lanyuanxiaoyao/spring-boot-service-template
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fix: 增加雪花ID生成的实现

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兰缘小妖
2025-08-14 16:39:59 +08:00
parent 33e11818c5
commit 222bb1e416
3 changed files with 115 additions and 33 deletions
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64
src/main/java/com/lanyuanxiaoyao/service/template/controller/Query.java
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@@ -59,131 +59,131 @@ public class Query {
private Map<String, Between> between; private Map<String, Between> between;
private Map<String, Between> notBetween; private Map<String, Between> notBetween;
public java.util.List<String> getNullEqual() { public List<String> getNullEqual() {
return nullEqual; return nullEqual;
} }
public void setNullEqual(java.util.List<String> nullEqual) { public void setNullEqual(List<String> nullEqual) {
this.nullEqual = nullEqual; this.nullEqual = nullEqual;
} }
public java.util.List<String> getNotNullEqual() { public List<String> getNotNullEqual() {
return notNullEqual; return notNullEqual;
} }
public void setNotNullEqual(java.util.List<String> notNullEqual) { public void setNotNullEqual(List<String> notNullEqual) {
this.notNullEqual = notNullEqual; this.notNullEqual = notNullEqual;
} }
public java.util.List<String> getEmpty() { public List<String> getEmpty() {
return empty; return empty;
} }
public void setEmpty(java.util.List<String> empty) { public void setEmpty(List<String> empty) {
this.empty = empty; this.empty = empty;
} }
public java.util.List<String> getNotEmpty() { public List<String> getNotEmpty() {
return notEmpty; return notEmpty;
} }
public void setNotEmpty(java.util.List<String> notEmpty) { public void setNotEmpty(List<String> notEmpty) {
this.notEmpty = notEmpty; this.notEmpty = notEmpty;
} }
public java.util.Map<String, Object> getEqual() { public Map<String, Object> getEqual() {
return equal; return equal;
} }
public void setEqual(java.util.Map<String, Object> equal) { public void setEqual(Map<String, Object> equal) {
this.equal = equal; this.equal = equal;
} }
public java.util.Map<String, Object> getNotEqual() { public Map<String, Object> getNotEqual() {
return notEqual; return notEqual;
} }
public void setNotEqual(java.util.Map<String, Object> notEqual) { public void setNotEqual(Map<String, Object> notEqual) {
this.notEqual = notEqual; this.notEqual = notEqual;
} }
public java.util.Map<String, String> getLike() { public Map<String, String> getLike() {
return like; return like;
} }
public void setLike(java.util.Map<String, String> like) { public void setLike(Map<String, String> like) {
this.like = like; this.like = like;
} }
public java.util.Map<String, String> getNotLike() { public Map<String, String> getNotLike() {
return notLike; return notLike;
} }
public void setNotLike(java.util.Map<String, String> notLike) { public void setNotLike(Map<String, String> notLike) {
this.notLike = notLike; this.notLike = notLike;
} }
public java.util.Map<String, Comparable<Object>> getGreat() { public Map<String, Comparable<Object>> getGreat() {
return great; return great;
} }
public void setGreat(java.util.Map<String, Comparable<Object>> great) { public void setGreat(Map<String, Comparable<Object>> great) {
this.great = great; this.great = great;
} }
public java.util.Map<String, Comparable<Object>> getLess() { public Map<String, Comparable<Object>> getLess() {
return less; return less;
} }
public void setLess(java.util.Map<String, Comparable<Object>> less) { public void setLess(Map<String, Comparable<Object>> less) {
this.less = less; this.less = less;
} }
public java.util.Map<String, Comparable<Object>> getGreatEqual() { public Map<String, Comparable<Object>> getGreatEqual() {
return greatEqual; return greatEqual;
} }
public void setGreatEqual(java.util.Map<String, Comparable<Object>> greatEqual) { public void setGreatEqual(Map<String, Comparable<Object>> greatEqual) {
this.greatEqual = greatEqual; this.greatEqual = greatEqual;
} }
public java.util.Map<String, Comparable<Object>> getLessEqual() { public Map<String, Comparable<Object>> getLessEqual() {
return lessEqual; return lessEqual;
} }
public void setLessEqual(java.util.Map<String, Comparable<Object>> lessEqual) { public void setLessEqual(Map<String, Comparable<Object>> lessEqual) {
this.lessEqual = lessEqual; this.lessEqual = lessEqual;
} }
public java.util.Map<String, java.util.List<Object>> getIn() { public Map<String, List<Object>> getIn() {
return in; return in;
} }
public void setIn(java.util.Map<String, java.util.List<Object>> in) { public void setIn(Map<String, List<Object>> in) {
this.in = in; this.in = in;
} }
public java.util.Map<String, java.util.List<Object>> getNotIn() { public Map<String, List<Object>> getNotIn() {
return notIn; return notIn;
} }
public void setNotIn(java.util.Map<String, java.util.List<Object>> notIn) { public void setNotIn(Map<String, List<Object>> notIn) {
this.notIn = notIn; this.notIn = notIn;
} }
public java.util.Map<String, com.lanyuanxiaoyao.service.template.controller.Query.Queryable.Between> getBetween() { public Map<String, Between> getBetween() {
return between; return between;
} }
public void setBetween(java.util.Map<String, com.lanyuanxiaoyao.service.template.controller.Query.Queryable.Between> between) { public void setBetween(Map<String, Between> between) {
this.between = between; this.between = between;
} }
public java.util.Map<String, com.lanyuanxiaoyao.service.template.controller.Query.Queryable.Between> getNotBetween() { public Map<String, Between> getNotBetween() {
return notBetween; return notBetween;
} }
public void setNotBetween(java.util.Map<String, com.lanyuanxiaoyao.service.template.controller.Query.Queryable.Between> notBetween) { public void setNotBetween(Map<String, Between> notBetween) {
this.notBetween = notBetween; this.notBetween = notBetween;
} }

2
src/main/java/com/lanyuanxiaoyao/service/template/entity/IdOnlyEntity.java
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@@ -14,7 +14,7 @@ public class IdOnlyEntity {
@Comment("记录唯一标记") @Comment("记录唯一标记")
@Id @Id
@GeneratedValue(generator = "snowflake") @GeneratedValue(generator = "snowflake")
@GenericGenerator(name = "snowflake", strategy = "com.lanyuanxiaoyao.service.ai.web.configuration.SnowflakeIdGenerator") @GenericGenerator(name = "snowflake", strategy = "com.lanyuanxiaoyao.service.template.helper.SnowflakeIdGenerator")
private Long id; private Long id;
public Long getId() { public Long getId() {

82
src/main/java/com/lanyuanxiaoyao/service/template/helper/SnowflakeIdGenerator.java Normal file
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@@ -0,0 +1,82 @@
package com.lanyuanxiaoyao.service.template.helper;
import java.io.Serializable;
import java.time.Instant;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.id.IdentifierGenerator;
public class SnowflakeIdGenerator implements IdentifierGenerator {
@Override
public Serializable generate(SharedSessionContractImplementor session, Object object) {
try {
return Snowflake.next();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public static class Snowflake {
/**
* 起始的时间戳
*/
private final static long START_TIMESTAMP = 1;
/**
* 序列号占用的位数
*/
private final static long SEQUENCE_BIT = 11;
/**
* 序列号最大值
*/
private final static long MAX_SEQUENCE_BIT = ~(-1 << SEQUENCE_BIT);
/**
* 时间戳值向左位移
*/
private final static long TIMESTAMP_OFFSET = SEQUENCE_BIT;
/**
* 序列号
*/
private static long sequence = 0;
/**
* 上一次时间戳
*/
private static long lastTimestamp = -1;
public static synchronized long next() {
long currentTimestamp = nowTimestamp();
if (currentTimestamp < lastTimestamp) {
throw new RuntimeException("Clock have moved backwards.");
}
if (currentTimestamp == lastTimestamp) {
// 相同毫秒内, 序列号自增
sequence = (sequence + 1) & MAX_SEQUENCE_BIT;
// 同一毫秒的序列数已经达到最大
if (sequence == 0) {
currentTimestamp = nextTimestamp();
}
} else {
// 不同毫秒内, 序列号置为0
sequence = 0;
}
lastTimestamp = currentTimestamp;
return (currentTimestamp - START_TIMESTAMP) << TIMESTAMP_OFFSET | sequence;
}
private static long nextTimestamp() {
long milli = nowTimestamp();
while (milli <= lastTimestamp) {
milli = nowTimestamp();
}
return milli;
}
private static long nowTimestamp() {
return Instant.now().toEpochMilli();
}
}
}