<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Insert title here</title> </head> <% Object message = request.getAttribute("message"); if(message!=null && !"".equals(message)){ %> <script type="text/javascript"> alert("<%=request.getAttribute("message")%>"); </script> <%} %> <body> <h1>当前位置：添加学生信息</h1> <form action="servlet?method=zhengjia" method="post"> <div class="a"> 登录账号<input type="text" name="zhanghao" value=""/> </div> <div class="a"> 登录密码<input type="password" name="password"value="" /> </div> <div class="radio"> <label> 性别<input type="radio" name="sex" value="male" checked> 男 </label> <label> <input type="radio" name="sex" value="female" checked> 女 </label> <div class="a"> 姓名<input type="text" name="name"value="" /> </div> <div class="a"> 学号<input type="text" name="stunum"value="2018"maxlength="8"/> </div> <div class="a"> 电子邮件<input type="text" name="mailbox"value="" /> </div> <div class="a"> 所在学院<input type="text" name="xueyuan"value="" /> </div> <div class="a"> 所在系<input type="text" name="xi"value="" /> </div> <div class="a"> 所在班级<input type="text" name="classroom"value="" /> </div> </div> <div class="a"> 入学年份<td rowspan="2"> <select name="nian"onkeypress="return handleEnter(this, event)" id="4"> <option>2018</option> <option>2017</option> <option>2016</option> </select></td> </div> <div class="a"> 生源地<input type="text" name="hometown" value=""/> </div> <div class="a"> 备注<input type="text" name="beizhu"value="" /> </div> <div class="a"> <button type="submit" class="b">添 加</button> </div> </form> </body> </html> <script language="JavaScript"> function check() { var zhanghao = document.form.zhanghao.value; var password = document.form.password.value; var sex = document.form.sex.value; var name = document.form.name.value; var stunum= document.form.stunum.value; var xueyuan =document. form.xueyuan.value; var xi = document.form.xi.value; var mailbox =document. form.mailbox.value; var classroom = document.form.classroom.value; var nian =document. form.nian.value; var hometown = document.form.hometown.value; var beizhu = document.form.beizhu.value; //判断用户名长度 if (!minLength(zhanghao, 6)) { alert("用户名长度小于6位！"); form.zhanghao.focus(); return false; } if (!maxLength(zhanghao, 12)) { alert("用户名长度大于12位！"); form.zhanghao.focus(); return false; } if(!isDigital(zhanghao)){ alert("用户名只有字母可以开头"); form.username.focus(); return false; } //判断口令长度 if (!minLength(password, 8)) { alert("密码长度小于8位！"); form.password.focus(); return false; } if (!minLength(stunum, 4)) { alert("学号长度小于8位！"); form.stunum.focus(); return false; } if (!isNumber(stunum)) { alert("学号必须是数字"); form.stunum.focus(); return false; } //验证E-mail的格式是否正确 if (!isEmail(mailbox)) { alert("E-mail格式不正确！"); form.mailbox.focus(); return false; } document.form.submit(); //验证是否满足最小长度 function minLength(str, length) { if (str.length >= length) return true; else return false; } //判断是否满足最大长度 function maxLength(str, length) { if (str.length <= length) return true; else return false; } //判断首字母 function isDigital(str) { if (str.charAt(0) >= 'a' && str.charAt(0) <= 'z'||(str.charAt(0) >= 'A' && str.charAt(0) <= 'Z')) return true; else return false; } //判断是否是整数 function isNumber(str) { for(i=0;i<str.length;i++) { //每一位都是0～9的数字，如果是第1位，则可以是“-”号 if(str.charAt(i)>='0'&&str.charAt(i)<='9' ||str.charAt(i)=='-'&&i==0) continue; else return false; } return true; } //判断是否是E-mail function isEmail(mailbox) { if (mailbox.length == 0) return false; index1 = mailbox.indexOf('@'); index2 = mailbox.indexOf('.'); if (index1 < 1//@符号不存在，或者在第一个位置 || index2 < 1//.符号不存在，或者在第一个位置 || index2 - index1 < 2//.在@的左边或者相邻 || index2 + 1 == email.length)//.符号后面没有东西 return false else return true; } } </script>
package Db; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class Db { public static String db_url = "jdbc:mysql://localhost:3306/system?serverTimezone=UTC"; public static String db_user = "root"; public static String db_pass = "vayne"; public static Connection getConn () { Connection conn = null; try { Class.forName("com.mysql.cj.jdbc.Driver"); conn = DriverManager.getConnection(db_url, db_user, db_pass); } catch (Exception e) { e.printStackTrace(); } return conn; } public static void close (Statement state, Connection conn) { if (state != null) { try { state.close(); } catch (SQLException e) { e.printStackTrace(); } } if (conn != null) { try { conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } public static void close (ResultSet rs, Statement state, Connection conn) { if (rs != null) { try { rs.close(); } catch (SQLException e) { e.printStackTrace(); } } if (state != null) { try { state.close(); } catch (SQLException e) { e.printStackTrace(); } } if (conn != null) { try { conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } }
package Fa; public class Fa { String zhanghao; String password; String name; String sex; String stunum; String xueyuan; String mailbox; String xi; String classroom; String nian; String hometown; String beizhu; public Fa(String zhanghao) { this.zhanghao = zhanghao; } public Fa(String zhanghao, String password, String name, String sex,String stunum,String xueyuan,String mailbox, String xi, String classroom, String nian, String hometown, String beizhu) { this.zhanghao = zhanghao; this.password = password; this.name = name; this.sex = sex; this.stunum = stunum; this.xueyuan = xueyuan; this.mailbox = mailbox; this.xi = xi; this.classroom = classroom; this.nian = nian; this.hometown = hometown; this.beizhu = beizhu; } public String getzhanghao() { return zhanghao; } public void setzhanghao(String zhanghao) { this.zhanghao = zhanghao; } public String getpassword() { return password; } public void setpassword(String password) { this.password = password; } public String getname() { return name; } public void setage(String name) { this.name = name; } public String getsex() { return sex; } public void setsex(String sex) { this.sex = sex; } public String getstunum() { return stunum; } public void setstunum(String stunum) { this.stunum = stunum; } public String getxueyuan() { return xueyuan; } public void setxueyuan(String xueyuan) { this.xueyuan = xueyuan; } public String getxi() { return xi; } public void setxi(String xi) { this.xi = xi; } public String getclassroom() { return classroom; } public void setclassroom(String classroom) { this.classroom = classroom; } public String getnian() { return nian; } public void setnian(String nian) { this.nian = nian; } public String gethometown() { return hometown; } public void sethometown(String hometown) { this.hometown = hometown; } public String getbeizhu() { return beizhu; } public void setbeizhu(String beizhu) { this.beizhu = beizhu; } public String getmailbox() { return sex; } public void setmailbox(String mailbox) { this.mailbox = mailbox; } }
package servelt; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import Fa.Fa; import dao.dao; @WebServlet("/servlet") public class servelt extends HttpServlet { private static final long serialVersionUID = 1L; protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); add(request, response); } private void add(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { // TODO Auto-generated method stub request.setCharacterEncoding("utf-8"); String zhanghao=request.getParameter("zhanghao"); String password=request.getParameter("password"); String name=request.getParameter("name"); String sex=request.getParameter("sex"); String stunum=request.getParameter("stunum"); String mailbox=request.getParameter("mailbox"); String xueyuan=request.getParameter("xueyuan"); String xi=request.getParameter("xi"); String classroom=request.getParameter("classroom"); String nian=request.getParameter("nian"); String hometown=request.getParameter("hometown"); String beizhu=request.getParameter("beizhu"); Fa f=new Fa( zhanghao,password,name,sex,stunum,xueyuan,mailbox,xi,classroom,nian,hometown,beizhu); if(dao.add(f)) { request.setAttribute("message", "添加成功"); request.getRequestDispatcher("NewFile.jsp").forward(request,response); } else { request.setAttribute("message", "添加失败"); request.getRequestDispatcher("NewFile.jsp").forward(request,response); } } }
package dao; import java.sql.Connection; import java.sql.Statement; import Db.Db; import Fa.Fa; public class dao { public static boolean add(Fa x) { String sql = "insert into biao2(zhanghao,password,name,sex,stunum,xueyuan,mailbox,xi,classroom,nian,hometown,beizhu) values('" + x.getzhanghao() + "','" + x.getpassword() +"','" + x.getname() +"','" + x.getsex() +"','"+ x.getstunum() +"','"+ x.getmailbox() +"','"+ x.getxueyuan() +"','"+ x.getxi() +"','"+ x.getclassroom()+"','"+ x.getnian()+"','"+ x.gethometown()+"','"+ x.getbeizhu()+"')"; Connection conn = Db.getConn(); Statement state = null; boolean f = false; int a = 0; try { state = conn.createStatement(); a = state.executeUpdate(sql); } catch (Exception e) { e.printStackTrace(); } finally { Db.close(state, conn); } if (a > 0) { f = true; } return f; } }