在从前端获取手机号后,首先需要校验手机号是否有效 如下: 1 2 3 4 5 6 7 8 9 10 11 12 public static boolean isChinaMobile(String mobile) { if (mobile == null) return false; String PATTERN = "^((13[0-9])|(14[0,1,4-9])|(15[0-3,5-9])|(16[2,5,6,7])|(17[0-8])|(18[0-9])|(19[0-3,5-9]))\\\\d{8}$"; // Set the email pattern string Pattern p = Pattern.compile(PATTERN); // Match the given string with the pattern Matcher m = p.matcher(mobile); // check whether……
问题描述 最近搜索关键词,去除重复 解决方案 1 2 3 4 5 6 7 8 9 10 11 12 -- 使用rowid标识解决重复问题 DELETE FROM your_table WHERE rowid not in (SELECT MIN(rowid) FROM your_table GROUP BY column1, column2, column3); -- method1 DELETE from table_name where rowid not in (select min(rowid) FROM table_name group by column_name);……