1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
package cn.wisenergy.common.utils;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;
/**
* Created by m1991 on 2021/2/26 11:10
*/
public class FileCreateNameUtils {
public static final String numberChar = "0123456789";
/***
* 文件名生成工具类
*/
public static String toCreateName() {
return getNowDatetoString() + generateNum(10);
}
/***
* 生成日期字符串 yyyyMMddHHmm
*
* @author MRC
* @date 2019年4月16日下午2:19:37
* @return
*/
public static String getNowDatetoString() {
Date currentTime = new Date();
SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMddHHmm");
String dateString = formatter.format(currentTime);
return dateString;
}
/***
* 生成随机数
* @author MRC
* @date 2019年4月16日下午2:21:06
* @param len
* @return
*/
public static String generateNum(int len) {
StringBuffer sb = new StringBuffer();
Random random = new Random();
for (int i = 0; i < len; i++) {
sb.append(numberChar.charAt(random.nextInt(numberChar.length())));
}
return sb.toString();
}
}