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public static boolean validateEmail(String email){
//Pattern pattern = Pattern.compile("[0-9a-zA-Z]*.[0-9a-zA-Z]*@[a-zA-Z]*.[a-zA-Z]*", Pattern.LITERAL);
if(email == null){
return false;
}

//ÑéÖ¤¿ªÊ¼


//²»ÄÜÓÐÁ¬ÐøµÄ.
if(email.indexOf("..") != -1){
return false;
}

//±ØÐë´øÓÐ@
int atCharacter = email.indexOf("@");
if (atCharacter == -1) {
return false;
}

//×îºóÒ»¸ö.±ØÐëÔÚ@Ö®ºó,ÇÒ²»ÄÜÁ¬Ðø³öÏÖ
if(atCharacter > email.lastIndexOf('.') || atCharacter+1 == email.lastIndexOf('.')){
return false;
}

//²»ÄÜÒÔ.,@½áÊøºÍ¿ªÊ¼
if (email.endsWith(".") || email.endsWith("@") || email.startsWith(".") || email.startsWith("@")) {
return false;
}

return true;
}

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