1.导入huool工具的maven依赖

     <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.8.16</version>
        </dependency>

2.复制一下代码直接运行

import cn.hutool.core.lang.Validator;

public class Test {
    public static void main(String[] args) throws Exception {
        String str1 = "abc123";
        String str2 = "abc123你好";
        boolean a = Validator.hasChinese(str1);
        System.out.println(a?"包含汉字":"不包含汉字");
        boolean b = Validator.hasChinese(str2);
        System.out.println(b?"包含汉字":"不包含汉字");
    }

}