添加学生信息（java wb）

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；

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；

3、性别：要求用单选框或下拉框实现，选项只有“男”或“女”；

4、学号：要求八位数字组成，前四位为“2018”开头，输入自己学号；

5、姓名：输入自己的姓名；

6、电子邮箱：要求判断正确格式xxxx@xxxx.xxxx；

7、点击“添加”按钮，将学生个人信息存储到数据库中；

8、可以演示连接上数据库。

一、源代码如下：

dao.java

package test;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import test.User;
import test.DBUtil;;

public class dao
{

//娣诲姞
//娣诲姞鍏�rade琛ㄩ噷

public boolean insert(User user)
{
String sql="insert into resgist(username,password,sex,name,number,email,clas,xi,banji,address,iphone,beizhu) values('"+user.getUsername()+"','"+user.getPassword()+"','"+user.getSex()+"','"+user.getName()+"','"+user.getNumber()+"','"+user.getEmail()+"','"+user.getClas()+"','"+user.getXi()+"','"+user.getBanji()+"','"+user.getAddress()+"','"+user.getIphone()+"','"+user.getBeizhu()+"')";
//insert璇�彞锛�
//insert INTO table_name (column1,column2,column3,...) VALUES (value1,value2,value3,...);
//娉ㄦ剰锛歩nsert杩欓噷 values(100,'鍚存灄绁�','"+bianliang+"')锛屾暟瀛楀彲浠ョ洿鎺ヤ笂锛屽瓧绗︿覆鐨勮瘽鐢� '',鍙橀噺鐨勮瘽瑕佺敤 '"++"'

Connection conn=DBUtil.getConn();//鏁版嵁搴撹繛鎺ワ紝鍔犺浇椹卞姩
Statement state=null;//鏁版嵁搴撴搷浣�
try
{
state=conn.createStatement();//瀹炰緥鍖朣tatement瀵硅薄,鏂逛究瀵箂ql璇�彞杩涜�鎿嶄綔
state.executeUpdate(sql);
//鎵ц�鏁版嵁搴撴洿鏂版搷浣滅敤浜庢墽琛孖NSERT銆乁PDATE鎴朌ELETE璇�彞浠ュ強SQLDDL锛堟暟鎹�畾涔夎�瑷�锛夎�鍙ワ紝
//渚嬪�CREATETABLE鍜孌ROPTABLE,锛堝垱寤鸿〃鍜屽垹闄よ〃锛�
}catch(Exception e)//褰搕ry璇�彞涓�嚭鐜板紓甯告椂锛屼細鎵ц�catch涓�殑璇�彞
{
e.printStackTrace();//鎹曡幏寮傚父鐨勮�鍙�
}
finally //finally浣滀负寮傚父澶勭悊鐨勪竴閮ㄥ垎锛屽畠鍙�兘鐢ㄥ湪try/catch璇�彞涓�紝骞朵笖闄勫甫涓�涓��鍙ュ潡锛岃〃绀鸿繖娈佃�鍙ユ渶缁堜竴瀹氫細琚�墽琛岋紙涓嶇�鏈夋病鏈夋姏鍑哄紓甯革級锛岀粡甯歌�鐢ㄥ湪闇�瑕侀噴鏀捐祫婧愮殑鎯呭喌涓嬨��
{
DBUtil.close(state, conn); //close閲婃斁璧勬簮
}
return false;
}

// //鍒犻櫎
// //鏍规嵁ID鍒犻櫎
//
// public boolean delete(int id)
// {
// String sql="delete from grade_student where ID='"+id+"'";
// //鍒犻櫎璇�彞锛�
// //delete from table_name where some_colume=some_value
//
// Connection conn=DBUtil.getConn();
// Statement state=null;
//
// try
// {
// state=conn.createStatement();
// state.executeUpdate(sql);
// }catch (Exception e)
// {
// e.printStackTrace();
// }
// finally
// {
// DBUtil.close(state, conn);
// }
// return false;
// }
//
// //淇�敼
// //鏍规嵁瀛﹀彿淇�敼
//
// public boolean update(Grade grade)
// {
// String sql="update grade_student set Chinese='"+grade.getChinese()+"',Math='"+grade.getMath()+"',English='"+grade.getEnglish()+"',SUM='"+grade.getSUM()+"' where ID='"+grade.getID()+"' ";
// //update璇�彞锛�
// //update table_name set column1=value1,column2=value2 where some_column=some_value;
//
// Connection conn=DBUtil.getConn();
// Statement state=null;
//
// try
// {
// state=conn.createStatement();
// state.executeUpdate(sql);
// }catch (SQLException e)
// {
// e.printStackTrace();
// }
// finally
// {
// DBUtil.close(state, conn);
// }
// return false;
// }
//
// //鏌ヨ�
// //鏌ヨ�鍏ㄩ儴骞跺瓨鍏�ist
// //List鎸囩殑鏄�泦鍚�.<>鏄�硾鍨�,閲岄潰鎸囧畾浜嗚繖涓�泦鍚堜腑瀛樻斁鐨勬槸浠�涔堟暟鎹�
// //娉涘瀷鏄�▼搴忚�璁¤�瑷�鐨勪竴绉嶇壒鎬с��
// //鍏佽�绋嬪簭鍛樺湪寮虹被鍨嬬▼搴忚�璁¤�瑷�涓�紪鍐欎唬鐮佹椂瀹氫箟涓�浜涘彲鍙橀儴鍒嗭紝
// //浣嗘槸锛岄偅浜涢儴鍒嗗湪浣跨敤鍓嶅繀椤讳綔鍑烘寚鏄庛��
//
// public List<User>list()
// {
// String sql="select * from grade_student order by ID ASC";
// //select璇�彞
// //select * from tabel_name 杩欐槸鏌ヨ�鎵�鏈夛紝鑻ヨ�鏌ヨ�鏌愪竴鍒�
// //select column1_name,column2_name,column3_name from table_name
//
// List<User>list=new ArrayList<>();
// //缁欓泦鍚坙ist鍒涢�狅紙new锛変竴涓�瓨鍌ㄧ┖闂寸敤浜庡瓨鏀炬暟鎹�
//
// Connection conn=DBUtil.getConn();
// Statement state=null;
// ResultSet rs=null;
//
// try
// {
// state=conn.createStatement();
// rs=state.executeQuery(sql);
// User user=null;
// while(rs.next()) //杩欓噷琛ㄧず锛屽綋rs.next()鏈夊�煎緱鏃跺�欙紝鍗虫敹鍒版煡璇㈢粨鏋�
// {
// String id=rs.getString("ID"); //娉ㄦ剰锛氳繖閲岀敤鍙屽紩鍙凤紝ID鏄�〃grade_student閲岀殑ID鍒�
// String name=rs.getString("NAME");
// int Chinese=rs.getInt("Chinese");
// int Math=rs.getInt("Math");
// int English=rs.getInt("English");
// int SUM=rs.getInt("SUM");
// user=new User(username,password,name,,English,SUM);
// list.add(user); //琛ㄧず锛屾妸bean閲岀殑鏁版嵁瀛樺叆鍒發ist褰撲腑
// }
// }
// catch (SQLException e)
// {
// e.printStackTrace();
// }
// finally
// {
// DBUtil.close(state, conn);
// }
// return list;
// }
//
//楠岃瘉娉ㄥ唽鏄�惁鍞�竴
public boolean username(String username) {

boolean flag = false;

String sql = "select username from resgist where username = '" + username + "'";
Connection conn = DBUtil.getConn();
Statement state = null;
ResultSet rs = null;

try {
state = conn.createStatement();
rs = state.executeQuery(sql);
//瑕佺敤statement绫荤殑executeQuery()鏂规硶鏉ヤ笅杈緎elect鎸囦护浠ユ煡璇㈡暟鎹�簱锛�
//executeQuery()鏂规硶浼氭妸鏁版嵁搴撳搷搴旂殑鏌ヨ�缁撴灉瀛樻斁鍦≧esultSet绫诲�璞′腑渚涙垜浠�娇鐢ㄣ��
while (rs.next()) {
flag = true;
}
}
catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtil.close(rs, state, conn);
}
return flag;
}
}

DBUtil.java

package test;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**
* 鏁版嵁搴撹繛鎺ュ伐鍏�
* @author 鍚存灄绁�
*
*/
public class DBUtil {
//鑱旂粨瀛楃�涓� //鏁版嵁搴撳悕test
public static String db_url = "jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf-8";
//鏁版嵁搴撶敤鎴峰悕
public static String db_user = "root";
//鏁版嵁搴撳瘑鐮佸悕
public static String db_pass = "123";

public static Connection getConn () {

//澹版槑涓庢暟鎹�簱鐨勮繛鎺ュ苟瀹炰緥鍖栦负null
Connection conn = null;

try {
//椹卞姩绋嬪簭鍚�
Class.forName("com.mysql.jdbc.Driver");//杩炴帴鏁版嵁搴�
//鍏蜂綋鍦拌繛鎺ュ埌鏁版嵁搴撯�斺�旇仈鎺ュ瓧绗︿覆锛堟暟鎹�簱鍚嶏級锛岃仈鎺ョ敤鎴峰悕锛岃仈鎺ュ瘑鐮佸悕
conn = DriverManager.getConnection(db_url, db_user, db_pass);
} catch (Exception e) {
e.printStackTrace();
}

return conn;
}

/**
* 鍏抽棴杩炴帴
* @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();
}
}
}

}

service.java

package test;

import java.util.List;
import test.dao;
import test.User;

/**
* CourseService
* 鏈嶅姟灞�
* @author Hu
*
*/

//service灞傜浉褰撲簬涓�涓�皝瑁呭眰锛屽皝瑁呴偅浜涗笌涓氬姟鐩稿叧鐨勯�氱敤鏁版嵁鎺ュ彛

public class service
{
dao cdao=new dao();
/**
* 娣诲姞
* @param course
* @return
*/
public boolean insert(User user)
{
boolean f=false;
if(!cdao.username(user.getUsername()))
{
cdao.insert(user);
f=true;
}
return f;
}

//鍒犻櫎

// public void delete(int id)
// {
// cdao.delete(id);
// }
//
// //淇�敼
//
// public void update (Grade grade)
// {
// cdao.update(grade);
// }
//
// //閫氳繃ID寰楀埌涓�涓狢ourse
//
// //閫氳繃name寰楀埌涓�涓狢ourse
//
// //鏌ユ壘
//
//
// //鍏ㄩ儴鏁版嵁閬嶅巻
//
// public List<Grade>list()
// {
// return cdao.list();
// }
}

servlet.java

package test;

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;

import test.User;
import test.service;

@WebServlet("/servlet")
public class servlet extends HttpServlet //缁ф壙鐨勬槸 HttpServlet鏂规硶锛屽拰缃戦〉浜や簰鐨勬柟娉�
{
private static final long serialVersionUID = 1L;

service service=new service();

//鏂规硶閫夋嫨

protected void service(HttpServletRequest req,HttpServletResponse resp)throws ServletException, IOException
{
//req鏄疪equest锛堣�姹傦級鐨勭畝鍐欙紝鎸囩殑鏄�粠jsp/html鐣岄潰璇锋眰鍥炴暟鎹�紝鍗� jsp/html 鈫� 搴曞眰
//resp鏄疪esponse锛堝洖绛旓級鐨勭畝鍐欙紝鎸囩殑鏄�彂閫佺粰jsp/html鐨勬暟鎹�紝锛屽嵆搴曞眰鈫� jsp/html

req.setCharacterEncoding("utf-8");//璁剧疆浠巎sp鎴朒TML涓��姹傛暟鎹�殑鍊硷紝涔熷氨鏄��缃�负涓�枃锛岄槻姝�贡鐮�
String method=req.getParameter("method");//getParameter()鑾峰彇鐨勬槸瀹㈡埛绔��缃�殑鏁版嵁銆�
if ("insert".equals(method)) {
insert(req, resp);
}
// //澧�
// else if ("delete".equals(method)) {
// delete(req, resp);
// }
// //鍒�
// else if ("update".equals(method)) {
// update(req, resp);
// }
// //鏀�
// else if ("list".equals(method)) {
// list(req, resp);
// }
// //鏌�
}

//娣诲姞

private void insert(HttpServletRequest req,HttpServletResponse resp)throws IOException, ServletException
{
//棣栧厛璇诲彇鍓嶇�缃戦〉鏁版嵁骞跺皢鏁版嵁瀛樺叆鎴戝垱寤虹殑grade瀛樺偍绌洪棿閲岋紝鍗� jsp/html 鈫� servlet

req.setCharacterEncoding("utf-8"); //浠庣綉椤佃幏寰楁暟鎹�
String username=req.getParameter("username");
String password=req.getParameter("password");
//鍥犱负req.getParameter鍙�兘鑾峰緱String绫诲瀷鐨勬暟鎹�
//鎵�浠ヤ笅闈㈤渶瑕佺敤Integer.parseInt锛坮eq.getParameter()锛夋潵鎶奡tring绫诲瀷鐨勬暟鎹�浆鎹㈡垚鎴戜滑鎵�闇�鐨刬nt鏁版嵁
String sex=req.getParameter("sex");
String name=req.getParameter("name");
String number=req.getParameter("number");
String email=req.getParameter("email");
String clas=req.getParameter("clas");
String xi=req.getParameter("xi");
String banji=req.getParameter("banji");
String address=req.getParameter("address");
String iphone=req.getParameter("iphone");
String beizhu=req.getParameter("beizhu");
User user=new User(username,password,sex,name,number,email,clas,xi,banji,address,iphone,beizhu);

//鍏舵�杩涜�鎶奼rade閲岀殑鏁版嵁涓庢坊鍔犲埌鏁版嵁搴撻噷锛屽嵆 servlet 鈫� mysql鏁版嵁搴�
//骞惰烦杞�紝req.getRequestDispatcher("add.jsp").forward(req, resp);杩欎竴姝ユ槸璺宠浆鍒板墠绔痡sp/html鐣岄潰

if(service.insert(user)) //濡傛灉娣诲姞鎴愬姛
{
req.setAttribute("message", "娣诲姞鎴愬姛");
//杩欓噷琛ㄧず锛屽湪req鐨勪綔鐢ㄥ煙涓��缃�竴涓猰assage鍙橀噺,鍙橀噺鍐呭�鏄�細娣诲姞鎴愬姛
//鐒跺悗锛屽綋璺宠浆鍒板畠涓嬩竴涓�晫闈㈡椂锛岃繖涓�綔鐢ㄥ煙閲岀殑鍊煎彲浠ラ�氳繃Object message =request.getAttribute("message")鎷垮嚭鏉ヤ娇鐢�
req.getRequestDispatcher("index.jsp").forward(req, resp);
//澶勭悊瀹屼簡锛屽垎鍙戝埌涓嬩竴涓狫SP椤甸潰鎴栬�呬笅涓�涓狝ction缁х画澶勭悊銆�
}
else
{
req.setAttribute("message", "娣诲姞閲嶅�,璇烽噸鏂拌緭鍏�");
req.getRequestDispatcher("fail.jsp").forward(req, resp);
}
}

// //鍒犻櫎delete
//
// private void delete(HttpServletRequest req,HttpServletResponse resp)throws IOException,ServletException
// {
// req.setCharacterEncoding("UTF-8");
// int id=Integer.parseInt(req.getParameter("id"));
// service.delete(id); //杩涜�鏁版嵁搴撶殑鍒犻櫎鎿嶄綔
// req.setAttribute("message", "鍒犻櫎鎴愬姛");
// req.getRequestDispatcher("servlet?method=list").forward(req, resp);
// }
//
// //淇�敼update
//
// private void update(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
// req.setCharacterEncoding("utf-8");
// String id=req.getParameter("id");
// int Chinese=Integer.parseInt(req.getParameter("Chinese"));
// int Math=Integer.parseInt(req.getParameter("Math"));
// int English=Integer.parseInt(req.getParameter("English"));
// int SUM=Integer.parseInt(req.getParameter("SUM"));
// Grade grade=new Grade(id,Chinese,Math,English,SUM);
// service.update(grade);//杩涜�鏁版嵁搴撶殑淇�敼鎿嶄綔
// req.setAttribute("message", "淇�敼鎴愬姛");
// req.getRequestDispatcher("servlet?method=list").forward(req,resp);
// //?method=list琛ㄧず浼犱竴涓�彨鍋歮ethod鐨勫弬鏁帮紝浠栫殑鍊兼槸list,浣犲彲浠ュ湪Servlet涓�敤request.getParam...鑾峰彇鍒般��
// }
//
//
// //鍏ㄩ儴
//
// private void list(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
// req.setCharacterEncoding("utf-8");
// List<Grade> grade_list = service.list();
// req.setAttribute("grade_list", grade_list);
// req.getRequestDispatcher("list.jsp").forward(req,resp);
// }
//

}

User.java

package test;

public class User
{
private String username;
private String password;
private String sex;
private String name;
private String number;
private String email;
private String clas;
private String xi;
private String banji;
private String address;
private String iphone;
private String beizhu;
public User(String username, String password,String sex,String name,String number,String email,String clas,String xi,String banji,String address,String iphone,String beizhu) {
this.username = username;
this.password = password;
this.sex = sex;
this.name = name;
this.number = number;
this.email = email;
this.clas = clas;
this.xi = xi;
this.banji = banji;
this.address = address;
this.iphone = iphone;
this.beizhu=beizhu;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getNumber() {
return number;
}
public void setNumber(String number) {
this.number = number;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getClas() {
return clas;
}
public void setClas(String clas) {
this.clas = clas;
}
public String getXi() {
return xi;
}
public void setXi(String xi) {
this.xi = xi;
}
public String getBanji() {
return banji;
}
public void setBanji(String banji) {
this.banji = banji;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getIphone() {
return iphone;
}
public void setIphone(String iphone) {
this.iphone = iphone;
}
public String getBeizhu() {
return beizhu;
}
public void setBeizhu(String beizhu) {
this.beizhu = beizhu;
}
}

fail.jsp

<%@ 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>
<body>
<h>添加失败</h>

</body>
</html>

index.jsp

register.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<title>Insert title here</title>
<meta charset="UTF-8">
<title>注册页面</title>
</head>
<body>
<%
Object message = request.getAttribute("message");
if(message!=null && !"".equals(message)){

%>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<div align="center">
<center> <h6 style="color: black;">注册</h6></center>

<form name = "form1" action="servlet?method=insert" method="post" onsubmit="return check_submit()">
<table>
<tr>
<td>登陆账号</td>
<td colspan="2"> <input type="text" id="username" name="username" maxlength="12" onblur="blur_id()" onfocus="focus_id()"/></td>
<td width="300"><div id="result"></td>
</tr>
<tr>
<td>登录密码</td>
<td colspan="2"> <input type="password" id="password" name="password" onblur="blur_pass()" onfocus="focus_pass()" /></td>
<td width="300"><div id="result1"></td>
</tr>
<tr>
<td>性别：</td>
<td colspan="2"><select name="sex"id="sex" >
<option value="男" >男</option>
<option value="女" >女</option>
</select></td>
</tr>
<tr>
<td>姓名</td>
<td colspan="2"><input type="text" id="name" name="name" /></td>
</tr>
<tr>
<td>学号</td>
<td colspan="2"><input type="text" id="number" name="number" /></td>
</tr>
<tr>
<td>邮箱</td>
<td colspan="2"><input type="email" id="email" name="email" ></td>
</tr>

<tr>
<td>所在学院：</td>
<td colspan="2"><input type="text" id="clas" name="clas" >
</td>
</tr>
<tr>
<td>所在系：</td>
<td colspan="2"><input type="text" id="xi" name="xi" >
</td>
</tr>
<tr>
<td>所在班级</td>
<td colspan="2"><input type="text" id="banji" name="banji"></td>
</tr>
<tr>
<td>入学年份</td>
<td colspan="2"><select name="address"id="address" >
<option value="1998" >1998</option>
<option value="1999" >1999</option>
</select>届</td>
</tr>
<tr>
<td>生源地</td>
<td colspan="2"><input type="text" id="iphone" name="iphone"></td>
</tr>
<tr>
<td>备注</td>
<td colspan="2"><input type="text" id="beizhu" name="beizhu"></td>
</tr>
<tr>
<td colspan="3"> <button type="submit" class="b">保   存</button>         
<button type="reset" class="b">重   置</button></td>

</tr>
</table>
</form>
</div>
<script type="text/javascript">
/*
表单验证
*/
var flag = false; // flag 如果为true（即用户名合法）就允许表单提交，如果为false（即用户名不合法）阻止提交
function focus_pass()
{
var nameObj = document.getElementById("result1");
nameObj.innerHTML = "由六位字符和数字组成";
nameObj.style.color="#999";
}
function blur_pass()
{
var nameObj = document.getElementById("result1");
// 判断用户名是否合法
var str2 = check_user_pass(document.form1.password.value);
nameObj.style.color="red";
if ("密码合法" == str2)
{
flag = true;
nameObj.innerHTML = str2;
}
else
{
nameObj.innerHTML = str2;
}
}

return str2;

}

// 当鼠标聚焦于用户名
function focus_phone()
{
// 找到后面的div, id = result_name
var nameObj = document.getElementById("result_name");
nameObj.innerHTML = "手机号不能包含特殊字符且为11位";
nameObj.style.color="#999";
}
// 当鼠标不聚焦于用户名input
function blur_phone()
{
// 找到id=result_name的div
var nameObj = document.getElementById("result_name");
// 判断用户名是否合法
var str2 = check_user_name(document.form1.no.value);
nameObj.style.color="red";
if ("手机号合法" == str2)
{
flag = true;
nameObj.innerHTML = str2;
}
else
{
nameObj.innerHTML = str2;
}

}
// 检查用户名是否合法合法就返回"该用户名合法"
function check_user_name(str)
{
var str2 = "手机号合法";
if ("" == str)
{
str2 = "手机号为空";
return str2;
}
else if (str.length!=11)
{
str2 = "手机号必须为11位";
return str2;
}
else if (check_other_char(str))
{
str2 = "不能含有特殊字符";
return str2;
}
return str2;
}
function check_firstword(str)
{ var arr = ["a", "b", "c", "d", "e", "f", "g", "h","i","j", "k", "l", "m", "n", "o", "p", "q","r", "s", "t", "u", "v", "w", "x", "y","z","A", "B", "C", "D", "E", "F", "G", "H","I","J", "K", "L", "M", "N", "O", "P", "Q","R","S", "T", "U", "V", "W", "X", "Y", "Z"];
for (var i = 0; i < arr.length; i++)
{
if (arr[i] == str.charAt(0))
{
return true;
}
}
return false;
}

// 验证用户名是否含有特殊字符
function check_other_char(str)
{
var arr = ["&", "\", "/", "*", ">", "<", "@", "!"];
for (var i = 0; i < arr.length; i++)
{
for (var j = 0; j < str.length; j++)
{
if (arr[i] == str.charAt(j))
{
return true;
}
}
}
return false;
}
// 根据验证结果确认是否提交
function check_submit()
{
if (flag == false)
{
return false;
}
return true;
}
</script>
</head>
</body>
</html>

二、运行结果：

三、数据库储存：