生成随机字符串

摘要: 随机数

引用的jar

<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.6</version>
</dependency>

方法

String str=RandomStringUtils.random(10,false,true);

@param letters if {@code true}, generated string may include
* alphabetic characters
* @param numbers if {@code true}, generated string may include
* numeric characters
* @return the random string

lang包3.5里能正常引用，3.6里该方法已过时。
用如下方法代替。但没找到对应的类。。。。

RandomStringGenerator generator1 = new RandomStringGenerator.Builder()
.withinRange('a', 'z').build();