时间：2023-12-26
语法：Criteria.where("user_name").regex(Pattern.compile("^.*" + param+ ".*$", Pattern.CASE_INSENSITIVE)));
使用"^.*" + param+ ".*$" 来正则匹配，Pattern.CASE_INSENSITIVELE：大小写敏感
Query q= new Query();
q.addCriteria(Criteria.where("user_name").regex(Pattern.compile("^.*" + param + ".*$", Pattern.CASE_INSENSITIVE)));