你的bean应该修改一下.
public boolean check_email(String email)
{
boolean right = true;
if(!check_str_char(email,"@")||!check_str_char(email,"."))
{
right=false;
}
return right;
}还有,你用check_str_char这个方法吗?如果只想简单判断一下是否包含@,和.字符可能用indexOf(),见意改成正则.用法:
<jsp:useBean id="taxbean" scope="application" class="test.TaxRate"/>
<%
String mail = "[email protected]";
boolean isTrue = taxbean.check_email(mail);
out.println(isTrue);
%>
public boolean check_email(String email)
{
boolean right = true;
if(!check_str_char(email,"@")||!check_str_char(email,"."))
{
right=false;
}
return right;
}还有,你用check_str_char这个方法吗?如果只想简单判断一下是否包含@,和.字符可能用indexOf(),见意改成正则.用法:
<jsp:useBean id="taxbean" scope="application" class="test.TaxRate"/>
<%
String mail = "[email protected]";
boolean isTrue = taxbean.check_email(mail);
out.println(isTrue);
%>
不过,检查email用如此简单的方法可以会导致大量的非法email录入
建议用正则表达式重写以上方法
直接taxbean.check_email(String yourmail)看返回值是false or true
function gfIsEmail(str) {
var email = str;
var reg = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(.[a-zA-Z0-9_-])+/;
flag = reg.test(email);
if(flag)
return true;
else
return false;
}
如果我想输出电子邮件错误的时候提示:您输出的是错误的,正确的时候提示:您输入的电子邮件是正确的,要怎么改?感谢中...
function emailCheck (emailStr) {
emailStr = emailStr.toLowerCase();
var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
var matchArray=emailStr.match(emailPat);
if (matchArray==null) {
alert("Email address seems incorrect (check @ and .'s)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];
for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
alert("Ths username contains invalid characters.");
return false;
}
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
alert("Ths domain name contains invalid characters.");
return false;
}
}
if (user.match(userPat)==null) {
alert("The username doesn't seem to be valid.");
return false;
}
var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {
for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
alert("Destination IP address is invalid!");
return false;
}
}
return true;
}
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
alert("The domain name does not seem to be valid.");
return false;
}
}
if (checkTLD && domArr[domArr.length-1].length!=2 &&
domArr[domArr.length-1].search(knownDomsPat)==-1) {
alert("The email address must end in a well-known domain or two letter " + "country.");
return false;
}
if (len<2) {
alert("This email address is missing a hostname!");
return false;
}
return true;
}使用: if (Form.email.value==''){
alert("Please enter valid email.");
Form.email.focus();
return false;
}
if (!emailCheck(Form.email.value)){
Form.email.focus();
return false;
}