassword(String password) { 28 this.password = password; 29 } 30 public String getSex() { 31 return sex; 32 } 33 public void setSex(String sex) { 34 this.sex = sex; 35 } 36 public String getAge() { 37 return age; 38 } 39 public void setAge(String age) { 40 this.age = age; 41 } 42 public String getPhone() { 43 return phone; 44 } 45 public void setPhone(String phone) { 46 this.phone = phone; 47 } 48 public String getTime() { 49 return time; 50 } 51 public void setTime(String time) { 52 this.time = time; 53 } 54 }
Consume.java
1 public class Consume { 2 private String conName;//名称 3 private String conType;//账单类型 4 private String conTime;//时间 5 private String conMoney;//金额 6 private String conNote;//备注 7 public Consume() {} 8 public Consume(String conName,String conType,String conTime,String conMoney,String conNote) { 9 super(); 10 this.conName=conName; 11 this.conType=conType; 12 this.conTime=conTime; 13 this.conMoney=conMoney; 14 this.conNote=conNote; 15 } 16 public String getConName() { 17 return conName; 18 } 19 public void setConName(String conName) { 20 this.conName = conName; 21 } 22 public String getConType() { 23 return conType; 24 } 25 public void setConType(String conType) { 26 this.conType = conType; 27 } 28 public String getConTime() { 29 return conTime; 30 } 31 public void setConTime(String conTime) { 32 this.conTime = conTime; 33 } 34 public String getConMoney() { 35 return conMoney; 36 } 37 public void setConMoney(String conMoney) { 38 this.conMoney = conMoney; 39 } 40 public String getConNote() { 41 return conNote; 42 } 43 public void setConNote(String conNote) { 44 this.conNote = conNote; 45 } 46 47 }