使用 Java 生成用户名（字母数字字符串）

Question

使用 Java 生成“有意义的”用户名（字母数字字符串）的最有效方法是什么？用户名格式如下：LastSamurai33DarkLord96FallenAngelIceQueenLadyPhantom666DarkSun感谢您的时间。

Answer 1

您可以使用Java Faker生成各种随机假数据。

这是一个例子

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 依赖：

<dependency>

    <groupId>com.github.javafaker</groupId>

    <artifactId>javafaker</artifactId>

    <version>1.0.1</version>

</dependency>

Answer 2

加载单独的形容词和名词数组。要生成 uid，请随机选择其中一个。大写。决定是否要附加一个整数以及应该附加一个随机数。连接并返回。

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());

    }

  }

}

有点乐趣：

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

Answer 3

组合以下解决方案来生成字母数字字符串，即使用 Java Faker 库生成名称，生成随机整数（解决方案取决于您使用的 java 版本）并组合字符串来构建字母数字字符串。

Answer 4

试试这个

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();

    }

}

输出

Generate: hello8

Generate: mltr

Generate: someday4

Generate: coldplay22

Generate: world

Generate: world

Generate: coldplay79

Generate: world

Generate: coldplay

Generate: coldplay15