StringUtil类生成随机id

import java.util.Random;

/**
 *  工具类
 * @author lvxk 2019-10-23
 */
public class StringUtil {


    private static final String ALL_CHAR = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

    /**
     * 生成随机id
     * @return
     */
    public static String getId(){
        StringBuffer sb = new StringBuffer();
        Random random = new Random();
        for (int i = 0; i < 32; i++) {
            sb.append(ALL_CHAR.charAt(random.nextInt(ALL_CHAR.length())));
        }
        return sb.toString();
    }
}