[code]表单验证_2.用java在服务器端验证
因为做的是wap端的网站,所以不能用到js,所以验证的工作就要放在服务器端,太麻烦了.
regedit.jsp页面
处理的servlet.
工具类
思路是servlet传参数回表单页面,控制错误信息的显示.
regedit.jsp页面
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jstl/core"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8"/>
<title>注册页面</title>
<jsp:include page="include/css.jsp" flush="true" />
</head>
<body>
<jsp:include page="include/head2.jsp" flush="true" />
<form action="<%=basePath%>servlet/GetCheckno">
<div>
手机号：<br/>
<c:choose>
<c:when test="${mobno2==1}">
<span style="color:red;"><b>手机号码格式不正确</b></span><br/>
</c:when>
<c:when test="${mobno2==3}">
<span style="color:red;"><b>注册手机不能为空</b></span><br/>
</c:when>
</c:choose>
<input type="text" name="mobile" value="" /><br/>
<input class="submit" type="submit" value="获取验证码" />
</div>
</form>
<form action="<%=basePath%>servlet/RegeditServlet" method=post>
<div>
用户名：<br/>
<c:choose>
<c:when test="${userno==1}">
<span style="color:red;"><b>会员名在5-20个字符内，仅可由中英文、数字、下划线组成</b></span><br/>
</c:when>
<c:when test="${userno==2}">
<span style="color:red;"><b>该用户名已经存在</b></span><br/>
</c:when>
<c:when test="${userno==3}">
<span style="color:red;"><b>用户名不能为空</b></span><br/>
</c:when>
</c:choose>
<input type="text" name="username" value="" /><br/>
用户密码：<br/>
<c:choose>
<c:when test="${psw1no==1}">
<span style="color:red;"><b>密码最少不能少于6位字符</b></span><br/>
</c:when>
<c:when test="${psw1no==3}">
<span style="color:red;"><b>密码不能为空</b></span><br/>
</c:when>
</c:choose>
<input type="password" name="password" value="" /><br/>
确认密码：<br/>
<c:choose>
<c:when test="${psw2no==1}">
<span style="color:red;"><b>两次输入的密码不相同</b></span><br/>
</c:when>
<c:when test="${psw2no==3}">
<span style="color:red;"><b>确认密码不能为空</b></span><br/>
</c:when>
</c:choose>
<input type="password" name="password2" value="" /><br/>
注册手机：<br/>
<c:choose>
<c:when test="${mobno==1}">
<span style="color:red;"><b>手机号码格式不正确</b></span><br/>
</c:when>
<c:when test="${mobno==3}">
<span style="color:red;"><b>注册手机不能为空</b></span><br/>
</c:when>
</c:choose>
<input type="text" name="mobile" value="" /><br/>
验证码：<br/>
<c:choose>
<c:when test="${chkno==1}">
<span style="color:red;"><b>验证码格式不正确</b></span><br/>
</c:when>
<c:when test="${chkno==3}">
<span style="color:red;"><b>验证码不能为空</b></span><br/>
</c:when>
</c:choose>
<input type="text" name="checkno" value="" /><br/>
注册邮箱：<br/>
<c:choose>
<c:when test="${email==1}">
<span style="color:red;"><b>邮箱格式不正确</b></span><br/>
</c:when>
<c:when test="${email==3}">
<span style="color:red;"><b>邮箱不能为空</b></span><br/>
</c:when>
</c:choose>
<input type="text" name="email" value="" /><br/>
<a href="<%=basePath%>servlet/ShowGreetMent">阅读服务协议</a><br/>
<input class="submit" type="submit" value="同意并注册" />
</div>
</form>
<jsp:include page="include/foot.jsp" flush="true" />
</body>
</html>
处理的servlet.
package com.mobile.web.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.log4j.MDC;
import com.mobile.dao.jdbc.AccountDaoJdbc;
import com.mobile.dao.jdbc.ChecknoJdbc;
import com.mobile.object.Account;
import com.mobile.service.impl.AccountManagerImpl;
import com.zhao.util.UtilBean;
public class RegeditServlet extends HttpServlet {
private Log logger = LogFactory.getLog(this.getClass());//日志操作
private AccountDaoJdbc accountj;
private ChecknoJdbc checkj;
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request,response);
}
/*
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
boolean flat = true;
int fail = 0;
String mobile = request.getParameter("mobile");
String checkno = request.getParameter("checkno");
String username = request.getParameter("username");
String password = request.getParameter("password");
String password2 = request.getParameter("password2");
String email = request.getParameter("email");
String checknoSystem = checkj.getCheckno(mobile);
String address="/RegeditSuccess.jsp";
if(checkno.equals(checknoSystem)&&password.equals(password2))
{
Account account = new Account();
account.setMob(mobile);
account.setUser(username);
account.setPsw(password);
account.setEmail(email);
accountj.create(account);
}
else
{
address = "/RegeditFail.jsp";
if(!password.equals(password2)){
fail=1;//两次密码不同
address=address+"?fail=1";
}
else if(!checkno.equals(checknoSystem))
{
fail=2;//验证密不对
address=address+"?fail=2";
}
}
RequestDispatcher dispatcher = request.getRequestDispatcher(address);
dispatcher.forward(request, response);
}
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
MDC.put("method", "用户操作");//日志操作
String address="/RegeditSuccess.jsp";
boolean flat = true;
int userno = 0;
int psw1no =0 ;
int psw2no =0;
int mobno =0;
int chkno =0;
int emailno =0;
String mobile = request.getParameter("mobile");
String checkno = request.getParameter("checkno");
String username = request.getParameter("username");
String password = request.getParameter("password");
String password2 = request.getParameter("password2");
String email = request.getParameter("email");
if(username.equals("")||username==null)
{
userno=3;
flat=false;
}
else
{
if(!UtilBean.checkUser(username))
{
userno=1;
flat = false;
}
if(!AccountDaoJdbc.checkAccount(username))
{
userno=2;
flat = false;
}
}
if(password.equals("")||password==null)
{
psw1no=3;
flat = false;
}
else
{
if(!UtilBean.checkPsw(password))
{
psw1no=1;
flat = false;
}
}
if(password2.equals("")||password2==null)
{
psw2no=3;
flat = false;
}
else
{
if(!password.equals(password2))
{
psw2no=1;
flat = false;
}
}
if(mobile.equals("")||mobile==null)
{
mobno=3;
flat = false;
}
else
{
if(!UtilBean.checkMobile(mobile))
{
mobno=1;
flat = false;
}
}
if(checkno.equals("")||checkno==null)
{
chkno=3;
flat = false;
}
else
{
String checknoSystem = checkj.getCheckno(mobile);
if(!checkno.equals(checknoSystem))
{
chkno=1;
flat = false;
}
}
if(email.equals("")||email==null)
{
emailno=3;
flat = false;
}
else
{
if(!UtilBean.checkEmail(email))
{
emailno=1;
flat = false;
}
}
//System.out.println(emailno);
if(flat==true)
{
Account account = new Account();
account.setMob(mobile);
account.setUser(username);
account.setPsw(password);
account.setEmail(email);
accountj.create(account);
MDC.put("username",username);//日志操作
MDC.put("ip","127.0.0.1");//日志操作
MDC.put("system", "前台WAP端");//日志操作
logger.info("用户:"+username+"注册");//日志操作
address="/RegeditSuccess.jsp";
}
else
{
address = "/regedit.jsp";
request.setAttribute("userno", userno);
request.setAttribute("psw1no", psw1no);
request.setAttribute("psw2no", psw2no);
request.setAttribute("mobno", mobno);
request.setAttribute("chkno", chkno);
request.setAttribute("emailno", emailno);
}
RequestDispatcher dispatcher = request.getRequestDispatcher(address);
dispatcher.forward(request, response);
}
public void init() throws ServletException {
accountj = new AccountDaoJdbc();
checkj = new ChecknoJdbc();
}
}
工具类
package com.zhao.util;
import java.sql.Timestamp;
import java.text.DecimalFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class UtilBean {
/**
* 判断字符串是否是整数
*/
public static boolean isInteger(String value) {
try {
Integer.parseInt(value);
return true;
} catch (NumberFormatException e) {
return false;
}
}
//得到前几天，后几天（月，年）的时间
//年月日标记,正数前几天,负数后几天
public static Timestamp getBeforeTime(int nyr,int nyrNum)
{
long newlong = System.currentTimeMillis();
Calendar calendar = GregorianCalendar.getInstance();
calendar.setTimeInMillis(newlong);
calendar.add(nyr,nyrNum);
Timestamp time = new Timestamp(calendar.getTimeInMillis());
//System.out.println(UtilBean.getBeforeTime(Calendar.DAY_OF_MONTH, 100));
//calendar.add(Calendar.MONTH, 1)
return time;
}
public static boolean isFloat(String value) {
try {
Float.parseFloat(value);
return true;
} catch (NumberFormatException e) {
return false;
}
}
public static String getSixIntStr()
{
Random r = new Random();
int sint = r.nextInt(1000000);
DecimalFormat dfInt=new DecimalFormat("000000");
String str = dfInt.format(sint);
return str;
}
public static boolean regex(String regex, String value)
{
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(value);
return m.find();
}
public static boolean checkMobile(String value)
{
//手机号码
String regex = "\\d{11}"; //11位
return regex(regex,value);
}
public static boolean checkUser2(String value)
{
String regex = "[a-zA-Z1-9_]{5,20}";
return regex(regex,value);
}
public static boolean checkUser(String value)
{
String regex = "\\w{5,20}";
return regex(regex,value);
}
public static boolean checkEmail(String value)
{
String regex = "[\\w\\.\\-]+@([\\w\\-]+\\.)+[\\w\\-]+";
return regex(regex,value);
}
public static boolean checkPsw(String value)
{
String regex = "\\w{6}";
return regex(regex,value);
}
public static boolean checkStr(String content,String filter)
{
//要过虑的字符,用|分隔
Matcher m=Pattern.compile(filter).matcher(content);
if(m.find())
{
return true; //有非法字符
}
else
{
return false;
}
}
public static boolean checkPostNo(String value)
{
String regex = "[0-9]{6}";
return regex(regex,value);
}
public static boolean checkCertificate(String value)
{
String regex = "^[0-9]{15}$|^[0-9]{18}$";
return regex(regex,value);
}
public static boolean checkTelno(String value)
{
//电话
String regex = "^[0-9]{6,20}$";
return regex(regex,value);
}
public static boolean checkAddress(String value)
{
//地址
//String regex = "^\\w{1,100}$";
//return regex(regex,value);
if(value.length()<100&&value.length()>0)
return true;
return false;
}
public static boolean checkPerson(String value)
{
//String regex = "^\\w{1,20}$";
//return regex(regex,value);
if(value.length()<20&&value.length()>0)
return true;
return false;
}
public static boolean isFloat2(String value) //价格不超过10位数字(可含两位小数)
{
String regex ="^[0-9]{1,10}$|^[0-9]{1,9}[.][0-9]{1}$|^[0-9]{1,8}[.][0-9]{1,2}$";
return regex(regex,value);
}
public static boolean isFloat7(String value) //价格不超过7位数字(可含两位小数)
{
String regex ="^[0-9]{1,7}$|^[0-9]{1,6}[.][0-9]{1}$|^[0-9]{1,5}[.][0-9]{1,2}$";
return regex(regex,value);
}
public static boolean String20(String value)
{
//String regex = "^\\w{1,20}$";
//return regex(regex,value);
if(value.length()<20&&value.length()>0)
return true;
return false;
}
public static boolean String7int(String value)
{
//String regex = "^\\w{1,20}$";
//return regex(regex,value);
if(value.length()<7&&value.length()>0&&isInteger(value))
return true;
return false;
}
public static boolean String500(String value)
{
if(value.length()<500&&value.length()>0)
return true;
return false;
}
public static boolean String30(String value)
{
if(value.length()<30&&value.length()>0)
return true;
return false;
}
public static boolean checkNum(String value)
{
String regex = "^[0-9]{1,4}$";
return regex(regex,value);
}
public static boolean checkskren(String value)
//收货人
{
//String regex = "^\\w{1,20}$";
//return regex(regex,value);
if(value.length()<25&&value.length()>0)
return true;
return false;
}
}
思路是servlet传参数回表单页面,控制错误信息的显示.