我有一个用字符串掩盖信用卡号的功能:
public static String replaceCreditCardNumber(String text){
final String MASKCARD = "$1<MASKED>$2";
final Pattern PATTERNCARD =
Pattern.compile("([0-9]{4})[0-9]{0,9}([0-9]{4})");
Matcher matcher = PATTERNCARD.matcher(text);
if (matcher.find()) {
return matcher.replaceAll(MASKCARD);
}
return text;
}
此功能在以下情况下正常工作:
String text = "Aaaa bbbb aaa=1234567890123456 fdfdfd=aaa";
String expected = "Aaaa bbbb aaa=1234<MASKED>3456 fdfdfd=aaa";
assertEquals(expected,text);//OK
String text = "Aaaa bbbb aaa=\"1234567890123456\" fdfdfd=aaa";
String expected = "Aaaa bbbb aaa=\"1234<MASKED>3456\" fdfdfd=aaa";
assertEquals(expected,text);
但以下情况失败
String text = "Aaaa bbbb aaa=1gfg23fgfg4567890123456 fdfdfd=aaa";
String expected = "Aaaa bbbb aaa=1gfg23fgfg4567890123456 fdfdfd=aaa";
assertEquals(expected,text);
我正在
aaa=1gfg23fgfg4567[<MASKED>]3456
我的正则表达式中缺少什么?
答案 0 :(得分:3)
您应该使用字边界来确保避免匹配不需要的输入:
final Pattern PATTERNCARD =
Pattern.compile("\\b([0-9]{4})[0-9]{0,9}([0-9]{4})\\b");
答案 1 :(得分:1)
基于例子:
Pattern.compile("([0-9]{4})[0-9]{8}([0-9]{4})");
答案 2 :(得分:0)
我希望为您服务
我有以下课程:
$("section:nth-child(" + nthchild + ")").style.marginTop = "200px";
如果返回值为“”(空),则替换信用卡号的字符串:表示字符串符合正则表达式中的任何组。
$(function() {
$("#selectable").selectable();
});
$(function() {
$("#selectable").selectable({
selected: function(event, ui) {
var nthchild = ($(ui.selected).index() + 1);
console.log(nthchild);
}
});
});
$("section:nth-child(" + nthchild + ")").style.marginTop = "200px";