使用 Java 生成“有意義的”用戶名（字母數字字符串）的最有效方法是什么？用戶名格式如下：LastSamurai33DarkLord96FallenAngelIceQueenLadyPhantom666DarkSun感謝您的時間。
4 回答
滄海一幻覺
TA貢獻1824條經驗 獲得超5個贊
您可以使用Java Faker生成各種隨機假數據。
這是一個例子
public static void main(String[] args) {
? ? ? ? Faker faker = new Faker();
? ? ? ? System.out.println(faker.superhero().prefix()+faker.name().firstName()+faker.address().buildingNumber());
? ? ? ? //MrSharon55747
? ? ? ? //IllustriousDock6698
? ? ? ? //CyborgDelilah207
? ? ? ? //GeneralAllison01931
? ? ? ? //RedWillard4366
? ? ? ? //TheJarvis71802
? ? }
Maven 依賴：
<dependency>
? ? <groupId>com.github.javafaker</groupId>
? ? <artifactId>javafaker</artifactId>
? ? <version>1.0.1</version>
</dependency>
揚帆大魚
TA貢獻1799條經驗 獲得超9個贊
加載單獨的形容詞和名詞數組。要生成 uid，請隨機選擇其中一個。大寫。決定是否要附加一個整數以及應該附加一個隨機數。連接并返回。
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.stream.Stream;
public class UserIdGenerator {
? final List<String> adjectives = new ArrayList();
? final List<String> nouns = new ArrayList();
? final int minInt;
? final int maxInt;
? final Random random;
? public UserIdGenerator(Path adjectivesPath, Path nounsPath, int minInt, int maxInt)
? ? ? throws IOException {
? ? this.minInt = minInt;
? ? this.maxInt = maxInt;
? ? try (Stream<String> lines = Files.lines(adjectivesPath)) {
? ? ? lines.forEach(line -> adjectives.add(capitalize(line)));
? ? }
? ? try (Stream<String> lines = Files.lines(nounsPath)) {
? ? ? lines.forEach(line -> nouns.add(capitalize(line)));
? ? }
? ? this.random = new Random();
? }
? private static String capitalize(String s) {
? ? return Character.toUpperCase(s.charAt(0)) + s.substring(1).toLowerCase();
? }
? public String generate() {
? ? StringBuilder sb = new StringBuilder()
? ? ? ? .append(adjectives.get(random.nextInt(adjectives.size())))
? ? ? ? .append(nouns.get(random.nextInt(nouns.size())));
? ? int i = random.nextInt(maxInt);
? ? if (i >= minInt) {
? ? ? sb.append(i - minInt);
? ? }
? ? return sb.toString();
? }
? public static void main(String [] args) throws IOException {
? ? UserIdGenerator userIdGenerator = new UserIdGenerator(
? ? ? ? Paths.get("28K adjectives.txt"),?
? ? ? ? Paths.get("91K nouns.txt"),?
? ? ? ? 20, 120);
? ? for (int i = 0; i < 100; ++i) {
? ? ? System.out.println(userIdGenerator.generate());
? ? }
? }
}
有點樂趣：
AncipitalBoxfuls67
PlanePerfectionists0
TrochaicSerins
UnroundedLightening29
ExpectingRemittors37
UnscorchedCrackbrains75
Conscience-strickenStiles0
MuddleheadedBaptistries7
GauntLoan11
IncompatibleImbalances33
StipitateGabbards62
AppreciatedAntihistamines41
PipyAquanauts83
BiosystematicMan-hours92
NursedCornhusker15
FlocculentCaskets
UnshoedZestfulness70
SulfuricVoyageur90
ParticipialCulpableness27
SunrayVidette43
UllagedKidney
KhedivalSuperaltars74
ArrayedConsorter77
MagnetizedWhooper86
TrimorphousDiscographers59
HolsteredBola89
AnagogicalLinacs19
UnhumbledFlush99
IrritableSuccourer
MultispiralMetallurgy2
SlitheringBelize8
BarkierStimy45
Bull-nosedGlossa45
UnbiasedProscriptions44
BilgierBlackburn7
ScarabaeoidIrreality98
SolidaryMeningiomas1
UnciformSwell5
WhateverTe-hees14
ConsummatedYou'll
BabblingVintners
ControlledTergiversations4
Rock-bottomConstructers77
UltraistLummoxes
ExpectableMicrohenry65
DecentralizedThriller51
SaccharicMisanthropes26
AnatropousMoldwarp20
VelvetyLowlander
MelanousHideaway
PromotiveDodecaphonism3
AdriaticRebutters
InboundEscallops7
RelishableSapotas74
UnjaundicedDichromat71
BloodshotAbuser63
VibrativeKeltic86
VeloceBugbear30
UnclassifiedSeine-maritime
MetonymicalVenturousness36
StemmedHurcheon6
RefreshingBaggages
ExpressibleOmens74
KookiestSegments33
AdmonishingNewsdealer
SchoolgirlishKeitloas45
DisgustfulStrangling9
NoduloseGarnishes
SeaworthyMurphy30
ProximoAcromion13
DisciplinalTransposition74
UnveiledDissolutions60
PrivilegedPorphyrin24
PetitCommonage79
UnrepugnantBwana33
StatelierSordidness
IsorhythmicTulipomania97
DeterministicAbstractness85
IntercrossedTestudos
WolfishOhms4
NimbleTelemeter61
PerthiticExpertises31
WorshipfulHumanness15
NiobeanDecumbency57
PtolemaicGodspeed
DiagonalMultistorey
BrawlingEglantines60
SynclasticWalnuts64
FibroticMordant28
FibrilloseGemels66
MitigativeDredger10
ConfigurationalOberland67
PrerogativeDoits96
BoswellianSandman39
CantharidalEpanodos23
GrippingOracle
Soft-coverDeveloping54
AdjuratorySilas31
MesozoicNorthman
WinterTraveling22
四季花海
TA貢獻1811條經驗 獲得超5個贊
組合以下解決方案來生成字母數字字符串，即使用 Java Faker 庫生成名稱，生成隨機整數（解決方案取決于您使用的 java 版本）并組合字符串來構建字母數字字符串。
繁花如伊
TA貢獻2012條經驗 獲得超12個贊
試試這個
public class UserNameGenerator {
public static void main(String[] args) {
for (int index = 0; index < 10; index++) {
System.out.println("Generate: "+ getUserText(null));
}
}
/**
* this generates a random username
* @param somePseudoName it shall be used in username if provided
* @return
*/
private static String getUserText(String somePseudoName) {
String[] nameArray = new String[]{"hello", "world", "someday", "mltr", "coldplay"};
String userName = "";
if (somePseudoName != null && somePseudoName.length() > 0) {
userName = somePseudoName;
} else {
userName = nameArray[new Random().nextInt(nameArray.length)];
}
return userName + getRandomNumber();
}
/**
* this shall create a random number
* @return a number text
*/
private static String getRandomNumber() {
StringBuilder numberText = new StringBuilder();
int[] numbersArray = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
int totalNumbers = new Random().nextInt(3);
for (int index = 0; index < totalNumbers; index++) {
numberText.append(numbersArray[new Random().nextInt(numbersArray.length)]);
}
return numberText.toString();
}
}
輸出
Generate: hello8
Generate: mltr
Generate: someday4
Generate: coldplay22
Generate: world
Generate: world
Generate: coldplay79
Generate: world
Generate: coldplay
Generate: coldplay15
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