题目要求：
1登录账号：要求由6到12位字母、数字、下划线组成，只有字母可以开头；（1分）
2登录密码：要求显示“• ”或“*”表示输入位数，密码要求八位以上字母、数字组成。（1分）
3性别：要求用单选框或下拉框实现，选项只有“男”或“女”；（1分）
4学号：要求八位数字组成，前四位为“2018”开头，输入自己学号；（1分）
5姓名：输入自己的姓名；
5电子邮箱：要求判断正确格式[email protected]；（1分）
6点击“添加”按钮，将学生个人信息存储到数据库中。（3分）
7可以演示连接上数据库。（2分）
1.数据库连接
package zzm;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
/**
* 数据库连接工具
* @author Hu
*
*/
public class DBUtil {
public static String db_url = "jdbc:mysql://localhost:3306/zzm?useSSL=false";
public static String db_user = "root";
public static String db_pass = "********";
public static Connection getConn () {
Connection conn = null;
try {
Class.forName("com.mysql.jdbc.Driver");//加载驱动
conn = DriverManager.getConnection(db_url, db_user, db_pass);
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
/**
* 关闭连接
* @param state
* @param 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();
}
}
}
}
2..创建所需变量
package zzm;
public class Zzm {
private int id;
private String zhanghao;
private String password;
private String sex;
private String number;
private String name;
private String mail;
private String xueyuan;
private String zhuanye;
private String banji;
private String year;
private String shengyuandi;
private String beizhu;
public int getId()
{
return id;
}
public void setId()
{
this.id=id;
}
public String getZhanghao()
{
return zhanghao;
}
public void setZhanghao()
{
this.zhanghao=zhanghao;
}
public String getPassword()
{
return password;
}
public void setPassword()
{
this.password=password;
}
public String getSex()
{
return sex;
}
public void setSex()
{
this.sex=sex;
}
public String getName()
{
return name;
}
public void setName()
{
this.name=name;
}
public String getMail()
{
return mail;
}
public void setMail()
{
this.mail=mail;
}
public String getNumber()
{
return number;
}
public void setNumber()
{
this.number=number;
}
public String getXueyuan()
{
return xueyuan;
}
public void setXueyuan()
{
this.xueyuan=xueyuan;
}
public String getZhuanye()
{
return zhuanye;
}
public void setZhuanye()
{
this.zhuanye=zhuanye;
}
public String getBanji()
{
return banji;
}
public void setBanji()
{
this.banji=banji;
}
public String getYear()
{
return year;
}
public void setYear()
{
this.year=year;
}
public String getShengyuandi()
{
return shengyuandi;
}
public void setShengyuandi()
{
this.shengyuandi=shengyuandi;
}
public String getBeizhu()
{
return beizhu;
}
public void setBeizhu()
{
this.beizhu=beizhu;
}
public Zzm() {}
public Zzm(int id,String zhanghao,String password,String sex,String name,String number,String mail,String xueyuan,String zhuanye,String banji,String year,String shengyuandi,String beizhu)
{
this.id=id;
this.zhanghao = zhanghao;
this.password = password;
this.name = name;
this.sex = sex;
this.number =number;
this.name = name;
this.mail = mail;
this.xueyuan = xueyuan;
this.zhuanye = zhuanye;
this.banji = banji;
this.year = year;
this.shengyuandi = shengyuandi;
this.beizhu = beizhu;
}
public Zzm(String zhanghao, String password,String sex, String name,String number,String mail,String xueyuan,String zhuanye,String banji,String year,String shengyuandi,String beizhu)
{
this.zhanghao = zhanghao;
this.password = password;
this.name = name;
this.sex = sex;
this.number = number;
this.mail = mail;
this.xueyuan = xueyuan;
this.zhuanye = zhuanye;
this.banji = banji;
this.year = year;
this.shengyuandi = shengyuandi;
this.beizhu = beizhu;
}
}
3.创建中间层，收集网页表单的数据
package zzm;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/ZzmServlet")
public class ZzmServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
ZzmService service = new ZzmService();
protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
String method = req.getParameter("method");
if ("add".equals(method)) {
add(req, resp);
}
}
/**
* 添加
* @param req
* @param resp
* @throws IOException
* @throws ServletException
*/
private void add(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
req.setCharacterEncoding("utf-8");
String zhanghao = req.getParameter("zhanghao");
String password = req.getParameter("password");
String sex = req.getParameter("sex");
String number = req.getParameter("number");
String name = req.getParameter("name");
String mail = req.getParameter("mail");
String xueyuan = req.getParameter("xueyuan");
String zhuanye = req.getParameter("zhuanye");
String banji = req.getParameter("banji");
String year = req.getParameter("year");
String shengyuandi = req.getParameter("shengyuandi");
String beizhu = req.getParameter("beizhu");
Zzm zzm= new Zzm(zhanghao,password,sex,name,number,mail,xueyuan,zhuanye,banji,year,shengyuandi,beizhu);
//添加后消息显示
if(service.add(zzm)) {
req.setAttribute("message", "添加成功");
req.getRequestDispatcher("zzm.jsp").forward(req,resp);
} else {
req.setAttribute("message", "用户名重复，请重新输入");
req.getRequestDispatcher("zzm.jsp").forward(req,resp);
}
}
}
4.创建Dao接口，实现基本的数据库操作
package zzm;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
/**
*
* Dao层操作数据
* @author Zhao
*
*/
public class ZzmDao {
/**
* 添加
* @param zzm
* @return
*/
public boolean add(Zzm zzm) {
String sql = "insert into zzm(zhanghao,password,sex,name,number,mail,xueyuan,zhuanye,banji,year,shengyuandi,beizhu) values(‘" + zzm.getZhanghao() + "‘,‘" + zzm.getPassword() + "‘,‘" + zzm.getSex() + "‘,‘"+zzm.getName()+"‘,‘" + zzm.getNumber() + "‘,‘" + zzm.getMail()+"‘,‘"+zzm.getXueyuan()+"‘,‘"+zzm.getZhuanye()+"‘,‘"+zzm.getBanji() +"‘,‘"+zzm.getYear()+"‘,‘"+zzm.getShengyuandi()+"‘,‘"+zzm.getBeizhu() +"‘)";
Connection conn = DBUtil.getConn();
Statement state = null;
boolean f = false;
int a = 0;
try {
state = conn.createStatement();
state.executeUpdate(sql);
} catch (Exception e) {
e.printStackTrace();
} finally {
DBUtil.close(state, conn);
}
if (a > 0) {
f = true;
}
return f;
}
public boolean zhanghao(String zhanghao) {
// TODO Auto-generated method stub
return false;
}
}
5.创建服务层，
package zzm;
import java.util.List;
/**
* ZzmService
* 服务层
* @author Zhao
*
*/
public class ZzmService {
ZzmDao cDao = new ZzmDao();
/**
* 添加
* @param Zzm
* @return
*/
public boolean add(Zzm zzm) {
boolean f = false;
if(!cDao.zhanghao(zzm.getZhanghao())) {
cDao.add(zzm);
f = true;
}
return f;
}
}
6.绘制界面操作（jsp）
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<link rel="stylesheet" type="text/css" href="css/nav.css">
<link rel="stylesheet" type="text/css" href="font/iconfont.css">
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/nav.js"></script>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message!=null && !"".equals(message)){
%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<div align="center">
<form action="ZzmServlet?method=add" method="post" onsubmit="return check()">
<table width="500px" height="650px"border="1" style="text-align:center">
<tr height="50px" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">登录账号:</font></td>
<td width="400"><input id="zhanghao" name="zhanghao" placeholder="请输入账号"/></td>
</tr>
<tr height="50px" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">登录密码:</font></td>
<td width="400"><input type="password" name="password" placeholder="请输入密码"/></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">性别:</font></td>
<td><select id="sex" name="sex" >
<option value="男">男</option>
<option value="女">女</option>
</select></td>
</tr>
<tr height="50px" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">姓名:</font></td>
<td width="400"><input id="name" name="name" placeholder="请输入姓名"/></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">学号:</font></td>
<td width="400"><input id="number" name="number" placeholder="请输入学号"/></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">电子邮箱:</font></td>
<td width="400"><input id="mail" name="mail" placeholder="请输入邮箱" /></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">所在学院:</font></td>
<td width="400"><input id="xueyuan" name="xueyuan" placeholder="请输入学院名" /></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">所在专业:</font></td>
<td width="400"><input id="zhuanye" name="zhuanye" placeholder="请输入专业" /></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">所在班级:</font></td>
<td width="400"><input id="banji" name="banji" placeholder="请输入班级" /></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">入学年份:</font></td>
<td><select id="year" name="year" >
<option value="2015">2015</option>
<option value="2016">2016</option>
<option value="2017">2017</option>
<option value="2018">2018</option>
<option value="2019">2019</option>
</select></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">生源地:</font></td>
<td width="400"><input id="shengyuandi" name="shengyuandi" placeholder="请输入生源地" /></td>
</tr>
<tr height="100" align="center" bgcolor="#FFFFCC">
<td width="100"><font color="black"style="font-family:宋体;">备注:</font></td>
<td width="400"><input id="beizhu" name="beizhu" placeholder="无" /></td>
</tr>
<tr height="50" align="center" bgcolor="#FFFFCC">
<td width="400"><button type="submit" >添加</button></td>
<td width="400"><input type="reset" value="重新输入" /></td>
</tr>
</form>
</div>
<script type="text/javascript">
function check() {
var zhanghao = document.getElementById("zhanghao");
var password = document.getElementById("password");
var number = document.getElementById("number");
var mail = document.getElementById("mail");
if (!zhanghao.value.match(/^[a-zA-Z]\w{5,11}$/)) {
alert("输入错误，请以英文字母开头 长度6-12");
num.focus();
return false;
}
else if (!password.value.match(/^[A-Za-z0-9]\w{7,20}$/)) {
alert(" 密码由八位及其以上以上英文和数字组成");
mima.focus();
return false;
}
else if(number.value<"20180000"|| number.value>"20189999")
{
alert(" 学号由2018开头的八位组成");
number.focus();
return false;
}
else if (!mail.value.match(/^[a-z0-9]+([._\\-]*[a-z0-9])*@([a-z0-9]+[-a-z0-9]*[a-z0-9]+.){1,63}[a-z0-9]+$/)) {
alert(" 邮箱格式错误");
mail.focus();
return false;
}
}
</script>
</body>
</html>
界面：
实验总结：
java web的一些基础功能已经可以实现。
数据库的连接操作目前已经可以很好的实现；
第一次java web 小测验做的还行
如果按独立搞的不查询 可以得到7分左右；
以后要多多练习 java web小程序的编写！
原文地址：https://www.cnblogs.com/zzmds/p/11715208.html
时间： 2024-11-04 16:17:46