下面是相应的代码实现: importjava.security.MessageDigest;importjava.security.NoSuchAlgorithmException;publicclassRandomCodeGenerator{publicstaticStringgenerateRandomCode(){StringrandomString=RandomStringGenerator.generateRandomString(16);try{MessageDigestmd=MessageDigest.getInstance("MD5");byte[]digest=md.digest(rando...
publicstaticString randomString(intstrLength) { Random rnd = ThreadLocalRandom.current(); StringBuilder ret =newStringBuilder(); for(inti =0; i < strLength; i++) { booleanisChar = (rnd.nextInt(2) %2==0);// 输出字母还是数字 if(isChar) {// 字符串 intchoice = rnd.nextInt(2) %2...
importorg.apache.commons.lang3.RandomStringUtils;publicclassRandomStringUtilsGenerator{publicstaticvoidmain(String[]args){intlength=10;// 生成的字符串长度Stringcharacters="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";// 字符集StringrandomString=RandomStringUtils.random(length,characters);System....
System.out.println("RandomStringUtils.random4-->"+ RandomStringUtils.random(6,0,chars.length,false,false, chars)); String str ="123abc"; System.out.println("RandomStringUtils.random5-->"+ RandomStringUtils.random(6, str)); System.out.println("RandomStringUtils.random6-->"+ RandomStringUtils....
使用Random类生成随机字符序列 import java.util.Random; public class RandomStringGenerator { private static final String CHARACTERS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; public static String generateRandomString(int length) { StringBuilder sb = new StringBuilder(); Random rando...
2. Generate Random Unbounded String With Plain Java Let’s start simple and generate a random String bounded to 7 characters: @Test public void givenUsingPlainJava_whenGeneratingRandomStringUnbounded_thenCorrect() { byte[] array = new byte[7]; // length is bounded by 7 new Random().nextByte...
import java.util.Random; public class RandomStringGenerator { public static void main(String[] args) { String randomString = generateRandomString(10); System.out.println("Random String: " + randomString); } public static String generateRandomString(int length) { // 定义允许的字符集 String cha...
虽然 ThreadLocalRandom 不支持手动设置随机种子的方法，但并不代表 ThreadLocalRandom 就是完美的，当我们查看 ThreadLocalRandom 初始化随机种子的方法 initialSeed() 源码时发现，默认情况下它的随机种子也是以当前时间有关，源码如下：privatestaticlonginitialSeed() {// 尝试获取 JVM 的启动参数 String sec = ...
* 1.生成的字符串每个位置都有可能是str中的一个字母或数字,需要导入的包是import java.util.Random; * @param length * @return */ public static String createRandomStr1(int length){ String str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; ...
String generatedString = random.ints(leftLimit, rightLimit +1) .limit(targetStringLength) .collect(StringBuilder::new, StringBuilder::appendCodePoint, StringBuilder::append) .toString(); System.out.println(generatedString); } 2. 使用 Java 8+ 版本创建随机字母数字 [0–9a-Z] 字符串,我们可以使用...