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  • commons-text 生成指定长度的随机字符串

    package com.skylink.junge.demo;
    
    import java.util.HashSet;
    import java.util.Set;
    
    import org.apache.commons.text.RandomStringGenerator;
    import org.apache.commons.text.StrTokenizer;
    
    public class StrTokenizerTest {
    
        public static void main(String[] args) {
            StrTokenizer strTokenizer = new StrTokenizer("a,b,c", ',');
            while (strTokenizer.hasNext()) {
                System.out.println(strTokenizer.next());
            }
            
            strTokenizer = new StrTokenizer("a
    b
    c");
            while (strTokenizer.hasNext()) {
                System.out.println(strTokenizer.next());
            }
            
            StrTokenizer tsvTokenizer = StrTokenizer.getCSVInstance(" a, b , c ");
            while (tsvTokenizer.hasNext()) {
                System.out.println(tsvTokenizer.next());
            }
            
            int count = 10000;
            Set<String> result = new HashSet<String>(count);
            RandomStringGenerator generator = new RandomStringGenerator.Builder().withinRange('0', '9').build();
            for (int i=0; i<count; i++) {
                result.add(generator.generate(20));
            }
            
            if (count != result.size()) {
                System.out.println("repeat str");
            }
            System.out.println(result.size());
        }
    
    }

    输出结果:

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  • 原文地址:https://www.cnblogs.com/junge8618/p/8445472.html
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