public static void main(String[] args) { File file = new File("D:\file"); deleteFile(file); } publi ...

1.cmd进入mysql的bin目录下. 2.运行以下命令：mysqldump -h 127.0.0.1 -u root -p test > D:/test.sql -h 127.0.0.1 ...

Oracle中 COUNT(count(*))语法 是统计分组后的总数 oracle 例：select count(count(*)) from s_name group by type mysq ...

private static void ListSort(List list) { //用Collections这个工具类传list进来排序 Collections.sort(l ...

Several ports (8005, 8080, 8009) required by Tomcat v7.0 Server at localhost are already in use. The ...

/** * java 转换日期 lht */ public static Date addDate(Date date,long day) throws ParseException { Simpl ...

function check(e) { var re = /^\d+(?=.{0,1}\d+$|$)/ if (e.value != "") { if (!re.test(e.value)) { al ...

1.导入 Maven @RequestMapping(value = "importPsd") public String importPsd(MultipartFile file,Htt ...

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