用户输入邮件地址，Email地址必须符合规范。编写一个邮件地址格式不符合规范的自定义异常继承自ApplicationException，如果邮件地址格式不符合规范，则抛出这个异常。-The user to enter e-mail address, Email address must meet the specifications. Write a mail address format does not meet the specifications defined exceptions i