请参阅以下需要满足正则表达式的示例。
规则:4-12个字母数字字符或特殊字符(〜!@ $%& * _ +)至少一个字母,无空格
test ---------This is Valid
test@2 ---------This is Valid
test2 ---------This is Valid
2222 ---------This is NOT Valid
2222@ ---------This is NOT Valid
@2222 ---------This is NOT Valid
test user2 ---------This is NOT Valid
testUser ---------This is Valid
testUser@2 ---------This is Valid
testUser2 ---------This is Valid
testUser.2 ---------This is NOT Valid