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生成16位id

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autumn.g@foxmail.com
2023-11-13 09:06:26 +08:00
parent be89f49d74
commit de57827206
2 changed files with 7 additions and 3 deletions
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8
jsowell-common/src/main/java/com/jsowell/common/util/id/IdUtils.java
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@@ -59,6 +59,10 @@ public class IdUtils {
// 2.中间四位整数，标识日期 // 2.中间四位整数，标识日期
SimpleDateFormat sdf = new SimpleDateFormat("MMdd"); SimpleDateFormat sdf = new SimpleDateFormat("MMdd");
String dayTime = sdf.format(new Date()); String dayTime = sdf.format(new Date());
// 2.生成四位随机整数
int valueOf = (int)((Math.random()*9+1)*1000);
// 3.生成uuid的hashCode值 // 3.生成uuid的hashCode值
int hashCode = UUID.randomUUID().toString().hashCode(); int hashCode = UUID.randomUUID().toString().hashCode();
// 4.可能为负数 // 4.可能为负数
@@ -66,8 +70,8 @@ public class IdUtils {
hashCode = -hashCode; hashCode = -hashCode;
} }
// 5.算法处理: 0-代表前面补充0; 10-代表长度为10; d-代表参数为正数型 // 5.算法处理: 0-代表前面补充0; 10-代表长度为10; d-代表参数为正数型
String value = machineId + dayTime + String.format("%010d", hashCode); String value = machineId + valueOf + String.format("%010d", hashCode);
System.out.println(value); // System.out.println(value);
return value; return value;
} }

2
jsowell-pile/src/main/java/com/jsowell/pile/service/impl/MemberBasicInfoServiceImpl.java
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@@ -279,7 +279,7 @@ public class MemberBasicInfoServiceImpl implements IMemberBasicInfoService {
public static void main(String[] args) { public static void main(String[] args) {
Set<String> set = Sets.newHashSet(); Set<String> set = Sets.newHashSet();
for (int i = 0; i < 1000000; i++) { for (int i = 0; i < 10000000; i++) {
String s = IdUtils.get16UUID(); String s = IdUtils.get16UUID();
System.out.println(s); System.out.println(s);
set.add(s); set.add(s);