我是Java 8的新手,我无法解决如何将这些数据导入地图的问题 -
我正在从配置文件中读取数据 - 它看起来像这样(示例) -
SomeName = {
someAttribute = "attributeVal",
someImportantAttributeList = ("val1", "val2", "val3"),
...
}
SomeName2 = {
someAttribute ....
}
...
我正在尝试将数据收集到地图中,因此地图是一个Map,其中Key是SomeName,而Value是一个字符串集合(“someImportantAttributeList”。)
所有其他数据无关紧要。
现在我有这样的事情:
Map<String, Collection<String>> mapping = configReader.getConfig()
.entrySet()
.stream()
.filter(entry -> entry.getValue().containsKey("someImportantAttributeList")
. ????
我无法弄清楚如何正确地将其映射到String,Collection地图?
流本身似乎是条目,其值为Key = SomeName,value = String / Object类型的内部映射。 (所以在这种情况下,条目的键是SomeName,该值将是String key(someAttribute)和Object value(该属性的值)的另一个映射。
任何帮助将不胜感激!
答案 0 :(得分:1)
<?php
mysqli_connect("localhost", "root", "root") or die(mysqli_error());
mysqli_select_db("registrations") or die(mysqli_error());
if(isset($_POST['name']) && !empty($_POST['name']) AND isset($_POST['email']) && !empty($_POST['email'])){
$name = mysqli_escape_string($_POST['name']);
$email = mysqli_escape_string($_POST['email']);
}
if(!preg_match("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email)){
$msg = 'You have entered a invalid email.';
}else{
$msg = 'Your account has been made, please click the link in the email getting sent to you for verifying your account.';
$hash = md5( rand(0 , 1000) );
$password = rand(1000,5000);
}
mysqli_query("INSERT INTO users (username, password, email, hash) VALUES(
'". mysqli_escape_string($name) ."',
'". mysqli_escape_string(md5($password)) ."',
'". mysqli_escape_string($email) ."',
'". mysqli_escape_string($hash) ."') ") or die(mysqli_error());
?>