import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class RegisterBean {
private String userName = "";
private String errorName = "";
private String age = "";
private String errorAge = "";
private String email = "";
private String errorEmail = "";
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getErrorName() {
return errorName;
}
public void setErrorName(String errorName) {
this.errorName = errorName;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getErrorAge() {
return errorAge;
}
public void setErrorAge(String errorAge) {
this.errorAge = errorAge;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getErrorEmail() {
return errorEmail;
}
public void setErrorEmail(String errorEmail) {
this.errorEmail = errorEmail;
}
public boolean nameChecked(){
//验证
String regex ="^[a-zA-Z0-9]{6,15}$";
Pattern pattern = Pattern.compile(regex);
Matcher matcher =pattern.matcher(this.userName);
if ( matcher.matches()) {
this.errorName="";
return true;
}else{
this.errorName="用户名必须是6-15个字母或数字组成";
this.userName="";
}
return false;
}
public boolean emailChecked(){
String regex ="^[A-z0-9]{1,}@[A-z]{1,}.(com|org)$";
Pattern pattern = Pattern.compile(regex);
Matcher matcher =pattern.matcher(this.email);
if (matcher.matches()) {
this.errorEmail="";
return true;
}
else{
this.errorEmail="邮箱不合法";
this.email="";
}
return false;
}
//验证年龄
public boolean ageChecked(){
String regex ="^[0-9]{2}$";
Pattern pattern = Pattern.compile(regex);
Matcher matcher =pattern.matcher(this.age);
if (matcher.matches()) {
this.errorAge="";
return true;
}
else{
this.errorAge="年龄必须是0-9 的一到两位数";
this.age="";
}
return false;
}
public boolean check(){
boolean a = false ;
boolean b = false ;
boolean c = false ;
a=nameChecked();
b=emailChecked();
c=ageChecked();
if(a&&b&&c){
return true;
}else {
return false;
}
}
}
______Register.jsp_____________________________________________________________________________
<%@ page language= "java" contentType="text/html;charset=UTF-8" %>
<jsp:useBean id = "register" scope="session" class="com.lovo.javaBean.RegisterBean"/>
<html>
<head>
<meta charset="utf-8">
<title>注册</title>
</head>
<body>
<!-- 计算器表单数据填写 -->
<form action="RegisterServlet.do" method="post" >
<table>
<tr>
<td>用户名：</td>
<td><input type="text" name="userName" value=<%=register.getUserName()%>></td>
<td><%=register.getErrorName() %></td>
</tr>
<tr>
<td>年 龄：</td>
<td><input type="text" name="age" value=<%=register.getAge() %>></td>
<td><%=register.getErrorAge() %></td>
</tr>
<tr>
<td>邮 箱:</td>
<td><input type="text" name="email" value=<%=register.getEmail() %>></td>
<td><%=register.getErrorEmail() %></td>
</tr>
<br>
<tr>
<td><input type="submit" value="注册"></td>
<td><input type="submit" value="重置"></td>
</tr>
</table>
</form>
</body>
</html>
__________RegisterServlet_______________________________________________________________________
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 javax.servlet.http.HttpSession;
import com.lovo.javaBean.RegisterBean;
/**
* Servlet implementation class RegisterServlet
*/
@WebServlet("/RegisterServlet.do")
public class RegisterServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public RegisterServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
String userName=request.getParameter("userName");
String age=request.getParameter("age");
String email= request.getParameter("email");
RegisterBean registerBean= new RegisterBean();
registerBean.setUserName(userName);
registerBean.setAge(age);
registerBean.setEmail(email);
HttpSession session = request.getSession();
session.setAttribute("register", registerBean);
if (registerBean.check()) {
request.getRequestDispatcher("RegisterSuccess.jsp").forward(request, response);
}else {
request.getRequestDispatcher("Register.jsp").forward(request, response);
}
}
}
__RegisterSuccess.jsp_____________________________________________________________________________
<%@ page language= "java" contentType="text/html;charset=UTF-8" %>
<jsp:useBean id = "register" scope="session" class="com.lovo.javaBean.RegisterBean"/>
<html >
<head>
<meta charset="UTF-8">
<title>注册成功</title>
</head>
<body>
<h3>注册成功</h3>
<jsp:setProperty property="*" name="register" /><%--获取表单数据 --%>
<h3>用户名：<%=register.getUserName()%></h3>
<h3>年龄：<%=register.getAge() %></h3>
<h3>邮箱：<%=register.getEmail()%></h3>
</body>
</html>