zhuce.jsp

这个是用jsp做的一个系统。不过我没调出来

<%@ page contentType="text/html; charset=gb2312" import="java.sql.*" errorPage="" %>
<script type=text/javascript>
function trim(str)      
{      
    var t = str.replace(/(^\s*)|(\s*$)/g, "");  // 用正则表达式将前后空格        
    return t.replace(/(^　*)|(　*$)/g, "");        // 用空字符串替代。      
}   

var xmlHttp;
function createXMLHttpRequest(){
   if(window.ActiveXObject){
     xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
   }
   else if(window.XMLHttpRequest){
      xmlHttp=new XMLHttpRequest();
   } 
}
function validate(){
   createXMLHttpRequest();
   var name=document.getElementById("username").value;
   var pass=document.getElementById("passname").value;
   var mailname=document.getElementById("mailname").value;
   var str="name="+name+"&pass="+pass+"&mailname="+mailname;
   var url="zhuce1.jsp";
   xmlHttp.open("POST",url,true);
   xmlHttp.onreadystatechange=callback;
   xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");  
   xmlHttp.send(str);
}
function callback(){
   if(xmlHttp.readyState==4){
       var s=xmlHttp.responseText;
       if(trim(s)==1){
               alert("用户注册成功，即将转向首页");
               clear();
           } 
       if(trim(s)==2){
              var ta="<font color='red'>该名称在数据库中已存在，请重新输入</font>"
              document.getElementById("res").innerHTML=ta;
              document.getElementById("username").value=""; 
            }
       if(trim(s)==0){
              alert("产生异常");
           }
    }
}
function clear(){
	   document.getElementById("username").value=""; 
           document.getElementById("passname").value=""; 
           document.getElementById("passname2").value=""; 
           document.getElementById("mailname").value=""; 
}


function checkPassword(e)
{
	var ok = "1234567890qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM_.-";
	for(var i=0; i<e.length; i++)
	{
		if (ok.indexOf(e.charAt(i))<0) 
		{
			return false;
		}
	}
	return true;
}
function checkEmail(e){
	var ok = "1234567890qwertyuiop[]asdfghjklzxcvbnm.+@-_QWERTYUIOPASDFGHJKLZXCVBNM";
	for(var i=0; i<e.length; i++){
		if (ok.indexOf(e.charAt(i))<0) {
			return false;
		}
	}
	if(e.indexOf("@")<=0){
		return false;
	}
	if(e.indexOf(".")<=0){
		return false;
	}	
	if(e.indexOf("@")>e.lastIndexOf(".")){
	    return false;
	}
	return true;
}

function validate_form()
{
	if(document.form1.username.value == "")
	{
		alert("昵称不能为空!");
		return false;
	}
        if(bytelength(document.form1.username.value)<1||bytelength(document.form1.username.value)>20)
	{
		alert("您输入的昵称不合法!");
		return false;
	}
        if(document.form1.passname.value == "")
	{
		alert("输入密码不能为空!");
		return false;
	}
       if(checkPassword(document.form1.passname.value)==false)
	{
		alert("您输入的密码不合法!");
		return false;	
	}
	if(bytelength(document.form1.passname.value)<6||bytelength(document.form1.passname.value)>16)
	{
		alert("您输入的密码不合法!");
		return false;
	}
	if(document.form1.passname.value!=document.form1.passname2.value)
	{
		alert("确认密码不一致!");
		return false;		
	}
       if(document.form1.mailname.value == "")
	{
		alert("电子邮件不能为空!");
		return false;
	}
       if(checkEmail(trim(document.form1.mailname.value))==false)
	{
		alert("您输入的Email不合法!");
		return false;
	}
       return true;
}
function  bytelength(szString)
{
	return szString.replace(new RegExp("[^\x00-\xff]", "g"), "  ").length;
}
function reg()
{
	if(validate_form()==false)
		return;
	validate();
}
</script>
<h3 align=center>用户注册</h3>
<table border="1" width="80%" align="center">
<form name="form1" method="post" >
<tr><td width="26%">昵称:</td><td><input name="username" id="uesername"><div id="res"></div>允许输入汉字，长度为1－20个字符</td></tr>
<tr><td>密码:</td><td><input type="password" name="passname" id="passname">由数字、字母(区分大小写)、减号、点或下划线组成。长度为6～16位</td></tr>
<tr><td>确认密码:</td><td><input type="password" name="passname2" id="passname2"></td></tr>
<tr><td>E-mail地址:</td><td><input name='mailname' id='mailname'  value="[e-mail]"></td></tr>
<tr><td><input type="button" value="提交" onclick="reg()" /></td><td><input type="reset" value="重填"/></td></tr>
</form>
</table>
<div id="display"></div>